nih-gov/pubmed.ncbi.nlm.nih.gov/28520343/index.html

3552 lines
No EOL
126 KiB
HTML
Raw Permalink Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<!DOCTYPE html>
<html lang="en" >
<head itemscope itemtype="http://schema.org/WebPage" prefix="og: http://ogp.me/ns#" >
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<!-- Mobile properties -->
<meta name="HandheldFriendly" content="True">
<meta name="MobileOptimized" content="320">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="preconnect" href="https://cdn.ncbi.nlm.nih.gov">
<link rel="preconnect" href="https://www.ncbi.nlm.nih.gov">
<link rel="preconnect" href="https://www.google-analytics.com">
<link rel="stylesheet" href="https://cdn.ncbi.nlm.nih.gov/pubmed/277eb475-38df-4990-a0ee-0080b04e86fc/CACHE/css/output.ba8099dd2df4.css" type="text/css">
<link rel="stylesheet" href="https://cdn.ncbi.nlm.nih.gov/pubmed/277eb475-38df-4990-a0ee-0080b04e86fc/CACHE/css/output.452c70ce66f7.css" type="text/css">
<link rel="stylesheet" href="https://cdn.ncbi.nlm.nih.gov/pubmed/277eb475-38df-4990-a0ee-0080b04e86fc/CACHE/css/output.7bf600913d6e.css" type="text/css">
<link rel="stylesheet" href="https://cdn.ncbi.nlm.nih.gov/pubmed/277eb475-38df-4990-a0ee-0080b04e86fc/CACHE/css/output.0bfa59184c7a.css" type="text/css">
<title>Pitt-Hopkins Syndrome - PubMed</title>
<link rel="preload" as="font" href="https://cdn.ncbi.nlm.nih.gov/pubmed/277eb475-38df-4990-a0ee-0080b04e86fc/uswds/dist/fonts/merriweather-bold-webfont.woff2" type="font/woff2" crossorigin />
<!-- Favicons -->
<link rel="shortcut icon" type="image/ico" href="https://cdn.ncbi.nlm.nih.gov/coreutils/nwds/img/favicons/favicon.ico" />
<link rel="icon" type="image/png" href="https://cdn.ncbi.nlm.nih.gov/coreutils/nwds/img/favicons/favicon.png" />
<!-- 192x192, as recommended for Android
http://updates.html5rocks.com/2014/11/Support-for-theme-color-in-Chrome-39-for-Android
-->
<link rel="icon" type="image/png" sizes="192x192" href="https://cdn.ncbi.nlm.nih.gov/coreutils/nwds/img/favicons/favicon-192.png" />
<!-- 57x57 (precomposed) for iPhone 3GS, pre-2011 iPod Touch and older Android devices -->
<link rel="apple-touch-icon-precomposed" href="https://cdn.ncbi.nlm.nih.gov/coreutils/nwds/img/favicons/favicon-57.png">
<!-- 72x72 (precomposed) for 1st generation iPad, iPad 2 and iPad mini -->
<link rel="apple-touch-icon-precomposed" sizes="72x72" href="https://cdn.ncbi.nlm.nih.gov/coreutils/nwds/img/favicons/favicon-72.png">
<!-- 114x114 (precomposed) for iPhone 4, 4S, 5 and post-2011 iPod Touch -->
<link rel="apple-touch-icon-precomposed" sizes="114x114" href="https://cdn.ncbi.nlm.nih.gov/coreutils/nwds/img/favicons/favicon-114.png">
<!-- 144x144 (precomposed) for iPad 3rd and 4th generation -->
<link rel="apple-touch-icon-precomposed" sizes="144x144" href="https://cdn.ncbi.nlm.nih.gov/coreutils/nwds/img/favicons/favicon-144.png">
<!-- For Pinger + Google Optimize integration (NS-820) -->
<meta name="ncbi_sg_optimize_id" content="">
<!-- Mobile browser address bar color -->
<meta name="theme-color" content="#20558a">
<!-- Preserve the Referrer when going from HTTPS to HTTP -->
<meta name="referrer" content="origin-when-cross-origin">
<meta name="ncbi_pinger_gtm_track" content="true"/>
<!-- Logging params: Pinger defaults -->
<meta name="ncbi_app" content="pubmed" />
<meta name="ncbi_db" content="pubmed" />
<meta name="ncbi_phid" content="12D00001CB8B48B5000024124AEB569B.1.m_6" />
<meta name="ncbi_pinger_stat_url" content="https://www.ncbi.nlm.nih.gov/stat" />
<meta name="log_category" content="literature" />
<meta name="ncbi_cost_center" content="pubmed" />
<!-- Logging params: Pinger custom -->
<meta name="ncbi_pdid" content="abstract" />
<meta name="log_op" content="retrieve" />
<meta name="uid" content="28520343" />
<meta name="ncbi_uid" content="28520343" />
<meta name="log_displayeduids" content="28520343" />
<meta name="log_source_db" content="pubmed,bookshelf" />
<meta name="log_icons_present" content="true" />
<meta name="ncbi_search_id" content="sM4uFzLpwOd9nCAAwePwOg:920bc2676eb5719e4128c906dbfae1cc" />
<meta name="ncbi_adj_nav_search_id" content="WFj4VVf2iGHyI942ZEJcew:920bc2676eb5719e4128c906dbfae1cc" />
<!-- Social meta tags for unfurling urls -->
<meta name="description" content="Pitt-Hopkins syndrome is a rare neurodevelopmental disorder caused by loss of function of one allele of the &lt;i&gt;TCF4&lt;/i&gt; gene. Most cases result from a &lt;i&gt;de novo&lt;/i&gt; mutation that leads to a functional loss of one copy of the &lt;i&gt;TCF4&lt;/i&gt; gene. Other cases result from a deletion of the chromosome reg …"><meta name="keywords" content="pmid:28520343, NBK66129, Review, Laura Dean, PubMed Abstract, NIH, NLM, NCBI, National Institutes of Health, National Center for Biotechnology Information, National Library of Medicine, MEDLINE"><meta name="robots" content="index,nofollow,noarchive"><meta property="og:title" content="Pitt-Hopkins Syndrome - PubMed"><meta property="og:url" content="https://pubmed.ncbi.nlm.nih.gov/28520343/"><meta property="og:description" content="Pitt-Hopkins syndrome is a rare neurodevelopmental disorder caused by loss of function of one allele of the &lt;i&gt;TCF4&lt;/i&gt; gene. Most cases result from a &lt;i&gt;de novo&lt;/i&gt; mutation that leads to a functional loss of one copy of the &lt;i&gt;TCF4&lt;/i&gt; gene. Other cases result from a deletion of the chromosome reg …"><meta property="og:image" content="https://cdn.ncbi.nlm.nih.gov/pubmed/persistent/pubmed-meta-image-v2.jpg"><meta property="og:image:secure_url" content="https://cdn.ncbi.nlm.nih.gov/pubmed/persistent/pubmed-meta-image-v2.jpg"><meta property="og:type" content="website"><meta property="og:site_name" content="PubMed"><meta name="twitter:domain" content="pubmed.ncbi.nlm.nih.gov"><meta name="twitter:card" content="summary_large_image"><meta name="twitter:title" content="Pitt-Hopkins Syndrome - PubMed"><meta name="twitter:url" content="https://pubmed.ncbi.nlm.nih.gov/28520343/"><meta name="twitter:description" content="Pitt-Hopkins syndrome is a rare neurodevelopmental disorder caused by loss of function of one allele of the &lt;i&gt;TCF4&lt;/i&gt; gene. Most cases result from a &lt;i&gt;de novo&lt;/i&gt; mutation that leads to a functional loss of one copy of the &lt;i&gt;TCF4&lt;/i&gt; gene. Other cases result from a deletion of the chromosome reg …"><meta name="twitter:image" content="https://cdn.ncbi.nlm.nih.gov/pubmed/persistent/pubmed-meta-image-v2.jpg">
<!-- OpenSearch XML -->
<link rel="search" type="application/opensearchdescription+xml" href="https://cdn.ncbi.nlm.nih.gov/pubmed/persistent/opensearch.xml" title="PubMed search">
<!-- Disables severely broken elements when no JS -->
<noscript>
<link rel="stylesheet" type="text/css" href="https://cdn.ncbi.nlm.nih.gov/pubmed/277eb475-38df-4990-a0ee-0080b04e86fc/core/no-script.css">
</noscript>
<meta name="citation_title" content="Pitt-Hopkins Syndrome">
<meta name="citation_authors" content="Dean L;">
<meta name="citation_date" content="2012">
<meta name="citation_journal_title" content="">
<meta name="citation_pmid" content="28520343">
<meta name="citation_abstract_html_url" content="https://pubmed.ncbi.nlm.nih.gov/28520343/">
<meta name="citation_doi" content="">
<link rel="canonical" href="https://pubmed.ncbi.nlm.nih.gov/28520343/" />
</head>
<body >
<noscript>
<div class="no-script-banner" id="no-script-banner">
<div class="warning-message">
<div class="warning-message-text">
This site needs JavaScript to work properly. Please enable it to take advantage of the complete set of features!
</div>
</div>
</div>
</noscript>
<div class="no-session-banner" id="no-session-banner" hidden>
<div class="warning-message">
<div class="warning-message-text">
Clipboard, Search History, and several other advanced features are temporarily unavailable.
</div>
<button class="close-banner-button"
title="Close Clipboard and Search History not available warning banner"
ref="linksrc=close_no_session_banner"
aria-controls="no-session-banner"
aria-label="Close Clipboard and Search History not available warning banner"
aria-expanded="true">
</button>
</div>
</div>
<a class="usa-skipnav" href="#article-details">
Skip to main page content
</a>
<!-- ========== BEGIN HEADER ========== -->
<section class="usa-banner">
<div class="usa-accordion">
<header class="usa-banner-header">
<div class="usa-grid usa-banner-inner">
<img src="https://www.ncbi.nlm.nih.gov/coreutils/uswds/img/favicons/favicon-57.png" alt="U.S. flag" />
<p>An official website of the United States government</p>
<button
class="usa-accordion-button usa-banner-button"
aria-expanded="false"
aria-controls="gov-banner-top"
>
<span class="usa-banner-button-text">Here's how you know</span>
</button>
</div>
</header>
<div
class="usa-banner-content usa-grid usa-accordion-content"
id="gov-banner-top"
>
<div class="usa-banner-guidance-gov usa-width-one-half">
<img
class="usa-banner-icon usa-media_block-img"
src="https://www.ncbi.nlm.nih.gov/coreutils/uswds/img/icon-dot-gov.svg"
alt="Dot gov"
/>
<div class="usa-media_block-body">
<p>
<strong>The .gov means its official.</strong>
<br />
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure youre on a federal
government site.
