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<meta name="keywords" content="C0008533, bs, hemophilia, christmas disease, congenital f9 deficiency, congenital factor ix deficiency, congenital factor ix disorder, deficiencies, f9, deficiencies, factor ix, deficiency, f9, deficiency, factor ix, deficiency, functional factor ix, disease or syndrome, disease, christmas, f9, f9 deficiencies, f9 deficiency, factor 9 deficiency, factor ix deficiencies, factor ix deficiency, haemophilia b, haemophilia b leyden, haemophilia b(m), haemophilia b, x-linked recessive, haemophilia bs, haemophilia type b, hem b, hemb, hemophilia b, hemophilia b leyden, hemophilia b(m), hemophilia b, x-linked recessive, hemophilia bs, hemophilia bs (m), hemophilia type b, hereditary factor ix deficiency, hereditary factor ix deficiency disease, plasma thromboplastin component deficiency, ptc deficiency disease, sex-linked factor ix deficiency disease, autosomal dominant, autosomal recessive, birth defects, chromosomal disease, chromosome, clinical features, clinical findings, clinical genetics, clinical recommendations, clinvar, congenital chromosomal disease, consumer genetic resources, cytogenetic location, disease characteristics, disease definitions, disease descriptions, disease ontology, disease synonyms, disease vocabulary, dysmorphology, entrez, familial disease, gene, gene-disease relationship, genereviews, genetic disease, genetic disorder, genetic terminology, genetic testing registry, genetics home reference, genomic disease, gtr, hereditary disease, heritable disease, hpo, human phenotype ontology, inherited disease, management guidelines, maternal inheritance, medgen, medical genetics, medical subject headings, mesh, mitochondrial inheritance, mode of inheritance, national center for biotechnology information, national institutes of health, national library of medicine, ncbi, nih, nlm, omim, ordo, orphanet, paternal inheritance, phenome, position statements, professional practice guidelines, rare disease, reference sequence, refseq, snomed ct, syndrome, undiagnosed diseases, x-linked recessive" /><meta name="description" content="Hemophilia B is characterized by deficiency in factor IX clotting activity that results in prolonged oozing after injuries, tooth extractions, or surgery, and delayed or recurrent bleeding prior to complete wound healing. The age of diagnosis and frequency of bleeding episodes are related to the level of factor IX clotting activity. In any individual with hemophilia B, bleeding episodes may be more frequent in childhood and adolescence than in adulthood. Individuals with severe hemophilia B are usually diagnosed during the first two years of life. Without prophylactic treatment, they may average up to two to five spontaneous bleeding episodes each month, including spontaneous joint or muscle bleeds, and prolonged bleeding or excessive pain and swelling from minor injuries, surgery, and tooth extractions. Individuals with moderate hemophilia B seldom have spontaneous bleeding, although it varies between individuals; however, they do have prolonged or delayed oozing after relatively minor trauma and are usually diagnosed before age five to six years. The frequency of bleeding episodes varies from once a month to once a year. Individuals with mild hemophilia B do not have spontaneous bleeding episodes; however, without pre- and postoperative treatment, abnormal bleeding occurs with surgery or tooth extractions. The frequency of bleeding may vary from once a year to once every ten years. Individuals with mild hemophilia B are often not diagnosed until later in life. Approximately 30% of heterozygous females have factor IX clotting activity lower than 40% and are at risk for bleeding (even if the affected family member has mild hemophilia B). As in males, bleeding severity generally correlates with factor levels. After major trauma or invasive procedures, prolonged or excessive bleeding usually occurs, regardless of severity." /><meta name="robots" content="index,nofollow,noarchive" />
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<title>Hereditary factor IX deficiency disease (Concept Id: C0008533)
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<!--
UID=945
ConceptID=C0008533
-->
<!--imgCountBooks = 0--><h1 class="medgenTitle"><div class="MedGenTitleText">Hereditary factor IX deficiency disease<span class="h1sub">(HEMB)</span></div></h1><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>945</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information."><span class="highlight" style="background-color:">C0008533</span></a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div><table class="medgenTable"><tbody><tr><td>Synonyms:</td>
<td>Christmas Disease; F9 DEFICIENCY; FACTOR IX DEFICIENCY; HEM B; HEMB; Hemophilia B; PLASMA THROMBOPLASTIN COMPONENT DEFICIENCY</td></tr>
<tr><td><span class="bold">SNOMED CT: </span></td>
<td>Factor IX deficiency (767712006); Congenital factor IX deficiency (41788008); Hemophilia B (41788008); Hereditary factor IX deficiency disease (41788008); Christmas disease (41788008); Sex-linked factor IX deficiency disease (41788008); PTC deficiency disease (41788008)</td></tr>
<tr><td>Modes of inheritance:</td>
<td>
<div class="divPopper rprt" id="moi_375779"><div><strong>X-linked recessive inheritance</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>375779</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845977</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Source: Orphanet</div>
<div class="spaceAbove">A mode of inheritance that is observed for recessive traits related to a gene encoded on the X chromosome. In the context of medical genetics, X-linked recessive disorders manifest in males (who have one copy of the X chromosome and are thus hemizygotes), but generally not in female heterozygotes who have one mutant and one normal allele.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/375779">This record</a></div></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#moi_375779" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked recessive inheritance</a><span> (Orphanet)</span></div></td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td><a class="help jig-ncbi-popper" data-jig="ncbipopper" href="#target-gene-loc">Gene (location):<img class="pulldown" src="//static.pubmed.gov/portal/portal3rc.fcgi/4223267/img/4204968" /></a><div class="display-none" id="target-gene-loc">
Gene(s) directly associated with<br />
this condition or phenotype.</div></td>
<td><a target="_blank" title="F9 - ID: 2158 - NCBI Gene" href="/gene/2158" class="medgenPMinfo">F9</a> (Xq27.1)</td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td>Monarch Initiative:</td>
<td><a href="https://monarchinitiative.org/disease/MONDO:0010604" target="_blank">MONDO:0010604</a></td></tr>
<tr><td>OMIM<span class="superscript">®</span>:</td>
<td><a href="https://omim.org/entry/306900" target="_blank">306900</a></td></tr>
<tr><td>Orphanet:</td>
<td><a target="_blank" title="Orphanet: The portal for rare diseases and orphan drugs" href="http://www.orpha.net/consor/cgi-bin/OC_Exp.php?lng=EN&amp;Expert=98879">ORPHA98879</a></td></tr></tbody></table></div><div class="rprt-body jig-ncbiinpagenav" data-jigconfig="smoothScroll: false, gotoTopLink: true, gotoTopLinkText: '', gotoTopLinkAttrs: {'title': 'Go to the top of the page'},allHeadingLevels: ['h1'], topOfPageTOC: true, tocId: 'my-toc'"><div id="rprt-tabs-1" class="rprt-tab"><div id="tb-termsProp-1"><div class="leftCol mgCol"><div>
<div class="portlet mgSection" id="ID_101">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Disease_characteristics">Disease characteristics</h1><a sid="101" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><div class="excerpt">Excerpted from the <i>GeneReview: </i><a href="/books/NBK1495" target="_blank">Hemophilia B</a></div><div>Hemophilia B is characterized by deficiency in factor IX clotting activity that results in prolonged oozing after injuries, tooth extractions, or surgery, and delayed or recurrent bleeding prior to complete wound healing. The age of diagnosis and frequency of bleeding episodes are related to the level of factor IX clotting activity. In any individual with hemophilia B, bleeding episodes may be more frequent in childhood and adolescence than in adulthood. Individuals with severe hemophilia B are usually diagnosed during the first two years of life. Without prophylactic treatment, they may average up to two to five spontaneous bleeding episodes each month, including spontaneous joint or muscle bleeds, and prolonged bleeding or excessive pain and swelling from minor injuries, surgery, and tooth extractions. Individuals with moderate hemophilia B seldom have spontaneous bleeding, although it varies between individuals; however, they do have prolonged or delayed oozing after relatively minor trauma and are usually diagnosed before age five to six years. The frequency of bleeding episodes varies from once a month to once a year. Individuals with mild hemophilia B do not have spontaneous bleeding episodes; however, without pre- and postoperative treatment, abnormal bleeding occurs with surgery or tooth extractions. The frequency of bleeding may vary from once a year to once every ten years. Individuals with mild hemophilia B are often not diagnosed until later in life. Approximately 30% of heterozygous females have factor IX clotting activity lower than 40% and are at risk for bleeding (even if the affected family member has