## Abstract This is the first reported case of dystonia with a partial deletion of the long arm (q) of chromosome 18. Neurologic findings in the 18qโ syndrome include mental retardation, seizures, nystagmus, incoordination, tremor, and chorea. A 36โyearโold woman with an 18q terminal deletion [Kary
Analysis of clinical variation seen in patients with 18q terminal deletions
โ Scribed by Strathdee, Gordon ;Zackai, Elaine H. ;Shapiro, Ray ;Kamholz, John ;Overhauser, Joan
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 785 KB
- Volume
- 59
- Category
- Article
- ISSN
- 0148-7299
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โฆ Synopsis
Abstract
Twentyโsix patients with deletions of 18q were analyzed at the clinical and molecular levels in an attempt to delineate regions of chromosome 18 important to the 18qโ syndrome phenotype. Molecular cytogenetic analysis was carried out using fluorescence in situ hybridization (FISH), and deletions ranging from 18q21.1โqter to 18q22.3โqter were detected. The parental origin of the deletions was determined by the analysis of inheritance of microsatellite markers. No correlation between size, parental origin, or severity of the resulting phenotype was found. The results suggest that a critical region for the 18qโ syndrome lies in the most distal portion of 18q and that it confers susceptibility for the various clinical manifestations of the 18qโ syndrome when present in one copy. ยฉ 1995 WileyโLiss, Inc.
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The most commonly reported manifestations of 16q deletions are severe growth and developmental disorders and anomalies of the craniofacial, visceral, and musculoskeletal systems. We reviewed the findings of patients reported with 16q-syndrome and compared them to our patient, a 4 1 โ2-yearold boy wi