ITGA2B and Glanzmann thrombasthenia 1: Three types of GT have been described: type I is a severe GPIIb/IIIa deficiency (expression levels <5%); type II is a moderate GPIIb/IIIa deficiency (5%-20% expression); and patients with higher expression (>20%) but with a dysfunctional GPIIb/IIIa are classified as having the variant form of GT [[1], [2], [3], [4]].