mild hemophilia B). As in males, bleeding severity generally correlates with factor levels. After major trauma or invasive procedures, prolonged or excessive bleeding usually occurs, regardless of severity. [from <a title="GeneReviews" href="https://www.ncbi.nlm.nih.gov/books/NBK1116" class="defSource" target="_blank">GeneReviews</a>]</div><div class="spaceAbove"><strong>Full text of <i>GeneReview</i> (by section):</strong><br /><a class="medgenPMinfo" href="/books/NBK1495#hemo-b.Summary" target="NBK1495">Summary</a>  |  <a class="medgenPMinfo" href="/books/NBK1495#hemo-b.Diagnosis" target="NBK1495">Diagnosis</a>  |  <a class="medgenPMinfo" href="/books/NBK1495#hemo-b.Clinical_Characteristics" target="NBK1495">Clinical Characteristics</a>  |  <a class="medgenPMinfo" href="/books/NBK1495#hemo-b.Genetically_Related_Allelic_Disor" target="NBK1495">Genetically Related (Allelic) Disorders</a>  |  <a class="medgenPMinfo" href="/books/NBK1495#hemo-b.Differential_Diagnosis" target="NBK1495">Differential Diagnosis</a>  |  <a class="medgenPMinfo" href="/books/NBK1495#hemo-b.Management" target="NBK1495">Management</a>  |  <a class="medgenPMinfo" href="/books/NBK1495#hemo-b.Genetic_Counseling" target="NBK1495">Genetic Counseling</a>  |  <a class="medgenPMinfo" href="/books/NBK1495#hemo-b.Resources" target="NBK1495">Resources</a>  |  <a class="medgenPMinfo" href="/books/NBK1495#hemo-b.Molecular_Genetics" target="NBK1495">Molecular Genetics</a>  |  <a class="medgenPMinfo" href="/books/NBK1495#hemo-b.Chapter_Notes" target="NBK1495">Chapter Notes</a>  |  <a class="medgenPMinfo" href="/books/NBK1495#hemo-b.References" target="NBK1495">References</a></div><div class="spaceAbove"><strong>Authors:</strong><br />
Barbara A Konkle  |  Shelley Nakaya Fletcher   <a href="/books/NBK1495" target="NBK1495" title="NCBI Bookshelf: Hemophilia B">view full author information</a></div></div>
</div>
<div class="portlet mgSection" id="ID_117">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Additional_descriptions">Additional descriptions</h1><a sid="117" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><div class="mgSection"><strong>From OMIM</strong><br />Hemophilia B (HEMB), which results from factor IX deficiency, is phenotypically indistinguishable from hemophilia A (306700), which results from coagulation factor VIII (F8; 300841) deficiency. The classic laboratory findings in hemophilia B include a prolonged activated partial thromboplastin time (aPTT) and a normal prothrombin time (PT) (Lefkowitz et al., 1993).&#13;
Early studies made a distinction between cross-reactive-material (CRM)-negative and CRM-positive hemophilia B mutants. This classification referred to detection of the F9 antigen in plasma, even in the presence of decreased F9 activity. Detection of the antigen indicated the presence of a dysfunctional F9 protein. Roberts et al. (1968) found that about 90% of patients with hemophilia B were CRM-negative, whereas about 10% were CRM-positive. However, Bertina and Veltkamp (1978) found that a rather large proportion of the hemophilia B patients could be characterized as hemophilia B CRM+. They identified 14 cases of hemophilia B CRM+ from 11 families among a group of 33 patients. After immunologic and activity comparisons, they found at least 7 different factor IX variants. Bertina and Veltkamp (1978) noted the high heterogeneity within this group. In an editorial on variants of vitamin K-dependent coagulation factors, Bertina et al. (1979) stated that 9 defective variants of factor II, 5 variants of factor X, and many variants (about 180 pedigrees) of factor IX had been identified. At least one variant of factor VII (Padua) was also known.  <a target="_blank" href="http://www.omim.org/entry/306900">http://www.omim.org/entry/306900</a></div><div class="mgSection"><strong>From MedlinePlus Genetics</strong><br />Hemophilia is a bleeding disorder that slows the blood clotting process. People with this condition experience prolonged bleeding or oozing following an injury, surgery, or having a tooth pulled. In severe cases of hemophilia, continuous bleeding occurs after minor trauma or even when there is no obvious injury (sometimes called spontaneous bleeding). Serious complications can result from bleeding into the joints, muscles, brain, or other internal organs. Milder forms of hemophilia do not necessarily involve spontaneous bleeding, and the condition may not become apparent until abnormal bleeding occurs following surgery or a serious injury.<br /><br />The major types of this condition are hemophilia A (also known as classic hemophilia or factor VIII deficiency) and hemophilia B (also known as Christmas disease or factor IX deficiency). Although the two types have very similar signs and symptoms, they are caused by variants (also known as mutations) in different genes. People with an unusual form of hemophilia B, known as hemophilia B Leyden, experience episodes of excessive bleeding in childhood but have few bleeding problems after puberty.  <a target="_blank" href="https://medlineplus.gov/genetics/condition/hemophilia">https://medlineplus.gov/genetics/condition/hemophilia</a></div></div>
</div>
<div class="portlet mgSection" id="ID_102">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Clinical_features">Clinical features</h1><a sid="102" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln clinfeat"><strong>From HPO</strong><br />
<div class="divPopper rprt" id="clin_5488"><div><strong>Hematuria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>5488</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0018965</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The presence of blood in the urine. Hematuria may be gross hematuria (visible to the naked eye) or microscopic hematuria (detected by dipstick or microscopic examination of the urine).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/5488">Feature record</a> | <a href="/medgen?term=%22Hematuria%22%5BClinical%20Features%5D%20OR%205488%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_5479"><div><strong>Joint hemorrhage</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>5479</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0018924</a></dd><dt><span class="dotprefix"></span></dt><dd>Pathologic Function</dd></dl></div></div></div>
<div class="spaceAbove">Hemorrhage occurring within a joint.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/5479">Feature record</a> | <a href="/medgen?term=%22Joint%20hemorrhage%22%5BClinical%20Features%5D%20OR%205479%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_8971"><div><strong>Gastrointestinal hemorrhage</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>8971</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0017181</a></dd><dt><span class="dotprefix"></span></dt><dd>Pathologic Function</dd></dl></div></div></div>
<div class="spaceAbove">Hemorrhage affecting the gastrointestinal tract.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/8971">Feature record</a> | <a href="/medgen?term=%22Gastrointestinal%20hemorrhage%22%5BClinical%20Features%5D%20OR%208971%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_6770"><div><strong>Hematemesis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>6770</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0018926</a></dd><dt><span class="dotprefix"></span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
<div class="spaceAbove">The vomiting of blood.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/6770">Feature record</a> | <a href="/medgen?term=%22Hematemesis%22%5BClinical%20Features%5D%20OR%206770%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_7523"><div><strong>Melena</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>7523</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0025222</a></dd><dt><span class="dotprefix"></span></dt><dd>Pathologic Function</dd></dl></div></div></div>
<div class="spaceAbove">The passage of blackish, tarry feces associated with gastrointestinal hemorrhage. Melena occurs if the blood remains in the colon long enough for it to be broken down by colonic bacteria. One degradation product, hematin, imbues the stool with a blackish color. Thus, melena generally occurs with bleeding from the upper gastrointestinal tract (e.g., stomach ulcers or duodenal ulcers), since the blood usually remains in the gut for a longer period of time than with lower gastrointestinal bleeding.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/7523">Feature record</a> | <a href="/medgen?term=%22Melena%22%5BClinical%20Features%5D%20OR%207523%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_4996"><div><strong>Epistaxis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>4996</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0014591</a></dd><dt><span class="dotprefix"></span></dt><dd>Pathologic Function</dd></dl></div></div></div>