</p>
</div>
</div>
<div class="usa-banner-guidance-ssl usa-width-one-half">
<img
class="usa-banner-icon usa-media_block-img"
src="https://www.ncbi.nlm.nih.gov/coreutils/uswds/img/icon-https.svg"
alt="Https"
/>
<div class="usa-media_block-body">
<p>
<strong>The site is secure.</strong>
<br />
The <strong>https://</strong> ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
</p>
</div>
</div>
</div>
</div>
</section>
<div class="usa-overlay"></div>
<header class="ncbi-header" role="banner" data-section="Header">
<div class="usa-grid">
<div class="usa-width-one-whole">
<div class="ncbi-header__logo">
<a href="https://www.ncbi.nlm.nih.gov/" class="logo" aria-label="NCBI Logo" data-ga-action="click_image" data-ga-label="NIH NLM Logo">
<img src="https://www.ncbi.nlm.nih.gov/coreutils/nwds/img/logos/AgencyLogo.svg" alt="NIH NLM Logo" />
</a>
</div>
<div class="ncbi-header__account">
<a id="account_login" href="https://account.ncbi.nlm.nih.gov" class="usa-button header-button" style="display:none" data-ga-action="open_menu" data-ga-label="account_menu">Log in</a>
<button id="account_info" class="header-button" style="display:none"
aria-controls="account_popup">
<span class="fa fa-user" aria-hidden="true"></span>
<span class="username desktop-only" aria-hidden="true" id="uname_short"></span>
<span class="sr-only">Show account info</span>
</button>
</div>
<div class="ncbi-popup-anchor">
<div class="ncbi-popup account-popup" id="account_popup" aria-hidden="true">
<div class="ncbi-popup-head">
<button class="ncbi-close-button" data-ga-action="close_menu" data-ga-label="account_menu"><span class="fa fa-times"></span><span class="usa-sr-only">Close</span></button>
<h4>Account</h4>
</div>
<div class="account-user-info">
Logged in as:<br/>
<b><span class="username" id="uname_long">username</span></b>
</div>
<div class="account-links">
<ul class="usa-unstyled-list">
<li><a id="account_myncbi" href="/myncbi/" class="set-base-url" data-ga-action="click_menu_item" data-ga-label="account_myncbi">Dashboard</a></li>
<li><a id="account_pubs" href="/myncbi/collections/bibliography/" class="set-base-url" data-ga-action="click_menu_item" data-ga-label="account_pubs">Publications</a></li>
<li><a id="account_settings" href="/account/settings/" class="set-base-url" data-ga-action="click_menu_item" data-ga-label="account_settings">Account settings</a></li>
<li><a id="account_logout" href="/account/signout/" class="set-base-url" data-ga-action="click_menu_item" data-ga-label="account_logout">Log out</a></li>
</ul>
</div>
</div>
</div>
</div>
</div>
</header>
<div role="navigation" aria-label="access keys">
<a id="nws_header_accesskey_0" href="https://www.ncbi.nlm.nih.gov/guide/browsers/#ncbi_accesskeys" class="usa-sr-only" accesskey="0" tabindex="-1">Access keys</a>
<a id="nws_header_accesskey_1" href="https://www.ncbi.nlm.nih.gov" class="usa-sr-only" accesskey="1" tabindex="-1">NCBI Homepage</a>
<a id="nws_header_accesskey_2" href="/myncbi/" class="set-base-url usa-sr-only" accesskey="2" tabindex="-1">MyNCBI Homepage</a>
<a id="nws_header_accesskey_3" href="#maincontent" class="usa-sr-only" accesskey="3" tabindex="-1">Main Content</a>
<a id="nws_header_accesskey_4" href="#" class="usa-sr-only" accesskey="4" tabindex="-1">Main Navigation</a>
</div>
<section data-section="Alerts">
<div class="ncbi-alerts-placeholder"></div>
</section>
<!-- ========== END HEADER ========== -->
<a id="maincontent" aria-label="Main page content below" role="navigation"></a>
<input type="hidden" name="csrfmiddlewaretoken" value="eTShjUKAsON7v0v96lf4Puv165747z3SvGCmWKdW2pABprBZJES6jC1FE9Pg0aBc">
<form action="/" method="get" autocomplete="off" class="usa-search usa-search-big search-form content-page-layout" id="search-form" role="search">
<div class="inner-wrap">
<a class="pubmed-logo"
aria-label="Pubmed Logo"
href="/"
data-ga-category="featured_link"
data-ga-action="pubmed_logo">
<img src="https://cdn.ncbi.nlm.nih.gov/pubmed/277eb475-38df-4990-a0ee-0080b04e86fc/core/images/pubmed-logo-blue.svg" alt="pubmed logo" />
</a>
<a href="#" class="search-input-trigger" data-alt-title="Hide search bar" title="Show search bar" aria-label="Show search bar">
</a>
<div role="search" class="search-input">
<div class="form-field ">
<label class="usa-sr-only" for="id_term">
Search:
</label>
<input
type="search"
name="term"
data-skip-ie-scroll-to-top=""
data-replace-term-with-exact=""
data-exact-query=""
placeholder=""
class="term-input"
required="required"
id="id_term"/><a href="#" class="clear-btn" aria-label="Clear search input" title="Clear search input" role="button" data-pinger-ignore></a><button type="submit" class="search-btn" aria-label="Search" disabled data-pinger-ignore><span class="usa-search-submit-text">Search</span></button>
</div>
</div>
<!-- Create alert and Create RSS are buttons that look like links -->
<!-- Better for them to look like buttons but no space -->
<div class="search-links-wrapper content-page-layout">
<div class="search-links">
<a href="/advanced/"
class="search-input-link adv-search-link"
data-ga-category="featured_link"
data-ga-action="adv_search">Advanced</a>
<a href="/clipboard/"
class="search-input-link clipboard-link hidden"
data-ga-category="featured_link"
data-ga-action="clipboard">
Clipboard <span class="amount-in-clipboard"></span>
</a>
</div>
<span class="search-input-link user-guide-link" role="navigation" aria-label="User guide">
<a href="/help/"
data-ga-category="featured_link"
data-ga-action="user_guide">
User Guide
</a>
</span>
</div>
</div>
</form>
<div id="article-page-header">
<div id="article-top-actions-bar" class="article-top-actions-bar">
<div class="inner-wrap">
<div class="actions-container">
<div class="return-to-search">
</div>
<div class="multiple-results-actions " role="region" aria-label="save, email, send to">
<button id="save-results-panel-trigger"
type="button"
class="save-results save-results-panel-trigger"
aria-expanded="false"
aria-controls="save-action-panel"
data-ga-category="save_share"
data-ga-action="save"
data-ga-label="open">
Save
</button><button id="email-results-panel-trigger"
type="button"
class="email-results email-results-panel-trigger"
aria-expanded="false"
aria-controls="email-action-panel"
data-ga-category="save_share"
data-ga-action="email"
data-ga-label="open">
Email
</button><div class="more-actions dropdown-block"><button id="more-actions-trigger"
type="button"
class="trigger more-actions-trigger"
ref="linksrc=show_moreactions_btn"
aria-label="Send to"
aria-controls="more-actions-dropdown">Send to</button><div id="more-actions-dropdown" class="dropdown dropdown-container" hidden><div class="content"><ul class="more-actions-links"><li><a class="clipboard-panel-trigger dropdown-block-link "
href="#"
role="button"
data-ga-category="save_share"
data-ga-action="clipboard"
data-ga-label="send">
Clipboard
</a></li><li><a role="button" class="dropdown-block-link bibliography-trigger-target" href="https://account.ncbi.nlm.nih.gov/?back_url=https%3A%2F%2Fpubmed.ncbi.nlm.nih.gov%2F28520343%2F%23open-bibliography-panel">My Bibliography</a></li><li><a role="button" class="dropdown-block-link collections-trigger-target" href="https://account.ncbi.nlm.nih.gov/?back_url=https%3A%2F%2Fpubmed.ncbi.nlm.nih.gov%2F28520343%2F%23open-collections-panel">Collections</a></li><li><a role="button" class="citation-manager-panel-trigger dropdown-block-link citation-manager-trigger-target" href="#">Citation manager</a></li></ul></div></div></div>
</div>
<div class="display-options" data-format-key="format"
data-default-format-value="abstract"
data-current-format-value="abstract" role="region">
<button
class="trigger usa-button"
title="Change format"
data-ga-category="display_options"
data-ga-action="display_options_dialog">
<span class="button-label">Display options</span>
</button>
<div class="dropdown" hidden>
<div class="title">
Display options
</div>
<div class="content">
<div class="format-container">
<span class="option-label">
Format
</span>
<select name="format" data-initial-value="abstract" aria-label="Display format" id="article-display-format">
<option value="abstract">Abstract</option>
<option value="pubmed">PubMed</option>
<option value="pmid">PMID</option>
</select>
</div>
</div>
</div>
</div>
<input type="hidden" name="csrfmiddlewaretoken" value="eTShjUKAsON7v0v96lf4Puv165747z3SvGCmWKdW2pABprBZJES6jC1FE9Pg0aBc">
</div>
</div>
</div>
<div id="article-panels-container" class="article-panels-container">
<div id="save-action-panel" class="save-action-panel action-panel" aria-hidden="true">
<div class="inner-wrap">
<h2 class="action-panel-heading">
Save citation to file
</h2>
<form id="save-action-panel-form"
class="action-panel-content action-form"
action="/results-export-ids/"
data-by-search-action="/results-export-search-data/"
data-by-ids-action="/results-export-ids/"
method="post"
data-by-search-method="post"
data-by-ids-method="post">
<input type="hidden" name="csrfmiddlewaretoken" value="eTShjUKAsON7v0v96lf4Puv165747z3SvGCmWKdW2pABprBZJES6jC1FE9Pg0aBc">
<div class="action-panel-control-wrap">
<label for="save-action-format" class="action-panel-label">
Format:
</label>
<select id="save-action-format" name="results-format" class="action-panel-selector">
<option value="summary-text">Summary (text)</option>
<option value="pubmed-text">PubMed</option>
<option value="pmid">PMID</option>
<option value="abstract">Abstract (text)</option>
<option value="csv">CSV</option>
</select>
</div>
<div class="action-panel-actions">
<button class="action-panel-submit"
type="submit"
data-loading-label="Saving..."
data-ga-category="save_share"
data-ga-action="save"
data-ga-label="save">
Create file
</button>
<button class="action-panel-cancel"
aria-label="Close 'Save citations to file' panel"
ref="linksrc=close_save_panel"
aria-controls="save-action-panel"
aria-expanded="false"
data-ga-category="save_share"
data-ga-action="save"
data-ga-label="cancel">
Cancel
</button>
</div>
</form>
</div>
</div>
<div id="email-action-panel"
class="email-action-panel action-panel"
aria-hidden="true"
data-recaptcha-script-url="https://www.recaptcha.net/recaptcha/enterprise.js?render=explicit&onload=onloadCaptchaCallback"
data-recaptcha-enabled="true">
<div class="inner-wrap">
<h2 class="action-panel-heading">
Email citation
</h2>
<form id="email-action-panel-form"
class="action-panel-content action-form"
action="/send-email/"
data-by-search-action="/results-export-email-by-search-data/"
data-by-ids-action="/send-email/"
data-by-search-method="post"
data-by-ids-method="post"
method="post"
>
<input type="hidden" name="csrfmiddlewaretoken" value="eTShjUKAsON7v0v96lf4Puv165747z3SvGCmWKdW2pABprBZJES6jC1FE9Pg0aBc">
<div class="action-panel-control-wrap">
<span class="action-panel-label">
Subject:
</span>
<span class="email-subject" id="email-subject" aria-label="Email subject">1 selected item: 28520343 - PubMed</span>
<input type="hidden" name="email-subject" value="1 selected item: 28520343"/>
<input type="hidden" name="email-subject-hash" value="e41407ea99994e09eba8f8b086e6ccf5ee63c495c035f04b97ce2a05346c7a6d"/>
</div>
<div class="action-panel-control-wrap">
<label for="email-to" class="action-panel-label required-field-asterisk">
To:
</label>
<input type="email" aria-label="Recipient Email Address" placeholder="email@example.com" id="email-to" class="email-to" pattern="^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$" maxlength="100" required>
</div>
<div class="action-panel-control-wrap">
<label for="email-from" class="action-panel-label">
From:
</label>
<input type="email" aria-label="Sender Email Address" placeholder="email@example.com" id="email-from" class="email-from" pattern="^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$" maxlength="256">
</div>
<div class="action-panel-control-wrap">
<label for="email-citation-format" class="action-panel-label">
Format:
</label>
<select id="email-citation-format" name="citation-format" class="action-panel-selector email-citation-format">
<option selected="selected" value="summary">Summary</option>
<option value="summary-text">Summary (text)</option>
<option value="abstract">Abstract</option>
<option value="abstract-text">Abstract (text)</option>
</select>
</div>
<div class="include-supplemental-container">
<input type="checkbox" aria-label="Include MeSH and other data" name="include-supplemental" id="email-include-supplemental" class="email-include-supplemental">
<label for="email-include-supplemental" class="email-include-supplemental-label">MeSH and other data</label>
</div>
<div class="form-field recaptcha ">
<div class="g-recaptcha" id="id-recaptcha" data-sitekey="6LfsWHMdAAAAAClKbtOpjQ2pMjgsGxvv7NdZW9uI"></div>
</div>
<div id="captcha-error-message" class="usa-input-error-message captcha-validation-message" role="alert"></div>
<div class="action-panel-actions">
<button class="action-panel-submit"
type="submit"
data-loading-label="Sending..."
data-ga-category="save_share"
data-ga-action="email"
data-ga-label="send">
Send email
</button>
<button class="action-panel-cancel"
aria-label="Close 'Email citations' panel"
ref="linksrc=close_email_panel"
aria-controls="email-action-panel"
aria-expanded="false"
data-ga-category="save_share"
data-ga-action="email"
data-ga-label="cancel">
Cancel
</button>
</div>
<input type="hidden" name="email-search-details" value="" />
<input type="hidden" name="email-search-details-hash" value="0e42663a6c3bd85498fcb88798998fed7bfdc45d457db35281e41afe13cc0524" />
</form>
</div>
</div>
<div id="collections-action-panel"
class="collections-action-panel action-panel in-progress-dots-panel"
aria-hidden="true"
data-collections-open-panel-enabled="false"
data-collections-open-panel-url-hash="#open-collections-panel">
<div class="inner-wrap">
<h3 class="action-panel-heading">
Add to Collections
</h3>
<form id="collections-action-panel-form"
class="collections-action-panel-form action-panel-content action-form action-panel-smaller-selectors"
data-existing-collections-url="/list-existing-collections/"
data-add-to-existing-collection-url="/add-to-existing-collection/"
data-create-and-add-to-new-collection-url="/create-and-add-to-new-collection/"
data-get-article-ids-by-search-url="/get-article-ids-by-search/"
data-myncbi-max-collection-name-length="100"
data-add-to-collection-max-amount="1000"
data-collections-root-url="https://www.ncbi.nlm.nih.gov/myncbi/collections/">
<input type="hidden" name="csrfmiddlewaretoken" value="eTShjUKAsON7v0v96lf4Puv165747z3SvGCmWKdW2pABprBZJES6jC1FE9Pg0aBc">
<div class="choice-group" role="radiogroup">
<ul class="radio-group-items">
<li>
<input type="radio"
id="collections-action-panel-new"
class="collections-new"
name="collections"
value="new"
data-ga-category="save_share"
data-ga-action="collections"
data-ga-label="collections_radio_new">
<label for="collections-action-panel-new">Create a new collection</label>
</li>
<li>
<input type="radio"
id="collections-action-panel-existing"
class="collections-existing"
name="collections"
value="existing"
checked="true"
data-ga-category="save_share"
data-ga-action="collections"
data-ga-label="collections_radio_existing">
<label for="collections-action-panel-existing">Add to an existing collection</label>
</li>
</ul>
</div>
<div class="controls-wrapper">
<div class="action-panel-control-wrap new-collections-controls">
<label for="collections-action-panel-add-to-new" class="action-panel-label required-field-asterisk">
Name your collection:
</label>
<input
type="text"
name="add-to-new-collection"
id="collections-action-panel-add-to-new"
class="collections-action-add-to-new"
pattern="[^&quot;&amp;=&lt;&gt;\/]*" title="The following characters are not allowed in the Name field: &quot;&amp;=&lt;&gt;/"
maxlength="100"
data-ga-category="save_share"
data-ga-action="create_collection"
data-ga-label="non_favorties_collection">
<div class="collections-new-name-too-long usa-input-error-message selection-validation-message">
Name must be less than 100 characters
</div>
</div>
<div class="action-panel-control-wrap existing-collections-controls">
<label for="collections-action-panel-add-to-existing" class="action-panel-label">
Choose a collection:
</label>
<select id="collections-action-panel-add-to-existing"
class="action-panel-selector collections-action-add-to-existing"
data-ga-category="save_share"
data-ga-action="select_collection"
data-ga-label="($('#collections-action-add-to-existing').val() === 'Favorites') ? 'Favorites' : 'non_favorites_collection'">
</select>
<div class="collections-retry-load-on-error usa-input-error-message selection-validation-message">
Unable to load your collection due to an error<br>
<a href="#">Please try again</a>
</div>
</div>
</div>
<div class="action-panel-actions">
<button class="action-panel-submit"
type="submit"
data-loading-label="Adding..."
