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De novo partial duplications 1p: Report of two new cases and review

✍ Scribed by Garcia-Heras, Jaime; Corley, Norlela; Garcia, Mary F.; Kukolich, Mary K.; Smith, Kim G.; Day, Donald W.

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 22 KB
Volume: 82
Category: Article
ISSN: 0148-7299
DOI: 10.1002/(sici)1096-8628(19990129)82:3<261::aid-ajmg13>3.0.co;2-l

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✦ Synopsis

We describe two de novo intrachromosomal duplications of 1p. One case is a dir ins dup(1)(q21p21p31) in a newborn girl with low birth weight, growth retardation, and tetralogy of Fallot. The other is a 10-monthold girl with developmental delay, craniosynostosis, plagiocephaly, and an inv dup 1p34.1p31. Although, these patients have manifestations in common with previous cases, they do not establish a syndrome. Interestingly, all males with duplications spanning 1p31 had genital anomalies, whereas females with duplications of the same region had normal genitalia. Thus, genes within 1p31 appear to control the development of male genitalia and tentatively exclude effects of tda1, a sex-determining gene in a region of mouse chromosome 4 syntenic to 1p36 in man. However, it is necessary to identify the human tda1 homologue and candidate genes within 1p31 before drawing final conclusions.

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