<div class="spaceAbove">Epistaxis, or nosebleed, refers to a hemorrhage localized in the nose.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/4996">Feature record</a> | <a href="/medgen?term=%22Epistaxis%22%5BClinical%20Features%5D%20OR%204996%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_488780"><div><strong>Prolonged whole-blood clotting time</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>488780</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0151563</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">An abnormal prolongation (delay) in the time required by whole blood to produce a visible clot.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/488780">Feature record</a> | <a href="/medgen?term=%22Prolonged%20whole-blood%20clotting%20time%22%5BClinical%20Features%5D%20OR%20488780%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_66815"><div><strong>Prolonged partial thromboplastin time</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>66815</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0240671</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Increased time to coagulation in the partial thromboplastin time (PTT) test, a measure of the intrinsic and common coagulation pathways. Phospholipid, and activator, and calcium are mixed into an anticoagulated plasma sample, and the time is measured until a thrombus forms.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/66815">Feature record</a> | <a href="/medgen?term=%22Prolonged%20partial%20thromboplastin%20time%22%5BClinical%20Features%5D%20OR%2066815%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_208879"><div><strong>Prolonged prothrombin time</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>208879</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0853225</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Increased time to coagulation in the prothrombin time test, which is a measure of the extrinsic pathway of coagulation. The results of the prothrombin time test are often expressed in terms of the International normalized ratio (INR), which is calculated as a ratio of the patient's prothrombin time (PT) to a control PT standardized for the potency of the thromboplastin reagent developed by the World Health Organization (WHO) using the formula</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/208879">Feature record</a> | <a href="/medgen?term=%22Prolonged%20prothrombin%20time%22%5BClinical%20Features%5D%20OR%20208879%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_375403"><div><strong>Persistent bleeding after trauma</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>375403</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1844374</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/375403">Feature record</a> | <a href="/medgen?term=%22Persistent%20bleeding%20after%20trauma%22%5BClinical%20Features%5D%20OR%20375403%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_868754"><div><strong>Reduced factor IX activity</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>868754</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4023159</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Decreased activity of coagulation factor IX. Factor IX, which itself is activated by factor Xa or factor VIIa to form factor IXa, activates factor X into factor Xa.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/868754">Feature record</a> | <a href="/medgen?term=%22Reduced%20factor%20IX%20activity%22%5BClinical%20Features%5D%20OR%20868754%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_45244"><div><strong>Osteoarthritis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>45244</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0029408</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Osteoarthritis (OA) is a degenerative disease of the joints characterized by degradation of the hyaline articular cartilage and remodeling of the subchondral bone with sclerosis (Meulenbelt et al., 2006). Clinical problems include pain and joint stiffness often leading to significant disability and joint replacement. Osteoarthritis exhibits a clear predilection for specific joints; it appears most commonly in the hip and knee joints and lumbar and cervical spine, as well as in the distal interphalangeal and the first carpometacarpal (base of thumb) and proximal interphalangeal joints of the hand; however, patients with osteoarthritis may have 1, a few, or all of these sites affected (Stefansson et al., 2003). According to a conservative estimate, greater than 70% of the population of the United States at age 65 years is affected by the disease, reflecting its age dependence.&#13; Genetic Heterogeneity of Susceptibility to Osteoarthritis&#13; Susceptibility to osteoarthritis has been associated with variation in other genes: OS2 (140600) with variation in the MATN3 gene (602109) on chromosome 2p24; OS3 (607850) with variation in the ASPN gene (608135) on chromosome 9q22; and OS5 (612400) with variation in the GDF5 gene (601146) on chromosome 20q11.&#13; Other susceptibility loci for osteoarthritis have been mapped to chromosomes 2q33 (OS4; 610839) and 3p24 (OS6; 612401).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/45244">Feature record</a> | <a href="/medgen?term=%22Osteoarthritis%22%5BClinical%20Features%5D%20OR%2045244%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_10680"><div><strong>Petechiae</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>10680</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0031256</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Petechiae are pinpoint-sized reddish/purple spots, resembling a rash, that appear just under the skin or a mucous membrane when capillaries have ruptured and some superficial bleeding into the skin has happened. This term refers to an abnormally increased susceptibility to developing petechiae.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/10680">Feature record</a> | <a href="/medgen?term=%22Petechiae%22%5BClinical%20Features%5D%20OR%2010680%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_140849"><div><strong>Bruising susceptibility</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>140849</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0423798</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">An ecchymosis (bruise) refers to the skin discoloration caused by the escape of blood into the tissues from ruptured blood vessels. This term refers to an abnormally increased susceptibility to bruising. The corresponding phenotypic abnormality is generally elicited on medical history as a report of frequent ecchymoses or bruising without adequate trauma.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/140849">Feature record</a> | <a href="/medgen?term=%22Bruising%20susceptibility%22%5BClinical%20Features%5D%20OR%20140849%5Buid%5D">Search on this feature</a></div></div><div class="TreeLite" data-jigconfig="closed: 1"><div class="concept-def"><a class="small" href="#" onclick="jQuery(&quot;.TreeLite&quot;,&quot;#ID_102&quot;).TreeLite().openAll(); return false;">Show all</a><a class="small" href="#" onclick="jQuery(&quot;.TreeLite&quot;,&quot;#ID_102&quot;).TreeLite().closeAll(); return false;">Hide all</a></div><ul><li><span class="TLline">Abnormality of blood and blood-forming tissues</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_4996" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Epistaxis</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_375403" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Persistent bleeding after trauma</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_66815" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Prolonged partial thromboplastin time</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_208879" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Prolonged prothrombin time</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_488780" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Prolonged whole-blood clotting time</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_868754" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Reduced factor IX activity</a></span></li></ul></li><li><span class="TLline">Abnormality of the cardiovascular system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_5479" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Joint hemorrhage</a></span></li></ul></li><li><span class="TLline">Abnormality of the digestive system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_8971" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Gastrointestinal hemorrhage</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_6770" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hematemesis</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_7523" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Melena</a></span></li></ul></li><li><span class="TLline">Abnormality of the genitourinary system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_5488" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hematuria</a></span></li></ul></li><li><span class="TLline">Abnormality of the integument</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_140849" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bruising susceptibility</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_10680" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Petechiae</a></span></li></ul></li><li><span class="TLline">Abnormality of the musculoskeletal system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_45244" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Osteoarthritis</a></span></li></ul></li></ul></div></div>
</div>