data-pinger-ignore
data-ga-category="save_share"
data-ga-action="collections"
data-ga-label="add">
Add
</button>
<button class="action-panel-cancel"
aria-label="Close 'Add to Collections' panel"
ref="linksrc=close_collections_panel"
aria-controls="collections-action-panel"
aria-expanded="false"
data-ga-category="save_share"
data-ga-action="collections"
data-ga-label="cancel">
Cancel
</button>
</div>
</form>
</div>
</div>
<div id="bibliography-action-panel"
class="bibliography-action-panel action-panel in-progress-dots-panel"
aria-hidden="true"
data-bibliography-open-panel-enabled="false"
data-bibliography-open-panel-url-hash="#open-bibliography-panel">
<div class="inner-wrap">
<h3 class="action-panel-heading">
Add to My Bibliography
</h3>
<form id="bibliography-action-panel-form"
class="bibliography-action-panel-form action-panel-content action-form action-panel-smaller-selectors"
data-add-to-bibliography-max-amount="100"
data-add-to-bibliography-batch-size="10"
data-bibliography-delegates-url="/list-bibliography-delegates/"
data-add-to-bibliography-url="/add-to-bibliography/"
data-get-article-ids-by-search-url="/get-article-ids-by-search/"
data-mybib-root-url="https://www.ncbi.nlm.nih.gov/myncbi/collections/mybibliography/">
<input type="hidden" name="csrfmiddlewaretoken" value="eTShjUKAsON7v0v96lf4Puv165747z3SvGCmWKdW2pABprBZJES6jC1FE9Pg0aBc">
<div class="action-panel-control-wrap bibliographies-controls">
<div class="choice-group">
<ul class="bibliographies-action-add radio-group-items">
<li>
<input name="bibliography" id="my-bibliography" class="my-bibliography" type="radio" checked/>
<label for="my-bibliography">My Bibliography</label>
</li>
</ul>
</div>
</div>
<div class="bibliographies-retry-load-on-error usa-input-error-message selection-validation-message">
Unable to load your delegates due to an error<br>
<a href="#">Please try again</a>
</div>
<div class="action-panel-actions">
<button class="action-panel-submit"
type="submit"
data-loading-label="Adding..."
data-pinger-ignore>
Add
</button>
<button class="action-panel-cancel"
aria-label="Close 'Add to bibliography' panel"
ref="linksrc=close_bibliography_panel"
aria-controls="bibliography-action-panel"
aria-expanded="false"
data-ga-category="save_share"
data-ga-action="mybib"
data-ga-label="cancel">
Cancel
</button>
</div>
</form>
</div>
</div>
<div id="saved-search-action-panel" class="saved-search-action-panel action-panel " aria-hidden="true"
data-saved-search-open-panel-enabled="false"
data-saved-search-open-panel-url-hash="#open-saved-search-panel">
<div class="inner-wrap">
<h2 class="action-panel-heading">
Your saved search
</h2>
<form id="saved-search-action-panel-form"
class="saved-search-action-panel-form action-panel-content action-form"
data-create-saved-search-url="/create-saved-search/"
data-try-search-terms-url="/try-search-term/"
data-saved-search-root-url="https://www.ncbi.nlm.nih.gov/myncbi/searches/">
<input type="hidden" name="csrfmiddlewaretoken" value="eTShjUKAsON7v0v96lf4Puv165747z3SvGCmWKdW2pABprBZJES6jC1FE9Pg0aBc">
<div class="action-panel-control-wrap">
<label for="saved-search-name" class="action-panel-label saved-search-name-label required-field-asterisk">
Name of saved search:
</label>
<input maxlength="200"
type="text"
name="saved-search-name"
id="saved-search-name"
class="saved-search-name"
value=""
required
pattern="[^&quot;&amp;=&lt;&gt;\/]*" title="The following characters are not allowed in the Name field: &quot;&amp;=&lt;&gt;/">
</div>
<div class="action-panel-control-wrap">
<label for="saved-search-term" class="action-panel-label required-field-asterisk">
Search terms:
</label>
<textarea name="saved-search-term" id="saved-search-term" class="saved-search-term" required></textarea>
</div>
<div class="test-search-term-wrap">
<a href="#" class="try-search-term">Test search terms</a>
</div>
<div class="choice-group action-panel-extra-margin-top">
<span class="action-panel-label" id="fieldset-label">
Would you like email updates of new search results?
</span>
<fieldset id="saved-search-alert" aria-describedby="fieldset-label">
<legend class="usa-sr-only">Saved Search Alert Radio Buttons</legend>
<ul class="radio-group-items">
<li>
<input type="radio" id="saved-search-alert-yes" class="saved-search-alert-yes" name="saved-search-alert" value="yes" checked>
<label for="saved-search-alert-yes" class="action-panel-label">Yes</label>
</li>
<li>
<input aria-label="No radio input" type="radio" id="saved-search-alert-no" class="saved-search-alert-no" name="saved-search-alert" value="no">
<label for="saved-search-alert-no" class="action-panel-label">No</label>
</li>
</ul>
</fieldset>
</div>
<div class="alert-schedule-wrap">
<div class="action-panel-control-wrap">
<label class="action-panel-label">
Email:
</label>
<span aria-label="Email address" id="saved-search-email" class="action-panel-label"><span class="action-panel-label-bold"></span> (<a class="myncbi-account-settings" href="https://www.ncbi.nlm.nih.gov/account/settings/">change</a>)</span>
</div>
<div class="action-panel-control-wrap action-panel-extra-margin-top">
<label for="saved-search-frequency" class="action-panel-label">
Frequency:
</label>
<select id="saved-search-frequency" class="no-border-panel-selector saved-search-frequency">
<option value="monthly">Monthly</option>
<option value="weekly">Weekly</option>
<option value="daily">Daily</option>
</select>
</div>
<div class="action-panel-control-wrap saved-search-monthly-additional">
<label for="saved-search-monthly-on-day" class="action-panel-label">
Which day?
</label>
<select id="saved-search-monthly-on-day" class="no-border-panel-selector">
<option value="Sunday">The first Sunday</option>
<option value="Monday">The first Monday</option>
<option value="Tuesday">The first Tuesday</option>
<option value="Wednesday">The first Wednesday</option>
<option value="Thursday">The first Thursday</option>
<option value="Friday">The first Friday</option>
<option value="Saturday">The first Saturday</option>
<option value="day">The first day</option>
<option value="weekday">The first weekday</option>
</select>
</div>
<div class="action-panel-control-wrap saved-search-weekly-additional">
<label for="saved-search-weekly-on-day" class="action-panel-label">
Which day?
</label>
<select id="saved-search-weekly-on-day" class="no-border-panel-selector saved-search-weekly-on-day">
<option value="Sunday">Sunday</option>
<option value="Monday">Monday</option>
<option value="Tuesday">Tuesday</option>
<option value="Wednesday">Wednesday</option>
<option value="Thursday">Thursday</option>
<option value="Friday">Friday</option>
<option value="Saturday">Saturday</option>
</select>
</div>
<div class="action-panel-control-wrap">
<label for="saved-search-report" class="action-panel-label">
Report format:
</label>
<select id="saved-search-report" class="no-border-panel-selector saved-search-report">
<option value="DocSum">Summary</option>
<option value="DocSumText">Summary (text)</option>
<option value="Abstract">Abstract</option>
<option value="AbstractText">Abstract (text)</option>
<option value="MEDLINE">PubMed</option>
</select>
</div>
<div class="action-panel-control-wrap">
<label for="saved-search-amount" class="action-panel-label">
Send at most:
</label>
<select id="saved-search-amount" class="no-border-panel-selector saved-search-amount">
<option value="1">1 item</option>
<option value="5" selected>5 items</option>
<option value="10">10 items</option>
<option value="20">20 items</option>
<option value="50">50 items</option>
<option value="100">100 items</option>
<option value="200">200 items</option>
</select>
</div>
<div>
<input type="checkbox" id="saved-search-send-if-no-result" class="saved-search-send-if-no-result" name="saved-search-send-if-no-result">
<label for="saved-search-send-if-no-result" class="action-panel-label smaller-checkbox">
Send even when there aren't any new results
</label>
</div>
<div class="action-panel-control-wrap option-text-in-email-wrap">
<label for="saved-search-email-text" class="action-panel-label">
Optional text in email:
</label>
<textarea name="saved-search-email-text"
id="saved-search-email-text"
class="saved-search-email-text"></textarea>
</div>
</div>
<div class="action-panel-actions">
<button class="action-panel-submit"
type="submit"
data-loading-label="Saving..."
data-ga-category="save_share"
data-ga-action="alert"
data-ga-label="save">
Save
</button>
<button class="action-panel-cancel"
aria-label="Close 'Your saved search' panel"
ref="linksrc=close_saved_search_panel"
aria-controls="saved-search-action-panel"
aria-expanded="false"
data-ga-category="save_share"
data-ga-action="alert"
data-ga-label="cancel">
Cancel
</button>
</div>
</form>
</div>
</div>
<div id="citation-manager-action-panel" class="citation-manager-action-panel action-panel" aria-hidden="true">
<div class="inner-wrap">
<h2 class="action-panel-heading">
Create a file for external citation management software
</h2>
<form id="citation-manager-action-panel-form"
class="action-panel-content action-form"
action="/results-export-ids/"
data-by-search-action="/results-export-search-data/"
data-by-ids-action="/results-export-ids/"
method="post"
data-by-search-method="post"
data-by-ids-method="post">
<input type="hidden" name="csrfmiddlewaretoken" value="eTShjUKAsON7v0v96lf4Puv165747z3SvGCmWKdW2pABprBZJES6jC1FE9Pg0aBc">
<input name="results-format" type="hidden" value="pubmed"/>
<div class="action-panel-actions">
<button class="action-panel-submit"
type="submit"
data-loading-label="Sending..."
data-ga-category="save_share"
data-ga-action="citation_manager"
data-ga-label="save">
Create file
</button>
<button class="action-panel-cancel"
aria-label="Close 'Send citations to citation manager' panel"
ref="linksrc=close_citation_manager_panel"
aria-controls="citation-manager-action-panel"
aria-expanded="false"
data-ga-category="save_share"
data-ga-action="citation_manager"
data-ga-label="cancel">
Cancel
</button>
</div>
</form>
</div>
</div>
<div id="rss-action-panel" class="rss-action-panel action-panel " aria-hidden="true">
<div class="inner-wrap">
<h2 class="action-panel-heading">
Your RSS Feed
</h2>
<form id="rss-action-panel-form"
class="rss-action-panel-form action-panel-content action-form"
data-create-rss-feed-url="/create-rss-feed-url/"
data-search-form-term-value="">
<input type="hidden" name="csrfmiddlewaretoken" value="eTShjUKAsON7v0v96lf4Puv165747z3SvGCmWKdW2pABprBZJES6jC1FE9Pg0aBc">
<div class="action-panel-control-wrap">
<label for="rss-name" class="action-panel-label required-field-asterisk">
Name of RSS Feed:
</label>
<input maxlength="200"
placeholder="Name"
type="text"
name="rss-name"
id="rss-name"
class="rss-name"
value=''
required
pattern="[^&quot;&amp;=&lt;&gt;\/]*" title="The following characters are not allowed in the Name field: &quot;&amp;=&lt;&gt;/">
</div>
<div class="rss-limit-wrap">
<div class="action-panel-control-wrap action-panel-extra-margin-top">
<label for="rss-limit" class="action-panel-label">
Number of items displayed:
</label>
<select id="rss-limit" class="no-border-panel-selector rss-limit">
<option value="5">5</option>
<option value="10">10</option>
<option value="15" selected="selected">15</option>
<option value="20">20</option>
<option value="50">50</option>
<option value="100">100</option>
</select>
</div>
</div>
<div class="action-panel-actions">
<button class="action-panel-submit"
type="submit"
data-loading-label="Creating..."
data-ga-category="save_share"
data-ga-action="alert"
data-ga-label="save">
Create RSS
</button>
<button class="action-panel-cancel"
aria-label="Close 'Your RSS' panel"
ref="linksrc=close_rss_panel"
aria-controls="rss-action-panel"
aria-expanded="false"
data-ga-category="save_share"
data-ga-action="alert"
data-ga-label="cancel">
Cancel
</button>
</div>
<div class="action-panel-control-wrap rss-link-copy-wrap">
<label for="rss-link" class="usa-sr-only">RSS Link</label>
<input placeholder="Your RSS Feed Link" type="text" name="rss-link" id="rss-link" class="rss-link" title="RSS Link">
<button
type="button"
disabled
class="rss-link-copy-button disabled"
data-ga-category="save_share"
data-ga-action="rss"
data-ga-label="copy">
Copy
</button>
</div>
</form>
</div>
</div>
</div>
</div>
<div class="article-page" id="article-page" data-article-pmid="28520343">
<aside class="page-sidebar">
<div class="inner-wrap">
<div class="full-text-links">
<div class="full-view">
<h3 class="title">
Full text links
</h3>
<div class="full-text-links-list">
<a class="link-item
book
dialog-focus"
href="https://www.ncbi.nlm.nih.gov/books/NBK66129"
target="_blank"
rel="noopener"
ref="linksrc=fulltextorjournal_fulltext&amp;is_pmc=False&amp;PrId=3057&amp;itool=Abstract-def&amp;log$=linkouticon&amp;uid=28520343&amp;db=pubmed"
title="See full text options at NCBI Bookshelf"
data-ga-category="full_text"
data-ga-action="NCBI Bookshelf"
data-ga-label="28520343"
><img class="book-icon" src="https://cdn.ncbi.nlm.nih.gov/corehtml/pmc/pmcgifs/bookshelf/thumbs/th-gtrbook.png" alt="book cover photo"><div class="book-icon-label"><div class="book-icon-label-title">Medical Genetics Summaries [Internet]</div></div><span class="text">
NCBI Bookshelf
</span></a>
</div>
</div>
<div class="short-view">
<a href="#" class="full-text-links-button full-text-links-dialog-trigger">
Full text links
</a>
</div>
</div>
<div class="actions-buttons sidebar"><h3 class="title">Actions</h3><div class="inner-wrap"><button class="citation-button citation-dialog-trigger"
aria-label="Open dialog with citation text in different styles"
data-ga-category="save_share"
data-ga-action="cite"
data-ga-label="open"
data-all-citations-url="/28520343/citations/"
data-citation-style="nlm"
data-pubmed-format-link="/28520343/export/"><span class="button-label">Cite</span></button><link type="text/css" href="ncbi-overlay-block/src/overlay-block.css"><div class="collections-button-container" data-article-id="28520343" data-article-db="pubmed"><button class="collections-button collections-dialog-trigger"
aria-label="Save article in MyNCBI collections."
