obsolete primary cerebellar degeneration https://github.com/monarch-initiative/mondo/issues/8722 https://www.malacards.org/card/primary_cerebellar_degeneration true ICD9:334.2 Reason of obsoletion: out of scope - MONDO:excludeGroupingClass. Term to consider: none- OBSOLETE. A heterogenous group of degenerative syndromes marked by progressive cerebellar dysfunction either in isolation or combined with other neurologic manifestations. Sporadic and inherited subtypes occur. Inheritance patterns include autosomal dominant, autosomal recessive, and X-linked. MONDO:0004742 DOID:9277 SCTID:23732000