Provided below are ELISA kits targeting TGFB induced factor homeobox 1, a human protein encoded by TGIF1. This protein is 401 amino acids long, with a mass of 43 kDa, and is a member of the TALE/TGIF homeobox family. 4 isoforms have been identified. This is reported to be a nuclear protein. There is a noted implication in Holoprosencephaly 4. Other alias names for this protein include: homeobox protein TGIF1, 5'-TG-3'-interacting factor 1, TALE homeobox TG-interacting factor, transforming growth factor-beta-induced factor, and 5'-TG-3'-interacting factor 1.