Mosaic overgrowth with fibroadipose hyperplasia is caused by somatic activating mutations in PIK3CA.
Nature Genetics
Lindhurst, Marjorie J MJ; Parker, Victoria E R VE; Payne, Felicity F; Sapp, Julie C JC; Rudge, Simon S; Harris, Julie J; Witkowski, Alison M AM; Zhang, Qifeng Q; Groeneveld, Matthijs P MP; Scott, Carol E CE; Daly, Allan A; Huson, Susan M SM; Tosi, Laura L LL; Cunningham, Michael L ML; Darling, Thomas N TN; Geer, Joseph J; Gucev, Zoran Z; Sutton, V Reid VR; Tziotzios, Christos C; Dixon, Adrian K AK; Helliwell, Timothy T; O'Rahilly, Stephen S; Savage, David B DB; Wakelam, Michael J O MJ; Barroso, InĂªs I; Biesecker, Leslie G LG; Semple, Robert K RK