CRFR1, or Corticotropin releasing hormone receptor 1, is a human gene encoded by CRHR1. It may also be known as: Corticotropin-releasing factor receptor 1; CRF-R-1; CRF-R1; CRFR-1; Corticotropin-releasing hormone receptor 1; CRH-R-1; CRH-R1; corticotropin-releasing factor receptor; CRF-R; CRF1; CRHR; CRHR1L. The encoded protein has an amino acid length of 444 and a mass of 50.7 kDa. Other isoforms may exist. CRFR1 is a member of the G-protein coupled receptor 2 family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Frog.