Wolf-Hirschhorn syndrome: Difference between revisions
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==Diagnosis== | ==Diagnosis== | ||
==Symptoms== | ==Symptoms== | ||
The most chiommon abnormalties seen include severe to profound [[mental retardation]], [[microcephaly]] ([[small head]]), [[seizures]], poor muscle tone, and [[cleft lip]] and/or [[cleft palate]]. Characteristic facial features, include [[strabismus]], [[hypertelorism]], [[down-turned fishlik mouth]], [[short upper lip]] and [[philtrum]], [[small chin]], [[ear tags]] or [[ear pits|pits]], and [[cranial asymmetry]]. Occasional abnormalities include [[heart defects]], [[hypospadias]], [[scoliosis]], [[ptosis]], [[fused teeth]], [[hearing loss]], [[delayed bone age]], [[low hairline]] with [[webbed neck]], and renal anomalies. | The most chiommon abnormalties seen include severe to profound [[mental retardation]], [[microcephaly]] ([[small head]]), [[seizures]], [[poor muscle tone]], and [[cleft lip]] and/or [[cleft palate]]. Characteristic facial features, include [[strabismus]], [[hypertelorism]], [[down-turned fishlik mouth]], [[short upper lip]] and [[philtrum]], [[small chin]], [[ear tags]] or [[ear pits|pits]], and [[cranial asymmetry]]. Occasional abnormalities include [[heart defects]], [[hypospadias]], [[scoliosis]], [[ptosis]], [[fused teeth]], [[hearing loss]], [[delayed bone age]], [[low hairline]] with [[webbed neck]], and renal anomalies. | ||
==References== | ==References== | ||
Revision as of 13:31, 21 August 2012
| Wolf-Hirschhorn syndrome | |
| ICD-10 | Q93.3 |
|---|---|
| ICD-9 | 758.3 |
| OMIM | 194190 |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Wolf-Hirschhorn syndrome, also known as deletion 4p and 4p- syndrome.
Historical Perspective
Wolf-Hirschhorn syndrome was first described in 1961 by the Americans Herbert L. Cooper and Kurt Hirschhorn[1], and thereafter gained worldwide attention by publications by the German Ulrich Wolf, and Hirschhorn and their co-workers, specifically their articles in the German scientific magazine 'Humangenetik'.[2] [3]It is a characteristic phenotype resulting from a partial deletion of chromosomal material of the short arm of chromosome 4.
Pathophysiology
Wolf-Hirshhorn syndrome is caused by a partial deletion of the short arm of chromosome 4, particularly in the region of WHSC1 and WHSC2. About 87% of cases represent a de novo deletion, while about 13% are inherited from a parent with a chromosome translocation. In the cases of familial translocation, there is a 2 to 1 excess of maternal transmission. Of the de novo cases, 80% are paternally derived. The symptoms and phenotype do not differ based on the size of the deletion. The critical region for determining the phenotype is at 4p16.3 and can often be detected through genetic testing and fluorescent in situ hybridization (FISH). Genetic testing and genetic counseling is offered to affected families.
Diagnosis
Symptoms
The most chiommon abnormalties seen include severe to profound mental retardation, microcephaly (small head), seizures, poor muscle tone, and cleft lip and/or cleft palate. Characteristic facial features, include strabismus, hypertelorism, down-turned fishlik mouth, short upper lip and philtrum, small chin, ear tags or pits, and cranial asymmetry. Occasional abnormalities include heart defects, hypospadias, scoliosis, ptosis, fused teeth, hearing loss, delayed bone age, low hairline with webbed neck, and renal anomalies.
References
- ↑ Cooper H, Hirschhorn K. Apparent deletion of short arms of one chromosome (4 or 5) in a child with defects of midline fusion. Mammalian Chrom Nwsl. 1961;4:14.
- ↑ Hirschhorn K, Cooper HL, Firschein IL. Deletion of short arms of chromosome 4-5 in a child with defects of midline fusion. Humangenetik. 1965;1(5):479-82.
- ↑ Wolf U, Reinwein H, Porsch R, et al. [Deficiency on the short arms of a chromosome No. 4]. Humangenetik. 1965;1(5):397-413.
Template:Chromosomal abnormalities
de:Wolf-Hirschhorn-Syndrom zh-classical:第四染色體缺失症候群 it:Sindrome di Wolf-Hirschhorn nl:Syndroom van Wolf-Hirschhorn