Immunodeficiency 49, also known as imd49, is related to leukemia, acute myeloid and lymphoma, non-hodgkin, familial. An important gene associated with Immunodeficiency 49 is BCL11B (BCL11 Transcription Factor B), and among its related pathways/superpathways are Chemokine Superfamily: Human/Mouse Ligand-Receptor Interactions and Regulation of retinoblastoma protein. Affiliated tissues include t cells and bone marrow, and related phenotypes are intellectual disability and seizure