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Case Reports
. 1994 Apr;93(4):389-93.
doi: 10.1007/BF00201663.

SRVX, a sex reversing locus in Xp21.2-->p22.11

P Arn  1 , H Chen, C M Tuck-Muller, C Mankinen, G Wachtel, S Li, C C Shen, S S Wachtel
Affiliations
Case Reports

SRVX, a sex reversing locus in Xp21.2-->p22.11

P Arn et al. Hum Genet. 1994 Apr.

Abstract

Duplication within Xp21 causes female or intersexual development in human embryos with an XY chromosome complement. We have mapped the responsible gene, SRVX (sex reversal X), in XY-sex-reversed maternal half siblings who had inherited the duplication from their mother. The limited size of the duplication in our cases, relative to its extent in other similar cases, allows assignment of the SRVX locus to Xp21.2-->p22.11. We infer that SRVX is part of a pathway of sex-determining genes that includes SRY and SRA1, the latter recently assigned to chromosome 17q. If mutation of SRA1 or SRVX can reverse the sex of the XY fetus, this would explain why mutation within SRY is found only sporadically in women with XY gonadal dysgenesis.

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