IL9 and B-cell chronic lymphocytic leukemia: High expression of IL-9 was detected in chronic lymphocytic leukemia (CLL), adult T-cell leukemia (ACTL), Hodgkin lymphoma (HD), anaplastic large-cell lymphoma (ALCL) and NKT cell lymphoma by different groups (Table 2) (99, 100, 103, 108, 123).