selective IgA deficiency disease IgAD1 https://github.com/monarch-initiative/mondo/issues/4521 Immunoglobulin A, selective deficiency of UMLS:C2931161 immunoglobulin A deficiency, autosomal recessive, autosomal dominant, isolated cases gamma-A-globulin, selective deficiency of NCIT:C123434 MESH:C536290 MONDO:0007644 IgA, selective deficiency of IMMUNOGLOBULIN A deficiency 1 MEDGEN:419725 IgAD1 OMIM:137100 Decreased or absent levels of serum immunoglobulin A, with normal serum levels of immunoglobulin G and immunoglobulin M in a patient who is older than 4 years of age and in whom all other causes of hypogammaglobulinemia have been excluded. Affected individuals may be asymptomatic or have frequent infections, allergic reactions, or autoimmune disorders. IGAD1 GARD:0024568