Clinical trial NCT03895866: Persistent Cervical HPV Infection With Clearance and Vaginal Microbiota
Official title: Clinical Study on the Relationship Between Persistent Cervical HPV Infection With Clearance and Vaginal Microbial Community
Study type: OBSERVATIONAL
Overall status: UNKNOWN
Conditions: HPV-Related Squamous Cell Carcinoma
Lead sponsor: Peking Union Medical College Hospital
Sponsor class: OTHER
First posted: 2019-03-29
Enrollment: 240
Sex: FEMALE
Minimum age (years): 20
Maximum age (years): 45
Standard ages: ADULT
Accepts healthy volunteers: yes
Observational model: COHORT
Time perspective: PROSPECTIVE
Sampling method: PROBABILITY_SAMPLE
Study population: The participants sample was referred to the paper already published.

Brief summary: Since other genital infections enhance HIV susceptibility by inducing inflammation, the investigators study the relationship between the vaginal microbiota composition and the persistence infection and clearance of HPV infection.

Detailed description: Persistent infection with oncogenic Human Papillomavirus (HPV) is necessary but not sufficient for the development of cervical cancer. Additional factors correlated with HPV persistence include immunodeficiency caused by HIV, smoking, use of oral contraceptives and, more recently reported, vaginal dysbiosis. In a state of dysbiosis, there is a marked reduction of Lactobacillus and a high diversity of bacteria, with increased abundance of anaerobic bacterial species. High-risk HPV cervical infections are common in young, sexually active women. Most of these infections are transient and do not cause clinical symptoms. After 12-30 months of HPV infection, 70-90% of patients can be cleared naturally, but there are still a small number of patients with high-risk HPV infection can not be eliminated by itself and continue to infect, and can develop into cervical intraepithelial neoplasia, eventually progressing to invasive cervical cancer. Persistent infection of high-risk HPV is a necessary condition for the occurrence of cervical cancer and precancerous lesions. Early blocking of persistent infection of high-risk HPV and timely treatment of cervical precancerous lesions are of great significance in preventing the occurrence of cervical cancer. This project intends to study the relationship between vaginal microbial composition and persistent HPV infection, and determine the related strains and their molecular mechanisms, so as to provide new ideas and basis for its treatment.

Eligibility criteria: Inclusion Criteria:

* Those are aged 20 to 45 years old, have had vaginal intercourse more than 3 years, and aren't in menstrual, pregnancy or puerperium period.

Exclusion Criteria:

* Those have no vaginal intercourse, and can't cooperate the examiner. Women who are HIV or hepatitis B/C positive, have autoimmune disorders and systemic disease (like diabetes mellitus, hormone treatment diseases, severe liver and kidney dysfunction), or have severe mental illness and malignant tumors are also excluded. At the same time, all the participants should meet the following requirements: no vagina douching within last 2 days, no vaginal intercourse within last 3 days, no systemic application of antifungal agents or antibiotics or pessaries within last 14 days of sampling.

Primary outcomes:
measure: The relationship between diversity of vaginal microbiota and HR-HPV persistent infection
timeFrame: 12 months
Secondary outcomes:
Other outcomes:
Locations:
city: Beijing
country: China
facility: Peking Union Medical College Hospital
state: Beijing
Study officials:
References: