Synonyme
Activin A receptor type 1B, Activin A Receptor Type IB, Activin A receptor type II like kinase 4, Activin A type 1B receptor, Activin A type IB receptor, Activin receptor like kinase 4, Activin receptor type 1B, Activin receptor type IB, Activin receptor type-1B, Activin receptor-like kinase 4, ACTR IB, ACTRIB, ACV1B_HUMAN, ACVR 1B, Acvr1b, ACVRLK 4, ACVRLK4, ALK 4, ALK-4, ALK4, Serine(threonine) protein kinase receptor R2, Serine/threonine-protein kinase receptor R2, SKR 2, SKR2