data-ga-category="collections_button"
data-ga-action="click"
data-ga-label="collections_button"
data-collections-open-dialog-enabled="false"
data-collections-open-dialog-url="https://account.ncbi.nlm.nih.gov/?back_url=https%3A%2F%2Fpubmed.ncbi.nlm.nih.gov%2F28520343%2F%23open-collections-dialog"
data-in-collections="false"><span class="button-label">Collections</span></button><div class="overlay" role="dialog"><div id="collections-action-dialog"
class="dialog collections-dialog"
aria-hidden="true"><div class="title">Add to Collections</div><div class="collections-action-panel action-panel"><form id="collections-action-dialog-form"
class="collections-action-panel-form action-panel-content action-form action-panel-smaller-selectors"
data-existing-collections-url="/list-existing-collections/"
data-add-to-existing-collection-url="/add-to-existing-collection/"
data-create-and-add-to-new-collection-url="/create-and-add-to-new-collection/"
data-myncbi-max-collection-name-length="100"
data-collections-root-url="https://www.ncbi.nlm.nih.gov/myncbi/collections/"><input type="hidden" name="csrfmiddlewaretoken" value="eTShjUKAsON7v0v96lf4Puv165747z3SvGCmWKdW2pABprBZJES6jC1FE9Pg0aBc"><div class="choice-group" role="radiogroup"><ul class="radio-group-items"><li><input type="radio"
id="collections-action-dialog-new"
class="collections-new"
name="collections"
value="new"
data-ga-category="collections_button"
data-ga-action="click"
data-ga-label="collections_radio_new"><label for="collections-action-dialog-new">Create a new collection</label></li><li><input type="radio"
id="collections-action-dialog-existing"
class="collections-existing"
name="collections"
value="existing"
checked="true"
data-ga-category="collections_button"
data-ga-action="click"
data-ga-label="collections_radio_existing"><label for="collections-action-dialog-existing">Add to an existing collection</label></li></ul></div><div class="controls-wrapper"><div class="action-panel-control-wrap new-collections-controls"><label for="collections-action-dialog-add-to-new" class="action-panel-label required-field-asterisk">
Name your collection:
</label><input
type="text"
name="add-to-new-collection"
id="collections-action-dialog-add-to-new"
class="collections-action-add-to-new"
pattern="[^&quot;&amp;=&lt;&gt;\/]*" title="The following characters are not allowed in the Name field: &quot;&amp;=&lt;&gt;/"
maxlength="100"
data-ga-category="collections_button"
data-ga-action="create_collection"
data-ga-label="non_favorties_collection"><div class="collections-new-name-too-long usa-input-error-message selection-validation-message">
Name must be less than 100 characters
</div></div><div class="action-panel-control-wrap existing-collections-controls"><label for="collections-action-dialog-add-to-existing" class="action-panel-label">
Choose a collection:
</label><select id="collections-action-dialog-add-to-existing"
class="action-panel-selector collections-action-add-to-existing"
data-ga-category="collections_button"
data-ga-action="select_collection"
data-ga-label="($('.collections-action-add-to-existing').val() === 'Favorites') ? 'Favorites' : 'non_favorites_collection'"></select><div class="collections-retry-load-on-error usa-input-error-message selection-validation-message">
Unable to load your collection due to an error<br><a href="#">Please try again</a></div></div></div><div class="action-panel-actions"><button class="action-panel-submit"
type="submit"
data-loading-label="Adding..."
data-pinger-ignore
data-ga-category="collections_button"
data-ga-action="click"
data-ga-label="add">
Add
</button><button class="action-panel-cancel"
aria-label="Close 'Add to Collections' panel"
ref="linksrc=close_collections_panel"
aria-controls="collections-action-panel"
aria-expanded="false"
data-ga-category="collections_button"
data-ga-action="click"
data-ga-label="cancel">
Cancel
</button></div></form></div></div></div></div><button class="more-actions-button more-actions-dialog-trigger"
title="Open dialog with more actions to take"
ref="linksrc=more_actions_btn"></button><div class="display-options" data-format-key="format"
data-default-format-value="abstract"
data-current-format-value="abstract" role="region"><button
class="trigger usa-button"
title="Change format"
data-ga-category="display_options"
data-ga-action="display_options_dialog"><span class="button-label">Display options</span></button><div class="dropdown" hidden><div class="title">
Display options
</div><div class="content"><div class="format-container"><span class="option-label">
Format
</span><select name="format" data-initial-value="abstract" aria-label="Display format" id="sidebar-actions-display-format"><option value="abstract">Abstract</option><option value="pubmed">PubMed</option><option value="pmid">PMID</option></select></div></div></div></div></div></div>
<div class="social-sharing">
<h3 class="title">
Share
</h3>
<ul class="social-sharing-links usa-unstyled-list">
<li>
<a href="http://twitter.com/intent/tweet?text=Pitt-Hopkins%20Syndrome%20https%3A//pubmed.ncbi.nlm.nih.gov/28520343/"
class="share-link share-link-twitter"
rel="noreferrer noopener"
target="Pubmed-Social-Media-Share-Popup"
title="Share article on Twitter"
data-ga-category="save_share"
data-ga-action="social"
data-ga-label="twitter"></a>
</li>
<li>
<a href="http://www.facebook.com/sharer/sharer.php?u=https%3A//pubmed.ncbi.nlm.nih.gov/28520343/"
class="share-link share-link-facebook"
rel="noreferrer noopener"
target="Pubmed-Social-Media-Share-Popup"
title="Share article on Facebook"
data-ga-category="save_share"
data-ga-action="social"
data-ga-label="fb"></a>
</li>
<li>
<div class="share-permalink">
<button class="trigger"
title="Show article permalink"
ref="linksrc=show_permalink_btn">
</button>
<div class="dropdown" hidden>
<div class="title">
Permalink
</div>
<div class="content">
<input type="text"
class="permalink-text"
value="https://pubmed.ncbi.nlm.nih.gov/28520343/"
aria-label="Article permalink"/><button class="permalink-copy-button usa-button-primary"
title="Copy article permalink"
data-ga-category="save_share"
data-ga-action="link"
data-ga-label="copy_link"><span class="button-title">Copy</span></button>
</div>
</div>
</div>
</li>
</ul>
</div>
<nav class="page-navigator" role="navigation" aria-label="Page navigation">
<div class="full-view">
<h3 class="title">
Page navigation
</h3>
<ul class="items-list">
<li class="heading ">
<a href="#heading"
aria-label="navigate to Title &amp; authors section"
data-ga-category="page_nav"
data-ga-action="heading">
Title &amp; authors
</a>
</li>
<li class="abstract ">
<a href="#abstract"
aria-label="navigate to Excerpt section"
data-ga-category="page_nav"
data-ga-action="abstract">
Excerpt
</a>
</li>
<li class="book-sections ">
<a href="#book-sections"
aria-label="navigate to Sections section"
data-ga-category="page_nav"
data-ga-action="book-sections">
Sections
</a>
</li>
<li class="similar ">
<a href="#similar"
aria-label="navigate to Similar articles section"
data-ga-category="page_nav"
data-ga-action="similar">
Similar articles
</a>
</li>
<li class="references ">
<a href="#references"
aria-label="navigate to References section"
data-ga-category="page_nav"
data-ga-action="references">
References
</a>
</li>
<li class="publication-types ">
<a href="#publication-types"
aria-label="navigate to Publication types section"
data-ga-category="page_nav"
data-ga-action="publication-types">
Publication types
</a>
</li>
<li class="related-links ">
<a href="#related-links"
aria-label="navigate to Related information section"
data-ga-category="page_nav"
data-ga-action="related-links">
Related information
</a>
</li>
<li class="linkout ">
<a href="#linkout"
aria-label="navigate to LinkOut - more resources section"
data-ga-category="page_nav"
data-ga-action="linkout">
LinkOut - more resources
</a>
</li>
</ul>
</div>
<select class="short-view" autocomplete="off" title="navigate to selected section" aria-label="Navigate to page section">
<option value="heading">Title &amp; authors</option>
<option value="abstract">Excerpt</option>
<option value="book-sections">Sections</option>
<option value="similar">Similar articles</option>
<option value="references">References</option>
<option value="publication-types">Publication types</option>
<option value="related-links">Related information</option>
<option value="linkout">LinkOut - more resources</option>
</select>
</nav>
</div>
</aside>
<main class="article-details" id="article-details">
<!-- "Filters applied" shows only when page is redirected from search -->
<!-- because search found one result -->
<header class="heading" id="heading">
<div class="full-view" id="full-view-heading">
<div class="publication-type" >Review</div>
<h1 class="heading-title">
Pitt-Hopkins Syndrome
</h1>
<div class="inline-authors">
<div class="authors">
<div class="authors-list">
<span class="authors-list-item "><a class="full-name"
href="/?term=Dean+L&amp;cauthor_id=28520343"
ref="linksrc=author_name_link"
data-ga-category="search"
data-ga-action="author_link"
data-ga-label="Laura Dean">Laura Dean</a><sup class="affiliation-links"><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="NCBI" href="#full-view-affiliation-1" ref="linksrc=author_aff">
1
</a></sup></span>
</div>
</div>
<div class="editors">
<div class="authors-list">
<span class="authors-list-item "><a class="full-name"
href="/?term=Pratt+VM%5BEditor%5D"
ref="linksrc=author_name_link"
data-ga-category="search"
data-ga-action="author_link"
data-ga-label="Victoria M. Pratt">Victoria M. Pratt</a><sup class="affiliation-links"><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="Adjunct Professor, Clinical Pharmacology, Indiana University School of Medicine, Indianapolis, IN 46202" href="#full-view-book-affiliation-1" ref="linksrc=author_aff">
1
</a><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="Director, Scientific Affairs Pharmacogenetics, Agena Bioscience, San Diego CA 92121" href="#full-view-book-affiliation-2" ref="linksrc=author_aff">
2
</a></sup><span class="comma">,&nbsp;</span></span><span class="authors-list-item "><a class="full-name"
href="/?term=Scott+SA%5BEditor%5D"
ref="linksrc=author_name_link"
data-ga-category="search"
data-ga-action="author_link"
data-ga-label="Stuart A. Scott">Stuart A. Scott</a><sup class="affiliation-links"><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="Professor, Department of Pathology Stanford University, Palo Alto, CA 94305" href="#full-view-book-affiliation-3" ref="linksrc=author_aff">
3
</a><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="Director, Stanford Medicine Clinical Genomics Laboratory, Stanford, CA 94305" href="#full-view-book-affiliation-4" ref="linksrc=author_aff">
4
</a></sup><span class="comma">,&nbsp;</span></span><span class="authors-list-item "><a class="full-name"
href="/?term=Pirmohamed+M%5BEditor%5D"
ref="linksrc=author_name_link"
data-ga-category="search"
data-ga-action="author_link"
data-ga-label="Munir Pirmohamed">Munir Pirmohamed</a><sup class="affiliation-links"><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="David Weatherall Chair of Medicine and UK National Health Service Chair of Pharmacogenetics, University of Liverpool, Liverpool, UK" href="#full-view-book-affiliation-5" ref="linksrc=author_aff">
5
</a><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="Director, MRC Centre for Drug Safety Science and Wolfson Centre for Personalized Medicine, University of Liverpool, Liverpool, UK" href="#full-view-book-affiliation-6" ref="linksrc=author_aff">
6
</a><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="Director, Health Data Research UK North, Liverpool, UK" href="#full-view-book-affiliation-7" ref="linksrc=author_aff">
7
</a></sup><span class="comma">,&nbsp;</span></span><span class="authors-list-item "><a class="full-name"
href="/?term=Esquivel+B%5BEditor%5D"
ref="linksrc=author_name_link"
data-ga-category="search"
data-ga-action="author_link"
data-ga-label="Bernard Esquivel">Bernard Esquivel</a><sup class="affiliation-links"><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="CEO, GenXys, Vancouver, BC V6B 1B8, Canada" href="#full-view-book-affiliation-8" ref="linksrc=author_aff">
8
</a><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="VP, Clinical Innovation, ixlayer, San Francisco, CA 94105" href="#full-view-book-affiliation-9" ref="linksrc=author_aff">
9
</a></sup><span class="comma">,&nbsp;</span></span><span class="authors-list-item "><a class="full-name"
href="/?term=Kattman+BL%5BEditor%5D"
ref="linksrc=author_name_link"
data-ga-category="search"
data-ga-action="author_link"
data-ga-label="Brandi L. Kattman">Brandi L. Kattman</a><sup class="affiliation-links"><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="Chief, Medical Genetics and Human Variation, National Center for
Biotechnology Information (NCBI), National Library of Medicine, National Institutes
of Health, Bethesda, MD 20894" href="#full-view-book-affiliation-10" ref="linksrc=author_aff">
10
</a></sup><span class="comma">,&nbsp;</span></span><span class="authors-list-item "><a class="full-name"
href="/?term=Malheiro+AJ%5BEditor%5D"
ref="linksrc=author_name_link"
data-ga-category="search"
data-ga-action="author_link"
data-ga-label="Adriana J. Malheiro">Adriana J. Malheiro</a><sup class="affiliation-links"><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="Project Lead, Medical Genetics and Human Variation, National Center for
Biotechnology Information (NCBI), National Library of Medicine, National Institutes
of Health, Bethesda, MD 20894" href="#full-view-book-affiliation-11" ref="linksrc=author_aff">
11
</a></sup></span>
</div>
<span class="ending">, editors.</span>
</div>
</div>
<div class="book-citation">
<div class="citation">In: Medical Genetics Summaries [Internet]. Bethesda (MD): National Center for Biotechnology Information (US); 2012.</div>
<div class="chapter-date"><span class="chapter-contribution-date" ><time class="chapter-contribution-date-value" datetime="2012-03-08"
>2012 Mar 8</time></span><span class="chapter-updated-date-label"> [updated </span><span class="chapter-updated-date" ><time class="chapter-updated-date-value" datetime="2018-08-01"
>2018 Aug 1</time></span><span class="chapter-updated-date-label">]</span><span class="chapter-date-punctuation">.</span></div>
</div>
<div class="short-article-details">
Affiliations
<button
class="more-details"
id="toggle-authors"
data-alt-text="Collapse"
aria-controls="expanded-authors"
aria-expanded="false"
data-pinger-ignore
data-fetch-url="/28520343/long-authors/"
data-id-prefix="">
<span class="title">
Expand
</span>
</button>
</div>
<div class="extended-article-details" id="expanded-authors" aria-hidden="true">
<div class="expanded-authors" id="full-view-expanded-authors">
<div class="affiliations">
<h3 class="title">
Affiliation
</h3>
<ul class="item-list">
<li data-affiliation-id="full-view-affiliation-1"
id="full-view-affiliation-1"
><sup class="key">1</sup> NCBI</li>
</ul>
</div>
<div class="affiliations">
<h3 class="title">
Book Affiliations
</h3>
<ul class="item-list">
<li data-affiliation-id="full-view-book-affiliation-1"
id="full-view-book-affiliation-1"
><sup class="key">1</sup> Adjunct Professor, Clinical Pharmacology, Indiana University School of Medicine, Indianapolis, IN 46202</li>
<li data-affiliation-id="full-view-book-affiliation-2"
id="full-view-book-affiliation-2"
><sup class="key">2</sup> Director, Scientific Affairs Pharmacogenetics, Agena Bioscience, San Diego CA 92121</li>
