Phase II Expanded Safety and Acceptability Study of the Vaginal Microbicide 1% Tenofovir Gel
试验速览
- 阶段
- 2 期
- 状态
- 已完成
- 入组人数
- 200
- 试验地点
- 6
- 主要终点
- Macroscopic evidence of damage to the cervical, vulvar, or vaginal epithelium, including ulceration and other lesions, severe erythema, or severe edema, related or not related to the study gel or applicator
研究概览
简要总结
The purpose of this study is to determine the safety and acceptability of a vaginal microbicide in HIV uninfected sexually active women.
Study hypothesis: The vaginal microbicide 1% tenofovir will be safe and well tolerated in HIV uninfected women who are in good general health.
详细描述
While the male condom is effective in preventing sexual transmission of HIV, its use is hampered by deeply rooted cultural and social barriers. About half of all HIV infections worldwide occur in women, yet the only available female-controlled method of HIV prevention is the female condom. Alternative prevention tools, such as vaginal microbicides, are urgently needed to slow the rapid spread of heterosexual HIV infection.
This study will last 24 weeks, with an additional 10 weeks of follow-up for participants with chronic hepatitis B virus (HBV) infection. Participants will be randomly assigned to one of four arms. Arm A participants will insert a vaginal tenofovir 1% gel two hours prior to vaginal intercourse for a maximum of two daily applications. Arm B participants will insert a vaginal placebo gel two hours prior to vaginal intercourse for a maximum of two daily applications. Arm C participants will insert a vaginal tenofovir 1% gel once daily at bedtime or during the longest period of daily rest. Arm D participants will insert a vaginal placebo gel once daily at bedtime or during the longest period of daily rest.
A medical and menstrual history update, pregnancy test, HIV and sexually transmitted infections (STI) risk reduction counseling, and interview to assess behaviors toward vaginal gel use will occur during all study visits. HIV/STI counseling and testing, urinalysis, and blood collection will occur at study entry and at Week 24. Pelvic exam with colposcopy and vaginal swab collection will occur at study entry and Weeks 4, 12, and 24. For participants with chronic HBV, additional blood will be collected to monitor hepatitis B infection at study entry and Weeks 12, 24, 28, 32, and 36.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- Double
入排标准
- 年龄范围
- 18 Years 至 50 Years（Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •HIV uninfected
- •Good general health
- •Sexually active
- •Willing to use acceptable methods of contraception, including male latex condoms for all acts of intercourse
- •Willing to undergo all study-related assessments and adhere to the requirements of the study
排除标准
- •Menopausal or postmenopausal
- •Hysterectomy
- •Abnormal screening results for several gynecologic exams
- •Taking or planning to take tenofovir, adefovir, or any other medication for chronic HBV infection
- •History of latex allergy
- •History of adverse reaction to tenofovir or adefovir
- •Use of a diaphragm or spermicide for contraception
- •Prior participation in the study
- •Prior participation in any vaginal microbicide, spermicide, or other drug study within 30 days of study entry
- •Gynecologic surgical procedure within 90 days of study entry
- •Illicit injection drug use within 12 months of study entry
- •History of vaginal intercourse more than an average of two times per day in the two weeks prior to study screening
- •Any other criteria that, in the investigator's opinion, may interfere with the study
- •Current pregnancy or previous pregnancy within 90 days of study entry
- •Breastfeeding
结局指标
主要结局
Macroscopic evidence of damage to the cervical, vulvar, or vaginal epithelium, including ulceration and other lesions, severe erythema, or severe edema, related or not related to the study gel or applicator
次要结局
- acceptability of the study gel
- Adherence to the study gel regimen