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<meta name="keywords" content="C0016689, ephelides, ephelis, finding, focal melanosis, freckle, freckles, freckling, melanotic macule, 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="The presence of an increased number of freckles, small circular spots on the skin that are darker than the surrounding skin because of deposits of melanin." /><meta name="robots" content="index,nofollow,noarchive" />
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<!--
UID=5272
ConceptID=C0016689
-->
<!--imgCountBooks = 0--><h1 class="medgenTitle"><div class="MedGenTitleText">Freckling</div></h1><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>5272</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.">C0016689</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding; Finding</dd></dl></div></div><table class="medgenTable"><tbody><tr><td>Synonyms:</td>
<td>Freckle; Freckles</td></tr>
<tr><td><span class="bold">SNOMED CT: </span></td>
<td>Ephelis (403536009); Freckle (403536009); Melanotic macule (699225003); Focal melanosis (699225003); Ephelides (403536009); Melanotic macule (403536009)</td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td>HPO:</td>
<td><a target="_blank" title="Human Phenotype Ontology" href="https://hpo.jax.org/app/browse/term/HP:0001480">HP:0001480</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_100">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Definition">Definition</h1><a sid="100" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln">The presence of an increased number of freckles, small circular spots on the skin that are darker than the surrounding skin because of deposits of melanin. [from <a title="Human Phenotype Ontology" href="http://www.human-phenotype-ontology.org" class="defSource" target="_blank">HPO</a>]</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></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="matched_ds"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C0016689[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=5272">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">Freckling</span></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/871273" ref="tree=MeSH" title="MedGen record for Abnormality of the integument">Abnormality of the integument</a></span><ul><li><span class="TLline"><a href="/medgen/1845238" ref="tree=MeSH" title="MedGen record for Abnormality of the skin">Abnormality of the skin</a></span><ul><li><span class="TLline"><a href="/medgen/869110" ref="tree=MeSH" title="MedGen record for Abnormal skin morphology">Abnormal skin morphology</a></span><ul><li><span class="TLline"><a href="/medgen/224697" ref="tree=MeSH" title="MedGen record for Abnormality of skin pigmentation">Abnormality of skin pigmentation</a></span><ul><li><span class="matched_ds">Freckling</span><ul><li><span class="TLline"><a href="/medgen/348082" ref="tree=MeSH" title="MedGen record for Axillary freckling">Axillary freckling</a></span></li><li><span class="TLline"><a href="/medgen/320315" ref="tree=MeSH" title="MedGen record for Inguinal freckling">Inguinal freckling</a></span></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></div></div></div></div>
</div>
<div class="portlet mgSection" id="ID_112">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Conditions_with_this_feature">Conditions with this feature</h1><a sid="112" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln clinfeat">
<div class="divPopper rprt" id="rdis_18013"><div><strong>Neurofibromatosis, type 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>18013</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.">C0027831</a></dd><dt><span class="dotprefix"></span></dt><dd>Neoplastic Process</dd></dl></div></div></div>
<div class="spaceAbove">Neurofibromatosis 1 (NF1) is a multisystem disorder characterized by multiple café au lait macules, intertriginous freckling, multiple cutaneous neurofibromas, and learning disability or behavior problems. About half of people with NF1 have plexiform neurofibromas, but most are internal and not suspected clinically. Plexiform neurofibromas can cause pain, neurologic deficits, and abnormalities of involved or adjacent structures. Less common but potentially more serious manifestations include optic nerve and other central nervous system gliomas, malignant peripheral nerve sheath tumors, scoliosis, tibial dysplasia, vasculopathy, and gastrointestinal, endocrine, or pulmonary disease.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/18013">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_78643"><div><strong>Xeroderma pigmentosum group B</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>78643</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.">C0268136</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Xeroderma pigmentosum (XP) is characterized by: Acute sun sensitivity (severe sunburn with blistering, persistent erythema on minimal sun exposure) with marked freckle-like pigmentation of the face before age two years; Sunlight-induced ocular involvement (photophobia, severe keratitis, atrophy of the skin of the lids, ocular surface neoplasms); Greatly increased risk of sunlight-induced cutaneous neoplasms (basal cell carcinoma, squamous cell carcinoma, melanoma) within the first decade of life. Approximately 25% of affected individuals have neurologic manifestations (acquired microcephaly, diminished or absent deep tendon stretch reflexes, progressive sensorineural hearing loss, progressive cognitive impairment, and ataxia). The most common causes of death are skin cancer, neurologic degeneration, and internal cancer. The median age at death in persons with XP with neurodegeneration (29 years) was found to be younger than that in persons with XP without neurodegeneration (37 years).