McCune-Albright syndrome
MIM.174800 20q13.3
The McCune-Albright syndrome is characterized by polyostotic fibrous dysplasia, pigment patches of the skin and endocrinologic abnormalities, including precocious puberty, thyrotoxicosis, pituitary gigantism, and Cushing syndrome (MIM.219080). It is usually caused by mosaicism for a mutation in the GNAS1 gene.
Etiology
mosaicism for a mutation in the GNAS1 gene.
Tumoral predisposition
osteosarcoma (14691924)
See also
Mikami M, Koizumi H, Ishii M, Nakajima H. The identification of monoclonality in fibrous dysplasia by methylation-specific polymerase chain reaction for the human androgen receptor gene. Virchows Arch. 2004 Jan;444(1):56-60. PMID: 14576938