The CCR2-64I polymorphism has been reported to influence severaldiseases as multiple sclerosis (Miyagishi et al.2003), carotid atherosclerosis (Nyquist et al.2009), breast cancer (Zafiropoulos et al.2004), AIDS progression (Smith et al.1997, Mulherin et al. 2003), and CIN orCC (Coelho et al. 2005, Ivansson et al. 2007, Chatterjee etal. Here, CCR2 is linked to AIDS.