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This is a cross-sectional, case–control study analyzing the effect of antiretroviral therapy (ART) including or not maraviroc, on circulating monocytes and natural killer cells. Sixty-eight HIV-positive patients virologically suppressed receiving ART at least 6 months were subdivided as receiving (group 1) or not (group 2) maraviroc in their ART. Frequency of monocytes and natural killer cells, as well as their activation markers, were studied. Modulation of innate immune cells may be differently affected by combined ART.