Clinical Research Directory

Regression of Cervical Precancerous Lesions and Associated Risk Factors

The aim of this study is to assess the extent of histopathological regression of severe cervical precancerous lesions (CIN 2 and CIN 3); evaluate the proportion of patients who experience the normalization of HPV test and cytology finding among those who were treated conservatively and those who underwent conization; and identify predictive parameters associated with regression. Based on this analysis, a model will be proposed to predict the likelihood of lesion regression.

Empowering Women - Shared Decision Making in Managing Cervical Precancer

The aim of this stepped-wedge randomized clinical trial is to assess the impact of implementing a patient decision aid during consultations with patients diagnosed with cervical precancer. Specifically, it will evaluate whether the decision aid enhances shared decision-making, improves the patient experience, and influences their treatment preferences. The main questions this study aims to answer are: 1. Will the implementation of the patient decision aid increase the number of patients with cervical precancer who opt for surgery (loop electrical excision) compared to active surveillance? 2. Will the implementation of the patient decision aid improve patients' experience with the course of treatment for cervical precancer? To evaluate this, researchers will compare patients receiving counseling with the support of the decision aid to those receiving standard counseling without the decision aid. After the consultation, participants will complete questionnaires to share their experience. Data on treatment choices will be gathered from patient medical records.

Screening Study for Cervical Pre-cancer and Cancer Prevention in South African Women.

Nearly 8 000 new cervical cancer cases are diagnosed in South Africa per year; many are still undiagnosed and about 50% of diagnosed cases succumb per year. Although the current prevalence of pre-cancer cervical disease is largely unknown, data from local studies suggest regional differences and an increase in the prevalence of cytological abnormalities when compared with historical data. Low frequency in cytology screening is the primary factor attributable to development of invasive cervical cancer and almost one-third of all cervical cancer patients had previous negative cytology. Due to the low sensitivity of cytology it can be assumed that the true prevalence of pre-cancer disease is underestimated by all available data. One round of optimal cervical cytology will detect around 50% of existing pre-cancer cervical disease as identified and proven using colposcopy and directed biopsy. It is now widely accepted that primary screening with a human papilloma virus (HPV) test can improve the sensitivity of screening and that even a single round of HPV screening can rapidly reduce the incidence of invasive cervical cancer and related mortality within a few years. South Africa has a high prevalence of HIV infection and a delay in or failure to initiate antiretroviral therapy (ART). These facts, together with the largely unscreened status of the female population and the high incidence of cervical cancer all suggest that HPV infection and precursors to cervical cancer are both unusually common among South African women. Accurate current knowledge of the performance of newer generation HPV based screening tests in HIV-infected and general female population are essential for cost-analysis and planning for national prevention and screening programs. This study will aim to demonstrate the feasibility and efficacy of new generation HPV deoxyribonucleic acid (DNA) based screening assays in a South African setting. The investigators hypothesize that HPV testing followed by normal and special cytology tests will be a successful screening model for a South African population.

Urine HPV Testing for Cervical Cancer Screening Among Women Living With HIV in South Africa

The purpose of this study explores the usefulness of urine samples for cervical cancer screening in human immunodeficiency virus (HIV)-infected women. Cervical cancer occurs when women are infected with the human papillomavirus (HPV), which can cause changes in the cells that lead to cervical precancer and, eventually, cervical cancer if untreated. However, urine HPV testing has not been well validated low- and middle-income country settings, with no data available to guide its use in HIV-infected women.

Evaluate the Efficacy, Immunogenicity and Safety of 9-valent HPV Recombinant Vaccine in Chinese Healthy Females

This study is designed to evaluate the vaccine efficacy, immunogenicity and safety of the 9-valent Human Papillomavirus (Types 6, 11, 16, 18,31,33,45,52 and 58) Recombinant Vaccine (Hansenula Polymorpha) in Chinese Female Subjects Aged 20-45 Years .

Immunogenicity and Safety of Quadrivalent HPV Vaccine in Healthy Chinese Female Subjects Aged 9 to 19 Years

This phase 3 study will evaluate the immunogenicity and safety of Quadrivalent HPV recombinant vaccine in Chinese females aged 9 to 26 years

Immunobridging Study of 9-valent Human Papillomavirus Recombinant Vaccine in Chinese Females Aged 9 to 19 Years

This phase 3 study will evaluate the immunogenicity and safety of 9-valent HPV recombinant vaccine in Chinese females aged 9 to 45 years

Immune Persistence After the Whole Vaccination Shcedule With Recombination Quadrivalent HPV Vaccine

To access the immune persistence of Chinese women aged 9-45 years after receiving quadrivalent HPV vaccine with the immunization schedule of 0, 2 and 6 months.