Clinical Research Directory

Game Plan: Efficacy of a Brief, Web-based Intervention on Alcohol Use and Sexually-transmitted Infections

The proposed study involves conducting a larger-scale study exploring Game Plan's effects among MSM in the real-world, alongside innovative approaches for expanding HIV testing. Using a hybrid 1 effectiveness-implementation approach, the investigators will recruit up to 360 high-risk, heavy drinking MSM online from several high-incidence areas in the US to participate in a program providing home-based HIV/STI self-tests in the mail at regular intervals over a year (baseline, 6 months, 12 months). Participants will be randomly assigned to receive access to either (1) a 24-hour helpline for counseling/referrals, or (2) the helpline plus Game Plan. Investigators will test whether those who use Game Plan show lower rates of heavy drinking, any STIs, and high-risk CAS events compared to those receiving access to the helpline alone.

Superiority of On-demand PrEP Versus PEP on Using Doxycycline for Preventing STI in MSM

The goal of this clinical trial is to compare the effectiveness of doxycycline taken for on-demand pre-exposure prophylaxis (DoxyODPrEP) and its post-exposure use (DoxyPEP) in preventing bacterial sexually transmitted infections (STI), including chlamydia, gonorrhoea, and syphilis among men who have sex with men (MSM). The main questions it aims to answer are: 1. Is DoxyODPrEP superior to DoxyPEP? 2. Are both regimens safe? 3. Does the MSM community accept the use of doxycycline to prevent bacterial STI? Participants will be asked to take doxycycline according to the study arm they are randomly assigned to, and attend regular clinical follow-ups during the 2-year observation period. Researchers will compare the bacterial STI incidences between the two groups to see if DoxyODPrEP is superior to DoxyPEP.

Randomized Directly Observed Therapy Study to Interpret Clinical Trials of Doxy-PEP

Rates of bacterial sexually transmitted infections (STIs) are rising globally, demanding innovative interventions beyond the scope of current efforts to prevent STIs. The United States Doxycycline Post-exposure Prophylaxis (DoxyPEP) Study has demonstrated the efficacy of doxycycline post-exposure prophylaxis (PEP) among men who have sex with men and transgender women; but puzzlingly, doxycycline PEP was found ineffective in cisgender women in the Kenyan doxycycline Post-Exposure Prophylaxis (dPEP) study, with preliminary data suggesting the low medication adherence may explain the null result. By study end, the investigators will have developed adherence measurement methods for doxycycline in hair, blood, and urine, and will use these techniques to help interpret the Kenyan dPEP study, and to examine the relative performance of these methods within the United States DoxyPEP trial, establishing adherence metrics for current and future rollout studies of doxycycline post-exposure prophylaxis