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/78643">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_120612"><div><strong>Xeroderma pigmentosum, group F</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>120612</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.">C0268140</a></dd><dt><span class="dotprefix"></span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Xeroderma pigmentosum (XP) is characterized by: Acute sun sensitivity (severe sunburn with blistering, persistent erythema on minimal sun exposure) with marked freckle-like pigmentation of the face before age two years; Sunlight-induced ocular involvement (photophobia, severe keratitis, atrophy of the skin of the lids, ocular surface neoplasms); Greatly increased risk of sunlight-induced cutaneous neoplasms (basal cell carcinoma, squamous cell carcinoma, melanoma) within the first decade of life. Approximately 25% of affected individuals have neurologic manifestations (acquired microcephaly, diminished or absent deep tendon stretch reflexes, progressive sensorineural hearing loss, progressive cognitive impairment, and ataxia). The most common causes of death are skin cancer, neurologic degeneration, and internal cancer. The median age at death in persons with XP with neurodegeneration (29 years) was found to be younger than that in persons with XP without neurodegeneration (37 years).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/120612">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_320296"><div><strong>Neurofibromatosis, familial spinal</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>320296</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.">C1834235</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spinal neurofibromatosis is an autosomal dominant disorder characterized by a high load of spinal tumors. These tumors may be asymptomatic or result in neurologic symptoms, including back pain, difficulty walking, and paresthesias. Spinal NF is considered to be a subtype of neurofibromatosis type I (NF1; 162200), which is an allelic disorder. Patients with spinal NF may or may not have the classic cutaneous cafe-au-lait pigmentary macules or ocular Lisch nodules typically observed in patients with classic NF1. Patients with spinal NF should be followed closely for spinal sequelae (summary by Burkitt Wright et al., 2013).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/320296">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_400232"><div><strong>ADULT syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>400232</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.">C1863204</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The TP63-related disorders comprise six overlapping phenotypes: Ankyloblepharon-ectodermal defects-cleft lip/palate (AEC) syndrome (which includes Rapp-Hodgkin syndrome). Acro-dermo-ungual-lacrimal-tooth (ADULT) syndrome. Ectrodactyly, ectodermal dysplasia, cleft lip/palate syndrome 3 (EEC3). Limb-mammary syndrome. Split-hand/foot malformation type 4 (SHFM4). Isolated cleft lip/cleft palate (orofacial cleft 8). Individuals typically have varying combinations of ectodermal dysplasia (hypohidrosis, nail dysplasia, sparse hair, tooth abnormalities), cleft lip/palate, split-hand/foot malformation/syndactyly, lacrimal duct obstruction, hypopigmentation, hypoplastic breasts and/or nipples, and hypospadias. Findings associated with a single phenotype include ankyloblepharon filiforme adnatum (tissue strands that completely or partially fuse the upper and lower eyelids), skin erosions especially on the scalp associated with areas of scarring, and alopecia, trismus, and excessive freckling.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/400232">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355730"><div><strong>Trichothiodystrophy 1, photosensitive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355730</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.">C1866504</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">About half of all people with trichothiodystrophy have a photosensitive form of the disorder, which causes them to be extremely sensitive to ultraviolet (UV) rays from sunlight. They develop a severe sunburn after spending just a few minutes in the sun. However, for reasons that are unclear, they do not develop other sun-related problems such as excessive freckling of the skin or an increased risk of skin cancer. Many people with trichothiodystrophy report that they do not sweat.\n\nTrichothiodystrophy is also associated with recurrent infections, particularly respiratory infections, which can be life-threatening. People with trichothiodystrophy may have abnormal red blood cells, including red blood cells that are smaller than normal. They may also have elevated levels of a type of hemoglobin called A2, which is a protein found in red blood cells. Other features of trichothiodystrophy can include dry, scaly skin (ichthyosis); abnormalities of the fingernails and toenails; clouding of the lens in both eyes from birth (congenital cataracts); poor coordination; and skeletal abnormalities including degeneration of both hips at an early age.\n\nMothers of children with trichothiodystrophy may experience problems during pregnancy including pregnancy-induced high blood pressure (preeclampsia) and a related condition called HELLP syndrome that can damage the liver. Babies with trichothiodystrophy are at increased risk of premature birth, low birth weight, and slow growth. Most children with trichothiodystrophy have short stature compared to others their age. \n\nThe signs and symptoms of trichothiodystrophy vary widely. Mild cases may involve only the hair. More severe cases also cause delayed development, significant intellectual disability, and recurrent infections; severely affected individuals may survive only into infancy or early childhood.\n\nIn people with trichothiodystrophy, tests show that the hair is lacking sulfur-containing proteins that normally gives hair its strength. A cross section of a cut hair shows alternating light and dark banding that has been described as a "tiger tail."