<li data-affiliation-id="full-view-book-affiliation-3"
id="full-view-book-affiliation-3"
><sup class="key">3</sup> Professor, Department of Pathology Stanford University, Palo Alto, CA 94305</li>
<li data-affiliation-id="full-view-book-affiliation-4"
id="full-view-book-affiliation-4"
><sup class="key">4</sup> Director, Stanford Medicine Clinical Genomics Laboratory, Stanford, CA 94305</li>
<li data-affiliation-id="full-view-book-affiliation-5"
id="full-view-book-affiliation-5"
><sup class="key">5</sup> David Weatherall Chair of Medicine and UK National Health Service Chair of Pharmacogenetics, University of Liverpool, Liverpool, UK</li>
<li data-affiliation-id="full-view-book-affiliation-6"
id="full-view-book-affiliation-6"
><sup class="key">6</sup> Director, MRC Centre for Drug Safety Science and Wolfson Centre for Personalized Medicine, University of Liverpool, Liverpool, UK</li>
<li data-affiliation-id="full-view-book-affiliation-7"
id="full-view-book-affiliation-7"
><sup class="key">7</sup> Director, Health Data Research UK North, Liverpool, UK</li>
<li data-affiliation-id="full-view-book-affiliation-8"
id="full-view-book-affiliation-8"
><sup class="key">8</sup> CEO, GenXys, Vancouver, BC V6B 1B8, Canada</li>
<li data-affiliation-id="full-view-book-affiliation-9"
id="full-view-book-affiliation-9"
><sup class="key">9</sup> VP, Clinical Innovation, ixlayer, San Francisco, CA 94105</li>
<li data-affiliation-id="full-view-book-affiliation-10"
id="full-view-book-affiliation-10"
><sup class="key">10</sup> Chief, Medical Genetics and Human Variation, National Center for
Biotechnology Information (NCBI), National Library of Medicine, National Institutes
of Health, Bethesda, MD 20894</li>
<li data-affiliation-id="full-view-book-affiliation-11"
id="full-view-book-affiliation-11"
><sup class="key">11</sup> Project Lead, Medical Genetics and Human Variation, National Center for
Biotechnology Information (NCBI), National Library of Medicine, National Institutes
of Health, Bethesda, MD 20894</li>
</ul>
</div>
</div>
</div>
<ul class="identifiers" id="full-view-identifiers">
<li>
<span class="identifier pubmed">
<span class="id-label">
PMID:
</span>
<strong class="current-id" title="PubMed ID">28520343</strong>
</span>
</li>
<li>
<span class="identifier bookshelf">
<span class="id-label">
Bookshelf ID:
</span>
<a class="id-link"
target="_blank"
rel="noopener"
ref="linksrc=article_id_link&amp;article_id=NBK66129&amp;id_type=Bookshelf"
href="https://www.ncbi.nlm.nih.gov/books/NBK66129/"
data-ga-category="full_text"
data-ga-action=""
>
NBK66129
</a>
</span>
</li>
</ul>
<span class="free-label">Free Books &amp; Documents</span>
<div class="in-clipboard-label " hidden>
Item in Clipboard
</div>
</div>
<div class="short-view" id="short-view-heading">
<div class="publication-type" >Review</div>
<h1 class="heading-title">
Pitt-Hopkins Syndrome
</h1>
<div class="short-citation">
<span class="authors-list">
<span class="authors-list-item only-author"><span class="full-name">Laura Dean</span><span class="citation-separator">.</span></span>
</span>
</div>
<span class="free-label">Free Books &amp; Documents</span>
<div class="more-article-details-section with-display-settings">
<button class="more-article-details"
id="toggle-article-details"
data-alt-text="Hide details"
ref="linksrc=toggle_article_details"
aria-controls="full-article-details"
aria-expanded="false"
data-fetch-url="/28520343/long-authors/"
data-id-prefix="">
<span class="title">Show details</span>
</button>
<div class="display-options" data-format-key="format"
data-default-format-value="abstract"
data-current-format-value="abstract" role="region">
<button
class="trigger usa-button"
title="Change format"
data-ga-category="display_options"
data-ga-action="display_options_dialog">
<span class="button-label">Display options</span>
</button>
<div class="dropdown" hidden>
<div class="title">
Display options
</div>
<div class="content">
<div class="format-container">
<span class="option-label">
Format
</span>
<select name="format" data-initial-value="abstract" aria-label="Display format" id="mobile-display-format">
<option value="abstract">Abstract</option>
<option value="pubmed">PubMed</option>
<option value="pmid">PMID</option>
</select>
</div>
</div>
</div>
</div>
</div>
<div class="extended-article-details" id="full-article-details" aria-hidden="true">
<div class="book-citation">
<div class="citation">In: Medical Genetics Summaries [Internet]. Bethesda (MD): National Center for Biotechnology Information (US); 2012.</div>
<div class="chapter-date"><span class="chapter-contribution-date" ><time class="chapter-contribution-date-value" datetime="2012-03-08"
>2012 Mar 8</time></span><span class="chapter-updated-date-label"> [updated </span><span class="chapter-updated-date" ><time class="chapter-updated-date-value" datetime="2018-08-01"
>2018 Aug 1</time></span><span class="chapter-updated-date-label">]</span><span class="chapter-date-punctuation">.</span></div>
</div>
<div class="expanded-authors" id="short-view-expanded-authors">
<div class="authors">
<h3 class="title">
Author
</h3>
<div class="authors-list">
<span class="authors-list-item "><a class="full-name"
href="/?term=Dean+L&amp;cauthor_id=28520343"
ref="linksrc=author_name_link"
data-ga-category="search"
data-ga-action="author_link"
data-ga-label="Laura Dean">Laura Dean</a><sup class="affiliation-links"><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="NCBI" href="#short-view-affiliation-1" ref="linksrc=author_aff">
1
</a></sup></span>
</div>
</div>
<div class="editors">
<h3 class="title">
Book Editors
</h3>
<div class="authors-list">
<span class="authors-list-item "><a class="full-name"
href="/?term=Pratt+VM%5BEditor%5D"
ref="linksrc=author_name_link"
data-ga-category="search"
data-ga-action="author_link"
data-ga-label="Victoria M. Pratt">Victoria M. Pratt</a><sup class="affiliation-links"><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="Adjunct Professor, Clinical Pharmacology, Indiana University School of Medicine, Indianapolis, IN 46202" href="#short-view-book-affiliation-1" ref="linksrc=author_aff">
1
</a><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="Director, Scientific Affairs Pharmacogenetics, Agena Bioscience, San Diego CA 92121" href="#short-view-book-affiliation-2" ref="linksrc=author_aff">
2
</a></sup><span class="comma">,&nbsp;</span></span><span class="authors-list-item "><a class="full-name"
href="/?term=Scott+SA%5BEditor%5D"
ref="linksrc=author_name_link"
data-ga-category="search"
data-ga-action="author_link"
data-ga-label="Stuart A. Scott">Stuart A. Scott</a><sup class="affiliation-links"><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="Professor, Department of Pathology Stanford University, Palo Alto, CA 94305" href="#short-view-book-affiliation-3" ref="linksrc=author_aff">
3
</a><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="Director, Stanford Medicine Clinical Genomics Laboratory, Stanford, CA 94305" href="#short-view-book-affiliation-4" ref="linksrc=author_aff">
4
</a></sup><span class="comma">,&nbsp;</span></span><span class="authors-list-item "><a class="full-name"
href="/?term=Pirmohamed+M%5BEditor%5D"
ref="linksrc=author_name_link"
data-ga-category="search"
data-ga-action="author_link"
data-ga-label="Munir Pirmohamed">Munir Pirmohamed</a><sup class="affiliation-links"><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="David Weatherall Chair of Medicine and UK National Health Service Chair of Pharmacogenetics, University of Liverpool, Liverpool, UK" href="#short-view-book-affiliation-5" ref="linksrc=author_aff">
5
</a><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="Director, MRC Centre for Drug Safety Science and Wolfson Centre for Personalized Medicine, University of Liverpool, Liverpool, UK" href="#short-view-book-affiliation-6" ref="linksrc=author_aff">
6
</a><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="Director, Health Data Research UK North, Liverpool, UK" href="#short-view-book-affiliation-7" ref="linksrc=author_aff">
7
</a></sup><span class="comma">,&nbsp;</span></span><span class="authors-list-item "><a class="full-name"
href="/?term=Esquivel+B%5BEditor%5D"
ref="linksrc=author_name_link"
data-ga-category="search"
data-ga-action="author_link"
data-ga-label="Bernard Esquivel">Bernard Esquivel</a><sup class="affiliation-links"><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="CEO, GenXys, Vancouver, BC V6B 1B8, Canada" href="#short-view-book-affiliation-8" ref="linksrc=author_aff">
8
</a><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="VP, Clinical Innovation, ixlayer, San Francisco, CA 94105" href="#short-view-book-affiliation-9" ref="linksrc=author_aff">
9
</a></sup><span class="comma">,&nbsp;</span></span><span class="authors-list-item "><a class="full-name"
href="/?term=Kattman+BL%5BEditor%5D"
ref="linksrc=author_name_link"
data-ga-category="search"
data-ga-action="author_link"
data-ga-label="Brandi L. Kattman">Brandi L. Kattman</a><sup class="affiliation-links"><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="Chief, Medical Genetics and Human Variation, National Center for
Biotechnology Information (NCBI), National Library of Medicine, National Institutes
of Health, Bethesda, MD 20894" href="#short-view-book-affiliation-10" ref="linksrc=author_aff">
10
</a></sup><span class="comma">,&nbsp;</span></span><span class="authors-list-item "><a class="full-name"
href="/?term=Malheiro+AJ%5BEditor%5D"
ref="linksrc=author_name_link"
data-ga-category="search"
data-ga-action="author_link"
data-ga-label="Adriana J. Malheiro">Adriana J. Malheiro</a><sup class="affiliation-links"><span class="author-sup-separator">&nbsp;</span><a class="affiliation-link" title="Project Lead, Medical Genetics and Human Variation, National Center for
Biotechnology Information (NCBI), National Library of Medicine, National Institutes
of Health, Bethesda, MD 20894" href="#short-view-book-affiliation-11" ref="linksrc=author_aff">
11
</a></sup></span>
</div>
</div>
<div class="affiliations">
<h3 class="title">
Affiliation
</h3>
<ul class="item-list">
<li data-affiliation-id="short-view-affiliation-1"
id="short-view-affiliation-1"
><sup class="key">1</sup> NCBI</li>
</ul>
</div>
<div class="affiliations">
<h3 class="title">
Book Affiliations
</h3>
<ul class="item-list">
<li data-affiliation-id="short-view-book-affiliation-1"
id="short-view-book-affiliation-1"
><sup class="key">1</sup> Adjunct Professor, Clinical Pharmacology, Indiana University School of Medicine, Indianapolis, IN 46202</li>
<li data-affiliation-id="short-view-book-affiliation-2"
id="short-view-book-affiliation-2"
><sup class="key">2</sup> Director, Scientific Affairs Pharmacogenetics, Agena Bioscience, San Diego CA 92121</li>
<li data-affiliation-id="short-view-book-affiliation-3"
id="short-view-book-affiliation-3"
><sup class="key">3</sup> Professor, Department of Pathology Stanford University, Palo Alto, CA 94305</li>
<li data-affiliation-id="short-view-book-affiliation-4"
id="short-view-book-affiliation-4"
><sup class="key">4</sup> Director, Stanford Medicine Clinical Genomics Laboratory, Stanford, CA 94305</li>
<li data-affiliation-id="short-view-book-affiliation-5"
id="short-view-book-affiliation-5"
><sup class="key">5</sup> David Weatherall Chair of Medicine and UK National Health Service Chair of Pharmacogenetics, University of Liverpool, Liverpool, UK</li>
<li data-affiliation-id="short-view-book-affiliation-6"
id="short-view-book-affiliation-6"
><sup class="key">6</sup> Director, MRC Centre for Drug Safety Science and Wolfson Centre for Personalized Medicine, University of Liverpool, Liverpool, UK</li>
<li data-affiliation-id="short-view-book-affiliation-7"
id="short-view-book-affiliation-7"
><sup class="key">7</sup> Director, Health Data Research UK North, Liverpool, UK</li>
<li data-affiliation-id="short-view-book-affiliation-8"
id="short-view-book-affiliation-8"
><sup class="key">8</sup> CEO, GenXys, Vancouver, BC V6B 1B8, Canada</li>
<li data-affiliation-id="short-view-book-affiliation-9"
id="short-view-book-affiliation-9"
><sup class="key">9</sup> VP, Clinical Innovation, ixlayer, San Francisco, CA 94105</li>
<li data-affiliation-id="short-view-book-affiliation-10"
id="short-view-book-affiliation-10"
><sup class="key">10</sup> Chief, Medical Genetics and Human Variation, National Center for
Biotechnology Information (NCBI), National Library of Medicine, National Institutes
of Health, Bethesda, MD 20894</li>
<li data-affiliation-id="short-view-book-affiliation-11"
id="short-view-book-affiliation-11"
><sup class="key">11</sup> Project Lead, Medical Genetics and Human Variation, National Center for
Biotechnology Information (NCBI), National Library of Medicine, National Institutes
of Health, Bethesda, MD 20894</li>
</ul>
</div>
</div>
<ul class="identifiers" id="short-view-identifiers">
<li>
<span class="identifier pubmed">
<span class="id-label">
PMID:
</span>
<strong class="current-id" title="PubMed ID">28520343</strong>
</span>
</li>
<li>
<span class="identifier bookshelf">
<span class="id-label">
Bookshelf ID:
</span>
<a class="id-link"
target="_blank"
rel="noopener"
ref="linksrc=article_id_link&amp;article_id=NBK66129&amp;id_type=Bookshelf"
href="https://www.ncbi.nlm.nih.gov/books/NBK66129/"
data-ga-category="full_text"
data-ga-action=""
>
NBK66129
</a>
</span>
</li>
</ul>
<div class="in-clipboard-label " hidden>
Item in Clipboard
</div>
</div>
</div>
</header>
<div class="actions-buttons inline"><div class="inner-wrap"><button class="full-text-links-button full-text-links-dialog-trigger"
title="Open dialog with full text links"
ref="linksrc=full_text_links">
Full text links
</button><button class="citation-button citation-dialog-trigger"
aria-label="Open dialog with citation text in different styles"
data-ga-category="save_share"
data-ga-action="cite"
data-ga-label="open"
data-all-citations-url="/28520343/citations/"
data-citation-style="nlm"
data-pubmed-format-link="/28520343/export/"><span class="button-label">Cite</span></button><button class="more-actions-button more-actions-dialog-trigger"
title="Open dialog with more actions to take"
ref="linksrc=more_actions_btn"></button><div class="display-options" data-format-key="format"
data-default-format-value="abstract"
data-current-format-value="abstract" role="region"><button
class="trigger usa-button"
title="Change format"
data-ga-category="display_options"
data-ga-action="display_options_dialog"><span class="button-label">Display options</span></button><div class="dropdown" hidden><div class="title">
Display options
</div><div class="content"><div class="format-container"><span class="option-label">
Format
</span><select name="format" data-initial-value="abstract" aria-label="Display format" id="inline-actions-display-format"><option value="abstract">Abstract</option><option value="pubmed">PubMed</option><option value="pmid">PMID</option></select></div></div></div></div></div></div>
<div class="abstract" id="abstract">
<h2 class="title">
Excerpt
</h2>
<div class="abstract-content selected"
id="eng-abstract">
<p>
Pitt-Hopkins syndrome is a rare neurodevelopmental disorder caused by loss of function of one allele of the <i>TCF4</i> gene. Most cases result from a <i>de novo</i> mutation that leads to a functional loss of one copy of the <i>TCF4</i> gene. Other cases result from a deletion of the chromosome region in which the <i>TCF4</i> gene is located (18q21.2).
