NFKBIL1 is a symbol for the gene, Nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor-like 1, in humans. Other names include: NF-kappa-B inhibitor-like protein 1; Inhibitor of kappa B-like protein; I-kappa-B-like protein; IkappaBL; IKBL; NFKBIL. The encoded protein has an amino acid length of 381 and a mass of 43.2 kDa. Other isoforms may exist. This gene shares homology with other species, including: Mouse, Frog.