MONDO_0012359 (combined immunodeficiency due to partial RAG1 deficiency) is a form of combined T and B cell immunodeficiency (CID) characterized by severe and persistent cytomegalovirus (CMV) infection and autoimmune cytopenia. Also known as: CID due to partial RAG1 deficiency, CID with expansion of gamma delta T cells, combined immunodeficiency with expansion of gamma delta T cells.