BSP-1, BSP1, Dwarfin-A, Dwf-A, JV4-1, MADH1, MADR1, Mad-related protein 1, Mad1, Mothers against DPP homolog 1, Mothers against decapentaplegic homolog 1, Mothers-against-DPP-related-1, SMAD 1, Smad 1, Transforming growth factor- beta signaling protein-1