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Titre du document / Document title

Alopecia androgénica prematura en un varón con déficit de 21-hidroxilasa no clásico. Nueva mutación grave (Y336X) del gen CYP21A2 en 2 hermanos afectados = Premature androgenetic alopecia in adult male with nonclassic 21-OH deficiency. A novel nonsense CYP21A2 mutation (Y336X) in 2 affected siblings

Auteur(s) / Author(s)


Résumé / Abstract

BACKGROUND AND OBJECTIVE: Nonclassical congenital adrenal hyperplasia due to 21-hydroxylase deficiency mainly manifests with symptoms and signs of hyperandrogenism, which are usually obvious in women and sometimes obvious in children or adolescents, but are rarely observed in adult men especially with increasing age. Male pattern alopecia is considered an androgenetic and age-related symptom. However, its early appearance should raise the suspicion of an underlying endocrinological disease, and biochemical screening should be done. PATIENTS AND METHOD: Here we present the case of 2 siblings (female and male) where the man complains about premature alopecia. RESULTS: Molecular study of CYP21A2 revealed that both siblings were compound heterozygotes for the mild mutation (V281L) and for a novel nonsense mutation (Y336X). CONCLUSIONS: Given the high prevalence of carriers with severe mutations, we discuss the risk for such patients of conceiving a child with a classical disease and the need for a reliable molecular diagnosis in order to provide accurate genetic counselling.

Revue / Journal Title

Medicina clinica    ISSN  0025-7753 

Source / Source

2006, vol. 127, no16, pp. 617-621 [5 page(s) (article)]

Langue / Language


Editeur / Publisher

Elsevier, Barcelona, ESPAGNE  (1943) (Revue)

Localisation / Location

INIST-CNRS, Cote INIST : 12388, 35400014316054.0040

Nº notice refdoc (ud4) : 18321326

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