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  • Title: Rates and determinants of incidence and clearance of cervical HPV genotypes among HIV-seropositive women in Pune, India.
    Author: Mane A, Sahasrabuddhe VV, Nirmalkar A, Risbud AR, Sahay S, Bhosale RA, Vermund SH, Mehendale SM.
    Journal: J Clin Virol; 2017 Mar; 88():26-32. PubMed ID: 28152432.
    Abstract:
    BACKGROUND: Several studies in recent years have documented the genotype-specific prevalence of HPV infection and wide diversity and multiplicity of HPV genotypes among HIV-seropositive women. Yet, information on changes in HPV genotype-specific incidence and clearance rates over time, and their correlation with clinical or immunologic factors among HIV-seropositive women is scarce. OBJECTIVES: We conducted a prospective study to investigate the incidence and clearance rates of cervical HPV genotypes among HIV-seropositive women in India and expand the evidence base in this area of research. STUDY DESIGN: Cervical samples were collected from n=215 HIV-seropositive women in Pune, India who underwent two screening visits separated by a median of 11-months (interquartile range: 8-18 months). HPV genotypes were determined by Roche Linear Array HPV assay. Individual genotype-specific and carcinogenicity-grouping-specific HPV incidence and clearance rates were calculated and the associations between incidence/clearance and age and HIV-related metrics were explored. RESULTS: Incidence and clearance rates for 'any HPV' and 'carcinogenic HPV' genotypes were 11.1 and 18.3, and 6.7 and 33.8, per 100 person-years, respectively. Incidence and clearance rates for HPV genotypes of alpha-9 species (HPV16, HPV31, HPV33, HPV35, HPV52 and HPV58) and alpha-7 species (HPV18, HPV39, HPV45, HPV59 and HPV68) were 5.8 and 2.04, and 32.1 and 53.5, per 100 person-years, respectively. Clearance of any HPV type was associated with increasing age of participants (odds ratio: 1.08, 95%CI: 1.004-1.17), although the association marginally lost its statistical significance when adjusted for CD4 counts and antiretroviral therapy status. CONCLUSIONS: Genotype-specific clearance rates of HPV were higher than corresponding incidence rates. The suggestion of a positive associations of increasing age with HPV clearance points to the need for etiologic studies on age-related hormonal changes on clearance of cervical HPV infection.
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