</p>
<p>
Pitt-Hopkins syndrome is characterized by distinctive facial features (e.g., deep-set eyes, prominent nose, wide mouth with widely spaced teeth), global developmental delay, and moderate-severe intellectual disability. Breathing problems and epilepsy often occur.
</p>
<p>
Once Pitt-Hopkins syndrome has been suspected clinically, the diagnosis is confirmed by molecular genetic testing of the <i>TCF4</i> gene.
</p>
</div>
</div>
<p class="disclaimer" id="disclaimer">
<a href="/disclaimer/" target="_blank" data-ga-category="literature_resources"
data-ga-action="disclaimer_link" data-ga-label="under_abstract">PubMed Disclaimer</a>
</p>
<div class="book-sections" id="book-sections">
<h2 class="title">
Sections
</h2>
<ul>
<li>
<a href="https://www.ncbi.nlm.nih.gov/books/NBK66129/#pitthopkins.Introduction" target="_blank" rel="noopener" ref="linksrc=book_abstract_section_link">
Introduction
</a>
</li>
<li>
<a href="https://www.ncbi.nlm.nih.gov/books/NBK66129/#pitthopkins.Characteristics" target="_blank" rel="noopener" ref="linksrc=book_abstract_section_link">
Characteristics
</a>
</li>
<li>
<a href="https://www.ncbi.nlm.nih.gov/books/NBK66129/#pitthopkins.Genetics" target="_blank" rel="noopener" ref="linksrc=book_abstract_section_link">
Genetics
</a>
</li>
<li>
<a href="https://www.ncbi.nlm.nih.gov/books/NBK66129/#pitthopkins.Diagnosis" target="_blank" rel="noopener" ref="linksrc=book_abstract_section_link">
Diagnosis
</a>
</li>
<li>
<a href="https://www.ncbi.nlm.nih.gov/books/NBK66129/#pitthopkins.Management" target="_blank" rel="noopener" ref="linksrc=book_abstract_section_link">
Management
</a>
</li>
<li>
<a href="https://www.ncbi.nlm.nih.gov/books/NBK66129/#pitthopkins.Genetic_Testing" target="_blank" rel="noopener" ref="linksrc=book_abstract_section_link">
Genetic Testing
</a>
</li>
<li>
<a href="https://www.ncbi.nlm.nih.gov/books/NBK66129/#pitthopkins.Genetic_Counseling" target="_blank" rel="noopener" ref="linksrc=book_abstract_section_link">
Genetic Counseling
</a>
</li>
<li>
<a href="https://www.ncbi.nlm.nih.gov/books/NBK66129/#pitthopkins.Acknowledgements" target="_blank" rel="noopener" ref="linksrc=book_abstract_section_link">
Acknowledgements
</a>
</li>
<li>
<a href="https://www.ncbi.nlm.nih.gov/books/NBK66129/#pitthopkins.Version_History" target="_blank" rel="noopener" ref="linksrc=book_abstract_section_link">
Version History
</a>
</li>
<li>
<a href="https://www.ncbi.nlm.nih.gov/books/NBK66129/#pitthopkins.References" target="_blank" rel="noopener" ref="linksrc=book_abstract_section_link">
References
</a>
</li>
</ul>
</div>
<div class="similar-articles" id="similar">
<h2 class="title">
Similar articles
</h2>
<ul class="articles-list" id="similar-articles-list">
<li class="full-docsum">
<div class="docsum-content" style="display:inline;">
<a class="docsum-title"
href="/27617128/"
ref="article_id=27617128&amp;linksrc=similar_articles_link&amp;ordinalpos=1"
data-ga-category="similar_article"
data-ga-action="27617128"
data-ga-label="">
Pitt-Hopkins Syndrome and Differential Diagnosis: A Molecular and Clinical Challenge.
</a>
<div class="docsum-citation full-citation">
<span class="docsum-authors full-authors">Marangi G, Zollino M.</span>
<span class="docsum-authors short-authors">Marangi G, et al.</span>
<span class="docsum-journal-citation full-journal-citation">J Pediatr Genet. 2015 Sep;4(3):168-76. doi: 10.1055/s-0035-1564570. Epub 2015 Sep 25.</span>
<span class="docsum-journal-citation short-journal-citation">J Pediatr Genet. 2015.</span>
<span class="citation-part">PMID: <span class="docsum-pmid">27617128</span></span>
<span class="free-resources spaced-citation-item citation-part">Free PMC article.</span>
<span class="publication-type spaced-citation-item citation-part">Review.</span>
</div>
</div>
</li>
<li class="full-docsum">
<div class="docsum-content" style="display:inline;">
<a class="docsum-title"
href="/33069932/"
ref="article_id=33069932&amp;linksrc=similar_articles_link&amp;ordinalpos=2"
data-ga-category="similar_article"
data-ga-action="33069932"
data-ga-label="">
Various haploinsufficiency mechanisms in Pitt-Hopkins syndrome.
</a>
<div class="docsum-citation full-citation">
<span class="docsum-authors full-authors">Sparber P, Filatova A, Anisimova I, Markova T, Voinova V, Chuhrova A, Tabakov V, Skoblov M.</span>
<span class="docsum-authors short-authors">Sparber P, et al.</span>
<span class="docsum-journal-citation full-journal-citation">Eur J Med Genet. 2020 Dec;63(12):104088. doi: 10.1016/j.ejmg.2020.104088. Epub 2020 Oct 15.</span>
<span class="docsum-journal-citation short-journal-citation">Eur J Med Genet. 2020.</span>
<span class="citation-part">PMID: <span class="docsum-pmid">33069932</span></span>
</div>
</div>
</li>
<li class="full-docsum">
<div class="docsum-content" style="display:inline;">
<a class="docsum-title"
href="/29604340/"
ref="article_id=29604340&amp;linksrc=similar_articles_link&amp;ordinalpos=3"
data-ga-category="similar_article"
data-ga-action="29604340"
data-ga-label="">
A case of Pitt-hopkins Syndrome with de novo mutation in TCF4: Clinical features and treatment for epilepsy.
</a>
<div class="docsum-citation full-citation">
<span class="docsum-authors full-authors">Liu Y, Guo Y, Liu P, Li F, Yang C, Song J, Hu J, Xin D, Chen Z.</span>
<span class="docsum-authors short-authors">Liu Y, et al.</span>
<span class="docsum-journal-citation full-journal-citation">Int J Dev Neurosci. 2018 Jun;67:51-54. doi: 10.1016/j.ijdevneu.2018.03.010. Epub 2018 Mar 28.</span>
<span class="docsum-journal-citation short-journal-citation">Int J Dev Neurosci. 2018.</span>
<span class="citation-part">PMID: <span class="docsum-pmid">29604340</span></span>
</div>
</div>
</li>
<li class="full-docsum">
<div class="docsum-content" style="display:inline;">
<a class="docsum-title"
href="/22670138/"
ref="article_id=22670138&amp;linksrc=similar_articles_link&amp;ordinalpos=4"
data-ga-category="similar_article"
data-ga-action="22670138"
data-ga-label="">
Pitt-Hopkins Syndrome.
</a>
<div class="docsum-citation full-citation">
<span class="docsum-authors full-authors">Peippo M, Ignatius J.</span>
<span class="docsum-authors short-authors">Peippo M, et al.</span>
<span class="docsum-journal-citation full-journal-citation">Mol Syndromol. 2012 Apr;2(3-5):171-180. doi: 10.1159/000335287. Epub 2011 Dec 29.</span>
<span class="docsum-journal-citation short-journal-citation">Mol Syndromol. 2012.</span>
<span class="citation-part">PMID: <span class="docsum-pmid">22670138</span></span>
<span class="free-resources spaced-citation-item citation-part">Free PMC article.</span>
</div>
</div>
</li>
<li class="full-docsum">
<div class="docsum-content" style="display:inline;">
<a class="docsum-title"
href="/27625870/"
ref="article_id=27625870&amp;linksrc=similar_articles_link&amp;ordinalpos=5"
data-ga-category="similar_article"
data-ga-action="27625870"
data-ga-label="">
Pitt-Hopkins syndrome: Mental retardation, psychomotor and developmental delays with facial dysmorphism.
</a>
<div class="docsum-citation full-citation">
<span class="docsum-authors full-authors">Avina Fierro JA, Avina DA.</span>
<span class="docsum-authors short-authors">Avina Fierro JA, et al.</span>
<span class="docsum-journal-citation full-journal-citation">J Pediatr Genet. 2014 Sep;3(3):141-5. doi: 10.3233/PGE-14094.</span>
<span class="docsum-journal-citation short-journal-citation">J Pediatr Genet. 2014.</span>
<span class="citation-part">PMID: <span class="docsum-pmid">27625870</span></span>
<span class="free-resources spaced-citation-item citation-part">Free PMC article.</span>
<span class="publication-type spaced-citation-item citation-part">Review.</span>
</div>
</div>
</li>
</ul>
<div class="actions-bar">
<a
class="show-all-linked-articles"
data-href="/?linkname=pubmed_pubmed&from_uid=28520343"
data-ga-category="similar_article"
data-ga-action="show_all"
>
See all similar articles
</a>
</div>
</div>
<div class="references" id="references">
<h2 class="title">
References
</h2>
<div id='top-references-list' class="references-lists-container">
<div class="refs-list">
<ol id="top-references-list-1" class="references-list">
<li>
<ol class="references-and-notes-list">
<li
class="skip-numbering"
value="1">
Sweatt J.D. Pitt-Hopkins Syndrome: intellectual disability due to loss of TCF4-regulated gene transcription. Exp Mol Med. 2013 May 03;45:e21.
-
<a
class="reference-link"
href="https://pmc.ncbi.nlm.nih.gov/articles/PMC3674405/"
ref="linksrc=references_link&amp;ordinalpos=1"
data-ga-category="reference"
data-ga-action="PMC3674405"
>
PMC
</a>
-
<a
class="reference-link"
href="/23640545/"
ref="linksrc=references_link&amp;ordinalpos=2"
data-ga-category="reference"
data-ga-action="23640545"
>
PubMed
</a>
</li>
</ol>
</li>
<li>
<ol class="references-and-notes-list">
<li
class="skip-numbering"
value="1">
Peippo M., Ignatius J. Pitt-Hopkins Syndrome. Mol Syndromol. 2012 Apr;2(3-5):171180.
