View clinical trials related to CIN2.
Filter by:The study will evaluate the immunogenicity and safety of 4-valent and 9-valent HPV recombinant vaccine in Chinese healthy females 20 to 45 years of age.
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 .
To evaluate the safety and immunogenicity 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 9-45 Years.
In the Swedish organised cervical screening program precursors of cervical cancer are detected and treated. Most precursor lesions detected by screening heal spontaneously. Those who progress do it slowly. There are three levels from light; CIN1, moderate; CIN2 to severe; CIN3. Women with CIN3 are always treated, regardless of age, according to current clinical guidelines. Women with CIN2 who are below the age of 25 years are offered active expectance for up to two years because there is good evidence that they will spontaneously heal their lesions (regression) in 40-70% of the cases during that time. Method of treatment is today an excisional procedure of the cervix most often by Large loop excision of the transformation zone (LLETZ/LEEP) Treatment increases the risk of premature birth in a future pregnancy. In 2015 about 1800 excisional procedures of the transformation zone of the cervix were performed in the Västra Götalands regionen (VGR) om Sweden. The average age of first-time mothers in Sweden is rising and in 2014 it was 29 years. Postponed childbearing raises the question whether it is possible to refrain from surgery even for the group of women over 25 years old, with proven CIN2. Existing studies suggest that cure of CIN2 in the age group of and above 25 takes place in the same extent as under 25 years of age.There is lack of evidence concerning clinical follow-up. In a prospective multicenter clinical cohort study (observational study) with careful monitoring, the investigators will examine what proportion of CIN2 changes regress spontaneously within two years in women, 25-30 years old, and if human papillomavirus (HPV) type 16 may can be a marker for poor regression in this group. Instead of LLETZ, active expectance is offered to women this age with CIN2 in five gynecological clinics in VGR. The study protocol includes gynecologist visits every 6 months for two years, including cytology, colposcopy and directed biopsies of the cervix. Power calculation shows 160 women needs to be included, which is expected to occur within one year from the start.
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.
This is a phase II randomized, double-blind placebo-controlled, crossover trial. The primary outcome of this trial is achieving durable eradication persistent high risk HPV infection determined by HPV negative test results achieved while on active treatment with AHCC and maintained for 6 month post supplementation and 12 months post completion of AHCC treatment compared to placebo.
HPV testing for primary cervical cancer screening of women over 30 years of age is likely to become the standard of care in the near future in many areas of the world. Its high sensitivity can significantly improve the effectiveness of screening programs and its prolonged negative predictive value can allow extension of screening intervals. However, a single HPV test has low positive predictive value and can lead to unnecessary workup and over-treatment and generate unnecessary distress. This multi-centric study will screen 50,000 women with HPV testing and compare several triage approaches that can follow HPV testing in order to make an HPV-based screening programme efficient, affordable and sustainable.