Guillaume Canaud, MD, PhD, of the Paris Descartes University, explains why it is important to regularly measure objective outcomes in persons with PiK3CA-related overgrowth syndrome (PROS).
PROS is a group of rare congenital disorders that lead to the overgrowth of parts of the body. PROS is caused by gain of function mutations in the PIK3CA gene. Specific disorders under the umbrella of PROS include fibroadipose hyperplasia, hemihyperplasia multiple lipomatosis (HHML), CLOVES syndrome, macrodactyly, fibroadipose infiltrating lipomatosis, megalencephaly-capillary malformation (MCAP), and dysplastic megalencephaly (DMEG).