-
<a
class="reference-link"
href="https://pmc.ncbi.nlm.nih.gov/articles/PMC3366706/"
ref="linksrc=references_link&amp;ordinalpos=1"
data-ga-category="reference"
data-ga-action="PMC3366706"
>
PMC
</a>
-
<a
class="reference-link"
href="/22670138/"
ref="linksrc=references_link&amp;ordinalpos=2"
data-ga-category="reference"
data-ga-action="22670138"
>
PubMed
</a>
</li>
</ol>
</li>
<li>
<ol class="references-and-notes-list">
<li
class="skip-numbering"
value="1">
Marangi G., Zollino M. Pitt-Hopkins Syndrome and Differential Diagnosis: A Molecular and Clinical Challenge. J Pediatr Genet. 2015 Sep;4(3):16876.
-
<a
class="reference-link"
href="https://pmc.ncbi.nlm.nih.gov/articles/PMC4918722/"
ref="linksrc=references_link&amp;ordinalpos=1"
data-ga-category="reference"
data-ga-action="PMC4918722"
>
PMC
</a>
-
<a
class="reference-link"
href="/27617128/"
ref="linksrc=references_link&amp;ordinalpos=2"
data-ga-category="reference"
data-ga-action="27617128"
>
PubMed
</a>
</li>
</ol>
</li>
<li>
<ol class="references-and-notes-list">
<li
class="skip-numbering"
value="1">
Amiel J., Rio M., de Pontual L., Redon R., et al. Mutations in TCF4, encoding a class I basic helix-loop-helix transcription factor, are responsible for Pitt-Hopkins syndrome, a severe epileptic encephalopathy associated with autonomic dysfunction. American journal of human genetics. 2007 May;80(5):98893.
-
<a
class="reference-link"
href="https://pmc.ncbi.nlm.nih.gov/articles/PMC1852736/"
ref="linksrc=references_link&amp;ordinalpos=1"
data-ga-category="reference"
data-ga-action="PMC1852736"
>
PMC
</a>
-
<a
class="reference-link"
href="/17436254/"
ref="linksrc=references_link&amp;ordinalpos=2"
data-ga-category="reference"
data-ga-action="17436254"
>
PubMed
</a>
</li>
</ol>
</li>
<li>
<ol class="references-and-notes-list">
<li
class="skip-numbering"
value="1">
Zweier C., Peippo M.M., Hoyer J., Sousa S., et al. Haploinsufficiency of TCF4 causes syndromal mental retardation with intermittent hyperventilation (Pitt-Hopkins syndrome). American journal of human genetics. 2007 May;80(5):9941001.
-
<a
class="reference-link"
href="https://pmc.ncbi.nlm.nih.gov/articles/PMC1852727/"
ref="linksrc=references_link&amp;ordinalpos=1"
data-ga-category="reference"
data-ga-action="PMC1852727"
>
PMC
</a>
-
<a
class="reference-link"
href="/17436255/"
ref="linksrc=references_link&amp;ordinalpos=2"
data-ga-category="reference"
data-ga-action="17436255"
>
PubMed
</a>
</li>
</ol>
</li>
</ol>
<div class="actions-bar">
<button
class="show-all"
ref="linksrc=show_all_references_link"
aria-controls="top-references-list-1"
data-next-page-url="/28520343/references/"
data-ga-category="reference"
data-ga-action="show_more"
>
Show all 11 references
</button>
</div>
</div>
</div>
</div>
<div id="publication-types" class="publication-types keywords-section">
<h2 class="title">
Publication types
</h2>
<ul class="keywords-list"><li><div class="keyword-actions dropdown-block"><button class="keyword-actions-trigger trigger keyword-link"
aria-label="Toggle dropdown menu for keyword Review"
tabindex="0"
aria-controls="keyword-actions-publication-types-0"
aria-expanded="false"
data-pinger-ignore>
Review
</button><div id="keyword-actions-publication-types-0"
class="keyword-actions-dropdown dropdown dropdown-container"
hidden
aria-label="Dropdown menu for keyword Review"><div class="title">Actions</div><div class="content"><ul class="keyword-actions-links"><li><a class="search-in-pubmed-link dropdown-block-link"
href="/?term=%22Review%22%5Bpt%5D&amp;sort=date&amp;sort_order=desc"
data-href="/?term=%22Review%22%5Bpt%5D&amp;sort=date&amp;sort_order=desc"
ref="linksrc=search_in_pubmed_keyword_link&amp;keyword=&quot;Review&quot;[pt]"
data-ga-category="search"
data-ga-action="pub_type"
data-ga-label="Review">
Search in PubMed
</a></li><li><a class="search-in-mesh-link dropdown-block-link"
ref="linksrc=search_in_mesh_link"
href="https://www.ncbi.nlm.nih.gov/mesh?term=Review"
data-ga-category="search_mesh"
data-ga-action="pub_type_link"
data-ga-label="Review">
Search in MeSH
</a></li><li><a class="add-to-search-link dropdown-block-link"
ref="linksrc=add_to_search_link"
role="button"
data-search-term="&quot;Review&quot;[pt]"
data-ga-category="search"
data-ga-action="add_to_search"
data-ga-label="&quot;Review&quot;[pt]"
href="#">
Add to Search
</a></li></ul></div></div></div></li></ul>
</div>
<div id="related-links" class="related-links">
<h2 class="title">
Related information
</h2>
<ul class="related-links-list"><li><a title="Related information in MedGen" href="https://www.ncbi.nlm.nih.gov/medgen?linkname=pubmed_medgen&amp;from_uid=28520343"
ref="log$=recordlinks&logdbfrom=pubmed&ncbi_uid=28520343&ordinalpos=1&linkpos=1">
MedGen
</a></li></ul>
</div>
<div id="linkout" class="linkout">
<h2 class="title">
LinkOut - more resources
</h2>
<ul class="linkout-list"><li><h3 class="linkout-category">Full Text Sources</h3><ul class="linkout-category-links"><li><a
href="https://www.ncbi.nlm.nih.gov/books/NBK66129"
target="_blank"
rel="noopener"
ref="linksrc=linkout_link&PrId=3057&uid=28520343&db=pubmed&itool=Abstract&log$=linkoutlink"
data-ga-category="link_out"
data-ga-action="Full Text Sources"
data-ga-label="NCBI Bookshelf"
>
NCBI Bookshelf
</a></li></ul></li></ul>
</div>
</main>
<div class="overlay" role="dialog" aria-label="Full Text Links Dialog">
<div id="full-text-links-dialog" class="dialog full-text-links-dialog">
<strong class="title">Full text links</strong>
<button class="close-overlay" tabindex="2">[x]</button>
<div class="full-text-links-list">
<a class="link-item
book
dialog-focus"
href="https://www.ncbi.nlm.nih.gov/books/NBK66129"
target="_blank"
rel="noopener"
ref="linksrc=fulltextorjournal_fulltext&amp;is_pmc=False&amp;PrId=3057&amp;itool=Abstract-def&amp;log$=linkouticon&amp;uid=28520343&amp;db=pubmed"
title="See full text options at NCBI Bookshelf"
tabindex="1"
data-ga-category="full_text"
data-ga-action="NCBI Bookshelf"
data-ga-label="28520343"
><img class="book-icon" src="https://cdn.ncbi.nlm.nih.gov/corehtml/pmc/pmcgifs/bookshelf/thumbs/th-gtrbook.png" alt="book cover photo"><div class="book-icon-label"><div class="book-icon-label-title">Medical Genetics Summaries [Internet]</div></div><span class="text">
NCBI Bookshelf
</span></a>
</div>
</div>
</div>
<div class="overlay" role="dialog" aria-label="Citation Dialog">
<div class="dialog citation-dialog">
<button class="close-overlay" tabindex="1">[x]</button>
<div class="title">Cite</div>
<div class="citation-text-block">
<div class="citation-text"></div>
<div class="citation-actions">
<button
class="copy-button dialog-focus"
data-ga-category="save_share"
data-ga-action="cite"
data-ga-label="copy"
tabindex="2">
Copy
</button>
<form method="post">
<input type="hidden" name="csrfmiddlewaretoken" value="eTShjUKAsON7v0v96lf4Puv165747z3SvGCmWKdW2pABprBZJES6jC1FE9Pg0aBc">
<button type="submit"
class="export-button"
data-ga-category="save_share"
data-ga-action="cite"
data-ga-label="download"
title="Download a file for external citation management software"
tabindex="3">
<span class="download-title">Download .nbib</span>
<span class="download-title-mobile">.nbib</span>
</button>
</form>
<div class="citation-style-selector-wrapper">
<label class="selector-label">Format:</label>
<select aria-label="Format" class="citation-style-selector" tabindex="4">
<option data-style-url-name="ama"
value="AMA"
>
AMA
</option>
<option data-style-url-name="apa"
value="APA"
>
APA
</option>
<option data-style-url-name="mla"
value="MLA"
>
MLA
</option>
<option data-style-url-name="nlm"
value="NLM"
selected="selected">
NLM
</option>
</select>
</div>
</div>
</div>
</div>
</div>
<div class="overlay" role="dialog" aria-label="More Actions Dialog">
<div id="more-actions-dialog" class="dialog more-actions-dialog">
<strong class="title">Send To</strong>
<ul class="more-actions-links">
<li><a id="clipboard-trigger" role="button" class="submit-button clipboard-trigger clipboard-trigger-target dialog-focus link-item " href="#">Clipboard</a></li>
<li><a class="email-trigger link-item" role="button" href="#">Email</a></li>
<li><a class="save-trigger link-item" role="button" href="#">Save</a></li>
<li><a class="link-item" role="button" href="https://account.ncbi.nlm.nih.gov/?back_url=https%3A%2F%2Fpubmed.ncbi.nlm.nih.gov%2F28520343%2F%23open-bibliography-panel">My Bibliography</a></li>
<li><a class="link-item" role="button" href="https://account.ncbi.nlm.nih.gov/?back_url=https%3A%2F%2Fpubmed.ncbi.nlm.nih.gov%2F28520343%2F%23open-collections-panel">Collections</a></li>
<li><a class="citation-manager-trigger link-item" role="button" href="#">Citation Manager</a></li>
</ul>
<button class="close-overlay">[x]</button>
</div>
</div>
</div>
<div id="ncbi-footer">
<div class="literature-footer" role="complementary" title="Links to NCBI Literature Resources">
<div class="usa-grid">
<p class="literature-footer-text">NCBI Literature Resources</p>
<p class="literature-footer-text">
<a class="literature-footer-link" data-ga-category="literature_resources" data-ga-action="mesh_link" href="https://www.ncbi.nlm.nih.gov/mesh/">MeSH</a>
<a class="literature-footer-link" data-ga-category="literature_resources" data-ga-action="pmc_link" href="https://www.ncbi.nlm.nih.gov/pmc/">PMC</a>
<a class="literature-footer-link" data-ga-category="literature_resources" data-ga-action="bookshelf_link" href="https://www.ncbi.nlm.nih.gov/books">Bookshelf</a>
<a class="literature-footer-link" data-ga-category="literature_resources" data-ga-action="disclaimer_link" href="/disclaimer/">Disclaimer</a>
</p>
<p class="literature-footer-text attribution-statement">The PubMed wordmark and PubMed logo are registered trademarks of the U.S. Department of Health and Human Services (HHS). Unauthorized use of these marks is strictly prohibited.</p>
</div>
</div>
<!-- ========== BEGIN FOOTER ========== -->
<footer>
<section class="icon-section">
<div id="icon-section-header" class="icon-section_header">Follow NCBI</div>
<div class="grid-container container">
<div class="icon-section_container">
<a class="footer-icon" id="footer_twitter" href="https://twitter.com/ncbi" aria-label="Twitter">
<svg width="40" height="40" viewBox="0 0 40 37" fill="none" xmlns="http://www.w3.org/2000/svg">
<title>Twitter</title>
<g id="twitterx1008">
<path id="path1008"
d="M6.06736 7L16.8778 20.8991L6.00001 32.2H10.2L18.6 23.1L25.668 32.2H34L22.8 17.5L31.9 7H28.4L20.7 15.4L14.401 7H6.06898H6.06736ZM9.66753 8.73423H12.9327L29.7327 30.4658H26.5697L9.66753 8.73423Z"
fill="#5B616B"/>
</g>
</svg>
</a>
<a class="footer-icon" id="footer_facebook" href="https://www.facebook.com/ncbi.nlm" aria-label="Facebook"><svg
data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 300 300">
<title>Facebook</title>
<path class="cls-11"
