In this study, venous blood samples were obtained from 100 women with Cytomegalovirus infection whose ages ranged from 18 to 60 years, and 100 healthy women as a control group. The study was conducted at Al-Elwiya teaching hospital in Baghdad city during the period from 1st November 2021 to 15th June 2022. the distrbution of study groups according to age revealed a significant difference (P=0.01) in the cervicitis patient group (34.43±11.89) in comparison with the control group (39.05±13.53). The distrbution of study groups according to the residency showed that residents of rural areas were 51(51.0%) in comparison with the control group and residents of urban areas were 49(49.0%), while the healthy control group was 51(51.0%) with no significant differences (P=0.088). A highly significant differences were bserved between the mean levels of tumor marker Ca125 in patients (25.5±0.71) in comparison with the healthy controls (19.40±0.68), and between mean levels of Ca15.3 (20.80±0.74) and the healthy control group (18.34±0.77). In addition, the mean levels of CRP was (88.06±5.88) versus the controls (6.73±0.12), with a highly significant differences (P<0.001). Also, no significant differences were seen between mean levels of Ca19.9 marker (19.62±0.79) and the control group (19.21±0.71) (P= 0.7). The distribution of polymorphism according to complete blood picture was shown in table (3) .The mean lymphocyte count was 12(60%), while there was a decrease in Hb levels 3(15%), PCV value 4(20%) and Nuetrophil count 2(10%), with no significant differences. there was no mutation occured in the analysis of rs888160762 SNP of PTGS2 gene, but showed a mutation occured in the analysis of rs20417 SNP of PTGS2 gene using Sanger sequencing. The single “C” peak indicates C homozygous alleles, while the presence of “G” and “C” peaks indicates G/C heterozygous alleles