GATA2 and acute lymphoblastic leukemia: All patients except ours were found to have concomitant immunosuppressive conditions: 1 with AIDS, 2 with autoimmune diseases (1 systemic lupus (SLE) and 1 Sweet’s syndrome, both taking immunosuppressive agents), 1 who had undergone an organ transplantation, 1 with sickle cell anaemia and 4 with haematological malignancies (1 acute lymphoblastic leukaemia (ALL), 1 chronic lymphocytic leukaemia (CLL), 1 myelodysplastic syndrome (MDS) + GATA2 gene mutation and 1 Hodgkin’s lymphoma).