DO_rare_slim NCIthesaurus has phenotype Felty's syndrome NCI:C84712 MIM:134750 ICD9CM:714.1 DOID:11042 ICD10CM:M05.0 MESH:D005258 GARD:8234 SNOMEDCT_US_2025_09_01:57160007 UMLS_CUI:C0015773 disease_ontology An autoimmune disease that results_in rheumatoid arthritis, splenomegaly and neutropenia. Felty syndrome OMIM mapping confirmed by DO. [SN]. Rheumatoid arthritis with splenoadenomegaly and leukopenia autoimmune disease primary immunodeficiency disease Abnormal circulating immunoglobulin concentration