Chronic myeloid leukemia (CML) is a myeloproliferative disorders characterized by formation of Philadelphia chromosome. After disease development, several events may associate with the reduction of anti-tumor immunity. The present study was designed to investigate the immunological profile of innate and adaptive immune response in Iraqi patients with CML. Patients were grouped into untreated (UT), treated (T) with chemotherapy, while another apparently healthy individuals were recruited to represent the control (C) group. Methods: ELISA technique was used to estimate serum levels of GM-CSF, IL-1a, IL-8, IL2, INF-?, IL-4, and IL-10 while SRID was used to estimate serum levels of C4, IgM, IgA, and IgG. Results: Regarding to innate immune response, C4 levels significantly reduced in UT and T groups, whereas IL-8increased significantly in UT and T groups. However, there is a non-significant difference in IL-1a and GM-CSF levels. In adaptive immunity, IL-2 in UT and T groups, while IFN-? levels decreased with high significant difference in both UT and T groups, although non-significant change were noticed in levels of IL-4 and IL-10. Similarly, IgM and IgA concentrations were not affected, with an exception that IgG concentration significantly elevated in treated group. In conclusion, CML disease could modulate the engines of immune response in untreated and during chemotherapy treatment which consequently changes the mechanism of antitumor immunity.
