CD307a, or Fc receptor-like 1, is a human gene encoded by FCRL1. It may also be known as: Fc receptor-like protein 1; FcR-like protein 1; FcRL1; Fc receptor homolog 1; FcRH1; IFGP family protein 1; hIFGP1; Immune receptor translocation-associated protein 5; CD antigen CD307a; IFGP1; IRTA5. The encoded protein has an amino acid length of 429 and a mass of 46.9 kDa. Other isoforms may exist. Homologs of this gene exist in other organisms, including: Mouse, Rat.