Uniprot Description An immunodeficiency disease characterized by profoundly decreased or absent monocytes, B-lymphocytes, natural killer lymphocytes, and circulating and tissue dendritic cells, with little or no effect on T-cell numbers. Clinical features of DCML include susceptibility to disseminated non-tuberculous mycobacterial infections, papillomavirus infections, opportunistic fungal infections, and pulmonary alveolar proteinosis. Bone marrow hypocellularity and dysplasia of myeloid, erythroid, and megakaryocytic lineages are present in most patients, as are karyotypic abnormalities, including monosomy 7 and trisomy 8. This syndrome links susceptibility to mycobacterial, viral, and fungal infections with malignancy and can be transmitted in an autosomal dominant pattern.