Finding the Right Tenofovir/Emtricitabine Regimen for Pre-Exposure Prophylaxis (PrEP) in Transgender Women
试验速览
- 阶段
- 1 期
- 状态
- 已完成
- 入组人数
- 16
- 试验地点
- 1
- 主要终点
- Colon tissue tenofovir diphosphate (TFV-DP)
研究概览
简要总结
This is an open-label, steady-state study of Tenofovir (TFV) and Emtricitabine (FTC) pharmacokinetics (PK) in transgender women taking feminizing hormones. Half of the participants will be transgender women on feminizing hormones, the other half will be male volunteers not taking any hormone therapy.
详细描述
The investigators propose an open-label, steady-state study of TFV and FTC PK in blood and colon tissue in healthy TGW on feminizing hormones to be compared to healthy cis men, all at risk for HIV infection. Research participants will already have received eight days of TDF/FTC dosing. Evaluating TDF and FTC PK at steady-state is important as it reduces inter-individual variability since the rate of phosphorylation of TFV and FTC is highly variable, resulting in highly variable TFV-DP and Emtricitabine-Triphosphate (FTC-TP) PK among individuals in the first day and during rise to steady-state.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Parallel
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •TGW and cis men (male at birth and not a TGW)
- •18 to 65 years of age, inclusive on the date of screening
- •Provides informed consent for the study
- •Non-reactive HIV test results within four weeks of enrollment
- •An estimated calculated creatinine clearance (eCcr) of at least 70 mL/min
- •Agrees to use condoms for all sexual events during study participation.
- •Taking daily oral Truvada® (Tenofovir disoproxil fumarate (TDF) 300 mg/Emtricitabine (FTC) 200 mg) for at least one week at the time of study PK sampling visit
- •TGW have to be on an estradiol and have a serum total estradiol level > 100 picograms(pg)/ml
排除标准
- •Significant colorectal symptom(s) as determined by medical history or by participant self-report
- •Participant-reported symptoms and/or clinical or laboratory diagnosis of active rectal infection requiring treatment per current Centers for Disease Control (CDC) guidelines
- •A positive test for Herpes Simplex Virus -2 (HSV-2) (individuals with active lesions only)
- •Co-enrollment in any other HIV interventional research study (excluding behavioral only interventions) or prior enrollment in the active arm of a HIV vaccine trial.
- •Positive hepatitis B surface antigen (HBsAg) test
- •Interleukin therapy; medications with significant nephrotoxic potential, including but not limited to amphotericin B, aminoglycosides, cidofovir, foscarnet and systemic chemotherapy; medications that may inhibit or compete for elimination via active renal tubular secretion (including but not limited to probenecid); systemic immunomodulatory medications
- •Participants with a history of having a gastrectomy, colostomy, ileostomy, or any other procedure altering the gastrointestinal tract or drug absorption
- •Medications that prolong clotting time
- •Any other condition or prior therapy that, in the opinion of the investigator, would preclude informed consent, make study participation unsafe, make the individual unsuitable for the study or unable to comply with the study requirements.
研究组 & 干预措施
TFV/FTC dosing in Transgender women
Single daily dose of oral Tenofovir Disoproxil Fumarate/Emtricitabine (Truvada)for 7days in transgender women taking feminizing hormones
干预措施: Tenofovir Disoproxil Fumarate/Emtricitabine (Drug)
TFV/FTC dosing in Cis men
Single daily dose of oral Tenofovir Disoproxil Fumarate/Emtricitabine (Truvada) for 7days in cis men
干预措施: Tenofovir Disoproxil Fumarate/Emtricitabine (Drug)
结局指标
主要结局
Colon tissue tenofovir diphosphate (TFV-DP)
时间窗: One week
Endoscopy will be performed to obtain colorectal tissue biopsies. 15 biopsies will be collected and processed to isolate mucosal mononuclear cells (MMC). TFV-DP will be measured and reported as femtomoles per million cells (fmole/10E6 cells).
次要结局
- Ex vivo colon explant HIV challenge(One week)