\n\nIntellectual disability and delayed development are common in people with trichothiodystrophy, although most affected individuals are highly social with an outgoing and engaging personality. Some people with trichothiodystrophy have brain abnormalities that can be seen with imaging tests. A common neurological feature of this disorder is impaired myelin production (dysmyelination). Myelin is a fatty substance that insulates nerve cells and promotes the rapid transmission of nerve impulses.\n\nTrichothiodystrophy, commonly called TTD, is a rare inherited condition that affects many parts of the body. The hallmark of this condition is hair that is sparse and easily broken. </div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355730">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_370709"><div><strong>Legius syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>370709</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:">C1969623</span></a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Legius syndrome is characterized by multiple café au lait macules without neurofibromas or other tumor manifestations of neurofibromatosis type 1 (NF1). Additional clinical manifestations reported commonly include intertriginous freckling, lipomas, macrocephaly, and learning disabilities / attention-deficit/hyperactivity disorder (ADHD) / developmental delays. Current knowledge of the natural history of Legius syndrome is based on the clinical manifestations of fewer than 300 individuals with a molecularly confirmed diagnosis; better delineation of the clinical manifestations and natural history of Legius syndrome will likely occur as more affected individuals are identified.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/370709">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_388559"><div><strong>Carney complex, type 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>388559</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.">C2607929</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Carney complex (CNC) is characterized by skin pigmentary abnormalities, myxomas, endocrine tumors or overactivity, and schwannomas. Pale brown to black lentigines are the most common presenting feature of CNC and typically increase in number at puberty. Cardiac myxomas occur at a young age, may occur in any or all cardiac chambers, and can manifest as intracardiac obstruction of blood flow, embolic phenomenon, and/or heart failure. Other sites for myxomas include the skin, breast, oropharynx, and female genital tract. Primary pigmented nodular adrenocortical disease (PPNAD), which causes Cushing syndrome, is the most frequently observed endocrine tumor in CNC, occurring in approximately 25% of affected individuals. Large cell calcifying Sertoli cell tumors (LCCSCTs) are observed in one third of affected males within the first decade and in most adult males. Up to 75% of individuals with CNC have multiple thyroid nodules, most of which are nonfunctioning thyroid follicular adenomas. Clinically evident acromegaly from a growth hormone (GH)-producing adenoma is evident in approximately 10% of adults. Psammomatous melanotic schwannoma (PMS), a rare tumor of the nerve sheath, occurs in an estimated 10% of affected individuals. The median age of diagnosis is 20 years.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/388559">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_416702"><div><strong>Xeroderma pigmentosum, group C</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>416702</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.">C2752147</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Xeroderma pigmentosum (XP) is characterized by: Acute sun sensitivity (severe sunburn with blistering, persistent erythema on minimal sun exposure) with marked freckle-like pigmentation of the face before age two years; Sunlight-induced ocular involvement (photophobia, severe keratitis, atrophy of the skin of the lids, ocular surface neoplasms); Greatly increased risk of sunlight-induced cutaneous neoplasms (basal cell carcinoma, squamous cell carcinoma, melanoma) within the first decade of life. Approximately 25% of affected individuals have neurologic manifestations (acquired microcephaly, diminished or absent deep tendon stretch reflexes, progressive sensorineural hearing loss, progressive cognitive impairment, and ataxia). The most common causes of death are skin cancer, neurologic degeneration, and internal cancer. The median age at death in persons with XP with neurodegeneration (29 years) was found to be younger than that in persons with XP without neurodegeneration (37 years).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/416702">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_419514"><div><strong>Hermansky-Pudlak syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>419514</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.">C2931875</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hermansky-Pudlak syndrome (HPS) is characterized by oculocutaneous albinism, a bleeding diathesis, and, in some individuals, pulmonary fibrosis, granulomatous colitis, and/or immunodeficiency. Ocular findings include nystagmus, reduced iris pigment, reduced retinal pigment, foveal hypoplasia with significant reduction in visual acuity (usually in the range of 20/50 to 20/400), and strabismus in many individuals. Hair color ranges from white to brown; skin color ranges from white to olive and is usually at least a shade lighter than that of other family members. The bleeding diathesis can result in variable degrees of bruising, epistaxis, gingival bleeding, postpartum hemorrhage, colonic bleeding, and prolonged bleeding with menses or after tooth extraction, circumcision, and/or other surgeries. Pulmonary fibrosis, colitis, and/or neutropenia have been reported in individuals with pathogenic variants in some HPS-related genes. Pulmonary fibrosis, a restrictive lung disease, typically causes symptoms in the early 30s and can progress to death within a decade. Granulomatous colitis is severe in about 15% of affected individuals. Neutropenia and/or immune defects occur primarily in individuals with pathogenic variants in AP3B1 and AP3D1.