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Chlamydia of Rectum clinical trials

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NCT ID: NCT03010020 Completed - HIV Infections Clinical Trials

STI Screening as a Combined HIV Prevention Platform for MSM in Peru

Start date: July 15, 2017
Phase: N/A
Study type: Interventional

The investigators propose to develop and pilot an HIV prevention intervention based on rectal STI testing, counseling, and treatment for MSM in Peru. The investigators will use nucleic acid testing to screen 750 behaviorally high-risk MSM for rectal gonorrheal and/or chlamydial (GC/CT) infection. GC/CT-positive subjects will receive single-dose antibiotic treatment and single-session Personal Cognitive Counseling (PCC) (n=50) or standard post-test counseling (n=50). A GC/CT-negative control group (n=50) will also be enrolled to compare biological outcomes including changes in levels of inflammatory cytokines following rectal STI. The intervention is based on three interrelated objectives: 1) To use periodic rectal STI nucleic acid testing to identify the members of the MSM population at greatest short-term risk for HIV infection; 2) To provide single-dose antibiotic treatment to control the immune activation and mucosal inflammation caused by rectal GC/CT infection that increase cellular risk for HIV transmission; and 3) To use Personal Cognitive Counseling (PCC) to understand and modify recent high-risk sexual practices that led to rectal STI acquisition and that increase future HIV risk. The investigators propose to screen 750 behaviorally high-risk MSM for rectal GC/CT infection to enroll 100 GC/CT-positive individuals (using a conservative 15% prevalence estimate) and 50 GC/CT-negative controls (matched by age and baseline frequency of URAI). GC/CT-infected participants will be given single-dose antibiotic therapy and randomized to receive single-session PCC (n=50) or standard post-test counseling (n=50). The primary outcome will be the impact of PCC on self-reported sexual risk behavior (URAI). Secondary outcomes will assess: 1) Feasibility/Acceptability of the STI screening program; 2) Impact of GC/CT infection and treatment on levels of inflammatory cytokines (IL-6, IL-8, TNF-αand IL-1β) in rectal mucosa; 3) Prevalence of persistent/recurrent rectal GC/CT; and 4) HIV incidence in GC/CT-infected and -uninfected MSM.