Bleeding Disorder, Platelet-Type, 13, is also known as bleeding diathesis due to thromboxane synthesis deficiency. An important gene associated with Bleeding Disorder, Platelet-Type, 13 is TBXA2R (Thromboxane A2 Receptor). Affiliated tissues include bone marrow and bone, and related phenotypes are impaired thromboxane a2 agonist-induced platelet aggregation and epistaxis