Prothena Corporation plc (NASDAQ:PRTA) today announced that the U.S. Food and Drug Administration (FDA) has granted Fast Track Designation to coramitug, a potential best-in-class amyloid depleter antibody currently in Phase 3 development for the treatment of ATTR amyloidosis with cardiomyopathy (ATTR-CM). Fast Track Designation is intended to facilitate the development and expedite the review of investigational drugs that treat serious conditions and fill an unmet medical need.