Rallybio Corporation is a clinical-stage biotechnology company engaged in developing and commercializing life-transforming therapies for patients with severe and rare diseases. It has a pipeline of product candidates aimed at addressing diseases with unmet medical needs in the areas of maternal fetal health, complement dysregulation, hematology, and metabolic disorders. It has two clinical-stage programs: RLYB212, an anti-HPA-1a antibody for the prevention of fetal and neonatal alloimmune thrombocytopenia (FNAIT) and RLYB116, an inhibitor of complement component 5 (C5), with the potential to treat several diseases of complement dysregulation, as well as additional programs in preclinical development. Its other product candidates include RLYB114, RLYB331 and ENPP1 Program. Its second C5 inhibitor, RLYB114, is a pegylated C5-targeted Affibody molecule with PK properties designed for the treatment of complement-mediated ophthalmic diseases. RLYB331 is for the treatment of severe anemia.