MADR1 maps to 18q21 and encodes a TGFbeta-regulated MAD-related protein that is functionally mutated in colorectal carcinoma. - Eppert,K.; Scherer,S.W.; Ozcelik,H.; Pirone,R.; Hoodless,P.; Kim,H.; Tsui,L.C.; Bapat,B.; Gallinger,S.; Andrulis,I.L.; Thomsen,G.H.; Wrana,J.L.; et al. (Cell, 1996)