disease has location B cell B cell deficiency https://www.malacards.org/card/b_cell_deficiency GARD:0023084 DOID:2115 NCIT:C4799 UMLS:C1855067 ICD9:279.03 B-cell deficiency immunoglobulin heavy chain deficiency See https://github.com/NCI-Thesaurus/thesaurus-obo-edition/issues/18 immunoglobulin heavy chain deletion MONDO:0002211 A broad classification of disorders where circulating numbers of B lymphocytes are decreased or ineffective. Complement components and the production of antibodies may also be deficient. MEDGEN:340780 deficiency of humoral immunity inborn error of immunity leukocyte disorder immunodeficiency disease