Riliprubart earns orphan drug designation in the US for antibody-mediated rejection in solid organ transplantation Ongoing phase 2 study evaluating riliprubart for the potential prevention and treatment of active antibody-mediated rejection in kidney transplant recipientsRiliprubart was also designated orphan drug for the investigational use in chronic inflammatory demyelinating polyneuropathy in the US and EU Paris, June 25, 2025. The US Food and Drug Administration (FDA) has granted orphan drug designatio ...