d="M210.5,115.12H171.74V97.82c0-8.14,5.39-10,9.19-10h27.14V52l-39.32-.12c-35.66,0-42.42,26.68-42.42,43.77v19.48H99.09v36.32h27.24v109h45.41v-109h35Z">
</path>
</svg></a>
<a class="footer-icon" id="footer_linkedin"
href="https://www.linkedin.com/company/ncbinlm"
aria-label="LinkedIn"><svg data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 300 300">
<title>LinkedIn</title>
<path class="cls-11"
d="M101.64,243.37H57.79v-114h43.85Zm-22-131.54h-.26c-13.25,0-21.82-10.36-21.82-21.76,0-11.65,8.84-21.15,22.33-21.15S101.7,78.72,102,90.38C102,101.77,93.4,111.83,79.63,111.83Zm100.93,52.61A17.54,17.54,0,0,0,163,182v61.39H119.18s.51-105.23,0-114H163v13a54.33,54.33,0,0,1,34.54-12.66c26,0,44.39,18.8,44.39,55.29v58.35H198.1V182A17.54,17.54,0,0,0,180.56,164.44Z">
</path>
</svg></a>
<a class="footer-icon" id="footer_github" href="https://github.com/ncbi" aria-label="GitHub"><svg
data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 300 300">
<defs>
<style>
.cls-11,
.cls-12 {
fill: #737373;
}
.cls-11 {
fill-rule: evenodd;
}
</style>
</defs>
<title>GitHub</title>
<path class="cls-11"
d="M151.36,47.28a105.76,105.76,0,0,0-33.43,206.1c5.28,1,7.22-2.3,7.22-5.09,0-2.52-.09-10.85-.14-19.69-29.42,6.4-35.63-12.48-35.63-12.48-4.81-12.22-11.74-15.47-11.74-15.47-9.59-6.56.73-6.43.73-6.43,10.61.75,16.21,10.9,16.21,10.9,9.43,16.17,24.73,11.49,30.77,8.79,1-6.83,3.69-11.5,6.71-14.14C108.57,197.1,83.88,188,83.88,147.51a40.92,40.92,0,0,1,10.9-28.39c-1.1-2.66-4.72-13.42,1-28,0,0,8.88-2.84,29.09,10.84a100.26,100.26,0,0,1,53,0C198,88.3,206.9,91.14,206.9,91.14c5.76,14.56,2.14,25.32,1,28a40.87,40.87,0,0,1,10.89,28.39c0,40.62-24.74,49.56-48.29,52.18,3.79,3.28,7.17,9.71,7.17,19.58,0,14.15-.12,25.54-.12,29,0,2.82,1.9,6.11,7.26,5.07A105.76,105.76,0,0,0,151.36,47.28Z">
</path>
<path class="cls-12"
d="M85.66,199.12c-.23.52-1.06.68-1.81.32s-1.2-1.06-.95-1.59,1.06-.69,1.82-.33,1.21,1.07.94,1.6Zm-1.3-1">
</path>
<path class="cls-12"
d="M90,203.89c-.51.47-1.49.25-2.16-.49a1.61,1.61,0,0,1-.31-2.19c.52-.47,1.47-.25,2.17.49s.82,1.72.3,2.19Zm-1-1.08">
</path>
<path class="cls-12"
d="M94.12,210c-.65.46-1.71,0-2.37-.91s-.64-2.07,0-2.52,1.7,0,2.36.89.65,2.08,0,2.54Zm0,0"></path>
<path class="cls-12"
d="M99.83,215.87c-.58.64-1.82.47-2.72-.41s-1.18-2.06-.6-2.7,1.83-.46,2.74.41,1.2,2.07.58,2.7Zm0,0">
</path>
<path class="cls-12"
d="M107.71,219.29c-.26.82-1.45,1.2-2.64.85s-2-1.34-1.74-2.17,1.44-1.23,2.65-.85,2,1.32,1.73,2.17Zm0,0">
</path>
<path class="cls-12"
d="M116.36,219.92c0,.87-1,1.59-2.24,1.61s-2.29-.68-2.3-1.54,1-1.59,2.26-1.61,2.28.67,2.28,1.54Zm0,0">
</path>
<path class="cls-12"
d="M124.42,218.55c.15.85-.73,1.72-2,1.95s-2.37-.3-2.52-1.14.73-1.75,2-2,2.37.29,2.53,1.16Zm0,0"></path>
</svg></a>
<a class="footer-icon" id="footer_blog" href="https://ncbiinsights.ncbi.nlm.nih.gov/" aria-label="Blog">
<svg id="Layer_1" data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 40 40"><defs><style>.cls-1{fill:#737373;}</style></defs><path class="cls-1" d="M14,30a4,4,0,1,1-4-4,4,4,0,0,1,4,4Zm11,3A19,19,0,0,0,7.05,15a1,1,0,0,0-1,1v3a1,1,0,0,0,.93,1A14,14,0,0,1,20,33.07,1,1,0,0,0,21,34h3a1,1,0,0,0,1-1Zm9,0A28,28,0,0,0,7,6,1,1,0,0,0,6,7v3a1,1,0,0,0,1,1A23,23,0,0,1,29,33a1,1,0,0,0,1,1h3A1,1,0,0,0,34,33Z"/></svg>
</a>
</div>
</div>
</section>
<section class="container-fluid bg-primary">
<div class="container pt-5">
<div class="row mt-3">
<div class="col-lg-3 col-12">
<p><a class="text-white" href="https://www.nlm.nih.gov/socialmedia/index.html">Connect with NLM</a></p>
<ul class="list-inline social_media">
<li class="list-inline-item"><a href="https://twitter.com/NLM_NIH" aria-label="Twitter"
target="_blank" rel="noopener noreferrer">
<svg width="35" height="35" viewBox="0 0 38 35" fill="none" xmlns="http://www.w3.org/2000/svg">
<title>Twitter</title>
<g id="twitterx1009" clip-path="url(#clip0_65276_3946)">
<path id="Vector" d="M17.5006 34.6565C26.9761 34.6565 34.6575 26.9751 34.6575 17.4996C34.6575 8.02416 26.9761 0.342773 17.5006 0.342773C8.02514 0.342773 0.34375 8.02416 0.34375 17.4996C0.34375 26.9751 8.02514 34.6565 17.5006 34.6565Z" fill="#205493" stroke="white" stroke-width="1.2" stroke-miterlimit="10"></path>
<path id="path1009" d="M8.54811 8.5L16.2698 18.4279L8.50001 26.5H11.5L17.5 20L22.5486 26.5H28.5L20.5 16L27 8.5H24.5L19 14.5L14.5007 8.5H8.54927H8.54811ZM11.1197 9.73873H13.4519L25.4519 25.2613H23.1926L11.1197 9.73873Z" fill="white"></path>
</g>
<defs>
<clipPath id="clip0_65276_3946">
<rect width="38" height="38" fill="white"></rect>
</clipPath>
</defs>
</svg></a>
</li>
<li class="list-inline-item"><a href="https://www.facebook.com/nationallibraryofmedicine"
aria-label="Facebook" rel="noopener noreferrer" target="_blank">
<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px"
y="0px" viewBox="0 0 249 249" style="enable-background:new 0 0 249 249;" xml:space="preserve">
<style type="text/css">
.st10 {
fill: #FFFFFF;
}
.st110 {
fill: none;
stroke: #FFFFFF;
stroke-width: 8;
stroke-miterlimit: 10;
}
</style>
<title>SM-Facebook</title>
<g>
<g>
<path class="st10" d="M159,99.1h-24V88.4c0-5,3.3-6.2,5.7-6.2h16.8V60l-24.4-0.1c-22.1,0-26.2,16.5-26.2,27.1v12.1H90v22.5h16.9
v67.5H135v-67.5h21.7L159,99.1z"></path>
</g>
</g>
<circle class="st110" cx="123.6" cy="123.2" r="108.2"></circle>
</svg>
</a></li>
<li class="list-inline-item"><a href="https://www.youtube.com/user/NLMNIH" aria-label="Youtube"
target="_blank" rel="noopener noreferrer"><svg version="1.1" xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 249 249"
style="enable-background:new 0 0 249 249;" xml:space="preserve">
<title>SM-Youtube</title>
<style type="text/css">
.st4 {
fill: none;
stroke: #FFFFFF;
stroke-width: 8;
stroke-miterlimit: 10;
}
.st5 {
fill: #FFFFFF;
}
</style>
<circle class="st4" cx="124.2" cy="123.4" r="108.2"></circle>
<g transform="translate(0,-952.36218)">
<path class="st5"
d="M88.4,1037.4c-10.4,0-18.7,8.3-18.7,18.7v40.1c0,10.4,8.3,18.7,18.7,18.7h72.1c10.4,0,18.7-8.3,18.7-18.7
v-40.1c0-10.4-8.3-18.7-18.7-18.7H88.4z M115.2,1058.8l29.4,17.4l-29.4,17.4V1058.8z"></path>
</g>
</svg></a></li>
</ul>
</div>
<div class="col-lg-3 col-12">
<p class="address_footer text-white">National Library of Medicine<br>
<a href="https://www.google.com/maps/place/8600+Rockville+Pike,+Bethesda,+MD+20894/@38.9959508,-77.101021,17z/data=!3m1!4b1!4m5!3m4!1s0x89b7c95e25765ddb:0x19156f88b27635b8!8m2!3d38.9959508!4d-77.0988323"
class="text-white" target="_blank" rel="noopener noreferrer">8600 Rockville Pike<br>
Bethesda, MD 20894</a></p>
</div>
<div class="col-lg-3 col-12 centered-lg">
<p><a href="https://www.nlm.nih.gov/web_policies.html" class="text-white">Web Policies</a><br>
<a href="https://www.nih.gov/institutes-nih/nih-office-director/office-communications-public-liaison/freedom-information-act-office"
class="text-white">FOIA</a><br>
<a href="https://www.hhs.gov/vulnerability-disclosure-policy/index.html" class="text-white" id="vdp">HHS Vulnerability Disclosure</a></p>
</div>
<div class="col-lg-3 col-12 centered-lg">
<p><a class="supportLink text-white" href="https://support.nlm.nih.gov/">Help</a><br>
<a href="https://www.nlm.nih.gov/accessibility.html" class="text-white">Accessibility</a><br>
<a href="https://www.nlm.nih.gov/careers/careers.html" class="text-white">Careers</a></p>
</div>
</div>
<div class="row">
<div class="col-lg-12 centered-lg">
<nav class="bottom-links">
<ul class="mt-3">
<li>
<a class="text-white" href="//www.nlm.nih.gov/">NLM</a>
</li>
<li>
<a class="text-white"
href="https://www.nih.gov/">NIH</a>
</li>
<li>
<a class="text-white" href="https://www.hhs.gov/">HHS</a>
</li>
<li>
<a
class="text-white" href="https://www.usa.gov/">USA.gov</a>
</li>
</ul>
</nav>
</div>
</div>
</div>
</section>
</footer>
<!-- ========== END FOOTER ========== -->
<!-- javascript to inject NWDS meta tags. Note: value of nwds_version is updated by "npm version" command -->
<script type="text/javascript">
var nwds_version = "1.2.3";
var meta_nwds_ver = document.createElement('meta');
meta_nwds_ver.name = 'ncbi_nwds_ver';
meta_nwds_ver.content = nwds_version;
document.getElementsByTagName('head')[0].appendChild(meta_nwds_ver);
var meta_nwds = document.createElement('meta');
meta_nwds.name = 'ncbi_nwds';
meta_nwds.content = 'yes';
document.getElementsByTagName('head')[0].appendChild(meta_nwds);
var alertsUrl = "/core/alerts/alerts.js";
if (typeof ncbiBaseUrl !== 'undefined') {
alertsUrl = ncbiBaseUrl + alertsUrl;
}
</script>
</div>
<!-- jQuery with plugins -->
<script src="https://cdn.ncbi.nlm.nih.gov/pubmed/277eb475-38df-4990-a0ee-0080b04e86fc/CACHE/js/output.293fbf76aa18.js"></script>
<!-- Project base scripts -->
<script src="https://cdn.ncbi.nlm.nih.gov/pubmed/277eb475-38df-4990-a0ee-0080b04e86fc/CACHE/js/output.550e9c8906a2.js"></script>
<script>
ncbi.awesome.basePage.init({
userInfo: {
isLoggedIn: false,
username: "",
loginUrl: "https://account.ncbi.nlm.nih.gov/?back_url=https%3A%2F%2Fpubmed.ncbi.nlm.nih.gov%2F28520343%2F",
logoutUrl: "https://www.ncbi.nlm.nih.gov/account/signout/?back_url=https%3A//pubmed.ncbi.nlm.nih.gov/28520343/"
},
baseUrl: 'https://www.ncbi.nlm.nih.gov',
noSessionCookieName: "pm-ns",
searchIdCookieName: "pm-sid",
adjNavSearchIdCookieName: "pm-adjnav-sid",
searchFormSubmittedCookieName: "pm-sfs",
isOnSearchPageCookieName: "pm-iosp",
backToSearchCookieName: "pm-btsl",
clinicalSeeAllCookieName: "pm-csa",
jsCookieDomain: "pubmed.ncbi.nlm.nih.gov",
userShareRequestFailed: "",
noSharedSettings: "myncbi_no_shared_settings",
noSharedAccount: "myncbi_no_shared_account"
});
</script>
<script type="module">
import dismissableNCBIAlert from "https://cdn.ncbi.nlm.nih.gov/pubmed/277eb475-38df-4990-a0ee-0080b04e86fc/core/dismissable-ncbi-alert.js";
jQuery.getScript("https://www.ncbi.nlm.nih.gov/core/alerts/alerts.js", function () {
galert(['body > *:last-child']);
dismissableNCBIAlert();
}).fail(function() {
});
</script>
<script defer type="text/javascript" src="https://cdn.ncbi.nlm.nih.gov/core/pinger/pinger.js"> </script>
<script src="https://cdn.ncbi.nlm.nih.gov/pubmed/277eb475-38df-4990-a0ee-0080b04e86fc/CACHE/js/output.e3950ac8c6da.js"></script>
<script>
ncbi.awesome.articlePage.init({
baseSuggestionsUrl: "/suggestions/",
mathJaxUrl: "https://cdn.ncbi.nlm.nih.gov/pubmed/277eb475-38df-4990-a0ee-0080b04e86fc/mathjax/unpacked/MathJax.js?config=MML_CHTML",
clipboardAPIRoot: "/ajax/clipboard/",
clipboardNextPageUrl: "/clipboard-next-page/",
searchIdCookieName: "pm-sid",
searchFormSubmittedCookieName: "pm-sfs",
backToSearchCookieName: "pm-btsl",
jsCookieDomain: "pubmed.ncbi.nlm.nih.gov",
longTermPrefix: "longquery",
adjNavURLPath: "/28520343/adj-nav/",
adjNavSearchIdCookieName: "pm-adjnav-sid",
articlePageUrl: "/28520343/",
markJSUrl: "https://cdn.ncbi.nlm.nih.gov/pubmed/277eb475-38df-4990-a0ee-0080b04e86fc/mark.js/dist/jquery.mark.js",
termHighlightColor: "",
highlightedTokens: "",
citeFormatPreferenceCookieName: "pm-cf"
});
</script>
</body>
</html>