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Phenotypic Variation in a Family With Partial Androgen Insensitivity Syndrome
Marc Maes, MD;
Peter A. Lee, PhD, MD;
Robert D. Jeffs, MD;
Charles Sultan, MD;
Claude J. Migeon, MD
Am J Dis Child. 1980;134(5):470-473.
Abstract
• A family with partial androgen insensitivity syndrome exhibited considerable variation in phenotypic expression of their androgen resistance. One subject died at 2 years of age of a Wilms' tumor. In the two living members, one had a micropenis with otherwise normal genitalia, while the other had a small phallus, perineoscrotal hypospadias, bifid scrotum, and persistence of a vaginoutricular pouch. At puberty, plasma androgens and serum gonadotropins increased to normal or elevated values. However, despite adequate endogenous plasma testosterone levels and testosterone therapy, these patients showed poor virilization and were sterile. Studies of cultured sexual skin fibroblasts showed adequate 5 -reductase activity and normal receptor affinity and capacity for dihydrotestosterone. An X-linked mode of inheritance is postulated, although autosomal dominance cannot be ruled out.
(Am J Dis Child 134:470-473, 1980)
Author Affiliations
From the Department of Pediatrics, Pediatric Endocrine Clinic, The Johns Hopkins University and Hospital, Baltimore.
Footnotes
Accepted for publication Aug 4, 1979.
Reprint requests to Department of Pediatrics, Division of Pediatric Endocrinology, CMSC 3-110, The Johns Hopkins Hospital, 600 N Wolfe St, Baltimore, MD 21205 (Dr Lee).
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