The prevalence and role of human papillomavirus genotypes in primary cervical screening in the northeast of China.

BACKGROUND

Studies have shown that type-specific persistence of high-risk human papillomavirus (HPV) infection contributed significantly to cervical carcinogenesis.

METHODS

In this population-based study (on 24041 women), we report on the prevalent genotypes of HPVs and the prevalent genotypes of HPV persistent infection in the northeast of China.

RESULTS

Our results showed that in HPV infected women (45.6% in total), (95% CI, 44.97%-46.23%), 17.35% (95%CI, 16.87%-17.83%) suffered persistent infection. The most common high-risk HPV types in persistent positivity were HPV-16 (18.21%; 95%CI, 17.04%-19.38%), HPV-58 (13.2%; 95%CI, 12.17%-14.23%), HPV-18 (8.66%; 95%CI, 7.81%-9.51%), HPV-52 (7.06%; 95% CI, 6.28%-7.84%) and HPV-33 (6.78%; 95% CI, 6.02%-7.54%). The prevalence of persistent infections with HPV-16,-58, -18, -52 and 33 in cervicitis were lower compared to those in CIN (all P < 0.05). HPV-58, -33 and multiple HPV persistent positivity were significantly associated with older age (all P < 0.05). HPV-18 persistent positivity was significantly associated with adenocarcinoma and lymphatic metastasis (all P < 0.05). HPV-18 persistent positivity was associated with cervical cancer prognosis (P <0.0001). Multivariate analyses showed that HPV-18 persistent positivity, (RR = 1.704, 95%CI = 1.095-2.654, p = 0.028) and lymphatic metastasis (RR = 2.304, 95%CI = 1.354-3.254, P = 0.015) were independent predictors for 3-year survival in cervical cancer.

CONCLUSIONS

we provided extensive results of HPV genotype prevalence and distribution in the northeast of China. HPV genotyping is worthwhile to perform because of its independent prognostic value in cervical cancer.