Type : Phenotype or locus, molecular basis unknown;
Alternative titles and symbols : Prostaglandin-endoperoxide synthase 1 deficiency, platelet; Platelet cyclooxygenase 1 deficiency; Platelet cox1 deficiency; Pghs1 deficiency;
Description : Platelet prostaglandin-endoperoxidase synthase-1 deficiency is a hematologic disorder
characterized by mildly increased bleeding due to a platelet defect. The PTGS1 gene
(176805) encodes prostaglandin-endoperoxidase synthase-1, also known as COX1 or PGHS1,
which catalyzes the formation of prostaglandin G2 (PGG2) and prostaglandin H2 from
arachidonic acid, and the downstream formation of thromboxane A2 (TXA2) and prostacyclin.
Thromboxane A2 is important for platelet aggregation (summary by Matijevic-Aleksic
et al., 1996).;