Bleeding Disorder, Platelet-Type, 12, also known as prostaglandin-endoperoxide synthase 1 deficiency, platelet, is related to prostaglandin-endoperoxide synthase deficiency. An important gene associated with Bleeding Disorder, Platelet-Type, 12 is TBXAS1 (Thromboxane A Synthase 1), and among its related pathways/superpathways are Fatty acid metabolism and Oxidation by cytochrome P450. Related phenotypes are epistaxis and bruising susceptibility