Aromatase excess syndrome: a rare autosomal dominant disorder leading to pre- or peri-pubertal onset gynecomastia.

Abstract excerpt

Overexpression of CYP19A1 encoding aromatase results in a rare genetic disorder referred to as aromatase excess syndrome (AEXS). Male patients with AEXS manifest pre- or peri-pubertal onset gynecomastia, gonadotropin deficiency, and advanced bone age, while female patients are mostly asymptomatic. To date, 30 male patients with molecularly confirmed AEXS have been reported. A total of 12 types of submicroscopic...

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