<div class="portlet mgSection" id="ID_118">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Term_Hierarchy">Term Hierarchy</h1><a sid="118" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln HierarchyGTR"><div class="jig-ncbitabs"><ul><li><a href="#tabGTR">GTR</a></li><li><a href="#tabMGEN">MeSH</a></li><li><a href="#tabORDO">Orphanet</a></li></ul><div id="tabGTR"><div class="search_result"><div class="rprts"><div class="chiclet_legend"><span class="chiclet_list" style="position:static;"><span title="Clinical test" class="chiclet Ccolor round">C</span><span>Clinical test,  </span><span title="Research test" class="chiclet Rcolor round">R</span><span>Research test,  </span><span title="OMIM" class="chiclet Ocolor ">O</span><span>OMIM,  </span><span title="GeneReview" class="chiclet Gcolor">G</span><span><em>GeneReviews</em>,  </span><span title="ClinVar" class="chiclet Vcolor">V</span><span>ClinVar  </span></span></div><div id="hierarchy" class="margin_t1"><div class="ds_tree"><ul><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C0684275[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=146334">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet unavailable" title="OMIM">O</span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=146334" ref="ncbi_uid=146334">V</a></span></span><span class="TLline"><a href="/medgen/146334" ref="tree=GTR&amp;ncbi_uid=146334&amp;link_uid=146334" title="View MedGen record for 'Hemophilia'">Hemophilia</a></span><ul><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C0272325[DISCUI]&amp;test_type=Clinical&amp;redirect=true" ref="ncbi_uid=124426">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet unavailable" title="OMIM">O</span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet unavailable" title="ClinVar">V</span></span><span class="TLline"><a href="/medgen/124426" ref="tree=GTR&amp;ncbi_uid=124426&amp;link_uid=124426" title="View MedGen record for 'Acquired factor VIII deficiency disease'">Acquired factor VIII deficiency disease</a></span></li><li class="matched_ds"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C0008533[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=945">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=945" target="_blank" href="/omim/306900">O</a></span><span class="chiclet Gcolor" title="GeneReviews"><a target="_blank" href="/books/NBK1495/" ref="ncbi_uid=945">G</a></span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=945" ref="ncbi_uid=945">V</a></span></span><span class="TLline">Hereditary factor IX deficiency disease</span><ul><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C4016497[DISCUI]&amp;test_type=Clinical&amp;redirect=true" ref="ncbi_uid=864934">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=864934" target="_blank" href="/omim/300746">O</a></span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=864934" ref="ncbi_uid=864934">V</a></span></span><span class="TLline"><a href="/medgen/864934" ref="tree=GTR&amp;ncbi_uid=864934&amp;link_uid=864934" title="View MedGen record for 'HEMOPHILIA B BRANDENBURG'">HEMOPHILIA B BRANDENBURG</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C5848256[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=1845499">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=1845499" target="_blank" href="/omim/300746">O</a></span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=1845499" ref="ncbi_uid=1845499">V</a></span></span><span class="TLline"><a href="/medgen/1845499" ref="tree=GTR&amp;ncbi_uid=1845499&amp;link_uid=1845499" title="View MedGen record for 'Hemophilia B leyden'">Hemophilia B leyden</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=CN043453[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=431584">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet unavailable" title="OMIM">O</span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=431584" ref="ncbi_uid=431584">V</a></span></span><span class="TLline"><a href="/medgen/431584" ref="tree=GTR&amp;ncbi_uid=431584&amp;link_uid=431584" title="View MedGen record for 'Hemophilia b(m)'">Hemophilia b(m)</a></span></li></ul></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C0019069[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=5501">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=5501" target="_blank" href="/omim/300841">O</a></span><span class="chiclet Gcolor" title="GeneReviews"><a target="_blank" href="/books/NBK1404/" ref="ncbi_uid=5501">G</a></span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=5501" ref="ncbi_uid=5501">V</a></span></span><span class="TLline"><a href="/medgen/5501" ref="tree=GTR&amp;ncbi_uid=5501&amp;link_uid=5501" title="View MedGen record for 'Hereditary factor VIII deficiency disease'">Hereditary factor VIII deficiency disease</a></span><ul><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C1844137[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=336105">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=336105" target="_blank" href="/omim/306800">O</a></span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet unavailable" title="ClinVar">V</span></span><span class="TLline"><a href="/medgen/336105" ref="tree=GTR&amp;ncbi_uid=336105&amp;link_uid=336105" title="View MedGen record for 'Hemophilia A with vascular abnormality'">Hemophilia A with vascular abnormality</a></span></li></ul></li></ul></li></ul></div></div></div></div></div><div id="tabMGEN"><div class="ds_tree"><ul><li><span class="TLline"><a href="/medgen/867443" ref="tree=MeSH" title="MedGen record for Phenotypic abnormality">Phenotypic abnormality</a></span><ul><li><span class="TLline"><a href="/medgen/163092" ref="tree=MeSH" title="MedGen record for Abnormality of blood and blood-forming tissues">Abnormality of blood and blood-forming tissues</a></span><ul><li><span class="TLline"><a href="/medgen/375979" ref="tree=MeSH" title="MedGen record for Abnormality of coagulation">Abnormality of coagulation</a></span><ul><li><span class="TLline"><a href="/medgen/604" ref="tree=MeSH" title="MedGen record for Abnormality of the coagulation cascade">Abnormality of the coagulation cascade</a></span><ul><li><span class="TLline"><a href="/medgen/108723" ref="tree=MeSH" title="MedGen record for Coagulation protein disease">Coagulation protein disease</a></span><ul><li><span class="matched_ds">Hereditary factor IX deficiency disease</span><ul><li><span class="TLline"><a href="/medgen/864934" ref="tree=MeSH" title="MedGen record for HEMOPHILIA B BRANDENBURG">HEMOPHILIA B BRANDENBURG</a></span></li><li><span class="TLline"><a href="/medgen/1845499" ref="tree=MeSH" title="MedGen record for Hemophilia B leyden">Hemophilia B leyden</a></span></li><li><span class="TLline"><a href="/medgen/431584" ref="tree=MeSH" title="MedGen record for Hemophilia b(m)">Hemophilia b(m)</a></span></li><li><span class="TLline"><a href="/medgen/1826003" ref="tree=MeSH" title="MedGen record for Mild hemophilia B">Mild hemophilia B</a></span></li><li><span class="TLline"><a href="/medgen/1842225" ref="tree=MeSH" title="MedGen record for Moderately severe hemophilia B">Moderately severe hemophilia B</a></span></li><li><span class="TLline"><a href="/medgen/1826004" ref="tree=MeSH" title="MedGen record for Severe hemophilia B">Severe hemophilia B</a></span></li><li><span class="TLline"><a href="/medgen/1843014" ref="tree=MeSH" title="MedGen record for Symptomatic form of hemophilia B in female carriers">Symptomatic form of hemophilia B in female carriers</a></span></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></div></div><div id="tabORDO">Follow <a target="_blank" href="http://www.orpha.net/consor/cgi-bin/Disease_Classif.php?lng=EN&amp;data_id=156&amp;PatId=13896&amp;search=Disease_Classif_Simple&amp;new=1" class="ital bold">this link</a> to review classifications for <span class="ital">Hereditary factor IX deficiency disease</span> in Orphanet.</div></div></div>
</div>
<div class="portlet mgSection" id="ID_105">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Professional_guidelines">Professional guidelines</h1><a sid="105" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><h3 class="subhead">PubMed<a class="help jig-ncbi-popper" data-jig="ncbipopper" href="#guidelinesHelpPM"><img class="pulldown" src="//static.pubmed.gov/portal/portal3rc.fcgi/4223267/img/4204968" /></a></h3>
<div class="nl"><a target="_blank" href="/pubmed/38908829">ISTH clinical practice guideline for treatment of congenital hemophilia A and B based on the Grading of Recommendations Assessment, Development, and Evaluation methodology: considerations for practice management and implementation.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ní Áinle F,
DiMichele D,
Falck-Ytter Y,
Smit C,
De Paula EV,
Seth T,
Chuansumrit A,
Middeldorp S</span><br />
<span class="medgenPMjournal">J Thromb Haemost</span>
2024 Sep;22(9):2404-2409.
Epub 2024 Jun 20
doi: 10.1016/j.jtha.2024.06.002.
<span class="bold">PMID: </span><a href="/pubmed/38908829" target="_blank">38908829</a></div>
<div class="nl"><a target="_blank" href="/pubmed/36108649">The More Recent History of Hemophilia Treatment.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Franchini M,
Mannucci PM</span><br />
<span class="medgenPMjournal">Semin Thromb Hemost</span>
2022 Nov;48(8):904-910.
Epub 2022 Sep 15
doi: 10.1055/s-0042-1756188.
<span class="bold">PMID: </span><a href="/pubmed/36108649" target="_blank">36108649</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25059285">Definitions in hemophilia: communication from the SSC of the ISTH.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Blanchette VS,
Key NS,
Ljung LR,
Manco-Johnson MJ,
van den Berg HM,
Srivastava A;
Subcommittee on Factor VIII, Factor IX and Rare Coagulation Disorders of the Scientific and Standardization Committee of the International Society on Thrombosis and Hemostasis</span><br />
<span class="medgenPMjournal">J Thromb Haemost</span>
2014 Nov;12(11):1935-9.
Epub 2014 Sep 3
doi: 10.1111/jth.12672.
