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  • Title: HPV16 is associated with younger age in women with cervical intraepithelial neoplasia grade 2 and 3.
    Author: Baandrup L, Munk C, Andersen KK, Junge J, Iftner T, Kjær SK.
    Journal: Gynecol Oncol; 2012 Feb; 124(2):281-5. PubMed ID: 22036987.
    Abstract:
    OBJECTIVE: To evaluate if women with HPV16 positive CIN2 and CIN3 are diagnosed at a younger age. METHODS: We conducted a population-based cohort study including more than 40,000 women having a liquid based cervical cytology sample taken as part of routine screening. HPV analysis was performed using Hybrid Capture 2 and LiPAv2. The study population was linked to the Danish Pathology Data Bank to retrieve information on subsequent cervical histology. We included HR HPV positive CIN2/3 samples, comprising 173 CIN2 and 467 CIN3 lesions. Due to a high number of multiple concurrent HPV infections, the causative HPV type was assigned to a hierarchically group. RESULTS: In CIN3, the estimated proportion of lesions positive for HPV16 was 68.1% among women aged 20 years and decreased to 38.9% among women aged 50 years. A decrease in HPV16 positivity with increasing age was also observed in CIN2. In a multinomial logistic regression analysis, young age was strongly associated with HPV16 positivity in CIN3 lesions (OR=0.46 per 10 year increase in age, 95% CI: 0.32-0.65). The proportion of HPV16 and/or 18 positive lesions among women diagnosed with CIN2 and CIN3 below 30 years of age was 44% and 75%, respectively. CONCLUSIONS: HPV16 positivity was significantly associated with younger age at diagnosis of CIN3. In a population vaccinated against HPV16 and 18, we will experience a shift to older ages in cervical precancerous lesions. These findings may imply that cervical cancer screening programs could start at an older age in HPV vaccinated populations.
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