Browsing by Author "Myers, Evan"

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    Human papillomavirus detection in cervical neoplasia attributed to 12 high-risk human papillomavirus genotypes by region
    (Elsevier, 2016-12) Castellsagué, Xavier; Ault, Kevin A.; Bosch, F. Xavier; Brown, Darron; Cuzick, Jack; Ferris, Daron G.; Jours, Elmar A.; Garland, Suzanne M.; Giuliano, Anna R.; Hernandez-Avila, Mauricio; Huh, Warner; Iversen, Ole-Erik; Kjaer, Susanne K.; Luna, Joaquin; Monsonego, Joseph; Muñoz, Nubia; Myers, Evan; Paavonen, Jorma; Pitisuttihum, Punnee; Steben, Marc; Wheeler, Cosette M.; Perez, Gonzalo; Saah, Alfred; Luxembourg, Alain; Sings, Heather L.; Velicer, Christine; Department of Medicine, IU School of Medicine
    Background We estimated the proportion of cervical intraepithelial neoplasia (CIN) cases attributed to 14 HPV types, including quadrivalent (qHPV) (6/11/16/18) and 9-valent (9vHPV) (6/11/16/18/31/33/45/52/58) vaccine types, by region Methods Women ages 15–26 and 24–45 years from 5 regions were enrolled in qHPV vaccine clinical trials. Among 10,706 women (placebo arms), 1539 CIN1, 945 CIN2/3, and 24 adenocarcinoma in situ (AIS) cases were diagnosed by pathology panel consensus. Results Predominant HPV types were 16/51/52/56 (anogenital infection), 16/39/51/52/56 (CIN1), and 16/31/52/58 (CIN2/3). In regions with largest sample sizes, minimal regional variation was observed in 9vHPV type prevalence in CIN1 (~50%) and CIN2/3 (81–85%). Types 31/33/45/52/58 accounted for 25–30% of CIN1 in Latin America and Europe, but 14–18% in North America and Asia. Types 31/33/45/52/58 accounted for 33–38% of CIN2/3 in Latin America (younger women), Europe, and Asia, but 17–18% of CIN2/3 in Latin America (older women) and North America. Non-vaccine HPV types 35/39/51/56/59 had similar or higher prevalence than qHPV types in CIN1 and were attributed to 2–11% of CIN2/3. Conclusions The 9vHPV vaccine could potentially prevent the majority of CIN1-3, irrespective of geographic region. Notwithstanding, non-vaccine types 35/39/51/56/59 may still be responsible for some CIN1, and to a lesser extent CIN2/3.
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    Prevalence, incidence, and natural history of HPV infection in adult women ages 24 to 45 participating in a vaccine trial
    (Elsevier, 2020-05-25) Ferris, Daron G.; Brown, Darron R.; Giuliano, Anna R.; Myers, Evan; Joura, Elmar A.; Garland, Suzanne M.; Kjaer, Susanne K.; Perez, Gonzalo; Saah, Alfred; Luxembourg, Alain; Velicer, Christine; Medicine, School of Medicine
    Objectives The natural history of human papillomavirus (HPV) infection has been studied extensively in young women; this study investigated HPV infection in adult women. Methods Data from 3817 women aged 24–45 years in a global trial of the 4-valent HPV (6/11/16/18) vaccine were used to calculate prevalence of anogenital infections containing 9-valent (9v) HPV vaccine types (6/11/16/18/31/33/45/52/58) and five non-vaccine types (35/39/51/56/59). Incidence of infections and persistent infections was estimated for 989 placebo recipients naive to all 14 HPV types at baseline. Age-adjusted hazard ratios were calculated for various sociodemographic factors. Results Prevalence of anogenital infection was highest in France at 29.2% (9vHPV types) and 21.7% (non-vaccine types) and lowest in the Philippines at 7.6% (9vHPV types) and 5.1% (non-vaccine types). Overall, HPV incidence (per 100 person-years) was 5.2 (9vHPV types) and 4.7 (non-vaccine types), and incidence of persistent infection was 2.7 (9vHPV types) and 2.1 (non-vaccine types). Factors associated with new HPV infections included younger age, younger age at first intercourse, being single, current use of tobacco, and higher number of past and recent sex partners. Conclusions Because mid-adult women acquire new HPV infections, administration of the 9vHPV vaccine could reduce HPV-related morbidity and mortality in this population.