spinal muscular atrophy spinal muscular atrophy, type 1 spinal muscular atrophy type 0 https://www.malacards.org/card/spinal_muscular_atrophy_type_0 MONDO:0850170 UMLS:C4324643 MEDGEN:1843403 GARD:0026588 A childhood spinal muscular atrophy that is evident before birth and characterized by diminished movement in the womb, joint deformities, extremely weak muscle tone and very weak respiratory muscles. DOID:0080667