Objective: To determine plasma levels of interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α), and transforming growth factor-beta (TGF-β), and to investigate their associations with selected laboratory parameters in patients with chronic lymphocytic leukemia (CLL).
Methods: A cross-sectional descriptive study was conducted in 50 patients with CLL from March 2022 to September 2023 at the National Institute of Hematology and Blood Transfusion. Plasma concentrations of IL-6, TNF-α, and TGF-β were quantified using the sandwich enzyme-linked immunosorbent assay (ELISA) method.
Results: The median plasma concentrations of IL-6, TNF-α, and TGF-β were 5.63 pg/mL, 0.88 pg/mL, and 534.53 pg/mL, respectively. IL-6 levels differed significantly among risk groups (p < 0.05). Plasma IL-6 was negatively correlated with hemoglobin concentration (r = −0.288; p = 0.043) and hematocrit (r = −0.304; p = 0.032). Plasma TGF-β levels showed positive correlations with red blood cell count (r = 0.407; p = 0.003), hemoglobin (r = 0.428; p = 0.002), and hematocrit (r = 0.417; p = 0.003).
Conclusion: The median plasma concentrations of IL-6, TNF-α, and TGF-β were 5.63 pg/mL, 0.884 pg/mL, and 534.53 pg/mL, respectively. IL-6 and TGF-β may play a role in altering selected hematological parameters and glucose levels in patients with CLL.