CRL4, or Interleukin 17 receptor B, is a human gene encoded by IL17RB. It may also be known as: Interleukin-17 receptor B; IL-17 receptor B; IL-17RB; Cytokine receptor-like 4; IL-17 receptor homolog 1; IL-17Rh1; IL17Rh1; Interleukin-17B receptor; IL-17B receptor; EVI27; IL17BR. The encoded protein has an amino acid length of 502 and a mass of 55.9 kDa. Other isoforms may exist. Homologs of this gene exist in other organisms, including: Mouse, Rat.