<span class="bold">PMID: </span><a href="/pubmed/25059285" target="_blank">25059285</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(hereditary%20factor%20ix%20deficiency%20disease)%20AND%20(%22english%20and%20humans%22%5BFilter%5D)%20AND%20(%20(%22practice%20guideline%22%5BFilter%5D)%20OR%20(practice*%5Btitl%5D%20AND%20(guideline%5Btitl%5D%20OR%20parameter%5Btitl%5D%20OR%20resource%5Btitl%5D%20OR%20bulletin%5Btitl%5D%20OR%20best%5Btitl%5D))%20OR%20(genetic*%5Btitl%5D%20AND%20(evaluation%5Btitl%5D%20OR%20counseling%5Btitl%5D%20OR%20screening%5Btitl%5D%20OR%20test*%5Btitl%5D))%20OR%20(clinical%5Btitl%5D%20AND%20((expert%5Btitl%5D%20AND%20consensus%5Btitl%5D)%20OR%20utility%5Btitl%5D%20OR%20guideline*%5Btitl%5D))%20OR%20(management%5Btitl%5D%20AND%20(clinical%5Btitl%5D%20OR%20diagnos*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20pain%5Btitl%5D%20OR%20surveillance%5Btitl%5D%20OR%20emergency%5Btitl%5D%20OR%20guideline*%5Btitl%5D%20OR%20therap*))%20OR%20(treatment%5Btitl%5D%20AND%20((evaluation%5Btitl%5D%20AND%20diagnosis%5Btitl%5D)%20OR%20(assessment%5Btitl%5D%20AND%20prevention%5Btitl%5D)%20OR%20therap*))%20OR%20(Diagnos*%5Btitl%5D%20AND%20(prenatal%5Btitl%5D%20OR%20treatment%5Btitl%5D%20OR%20follow-up%5Btitl%5D%20OR%20statement%5Btitl%5D%20OR%20criteria%5Btitl%5D%20OR%20newborn%5Btitl%5D%20OR%20differential%5Btitl%5D%20OR%20neonatal%5Btitl%5D%20OR%20neonate%5Btitl%5D))%20OR%20(guideline*%5Btitl%5D%20AND%20(pharmacogenetic*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20evidence-based%5Btitl%5D%20OR%20consensus%5Btitl%5D%20OR%20(technical%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20(molecular%5Btitl%5D%20AND%20testing%5Btitl%5D)))%20OR%20(risk%5Btitl%5D%20AND%20assessment%5Btitl%5D)%20OR%20(recommendation*%5Btitl%5D%20AND%20(statement%5Btitl%5D%20OR%20Evidence-based%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(care%20AND%20((Patient%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20primary%5Btitl%5D%20OR%20psychosocial%5Btitl%5D))%20OR%20(Health%5Btitl%5D%20AND%20supervision%5Btitl%5D)%20OR%20(statement%5Btitl%5D%20AND%20(policy%5Btitl%5D%20OR%20position%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(pharmacogenetics%5Btitl%5D%20AND%20(Dosing%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20genotype*%5Btitl%5D%20OR%20drug*%5Btitl%5D))%20OR%20(Chemotherapy%5Btitl%5D%20AND%20decision*%5Btitl%5D)%20OR%20(screening%5Btitl%5D%20AND%20(newborn%5Btitl%5D%20OR%20neonat*%5Btitl%5D%20OR%20detection%5Btitl%5D%20OR%20diagnos*%5Btitl%5D))%20OR%20(criteria%5Btitl%5D%20OR%20genotype*%5Btitl%5D)%20)%20NOT%20(%22Case%20reports%22%5BPublication%20type%5D%20OR%20%22clinical%20study%22%5BPublication%20Type%5D%20OR%20%22randomized%20controlled%20trial%22%5BPublication%20Type%5D)" title="PubMed search">See all (490)</a></div><h3 class="subhead">Curated<a class="help jig-ncbi-popper" data-jig="ncbipopper" href="#guidelinesHelpCurated"><img class="pulldown" src="//static.pubmed.gov/portal/portal3rc.fcgi/4223267/img/4204968" /></a></h3>
<div class="nl"><a target="_blank" href="/pubmed/22274582">Clinical utility gene card for: haemophilia B.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Jenkins PV,
Keenan C,
Keeney S,
Cumming T,
O'Donnell JS</span><br />
<span class="medgenPMjournal">Eur J Hum Genet</span>
2012 May;20(5)
Epub 2012 Jan 25
doi: 10.1038/ejhg.2011.268.
<span class="bold">PMID: </span><a href="/pubmed/22274582" target="_blank">22274582</a><a href="/pmc/articles/PMC3330231" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=" title="PubMed search"></a></div></div>
</div>
<div class="display-none help-popup" id="guidelinesHelpPM">These guidelines are articles in PubMed that match specific search criteria developed by MedGen to capture the most relevant practice guidelines. This list may not be comprehensive and may include broader topics as well. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div><div class="display-none help-popup" id="guidelinesHelpCurated">These guidelines are manually curated by the MedGen team
to supplement articles available in PubMed. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div>
<div class="portlet mgSection" id="ID_103">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Recent_clinical_studies">Recent clinical studies</h1><a sid="103" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><h3 class="subhead">Etiology</h3>
<div class="nl"><a target="_blank" href="/pubmed/37003287">Efficacy and safety of fitusiran prophylaxis in people with haemophilia A or haemophilia B with inhibitors (ATLAS-INH): a multicentre, open-label, randomised phase 3 trial.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Young G,
Srivastava A,
Kavakli K,
Ross C,
Sathar J,
You CW,
Tran H,
Sun J,
Wu R,
Poloskey S,
Qiu Z,
Kichou S,
Andersson S,
Mei B,
Rangarajan S</span><br />
<span class="medgenPMjournal">Lancet</span>
2023 Apr 29;401(10386):1427-1437.
Epub 2023 Mar 29
doi: 10.1016/S0140-6736(23)00284-2.
<span class="bold">PMID: </span><a href="/pubmed/37003287" target="_blank">37003287</a></div>
<div class="nl"><a target="_blank" href="/pubmed/30704767">Radiosynovectomy in haemophilia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Rodriguez-Merchan EC</span><br />
<span class="medgenPMjournal">Blood Rev</span>
2019 May;35:1-6.
Epub 2019 Jan 25
doi: 10.1016/j.blre.2019.01.002.
<span class="bold">PMID: </span><a href="/pubmed/30704767" target="_blank">30704767</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25409372">Long-term safety and efficacy of factor IX gene therapy in hemophilia B.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Nathwani AC,
Reiss UM,
Tuddenham EG,
Rosales C,
Chowdary P,
McIntosh J,
Della Peruta M,
Lheriteau E,
Patel N,
Raj D,
Riddell A,
Pie J,
Rangarajan S,
Bevan D,
Recht M,
Shen YM,
Halka KG,
Basner-Tschakarjan E,
Mingozzi F,
High KA,
Allay J,
Kay MA,
Ng CY,
Zhou J,
Cancio M,
Morton CL,
Gray JT,
Srivastava D,
Nienhuis AW,
Davidoff AM</span><br />
<span class="medgenPMjournal">N Engl J Med</span>
2014 Nov 20;371(21):1994-2004.
doi: 10.1056/NEJMoa1407309.
<span class="bold">PMID: </span><a href="/pubmed/25409372" target="_blank">25409372</a><a href="/pmc/articles/PMC4278802" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/16690373">Overview of inhibitors.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Astermark J</span><br />
<span class="medgenPMjournal">Semin Hematol</span>
2006 Apr;43(2 Suppl 4):S3-7.
doi: 10.1053/j.seminhematol.2006.03.006.
<span class="bold">PMID: </span><a href="/pubmed/16690373" target="_blank">16690373</a></div>
<div class="nl"><a target="_blank" href="/pubmed/8800503">Prenatal diagnosis of haemophilia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ljung RC</span><br />
<span class="medgenPMjournal">Baillieres Clin Haematol</span>
1996 Jun;9(2):243-57.
doi: 10.1016/s0950-3536(96)80061-8.
<span class="bold">PMID: </span><a href="/pubmed/8800503" target="_blank">8800503</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Hereditary%20factor%20IX%20deficiency%20disease%22%20AND%20Etiology%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (1283)</a></div><h3 class="subhead">Diagnosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/36485127">Gene therapy for hemophilia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Nathwani AC</span><br />
<span class="medgenPMjournal">Hematology Am Soc Hematol Educ Program</span>
2022 Dec 9;2022(1):569-578.
doi: 10.1182/hematology.2022000388.
<span class="bold">PMID: </span><a href="/pubmed/36485127" target="_blank">36485127</a><a href="/pmc/articles/PMC9821304" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26897598">The past and future of haemophilia: diagnosis, treatments, and its complications.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Peyvandi F,
Garagiola I,
Young G</span><br />
<span class="medgenPMjournal">Lancet</span>
2016 Jul 9;388(10040):187-97.
Epub 2016 Feb 18
doi: 10.1016/S0140-6736(15)01123-X.
