CNF, or Nephrosis 1, congenital, Finnish type (nephrin), is a human gene encoded by NPHS1. It may also be known as: Nephrin; Renal glomerulus-specific cell adhesion receptor; NPHN. The encoded protein has an amino acid length of 1241 and a mass of 134.7 kDa. Other isoforms may exist. CNF is a member of the Immunoglobulin superfamily. Homologs of this gene exist in other organisms, including: Mouse, Frog.