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How many people are affected/at risk by McCune-Albright syndrome (MAS)?

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Number of People Affected

MAS is rare, affecting between 1 in every 100,000 to 1 million live births worldwide.1

Who is at risk?

Because the genetic change or mutation that causes MAS occurs at random very early in fetal development, MAS is not an inherited disease, meaning parents do not pass it on to their children.1

MAS likely occurs equally in males and females.


  1. Genetics Home Reference. (2012). McCune-Albright syndrome. Retrieved May 24, 2012, from http://ghr.nlm.nih.gov/condition/mccune-albright-syndrome [top]

Last Updated Date: 11/30/2012
Last Reviewed Date: 11/30/2012
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