Human platelet antigen‐specific alloantibodies implicated in 1162 cases of neonatal alloimmune thrombocytopenia

Although, as with the earlier series, maternal HPA-1a alloimmunization was the dominant cause of NATP, the identification of an increasing number of cases due to alternative HPA polymorphisms suggests that investigation for HPA-1 incompatibility alone is no longer sufficient to fully evaluate clinically suspect NATP cases.