<span class="bold">PMID: </span><a href="/pubmed/26897598" target="_blank">26897598</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25059285">Definitions in hemophilia: communication from the SSC of the ISTH.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Blanchette VS,
Key NS,
Ljung LR,
Manco-Johnson MJ,
van den Berg HM,
Srivastava A;
Subcommittee on Factor VIII, Factor IX and Rare Coagulation Disorders of the Scientific and Standardization Committee of the International Society on Thrombosis and Hemostasis</span><br />
<span class="medgenPMjournal">J Thromb Haemost</span>
2014 Nov;12(11):1935-9.
Epub 2014 Sep 3
doi: 10.1111/jth.12672.
<span class="bold">PMID: </span><a href="/pubmed/25059285" target="_blank">25059285</a></div>
<div class="nl"><a target="_blank" href="/pubmed/15060928">Haemophilia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Vidler V</span><br />
<span class="medgenPMjournal">Br J Perioper Nurs</span>
2004 Mar;14(3):110-3.
doi: 10.1177/175045890401400302.
<span class="bold">PMID: </span><a href="/pubmed/15060928" target="_blank">15060928</a></div>
<div class="nl"><a target="_blank" href="/pubmed/12781551">Haemophilias A and B.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Bolton-Maggs PH,
Pasi KJ</span><br />
<span class="medgenPMjournal">Lancet</span>
2003 May 24;361(9371):1801-9.
doi: 10.1016/S0140-6736(03)13405-8.
<span class="bold">PMID: </span><a href="/pubmed/12781551" target="_blank">12781551</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Hereditary%20factor%20IX%20deficiency%20disease%22%20AND%20Diagnosis%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (942)</a></div><h3 class="subhead">Therapy</h3>
<div class="nl"><a target="_blank" href="/pubmed/37003287">Efficacy and safety of fitusiran prophylaxis in people with haemophilia A or haemophilia B with inhibitors (ATLAS-INH): a multicentre, open-label, randomised phase 3 trial.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Young G,
Srivastava A,
Kavakli K,
Ross C,
Sathar J,
You CW,
Tran H,
Sun J,
Wu R,
Poloskey S,
Qiu Z,
Kichou S,
Andersson S,
Mei B,
Rangarajan S</span><br />
<span class="medgenPMjournal">Lancet</span>
2023 Apr 29;401(10386):1427-1437.
Epub 2023 Mar 29
doi: 10.1016/S0140-6736(23)00284-2.
<span class="bold">PMID: </span><a href="/pubmed/37003287" target="_blank">37003287</a></div>
<div class="nl"><a target="_blank" href="/pubmed/36812434">Gene Therapy with Etranacogene Dezaparvovec for Hemophilia B.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Pipe SW,
Leebeek FWG,
Recht M,
Key NS,
Castaman G,
Miesbach W,
Lattimore S,
Peerlinck K,
Van der Valk P,
Coppens M,
Kampmann P,
Meijer K,
O'Connell N,
Pasi KJ,
Hart DP,
Kazmi R,
Astermark J,
Hermans CRJR,
Klamroth R,
Lemons R,
Visweshwar N,
von Drygalski A,
Young G,
Crary SE,
Escobar M,
Gomez E,
Kruse-Jarres R,
Quon DV,
Symington E,
Wang M,
Wheeler AP,
Gut R,
Liu YP,
Dolmetsch RE,
Cooper DL,
Li Y,
Goldstein B,
Monahan PE</span><br />
<span class="medgenPMjournal">N Engl J Med</span>
2023 Feb 23;388(8):706-718.
doi: 10.1056/NEJMoa2211644.
<span class="bold">PMID: </span><a href="/pubmed/36812434" target="_blank">36812434</a></div>
<div class="nl"><a target="_blank" href="/pubmed/34232980">Gene therapy for hemophilia: a review on clinical benefit, limitations, and remaining issues.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Leebeek FWG,
Miesbach W</span><br />
<span class="medgenPMjournal">Blood</span>
2021 Sep 16;138(11):923-931.
doi: 10.1182/blood.2019003777.
<span class="bold">PMID: </span><a href="/pubmed/34232980" target="_blank">34232980</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29211678">Hemophilia B Gene Therapy with a High-Specific-Activity Factor IX Variant.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">George LA,
Sullivan SK,
Giermasz A,
Rasko JEJ,
Samelson-Jones BJ,
Ducore J,
Cuker A,
Sullivan LM,
Majumdar S,
Teitel J,
McGuinn CE,
Ragni MV,
Luk AY,
Hui D,
Wright JF,
Chen Y,
Liu Y,
Wachtel K,
Winters A,
Tiefenbacher S,
Arruda VR,
van der Loo JCM,
Zelenaia O,
Takefman D,
Carr ME,
Couto LB,
Anguela XM,
High KA</span><br />
<span class="medgenPMjournal">N Engl J Med</span>
2017 Dec 7;377(23):2215-2227.
doi: 10.1056/NEJMoa1708538.
<span class="bold">PMID: </span><a href="/pubmed/29211678" target="_blank">29211678</a><a href="/pmc/articles/PMC6029626" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25427203">Haemophilia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Brody H</span><br />
<span class="medgenPMjournal">Nature</span>
2014 Nov 27;515(7528):S157.
doi: 10.1038/515S157a.
<span class="bold">PMID: </span><a href="/pubmed/25427203" target="_blank">25427203</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Hereditary%20factor%20IX%20deficiency%20disease%22%20AND%20Therapy%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (1802)</a></div><h3 class="subhead">Prognosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/27282512">Lethal Epistaxis.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Byard RW</span><br />
<span class="medgenPMjournal">J Forensic Sci</span>
2016 Sep;61(5):1244-9.
Epub 2016 Jun 10
doi: 10.1111/1556-4029.13119.
<span class="bold">PMID: </span><a href="/pubmed/27282512" target="_blank">27282512</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26702034">Gene therapy: progress and predictions.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Collins M,
Thrasher A</span><br />
<span class="medgenPMjournal">Proc Biol Sci</span>
2015 Dec 22;282(1821):20143003.
doi: 10.1098/rspb.2014.3003.
<span class="bold">PMID: </span><a href="/pubmed/26702034" target="_blank">26702034</a><a href="/pmc/articles/PMC4707739" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25409372">Long-term safety and efficacy of factor IX gene therapy in hemophilia B.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Nathwani AC,
Reiss UM,
Tuddenham EG,
Rosales C,
Chowdary P,
McIntosh J,
Della Peruta M,
Lheriteau E,
Patel N,
Raj D,
Riddell A,
Pie J,
Rangarajan S,
Bevan D,
Recht M,
Shen YM,
Halka KG,
Basner-Tschakarjan E,
Mingozzi F,
High KA,
Allay J,
Kay MA,
Ng CY,
Zhou J,
Cancio M,
Morton CL,
Gray JT,
Srivastava D,
Nienhuis AW,
Davidoff AM</span><br />
<span class="medgenPMjournal">N Engl J Med</span>
2014 Nov 20;371(21):1994-2004.
doi: 10.1056/NEJMoa1407309.
<span class="bold">PMID: </span><a href="/pubmed/25409372" target="_blank">25409372</a><a href="/pmc/articles/PMC4278802" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25059285">Definitions in hemophilia: communication from the SSC of the ISTH.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Blanchette VS,
Key NS,
Ljung LR,
Manco-Johnson MJ,
van den Berg HM,
Srivastava A;
Subcommittee on Factor VIII, Factor IX and Rare Coagulation Disorders of the Scientific and Standardization Committee of the International Society on Thrombosis and Hemostasis</span><br />
<span class="medgenPMjournal">J Thromb Haemost</span>
2014 Nov;12(11):1935-9.
Epub 2014 Sep 3
doi: 10.1111/jth.12672.