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/419514">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_764087"><div><strong>UV-sensitive syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>764087</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.">C3551173</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">UV-sensitive syndrome-1 (UVSS1) is an autosomal recessive disorder characterized by cutaneous photosensitivity and mild freckling, without an increased risk of skin tumors. Patient cells show impaired recovery of RNA synthesis (RRS) after UV irradiation due to defective preferential repair of DNA damage in actively transcribing genes, although unscheduled DNA repair is normal. The cellular findings are consistent with a defect in transcription-coupled nucleotide excision repair (TC-NER) of UV damage (summary by Horibata et al., 2004).&#13; Genetic Heterogeneity of UV-Sensitive Syndrome&#13; See also UVSS2 (614621), caused by mutation in the ERCC8 gene (609412) on chromosome 5q12, and UVSS3 (614640), caused by mutation in the UVSSA gene (614632) on chromosome 4p16.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/764087">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766212"><div><strong>UV-sensitive syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766212</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.">C3553298</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">UV-sensitive syndrome-2 (UVSS2) is an autosomal recessive disorder characterized by cutaneous photosensitivity and increased freckling, without an increased risk of skin tumors. Patient cells show impaired recovery of RNA synthesis (RRS) after UV irradiation due to defective preferential repair of DNA damage in actively transcribing genes, although unscheduled DNA repair is normal. The cellular findings are consistent with a defect in transcription-coupled nucleotide excision repair (TC-NER) of UV damage (summary by Nardo et al., 2009).&#13; See also Cockayne syndrome type A (CSA; 216400), an allelic disorder with a more severe phenotype including neurologic symptoms and skeletal abnormalities.&#13; For a general phenotypic description and a discussion of genetic heterogeneity of UVSS, see UVSS1 (600630).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766212">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766242"><div><strong>UV-sensitive syndrome 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766242</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.">C3553328</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">UV-sensitive syndrome-3 is an autosomal recessive disorder characterized by cutaneous photosensitivity and slight dyspigmentation, without an increased risk of skin tumors. Patient cells show impaired recovery of RNA synthesis (RRS) after UV irradiation due to defective preferential repair of DNA damage in actively transcribing genes, although unscheduled DNA repair is normal. The cellular findings are consistent with a defect in transcription-coupled nucleotide excision repair (TC-NER) of UV damage (summary by Itoh et al., 1994 and Nakazawa et al., 2012).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of UVSS, see UVSS1 (600630).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766242">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_903767"><div><strong>Autosomal dominant intellectual disability-craniofacial anomalies-cardiac defects syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>903767</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.">C4225396</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Arboleda-Tham syndrome (ARTHS) is an autosomal dominant disorder with the core features of impaired intellectual development, speech delay, microcephaly, cardiac anomalies, and gastrointestinal complications (summary by Kennedy et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/903767">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1373459"><div><strong>Hypotrichosis-lymphedema-telangiectasia-renal defect syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1373459</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.">C4317151</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hypotrichosis-lymphedema-telangiectasia-renal defect syndrome is an autosomal dominant disorder characterized by these 4 features, which begin in early childhood and are progressive (summary by Moalem et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1373459">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1376945"><div><strong>Noonan syndrome-like disorder with loose anagen hair 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1376945</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.">C4479577</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An inherited condition caused by autosomal dominant mutation(s) in the PPP1CB gene, encoding serine/threonine-protein phosphatase PP1-beta catalytic subunit. The condition is characterized by facial features similar to those seen in Noonan syndrome but may also include short stature, cognitive deficits, relative macrocephaly, small posterior fossa resulting in Chiari I malformation, hypernasal voice, cardiac defects, and ectodermal abnormalities, which typically presents as slow-growing, sparse, and/or unruly hair.