Raltegravir Use as Nonoccupational Postexposure Prophylaxis (NPEP) in Men Who Have Sex With Men (RAL-NPEP)
The use of anti-HIV drugs following a potential sexual or injecting drug use exposure to HIV in order to try and prevent an exposure from becoming an infection is common. This is called nonoccupational postexposure prophylaxis (NPEP). The likelihood of NPEP succeeding is related to intrinsic qualities of the drugs used which includes at which point in the life cycle of the HIV virus the drugs work, how strong the drugs are against HIV, and how well tolerated the drugs are i.e. what side effects they produce. Many people skip doses during their treatment or abandon their treatment because of side effects. The anti-HIV drug raltegravir works early in the life cycle of the virus i.e. before it integrates with human DNA, is potent against HIV and causes few side effects. These qualities make it an obvious choice for use as a NPEP treatment. In this study 100 HIV negative men will receive raltegravir along with another HIV drug called truvada (commonly used in NPEP) for 28 days after a possible sexual exposure to HIV. They will be monitored closely for adverse events, side effects and for their ability to take the medicine each day for the whole 28 days. The hypothesis in this study states that raltegravir use in NPEP will be safe, well tolerated and result in a high treatment completion rate.
|Study Design:||Endpoint Classification: Safety Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||Safety, Tolerability, and Adherence to a Raltegravir-based Antiretroviral Regimen for HIV Non-occupational Postexposure Prophylaxis|
- To describe the safety of 28 days of nonoccupational post-exposure prophylaxis containing raltegravir [ Time Frame: 28 days on drug with 5 month follow-up ] [ Designated as safety issue: Yes ]Objective AE and SAE data collection/grading utilising DAIDS data collection tool. Measurement of weight and vital signs, electrolytes, urea, creatinine, eGFR, inorganic phosphate, calcium, liver function, glucose, amylase, lipase, creatine kinase, lactate, urinalysis
- To describe the tolerability of 28 days of NPEP containing raltegravir [ Time Frame: 28 days on-drug and 5 months follow-up ] [ Designated as safety issue: Yes ]Subjective reporting of AEs with data collection/grading utilising DAIDS-AE
- To describe on-drug adherence and regimen completion rates of 28 days of NPEP containing raltegravir [ Time Frame: 28 days ] [ Designated as safety issue: No ]Adherence measurement by self report and pill count at 3 time points during the 28-days of NPEP
- To describe the context of the risk [ Time Frame: Baseline visit day 1 of NPEP ] [ Designated as safety issue: No ]Context of risk event described using directed questioning around pre determined variables
- To investigate whether or not receipt of NPEP decreases, increases or has no impact on future HIV risk taking behaviour [ Time Frame: Visit 2 (day 3-5 of study), visit 7 (day 82-84 of study) visit 9 (day 166-168 of study) ] [ Designated as safety issue: No ]Baseline data collection of HIV risk behaviour in 6 months preceeding NPEP. Repeat data collection at week 12 and week 24 post NPEP risk event. Data collected utilising assisted completion of HIV related behaviour questionaire.
- To describe the effects of raltegravir and truvada on key inflammatory biomarkers [ Time Frame: Day 1 and day 28 of NPEP ] [ Designated as safety issue: No ]Measurement of CR-P, D-Dimer, IL-6 on a subset of 50 patients receiving raltegravir/truvada NPEP and a subset of 25 patients receiving truvada alone as NPEP.
|Study Start Date:||July 2010|
|Study Completion Date:||July 2012|
|Primary Completion Date:||May 2012 (Final data collection date for primary outcome measure)|
Experimental: Raltegravir, NPEP
Drug: Raltegravir Tablet 400mg taken orally, twice daily with or without food for 28 days along with Truvada 1 tablet taken orally daily for 28 days.
Drug: Raltegravir tablet 400mg is taken orally, twice daily with or without food for 28 days along with Tenofovir disoproxil fumarate/emtricitabine 300mg/200mg 1 tablet taken orally once daily with or without food for 28 days.
Arms: Raltegravir/Truvada Other Names: Isentress/Truvada
This is a single site, 72-week, prospective, open-label, non-randomized trial. One hundred and 50 (150) eligible participants will be assigned to receive RAL 400 mg BID along with tenofovir disoproxil fumarate/emtricitabine (TVD) 1 tablet once daily (3-drug NPEP) for 28-days or TVD 1 tablet once daily (2-drug NPEP) for 28-days according to established Australian guidelines for the use of 3 or 2-drug NPEP following a potential or actual sexual exposure to HIV in men who have sex with men (MSM).1 Based on hospital NPEP data over the past 2 years, it is anticipated that 100 MSM will receive 3-drug (RAL-TVD) NPEP and 50 will receive 2-drug (TVD) NPEP. Follow-up post NPEP is for 23 weeks i.e. to week 24 post exposure.
Primary study objectives:
To describe the safety of 28 days of nonoccupational post-exposure prophylaxis(NPEP) containing raltegravir (RAL) To describe the tolerability of 28 days of NPEP containing RAL To describe on-drug adherence and regimen completion rates of 28 days of NPEP containing RAL
Secondary study objectives:
To investigate whether or not receipt of NPEP decreases, increases or has no impact on HIV risk taking behaviour To describe the effects of RAL and tenofovir disoproxil fumarate/emtricitabine (TVD) on key inflammatory biomarkers in a subset of the main study population
|Australia, New South Wales|
|St. Vincent's Hospital, 390 Victoria Rd, Darlinghurst|
|Sydney, New South Wales, Australia, 2010|
|Sydney Sexual Health, Sydney Hospital|
|Sydney, New South Wales, Australia, 2000|
|Principal Investigator:||Robert Fielden, RN||St Vincent's Hospital, Sydney|
|Principal Investigator:||Anna McNulty, MBBS, FAChSHM||Sydney Sexual Health, Sydney Hospital|
|Principal Investigator:||Phillip Read, MBBS, FAChSHM||Sydney Sexual Health, Sydney Hospital|
|Principal Investigator:||Andrew Carr, MBBS, MD||St Vincents Hospital|