Petra Pharma Corp. has patented phosphatidylinositol 3-kinase α (PI3Kα, PIK3CA) (H1047R mutant) allosteric inhibitors reported to be useful for the treatment of cancer, congenital lipomatous overgrowth, vascular malformations, epidermal naevi and skeletal abnormalities and PIK3CA-related overgrowth spectrum.