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1376945">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1678330"><div><strong>Cancer, alopecia, pigment dyscrasia, onychodystrophy, and keratoderma</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1678330</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.">C5193062</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CAPOK syndrome (CAPOK) is characterized by onset of symptoms in the first year of life, with the development of progressive alopecia, hypo- and hyperpigmented macular skin lesions, palmoplantar keratoderma, and nail dystrophy. Beginning in the third decade of life, patients develop recurrent squamous cell carcinomas. Some patients may have brittle teeth resulting in tooth loss, and multinodular goiter has been observed (Courcet et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1678330">Condition Record</a></div></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_400232" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">ADULT syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_903767" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal dominant intellectual disability-craniofacial anomalies-cardiac defects syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1678330" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cancer, alopecia, pigment dyscrasia, onychodystrophy, and keratoderma</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_388559" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Carney complex, type 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_419514" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hermansky-Pudlak syndrome 1</a></div><div class="jig-moreless" data-jigconfig="class: 'moveDown', moreText: 'See full list (17)', lessText: 'Show less', nodeBefore: 0"><span id="clinMore">
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1373459" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypotrichosis-lymphedema-telangiectasia-renal defect syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_370709" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Legius syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_320296" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurofibromatosis, familial spinal</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_18013" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurofibromatosis, type 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1376945" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Noonan syndrome-like disorder with loose anagen hair 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355730" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Trichothiodystrophy 1, photosensitive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_764087" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">UV-sensitive syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766212" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">UV-sensitive syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766242" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">UV-sensitive syndrome 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_78643" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Xeroderma pigmentosum group B</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_416702" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Xeroderma pigmentosum, group C</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_120612" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Xeroderma pigmentosum, group F</a></div></span></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/34928431">Challenges in the diagnosis of neurofibromatosis type 1 (NF1) in young children facilitated by means of revised diagnostic criteria including genetic testing for pathogenic NF1 gene variants.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Kehrer-Sawatzki H,
Cooper DN</span><br />
<span class="medgenPMjournal">Hum Genet</span>
2022 Feb;141(2):177-191.
Epub 2021 Dec 20
doi: 10.1007/s00439-021-02410-z.
<span class="bold">PMID: </span><a href="/pubmed/34928431" target="_blank">34928431</a><a href="/pmc/articles/PMC8807470" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/27322474">Comprehensive RNA Analysis of the NF1 Gene in Classically Affected NF1 Affected Individuals Meeting NIH Criteria has High Sensitivity and Mutation Negative Testing is Reassuring in Isolated Cases With Pigmentary Features Only.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Evans DG,
Bowers N,
Burkitt-Wright E,
Miles E,
Garg S,
Scott-Kitching V,
Penman-Splitt M,
Dobbie A,
Howard E,
Ealing J,
Vassalo G,
Wallace AJ,
Newman W;
Northern UK NF1 Research Network,
Huson SM</span><br />
<span class="medgenPMjournal">EBioMedicine</span>
2016 May;7:212-20.
Epub 2016 Apr 13
doi: 10.1016/j.ebiom.2016.04.005.
<span class="bold">PMID: </span><a href="/pubmed/27322474" target="_blank">27322474</a><a href="/pmc/articles/PMC4909377" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26979265">An Update on Neurofibromatosis Type 1: Not Just Café-au-Lait Spots, Freckling, and Neurofibromas. An Update. Part I. Dermatological Clinical Criteria Diagnostic of the Disease.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Hernández-Martín A,
Duat-Rodríguez A</span><br />
<span class="medgenPMjournal">Actas Dermosifiliogr</span>
2016 Jul-Aug;107(6):454-64.
Epub 2016 Mar 12
doi: 10.1016/j.ad.2016.01.004.
<span class="bold">PMID: </span><a href="/pubmed/26979265" target="_blank">26979265</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(%22freckling%22%5Btiab%3A~0%5D)%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 (31)</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/39072970">Conservative management of gynecomastia in Peutz-Jeghers syndrome: Case series and review of the literature.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Skafida M,
Duvall MM,
Zelley K,
Baldino SE,
Brodeur GM,
Kolon T,
Mostoufi-Moab S,
MacFarland SP</span><br />
<span class="medgenPMjournal">Pediatr Blood Cancer</span>
2024 Oct;71(10):e31180.
Epub 2024 Jul 28
doi: 10.1002/pbc.31180.
