Pik3ca-Related Overgrowth Spectrum, also known as pik3ca related overgrowth spectrum, is related to obesity due to pro-opiomelanocortin deficiency and facial infiltrating lipomatosis. An important gene associated with Pik3ca-Related Overgrowth Spectrum is PIK3CA (Phosphatidylinositol-4,5-Bisphosphate 3-Kinase Catalytic Subunit Alpha). The drugs Teriflunomide and Ocrelizumab have been mentioned in the context of this disorder. Affiliated tissues include brain and eye.