To the Editor, Fetal and neonatal alloimmune thrombocytopenia (FNAIT) is a serious bleeding condition caused by maternal Immunoglobulin G (IgG) alloantibodies reacting with platelet antigens expressed on fetal platelets. In Caucasian populations, anti-human platelet antigen-1a (anti-HPA-1a) alloantibodies are responsible for about 85% of all FNAIT cases. The clinical presentation of FNAIT varies from asymptomatic thrombocytopenia to severe clinical complications, such as intracranial haemorrhage.