<span class="bold">PMID: </span><a href="/pubmed/39072970" target="_blank">39072970</a></div>
<div class="nl"><a target="_blank" href="/pubmed/28230061">Neurofibromatosis type 1.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Gutmann DH,
Ferner RE,
Listernick RH,
Korf BR,
Wolters PL,
Johnson KJ</span><br />
<span class="medgenPMjournal">Nat Rev Dis Primers</span>
2017 Feb 23;3:17004.
doi: 10.1038/nrdp.2017.4.
<span class="bold">PMID: </span><a href="/pubmed/28230061" target="_blank">28230061</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26892652">Familial skin cancer syndromes: Increased melanoma risk.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ransohoff KJ,
Jaju PD,
Tang JY,
Carbone M,
Leachman S,
Sarin KY</span><br />
<span class="medgenPMjournal">J Am Acad Dermatol</span>
2016 Mar;74(3):423-34; quiz 435-6.
doi: 10.1016/j.jaad.2015.09.070.
<span class="bold">PMID: </span><a href="/pubmed/26892652" target="_blank">26892652</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26564071">Neurofibromatosis type 1.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Anderson JL,
Gutmann DH</span><br />
<span class="medgenPMjournal">Handb Clin Neurol</span>
2015;132:75-86.
doi: 10.1016/B978-0-444-62702-5.00004-4.
<span class="bold">PMID: </span><a href="/pubmed/26564071" target="_blank">26564071</a></div>
<div class="nl"><a target="_blank" href="/pubmed/14705792">Molecular genetics of Xeroderma pigmentosum variant.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Gratchev A,
Strein P,
Utikal J,
Sergij G</span><br />
<span class="medgenPMjournal">Exp Dermatol</span>
2003 Oct;12(5):529-36.
doi: 10.1034/j.1600-0625.2003.00124.x.
<span class="bold">PMID: </span><a href="/pubmed/14705792" target="_blank">14705792</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Freckling%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 (209)</a></div><h3 class="subhead">Diagnosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/34599064">Congenital Pigmentary Anomalies in the Newborn.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Habeshian KA,
Kirkorian AY</span><br />
<span class="medgenPMjournal">Neoreviews</span>
2021 Oct;22(10):e660-e672.
doi: 10.1542/neo.22-10-e660.
<span class="bold">PMID: </span><a href="/pubmed/34599064" target="_blank">34599064</a></div>
<div class="nl"><a target="_blank" href="/pubmed/31466597">Phakomatoses.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Becker B,
Strowd RE 3rd</span><br />
<span class="medgenPMjournal">Dermatol Clin</span>
2019 Oct;37(4):583-606.
doi: 10.1016/j.det.2019.05.015.
<span class="bold">PMID: </span><a href="/pubmed/31466597" target="_blank">31466597</a></div>
<div class="nl"><a target="_blank" href="/pubmed/28230061">Neurofibromatosis type 1.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Gutmann DH,
Ferner RE,
Listernick RH,
Korf BR,
Wolters PL,
Johnson KJ</span><br />
<span class="medgenPMjournal">Nat Rev Dis Primers</span>
2017 Feb 23;3:17004.
doi: 10.1038/nrdp.2017.4.
<span class="bold">PMID: </span><a href="/pubmed/28230061" target="_blank">28230061</a></div>
<div class="nl"><a target="_blank" href="/pubmed/27637020">Choroidal Freckling in Pediatric Patients Affected by Neurofibromatosis Type 1.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Vagge A,
Nelson LB,
Capris P,
Traverso CE</span><br />
<span class="medgenPMjournal">J Pediatr Ophthalmol Strabismus</span>
2016 Sep 1;53(5):271-4.
doi: 10.3928/01913913-20160719-05.
<span class="bold">PMID: </span><a href="/pubmed/27637020" target="_blank">27637020</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26892652">Familial skin cancer syndromes: Increased melanoma risk.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ransohoff KJ,
Jaju PD,
Tang JY,
Carbone M,
Leachman S,
Sarin KY</span><br />
<span class="medgenPMjournal">J Am Acad Dermatol</span>
2016 Mar;74(3):423-34; quiz 435-6.
doi: 10.1016/j.jaad.2015.09.070.
<span class="bold">PMID: </span><a href="/pubmed/26892652" target="_blank">26892652</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Freckling%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 (250)</a></div><h3 class="subhead">Therapy</h3>
<div class="nl"><a target="_blank" href="/pubmed/32366782">Coincidental Expression of Classic Hodgkin Lymphoma and Neurofibromatosis Type I and Literature Review.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Cabrera TB,
Wang W,
Yedururi S,
Slopis JM,
Steiner RE,
Rytting ME,
Cuglievan B</span><br />
<span class="medgenPMjournal">J Pediatr Hematol Oncol</span>
2021 May 1;43(4):e535-e538.
doi: 10.1097/MPH.0000000000001811.
