McCune-Albright syndromeAn autosomal dominant condition (OMIM:174800) due to altered regulation of cAMP, endocrinopathy (e.g., hyperthyroidism) and hypophosphatemia.
Precocious puberty, polyostotic (cystic fibrous dysplasia) spontaneous fractures at young age, café-au-lait spots on skin, ovarian cysts.
Cyclical 4–6-week fluctuations of plasma oestrogen; afflicted young girls have decreased gonadotropins, decreased response to LH-RH; increased testosterone, increased alkaline phosphatase.
Defects in GNAS, which encodes a G protein that modulates various membrane signalling cascasdes, cause McCune-Albright syndrome.
Aromatase inhibitor testolactone.