Grem is an alias for the gene, Gremlin 1, DAN family BMP antagonist, in humans. Other names include: Gremlin-1; Cell proliferation-inducing gene 2 protein; Cysteine knot superfamily 1, BMP antagonist 1; DAN domain family member 2; Down-regulated in Mos-transformed cells protein; Increased in high glucose protein 2; IHG-2; C15DUPq; CKTSF1B1; CRAC1; CRCS4; DAND2; DRM; DUP15q; GREMLIN; HMPS; HMPS1; MPSH. The encoded protein has an amino acid length of 184 and a mass of 20.7 kDa. Other isoforms may exist. Grem is a member of the DAN family. This gene shares homology with other species, including: Frog.