PRKAR1A and Carney complex: The PRKAR1A mutation is found in more than 70% of CNC patients, and >100 different mutations have been reported throughout the coding region of PRKAR1A.[6] Horvath reviewed all the known PRKAR1A mutations and has established an online database of the same (http://PRKAR1A.nichd.nih.gov).[7] However, little is known about the role of this mutation in the development of CNC in Asian populations.