Schönewolf-Greulich B, Ravn K, Hamborg-Petersen B, Brøndum-Nielsen K, Tümer Z. Segregation of a 4p16.3 duplication with a characteristic appearance, macrocephaly, speech delay and mild intellectual disability in a 3-generation family.
Am J Med Genet A 2013;
161A:2358-62. [PMID:
23894085 DOI:
10.1002/ajmg.a.36099]
[Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Accepted: 05/24/2013] [Indexed: 12/22/2022]
Abstract
Microscopically visible rearrangements of chromosome 4p includes the two well known abnormalities: partial trisomy 4p, and deletions of the Wolf-Hirschhorn critical regions 1 and 2 (WHSCR 1 and WHSCR2, respectively), which cause well-defined phenotypes including minor anomalies, and developmental delay/intellectual disability. In contrast small duplications of 4p are rare but with the advent of microarray techniques a few cases have been reported in recent years. Here we describe a 3 Mb duplication at 4p16.3 segregating with a characteristic phenotype, macrocephaly, speech delay and mild intellectual disability in a three generation family.
Collapse