- In November 2020, The U.S. Food and Drug Administration (FDA) had granted Fast Track Designation (FTD) to rilzabrutinib. It is the oral investigational Bruton’s tyrosine kinase (BTK) inhibitor that is used for the treatment of immune thrombocytopenia (ITP). The capacity of Rilzabrutinib to block inflammatory immune cells, abolish autoantibody damaging signalling, and prevent new autoantibody formation without depleting B cells has been demonstrated in studies
