Sherlaw-Sturrock CA, Graham S, Morgan A, Reali L, Naik S. Xq21.1q21.31 Duplication in Two Male Siblings.
Mol Syndromol 2022;
13:152-158. [PMID:
35418824 PMCID:
PMC8928204 DOI:
10.1159/000518933]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Accepted: 08/06/2021] [Indexed: 10/10/2023] Open
Abstract
Despite the increased use of array comparative genomic hybridisation, duplications of Xq remain rarely reported in the literature. Xq21.1q21.31 duplication has previously been reported only once in a boy with features of Prader Willi syndrome (PWS). We report 2 malesiblings with maternally inherited duplication of Xq21.1q21.31 who demonstrate a variable phenotype. The proband has Prader Willi-like features such as global developmental delay, autism, obesity, short hands, and small genitalia with a history of food seeking behaviour, while his younger brother has isolated speech delay with some autistic features under evaluation. Both siblings have features such as bitemporal narrowing and small hands. It is therefore likely that the phenotype of duplications in this region is broader than PWS phenocopy, and further cases would be required to elucidate this.
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