<span class="bold">PMID: </span><a href="/pubmed/32366782" target="_blank">32366782</a></div>
<div class="nl"><a target="_blank" href="/pubmed/27637020">Choroidal Freckling in Pediatric Patients Affected by Neurofibromatosis Type 1.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Vagge A,
Nelson LB,
Capris P,
Traverso CE</span><br />
<span class="medgenPMjournal">J Pediatr Ophthalmol Strabismus</span>
2016 Sep 1;53(5):271-4.
doi: 10.3928/01913913-20160719-05.
<span class="bold">PMID: </span><a href="/pubmed/27637020" target="_blank">27637020</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24517859">Sun-induced freckling: ephelides and solar lentigines.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Praetorius C,
Sturm RA,
Steingrimsson E</span><br />
<span class="medgenPMjournal">Pigment Cell Melanoma Res</span>
2014 May;27(3):339-50.
Epub 2014 Mar 3
doi: 10.1111/pcmr.12232.
<span class="bold">PMID: </span><a href="/pubmed/24517859" target="_blank">24517859</a></div>
<div class="nl"><a target="_blank" href="/pubmed/2570195">Personal risk-factor chart for cutaneous melanoma.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">MacKie RM,
Freudenberger T,
Aitchison TC</span><br />
<span class="medgenPMjournal">Lancet</span>
1989 Aug 26;2(8661):487-90.
doi: 10.1016/s0140-6736(89)92097-7.
<span class="bold">PMID: </span><a href="/pubmed/2570195" target="_blank">2570195</a></div>
<div class="nl"><a target="_blank" href="/pubmed/7073964">Experimental induction of freckles by ultraviolet-B.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Wilson PD,
Kligman AM</span><br />
<span class="medgenPMjournal">Br J Dermatol</span>
1982 Apr;106(4):401-6.
doi: 10.1111/j.1365-2133.1982.tb04531.x.
<span class="bold">PMID: </span><a href="/pubmed/7073964" target="_blank">7073964</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Freckling%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 (89)</a></div><h3 class="subhead">Prognosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/26975629">Xeroderma Pigmentosum.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Black JO</span><br />
<span class="medgenPMjournal">Head Neck Pathol</span>
2016 Jun;10(2):139-44.
Epub 2016 Mar 14
doi: 10.1007/s12105-016-0707-8.
<span class="bold">PMID: </span><a href="/pubmed/26975629" target="_blank">26975629</a><a href="/pmc/articles/PMC4838978" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25981987">Family with Legius syndrome (neurofibromatosis type 1-like syndrome).</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Sakai N,
Maeda T,
Kawakami H,
Uchiyama M,
Harada K,
Tsuboi R,
Mitsuhashi Y</span><br />
<span class="medgenPMjournal">J Dermatol</span>
2015 Jul;42(7):703-5.
Epub 2015 May 18
doi: 10.1111/1346-8138.12862.
<span class="bold">PMID: </span><a href="/pubmed/25981987" target="_blank">25981987</a></div>
<div class="nl"><a target="_blank" href="/pubmed/12403552">Neurofibromatosis 1: clinical manifestations and diagnostic criteria.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Friedman JM</span><br />
<span class="medgenPMjournal">J Child Neurol</span>
2002 Aug;17(8):548-54; discussion 571-2, 646-51.
doi: 10.1177/088307380201700802.
<span class="bold">PMID: </span><a href="/pubmed/12403552" target="_blank">12403552</a></div>
<div class="nl"><a target="_blank" href="/pubmed/11000302">Deep-seated segmental neurofibromatosis without café au lait spots.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ogose A,
Hotta T,
Imaizumi S,
Saito H,
Homma T,
Takahashi HE</span><br />
<span class="medgenPMjournal">Skeletal Radiol</span>
2000 Sep;29(9):543-7.
doi: 10.1007/s002560000234.
<span class="bold">PMID: </span><a href="/pubmed/11000302" target="_blank">11000302</a></div>
<div class="nl"><a target="_blank" href="/pubmed/3341431">Ganglioglioma of the optic nerve.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Bergin DJ,
Johnson TE,
Spencer WH,
McCord CD</span><br />
<span class="medgenPMjournal">Am J Ophthalmol</span>
1988 Feb 15;105(2):146-9.
doi: 10.1016/0002-9394(88)90177-8.
