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McCune-Albright Syndrome (MAS): Condition Information

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What is MAS?

MAS is a genetic disorder that affects the skin, bones, and the production of certain hormones. Because of its effects on hormones, MAS often causes early puberty in girls. There are also other distinctive symptoms, such as light-brown birthmarks and unusual formations of the bones.1


  1. National Library of Medicine. (2010). McCune-Albright syndrome. Retrieved May 10, 2012, from http://www.nlm.nih.gov/medlineplus/ency/article/001217.htm [top]

Last Updated Date: 01/30/2014
Last Reviewed Date: 01/14/2014
Vision National Institutes of Health Home BOND National Institues of Health Home Home Storz Lab: Section on Environmental Gene Regulation Home Machner Lab: Unit on Microbial Pathogenesis Home Division of Intramural Population Health Research Home Bonifacino Lab: Section on Intracellular Protein Trafficking Home Lilly Lab: Section on Gamete Development Home Lippincott-Schwartz Lab: Section on Organelle Biology