<span class="bold">PMID: </span><a href="/pubmed/25059285" target="_blank">25059285</a></div>
<div class="nl"><a target="_blank" href="/pubmed/22149959">Adenovirus-associated virus vector-mediated gene transfer in hemophilia B.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Nathwani AC,
Tuddenham EG,
Rangarajan S,
Rosales C,
McIntosh J,
Linch DC,
Chowdary P,
Riddell A,
Pie AJ,
Harrington C,
O'Beirne J,
Smith K,
Pasi J,
Glader B,
Rustagi P,
Ng CY,
Kay MA,
Zhou J,
Spence Y,
Morton CL,
Allay J,
Coleman J,
Sleep S,
Cunningham JM,
Srivastava D,
Basner-Tschakarjan E,
Mingozzi F,
High KA,
Gray JT,
Reiss UM,
Nienhuis AW,
Davidoff AM</span><br />
<span class="medgenPMjournal">N Engl J Med</span>
2011 Dec 22;365(25):2357-65.
Epub 2011 Dec 10
doi: 10.1056/NEJMoa1108046.
<span class="bold">PMID: </span><a href="/pubmed/22149959" target="_blank">22149959</a><a href="/pmc/articles/PMC3265081" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Hereditary%20factor%20IX%20deficiency%20disease%22%20AND%20Prognosis%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (499)</a></div><h3 class="subhead">Clinical prediction guides</h3>
<div class="nl"><a target="_blank" href="/pubmed/36812434">Gene Therapy with Etranacogene Dezaparvovec for Hemophilia B.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Pipe SW,
Leebeek FWG,
Recht M,
Key NS,
Castaman G,
Miesbach W,
Lattimore S,
Peerlinck K,
Van der Valk P,
Coppens M,
Kampmann P,
Meijer K,
O'Connell N,
Pasi KJ,
Hart DP,
Kazmi R,
Astermark J,
Hermans CRJR,
Klamroth R,
Lemons R,
Visweshwar N,
von Drygalski A,
Young G,
Crary SE,
Escobar M,
Gomez E,
Kruse-Jarres R,
Quon DV,
Symington E,
Wang M,
Wheeler AP,
Gut R,
Liu YP,
Dolmetsch RE,
Cooper DL,
Li Y,
Goldstein B,
Monahan PE</span><br />
<span class="medgenPMjournal">N Engl J Med</span>
2023 Feb 23;388(8):706-718.
doi: 10.1056/NEJMoa2211644.
<span class="bold">PMID: </span><a href="/pubmed/36812434" target="_blank">36812434</a></div>
<div class="nl"><a target="_blank" href="/pubmed/36485127">Gene therapy for hemophilia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Nathwani AC</span><br />
<span class="medgenPMjournal">Hematology Am Soc Hematol Educ Program</span>
2022 Dec 9;2022(1):569-578.
doi: 10.1182/hematology.2022000388.
<span class="bold">PMID: </span><a href="/pubmed/36485127" target="_blank">36485127</a><a href="/pmc/articles/PMC9821304" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26702034">Gene therapy: progress and predictions.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Collins M,
Thrasher A</span><br />
<span class="medgenPMjournal">Proc Biol Sci</span>
2015 Dec 22;282(1821):20143003.
doi: 10.1098/rspb.2014.3003.
<span class="bold">PMID: </span><a href="/pubmed/26702034" target="_blank">26702034</a><a href="/pmc/articles/PMC4707739" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25409372">Long-term safety and efficacy of factor IX gene therapy in hemophilia B.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Nathwani AC,
Reiss UM,
Tuddenham EG,
Rosales C,
Chowdary P,
McIntosh J,
Della Peruta M,
Lheriteau E,
Patel N,
Raj D,
Riddell A,
Pie J,
Rangarajan S,
Bevan D,
Recht M,
Shen YM,
Halka KG,
Basner-Tschakarjan E,
Mingozzi F,
High KA,
Allay J,
Kay MA,
Ng CY,
Zhou J,
Cancio M,
Morton CL,
Gray JT,
Srivastava D,
Nienhuis AW,
Davidoff AM</span><br />
<span class="medgenPMjournal">N Engl J Med</span>
2014 Nov 20;371(21):1994-2004.
doi: 10.1056/NEJMoa1407309.
<span class="bold">PMID: </span><a href="/pubmed/25409372" target="_blank">25409372</a><a href="/pmc/articles/PMC4278802" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25059285">Definitions in hemophilia: communication from the SSC of the ISTH.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Blanchette VS,
Key NS,
Ljung LR,
Manco-Johnson MJ,
van den Berg HM,
Srivastava A;
Subcommittee on Factor VIII, Factor IX and Rare Coagulation Disorders of the Scientific and Standardization Committee of the International Society on Thrombosis and Hemostasis</span><br />
<span class="medgenPMjournal">J Thromb Haemost</span>
2014 Nov;12(11):1935-9.
Epub 2014 Sep 3
doi: 10.1111/jth.12672.
<span class="bold">PMID: </span><a href="/pubmed/25059285" target="_blank">25059285</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Hereditary%20factor%20IX%20deficiency%20disease%22%20AND%20Clinical%20prediction%20guides%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (909)</a></div></div>
</div>
<div class="portlet mgSection" id="ID_104">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Recent_systematic_reviews">Recent systematic reviews</h1><a sid="104" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln">
<div class="nl"><a target="_blank" href="/pubmed/34412085">Human coagulation factor IX: a systematic review of its characteristics.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Yin R,
Liu C</span><br />
<span class="medgenPMjournal">Blood Coagul Fibrinolysis</span>
2022 Jan 1;33(1):1-7.
doi: 10.1097/MBC.0000000000001076.
<span class="bold">PMID: </span><a href="/pubmed/34412085" target="_blank">34412085</a></div>
<div class="nl"><a target="_blank" href="/pubmed/32342499">Gene therapy for haemophilia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Sharma A,
Easow Mathew M,
Sriganesh V,
Reiss UM</span><br />
<span class="medgenPMjournal">Cochrane Database Syst Rev</span>
2020 Apr 28;4(4):CD010822.
doi: 10.1002/14651858.CD010822.pub4.
<span class="bold">PMID: </span><a href="/pubmed/32342499" target="_blank">32342499</a><a href="/pmc/articles/PMC7192367" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/27996087">Gene therapy for haemophilia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Sharma A,
Easow Mathew M,
Sriganesh V,
Reiss UM</span><br />
<span class="medgenPMjournal">Cochrane Database Syst Rev</span>
2016 Dec 20;12(12):CD010822.
doi: 10.1002/14651858.CD010822.pub3.
<span class="bold">PMID: </span><a href="/pubmed/27996087" target="_blank">27996087</a><a href="/pmc/articles/PMC6463803" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24129166">Gene therapy as a new treatment option for inherited monogenic diseases.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Boudes PF</span><br />
<span class="medgenPMjournal">Eur J Intern Med</span>
2014 Jan;25(1):31-6.
Epub 2013 Oct 12
doi: 10.1016/j.ejim.2013.09.009.
<span class="bold">PMID: </span><a href="/pubmed/24129166" target="_blank">24129166</a></div>
<div class="nl"><a target="_blank" href="/pubmed/23919318">A systematic review of MR imaging as a tool for evaluating haemophilic arthropathy in children.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Chan MW,
Leckie A,
Xavier F,
Uleryk E,
Tadros S,
Blanchette V,
Doria AS</span><br />
<span class="medgenPMjournal">Haemophilia</span>
2013 Nov;19(6):e324-34.
Epub 2013 Aug 6
doi: 10.1111/hae.12248.
