IL6 and chronic myelogenous leukemia, BCR-ABL1 positive: In chronic myeloid leukemia (CML), TKI treatment did not affect cytokine expression in patients, and 83.33% of CML patients with pulmonary bacterial infections had IL-6 ≥ 13.78 pg/ml, whereas the probability of pulmonary bacterial infections was 93.55% when levels of IL-6, IL-8, and IL-10 exceeded the critical threshold at the same time (Guan et al., 2023).