<span class="bold">PMID: </span><a href="/pubmed/3341431" target="_blank">3341431</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Freckling%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 (78)</a></div><h3 class="subhead">Clinical prediction guides</h3>
<div class="nl"><a target="_blank" href="/pubmed/28747691">The absence that makes the difference: choroidal abnormalities in Legius syndrome.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Tucci A,
Saletti V,
Menni F,
Cesaretti C,
Scuvera G,
Esposito S,
Melloni G,
Esposito S,
Milani D,
Cereda C,
Cigada M,
Tresoldi L,
Viola F,
Natacci F</span><br />
<span class="medgenPMjournal">J Hum Genet</span>
2017 Nov;62(11):1001-1004.
Epub 2017 Jul 27
doi: 10.1038/jhg.2017.78.
<span class="bold">PMID: </span><a href="/pubmed/28747691" target="_blank">28747691</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26979265">An Update on Neurofibromatosis Type 1: Not Just Café-au-Lait Spots, Freckling, and Neurofibromas. An Update. Part I. Dermatological Clinical Criteria Diagnostic of the Disease.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Hernández-Martín A,
Duat-Rodríguez A</span><br />
<span class="medgenPMjournal">Actas Dermosifiliogr</span>
2016 Jul-Aug;107(6):454-64.
Epub 2016 Mar 12
doi: 10.1016/j.ad.2016.01.004.
<span class="bold">PMID: </span><a href="/pubmed/26979265" target="_blank">26979265</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26956402">An Update on Neurofibromatosis Type 1: Not Just Café-au-Lait Spots and Freckling. Part II. Other Skin Manifestations Characteristic of NF1. NF1 and Cancer.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Hernández-Martín A,
Duat-Rodríguez A</span><br />
<span class="medgenPMjournal">Actas Dermosifiliogr</span>
2016 Jul-Aug;107(6):465-73.
Epub 2016 Mar 5
doi: 10.1016/j.ad.2016.01.009.
<span class="bold">PMID: </span><a href="/pubmed/26956402" target="_blank">26956402</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24517859">Sun-induced freckling: ephelides and solar lentigines.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Praetorius C,
Sturm RA,
Steingrimsson E</span><br />
<span class="medgenPMjournal">Pigment Cell Melanoma Res</span>
2014 May;27(3):339-50.
Epub 2014 Mar 3
doi: 10.1111/pcmr.12232.
<span class="bold">PMID: </span><a href="/pubmed/24517859" target="_blank">24517859</a></div>
<div class="nl"><a target="_blank" href="/pubmed/23420652">Concomitant meningioma and glioma within the same optic nerve in neurofibromatosis type 1.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Büyükkapu-Bay S,
Akça A,
Karadoğan M,
Çorapçioğlu F,
Anik Y</span><br />
<span class="medgenPMjournal">J Child Neurol</span>
2014 Mar;29(3):385-8.
Epub 2013 Feb 17
doi: 10.1177/0883073812475157.
<span class="bold">PMID: </span><a href="/pubmed/23420652" target="_blank">23420652</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Freckling%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 (111)</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/27212418">Café-au-lait Macules and Neurofibromatosis Type 1: A Review of the Literature.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Bernier A,
Larbrisseau A,
Perreault S</span><br />
<span class="medgenPMjournal">Pediatr Neurol</span>
2016 Jul;60:24-29.e1.
Epub 2016 Mar 19
doi: 10.1016/j.pediatrneurol.2016.03.003.
<span class="bold">PMID: </span><a href="/pubmed/27212418" target="_blank">27212418</a></div>
<div class="nl"><a target="_blank" href="/pubmed/20143394">Estimating the attributable fraction for melanoma: a meta-analysis of pigmentary characteristics and freckling.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Olsen CM,
Carroll HJ,
Whiteman DC</span><br />
<span class="medgenPMjournal">Int J Cancer</span>
2010 Nov 15;127(10):2430-45.
doi: 10.1002/ijc.25243.
<span class="bold">PMID: </span><a href="/pubmed/20143394" target="_blank">20143394</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Freckling%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 (2)</a></div></div>
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<h2 class="offscreen_noflow">Supplemental Content</h2>
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<div class="portlet mgSection" id="ID_113">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Table_of_contents">Table of contents</h1><a sid="113" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul id="my-toc"></ul></div>
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<div class="portlet_content ln"><ul><li><a href="/gtr/tests?term=C0016689%5bDISCUI%5d&amp;filter=method%3A2%5F8" target="_blank">Deletion/duplication analysis (6)</a></li>
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