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© Research
Publication : Sexual development : genetics, molecular biology, evolution, endocrinology, embryology, and pathology of sex determination and differentiation

A child with a novel de novo mutation in the aristaless domain of the aristaless-related homeobox (ARX) gene presenting with ambiguous genitalia and psychomotor delay

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Diseases
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Published in Sexual development : genetics, molecular biology, evolution, endocrinology, embryology, and pathology of sex determination and differentiation - 25 Jul 2014

Sirisena ND, McElreavey K, Bashamboo A, de Silva KS, Jayasekara RW, Dissanayake VH

Link to Pubmed [PMID] – 25074490

Sex Dev 2014;8(4):156-9

The objective of this study was to identify disease-causing mutations in a Sri Lankan male child presenting with ambiguous genitalia and psychomotor delay using the exome sequencing approach. A novel mutation in the aristaless-related homeobox (ARX) gene causing a hemizygous nucleotide substitution in exon 5 was identified (NM_139058.2 (ARX): c.1614G>T; p.K538N). This change causes a nonsynonymous substitution in the aristaless domain within the ARX protein which is predicted to be deleterious. This is the first reported case of ambiguous genitalia and psychomotor delay associated with this novel missense mutation within the ARX protein, and it highlights the value of exome sequencing even in sporadic cases.

http://www.ncbi.nlm.nih.gov/pubmed/25074490