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  • Title: Segregation of a 4p16.3 duplication with a characteristic appearance, macrocephaly, speech delay and mild intellectual disability in a 3-generation family.
    Author: Schönewolf-Greulich B, Ravn K, Hamborg-Petersen B, Brøndum-Nielsen K, Tümer Z.
    Journal: Am J Med Genet A; 2013 Sep; 161A(9):2358-62. PubMed ID: 23894085.
    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.
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