The root cause of AEXS is not entirely clear, but it has been elucidated that inheritable, autosomal dominant genetic mutations affecting CYP19A1, the gene which encodes<unk> , are involved in its etiology. Different mutations are associated with differential severity of symptoms, such as mild to severe gynecomastia. For example, duplications result in relatively mild gynecomastia, while deletions, resulting in chimeric genes, cause moderate or severe gynecomastia.
Aromatase excess syndrome
Estrogen insensitivity syndrome
Partial androgen insensitivity syndrome
Mild androgen insensitivity syndrome
Androgen insufficiency syndrome
Androgen insensitivity syndrome
Familial male-limited precocious puberty
Complete androgen insensitivity syndrome