MedGen

Platelet-type bleeding disorder-16 (BDPLT16) is an autosomal dominant form of congenital macrothrombocytopenia associated with platelet anisocytosis. It is a disorder of platelet production. Affected individuals may have no or only mildly increased bleeding tendency. In vitro studies show mild platelet functional abnormalities (summary by Kunishima et al., 2011 and Nurden et al., 2011). Genetic Heterogeneity of Glanzmann Thrombasthenia-like with Macrothromocytopenia See BDPLT24 (619271), caused by mutation in the ITGB3 gene (173470) on chromosome 17q21.32. Together the ITGB2B and ITBG3 genes form an integrin, known as platelet glycoprotein GPIIb/III, that is expressed on platelets. [from OMIM]

Glanzmann thrombasthenia-1 (GT1) is an autosomal recessive bleeding disorder characterized by failure of platelet aggregation and by absent or diminished clot retraction. The abnormalities are related to quantitative or qualitative abnormalities of the GPIIb/IIIa (ITGB3; 173470) platelet surface fibrinogen receptor complex resulting from mutations in the GPIIb gene (Rosenberg et al., 1997). Genetic Heterogeneity of Glanzmann Thrombasthenia See Glanzmann thrombasthenia-2 (GT2; 619267), caused by mutation the ITGB3 gene (173470) on chromosome 17q21.32. See review by Botero et al. (2020). [from OMIM]