<span class="bold">PMID: </span><a href="/pubmed/23919318" target="_blank">23919318</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Hereditary%20factor%20IX%20deficiency%20disease%22%20AND%20systematic%5Bsb%5D%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (55)</a></div></div>
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<div class="portlet_content ln"><ul id="my-toc"></ul></div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Genetic_Testing_Registry">Genetic Testing Registry</h1><a sid="106" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul><li><a href="/gtr/tests?term=C0008533%5bDISCUI%5d&amp;filter=method%3A2%5F8" target="_blank">Deletion/duplication analysis (35)</a></li>
<li><a href="/gtr/tests?term=C0008533%5bDISCUI%5d&amp;filter=method%3A2%5F29" target="_blank">Detection of homozygosity (2)</a></li>
<li><a href="/gtr/tests?term=C0008533%5bDISCUI%5d&amp;filter=method%3A1%5F2" target="_blank">Enzyme assay (1)</a></li>
<li><a href="/gtr/tests?term=C0008533%5bDISCUI%5d&amp;filter=method%3A2%5F13" target="_blank">Linkage analysis (2)</a></li>
<li><a href="/gtr/tests?term=C0008533%5bDISCUI%5d&amp;filter=method%3A2%5F12" target="_blank">Microsatellite instability testing (MSI) (1)</a></li>
<li><a href="/gtr/tests?term=C0008533%5bDISCUI%5d&amp;filter=method%3A2%5F18" target="_blank">Mutation scanning of select exons (3)</a></li>
<li><a href="/gtr/tests?term=C0008533%5bDISCUI%5d&amp;filter=method%3A2%5F17" target="_blank">Mutation scanning of the entire coding region (2)</a></li>
<li><a href="/gtr/tests?term=C0008533%5bDISCUI%5d&amp;filter=method%3A2%5F9" target="_blank">Sequence analysis of select exons (5)</a></li>
<li><a href="/gtr/tests?term=C0008533%5bDISCUI%5d&amp;filter=method%3A2%5F7" target="_blank">Sequence analysis of the entire coding region (45)</a></li>
<li><a href="/gtr/tests?term=C0008533%5bDISCUI%5d&amp;filter=method%3A2%5F19" target="_blank">Targeted variant analysis (11)</a></li>
<li class="portletSeeAll portletSeeAllPad"><total><a href="/gtr/tests?term=C0008533%5bDISCUI%5d" target="_blank">See all (58)</a></total></li>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Clinical_resources">Clinical resources</h1><a sid="119" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul><li><a href="https://www.omim.org/search?index=entry&amp;start=1&amp;limit=10&amp;sort=score%20desc&amp;field=number&amp;search=306900" target="_blank">OMIM</a></li><li><a href="http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Expert=98879" target="_blank">Orphanet</a></li><li><a href="https://clinicaltrials.gov/search?cond=Hereditary%20factor%20IX%20deficiency%20disease" target="_blank">ClinicalTrials.gov</a></li></ul></div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Practice_guidelines">Practice guidelines</h1><a sid="121" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul class="a_poppers"><li><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(hereditary%20factor%20ix%20deficiency%20disease)%20AND%20(%22english%20and%20humans%22%5BFilter%5D)%20AND%20(%20(%22practice%20guideline%22%5BFilter%5D)%20OR%20(practice*%5Btitl%5D%20AND%20(guideline%5Btitl%5D%20OR%20parameter%5Btitl%5D%20OR%20resource%5Btitl%5D%20OR%20bulletin%5Btitl%5D%20OR%20best%5Btitl%5D))%20OR%20(genetic*%5Btitl%5D%20AND%20(evaluation%5Btitl%5D%20OR%20counseling%5Btitl%5D%20OR%20screening%5Btitl%5D%20OR%20test*%5Btitl%5D))%20OR%20(clinical%5Btitl%5D%20AND%20((expert%5Btitl%5D%20AND%20consensus%5Btitl%5D)%20OR%20utility%5Btitl%5D%20OR%20guideline*%5Btitl%5D))%20OR%20(management%5Btitl%5D%20AND%20(clinical%5Btitl%5D%20OR%20diagnos*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20pain%5Btitl%5D%20OR%20surveillance%5Btitl%5D%20OR%20emergency%5Btitl%5D%20OR%20guideline*%5Btitl%5D%20OR%20therap*))%20OR%20(treatment%5Btitl%5D%20AND%20((evaluation%5Btitl%5D%20AND%20diagnosis%5Btitl%5D)%20OR%20(assessment%5Btitl%5D%20AND%20prevention%5Btitl%5D)%20OR%20therap*))%20OR%20(Diagnos*%5Btitl%5D%20AND%20(prenatal%5Btitl%5D%20OR%20treatment%5Btitl%5D%20OR%20follow-up%5Btitl%5D%20OR%20statement%5Btitl%5D%20OR%20criteria%5Btitl%5D%20OR%20newborn%5Btitl%5D%20OR%20differential%5Btitl%5D%20OR%20neonatal%5Btitl%5D%20OR%20neonate%5Btitl%5D))%20OR%20(guideline*%5Btitl%5D%20AND%20(pharmacogenetic*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20evidence-based%5Btitl%5D%20OR%20consensus%5Btitl%5D%20OR%20(technical%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20(molecular%5Btitl%5D%20AND%20testing%5Btitl%5D)))%20OR%20(risk%5Btitl%5D%20AND%20assessment%5Btitl%5D)%20OR%20(recommendation*%5Btitl%5D%20AND%20(statement%5Btitl%5D%20OR%20Evidence-based%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(care%20AND%20((Patient%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20primary%5Btitl%5D%20OR%20psychosocial%5Btitl%5D))%20OR%20(Health%5Btitl%5D%20AND%20supervision%5Btitl%5D)%20OR%20(statement%5Btitl%5D%20AND%20(policy%5Btitl%5D%20OR%20position%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(pharmacogenetics%5Btitl%5D%20AND%20(Dosing%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20genotype*%5Btitl%5D%20OR%20drug*%5Btitl%5D))%20OR%20(Chemotherapy%5Btitl%5D%20AND%20decision*%5Btitl%5D)%20OR%20(screening%5Btitl%5D%20AND%20(newborn%5Btitl%5D%20OR%20neonat*%5Btitl%5D%20OR%20detection%5Btitl%5D%20OR%20diagnos*%5Btitl%5D))%20OR%20(criteria%5Btitl%5D%20OR%20genotype*%5Btitl%5D)%20)%20NOT%20(%22Case%20reports%22%5BPublication%20type%5D%20OR%20%22clinical%20study%22%5BPublication%20Type%5D%20OR%20%22randomized%20controlled%20trial%22%5BPublication%20Type%5D)" title="PubMed search">PubMed</a><div class="help-popup">See practice and clinical guidelines in PubMed. The search results may include broader topics and may not capture all published guidelines. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div></li><li><a target="_blank" href="/books/?term=((%22clinical%20guidelines%22%5BResource%20Type%5D)%20OR%20%22practice%20guideline%22%5BPublication%20Type%5D)%20AND%20(%22Hereditary%20factor%20IX%20deficiency%20disease%22)">Bookshelf</a><div class="help-popup">See practice and clinical guidelines in NCBI Bookshelf. The search results may include broader topics and may not capture all published guidelines. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div></li></ul><h3 class="subhead">Curated</h3><ul class="a_poppers"><li><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov//22274582/">EuroGenetest, 2012</a><div>Clinical utility gene card for: haemophilia B.</div></li></ul></div>
</div>
<div class="portlet mgSection" id="ID_115">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Molecular_resources">Molecular resources</h1><a sid="115" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul><li><a href="http://www.omim.org/search?index=entry&amp;start=1&amp;limit=10&amp;sort=score%20desc&amp;field=number&amp;search=300746" target="_blank">OMIM</a></li><li><a href="/clinvar/?term=2158[geneid]" target="_blank">View F9 variations in ClinVar</a></li><li><a href="/nuccore/189571648" target="_blank">RefSeqGene</a></li><li><a href="https://catalog.coriell.org/Search?q=306900" target="_blank">Coriell Institute for Medical Research</a></li></ul></div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Consumer_resources">Consumer resources</h1><a sid="116" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul><li><a href="http://www.diseaseinfosearch.org/Hemophilia+B/3315" target="_blank">Genetic Alliance</a></li><li><a href="https://www.malacards.org/card/hemophilia_b" target="_blank">MalaCards</a></li><li><a href="https://vsearch.nlm.nih.gov/vivisimo/cgi-bin/query-meta?v:project=medlineplus&amp;query=Hereditary%20factor%20IX%20deficiency%20disease" target="_blank">MedlinePlus</a></li><li><a href="https://medlineplus.gov/genetics/condition/hemophilia" target="_blank">MedlinePlusGenetics (GHR)</a></li><li><a href="https://rarediseases.info.nih.gov/diseases/8732/disease" target="_blank">NCATS Office of Rare Diseases Research (GARD)</a></li></ul></div>
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<h3>Reviews</h3>
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<a href="/pubmed/20301668" ref="ncbi_uid=&amp;discoId=gtr_reviews&amp;linkpos=1&amp;linkpostotal=3" target="_blank"><span class="gene_reviews">GeneReviews</span></a>
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