has material basis in germline mutation in SMN1 spinal muscular atrophy, type II https://github.com/monarch-initiative/mondo/issues/4521 https://www.malacards.org/card/spinal_muscular_atrophy_type_ii Orphanet:83418 icd11.foundation:867148636 SMA2 Dubowitz disease ICD9:335.19 MONDO:0009673 MESH:C536879 spinal muscular atrophy type II NANDO:1200005 DOID:0050530 Intermediate spinal muscular atrophy SMA II spinal muscular atrophy-2 Proximal spinal muscular atrophy type 2 (SMA2) is a chronic infantile form of proximal spinal muscular atrophy characterized by muscle weakness and hypotonia resulting from the degeneration and loss of the lower motor neurons in the spinal cord and the brain stem nuclei. GARD:0004945 SMA-II UMLS:C0393538 SMA type II OMIM:253550 SCTID:128212001 spinal muscular atrophy, type II MEDGEN:95975 SMA type 2 muscular atrophy, spinal, intermediate type chronic spinal muscular atrophy chronic infantile spinal muscular atrophy spinal muscular atrophy type 2 muscular atrophy, spinal, infantile chronic form proximal spinal muscular atrophy