Patients with Glanzmann thrombasthenia (GT) may form isoantibodies which induce refractoriness or inhibition of function of transfused platelets. We monitored the survival and function of transfused platelets by flow cytometry and thrombelastography in a patient with GT. Gating on CD42a+ allowed identification of even a few transfused platelets. Only by gating on these CD41+ CD42a+ cells were w...

Glanzmann thrombasthenia (GT) is an autosomal recessive bleeding disorder characterized by deficient or dysfunctional glycoprotein (GP) IIb/IIIa compexes. The hallmark of the disease is impaired platelet aggregation stemming from defective fibrinogen binding to GPIIb/IIIa. Based on deciphering the abnormality in GT a monoclonal antibody, peptides and peptidominetic agents, all interfering with ...

A patient (OG) with Glanzmann thrombasthenia became refractory to platelet transfusion after the production of an immunoglobulin G (IgG) isoantibody (Ab1) specific for the integrin subunit beta 3. To determine the frequency at which the OG idiotype is found in the general population and in immune-mediated disease states, we developed a rabbit polyclonal antibody (Ab2) specific for affinity-puri...