HIV, Medication Adherence
Conditions
Keywords
Antiretroviral, Pharmacokinetics, Urine Test, HIV negative
Brief summary
This is a single-center, open label study to identify adherence levels of commonly prescribed FDA-approved antiretroviral agents by tracking the decline of drug concentrations in plasma, urine and saliva following abrupt drug cessation in HIV-negative adults. Results from this study may provide support for development of a point of care urine testing device to monitor drug adherence.
Detailed description
Poor adherence to antiretroviral (ARV) therapy and HIV pre-exposure prophylaxis (PrEP) incurs costs for patients, health systems, and society. Non-adherence to ARV precedes viral breakthrough and offers opportunities for health-care professionals to intervene. There is a need for accurate, affordable, rapid, and objective monitoring of adherence to be deployed as a companion diagnostic to ARV therapy. Self-reported questionnaires, physician and nurse adherence consistently over-estimate adherence, and pill counts, and pharmacy returns do not yield sufficient precision for individual patients. Therapeutic drug monitoring (TDM) has the advantage tracking medication intake, but sample storage and processing requirements, turnaround times and relatively high cost preclude their widespread deployment. There is a real clinical need for point-of-care adherence testing, which will have high clinical utility by allowing targeting of adherence support and monitoring, better medication review, and integration with community support. Since the clinical utility of any point-of-care test (POCT) will be its negative predictive value, this trial has been designed as a 'tail' study to track the decline of drug concentrations in plasma, urine and saliva following abrupt drug cessation. Such a study will require dosing to healthy participants who are dosed to steady-state prior to treatment discontinuation. Serial measurement of drug concentrations in plasma, saliva and urine will be used to develop population-based models which adequately describe the kinetics of elimination and population variability in drug exposure. These models will be used to simulate population drug exposures from which target cut-offs are derived for development of a POCT device. Approximately thirty healthy, HIV-uninfected participants will be enrolled and equally assigned to one of two ARV dosing arms using a permuted block design randomization scheme. ARM 1: dolutegravir 50 mg + emtricitabine 200 mg/tenofovir alafenamide 25 mg once daily for 15 days ARM 2: dolutegravir 50 mg + tenofovir disoproxil fumarate 300 mg + lamivudine 300 mg once daily for 15 days To assess ARV pharmacokinetics during dosing and over 14 days following ARV cessation, blood, urine, and saliva samples will be collected at Days 1, 2, 8, 15, 16, 17, 18, 19, 22 and 29.
Interventions
DRUGdolutegravir oral tablet 50mg
Tivicay® (dolutegravir, DTG), a HIV-1 integrase strand transfer inhibitor (INSTI), is FDA-approved in combination with other antiretroviral agents for the treatment of HIV-1 infection in adults and in pediatric patients weighing at least 30kg. Tivicay® 50mg tablets \[GlaxoSmithKline\] are yellow, round, film-coated, biconvex tablets debossed with SV 572 on one side and 50 on the other side. The inactive ingredients in each tablet are D-mannitol, microcrystalline cellulose, povidone K29/32, sodium starch glycolate, and sodium stearyl fumarate. The tablet film-coating contains the inactive ingredients iron oxide yellow macrogol/PEG, polyvinyl alcohol-part hydrolyzed, talc, and titanium dioxide.
DRUGemtricitabine/tenofovir alafenamide oral tablet 200mg/25mg
Descovy® (emtricitabine/tenofovir alafenamide, FTC/TAF) is a combination of two HIV nucleoside analog reverse transcriptase inhibitors (NRTIs) FDA-approved in combination with other antiretroviral agents for the treatment of HIV-1 infection in adults and pediatric patients weighing at least 35kg. Descovy® 200 mg/25 mg tablets \[Gilead\] are blue, rectangular-shaped, and film-coated with GSI debossed on one side and 225 on the other side. The inactive ingredients are croscarmellose sodium, magnesium stearate, and microcrystalline cellulose. The tablets are film-coated with a coating material containing indigo carmine aluminum lake, polyethylene glycol, polyvinyl alcohol, talc, and titanium dioxide.
DRUGtenofovir disoproxil fumarate oral tablet 300mg
Viread® (tenofovir DF, TDF) is a nucleotide analog HIV-1 reverse transcriptase inhibitor and a hepatitis B reverse transcriptase inhibitor FDA-approved for the treatment of HIV-1 infection in combination with other antiretroviral agents and for the treatment of chronic hepatitis B in adults and pediatric patients 2 years of age and older weighing at least 10kg. Viread® 300mg tablets \[Gilead\] are almond-shaped, light blue, film-coated tablets containing 300 mg of tenofovir disoproxil fumarate, which is equivalent to 245 mg of tenofovir disoproxil, are debossed with GILEAD and 4331 on one side and with 300 on the other side. The inactive ingredients in each tablet are croscarmellose sodium, lactose monohydrate, magnesium stearate, microcrystalline cellulose, and pregelatinized starch. Viread® 300mg tablets are coated with Opadry II Y-30-10671-A, which contains FD&C blue #2 aluminum lake, hypromellose 2910, lactose monohydrate, titanium dioxide, and triacetin.
DRUGlamivudine oral tablet 300mg
Lamivudine (Epivir®, 3TC) is a nucleoside analogue reverse transcriptase inhibitor FDA-approved in combination with other antiretroviral agents for the treatment of HIV-1 infection in adults and pediatric patients at least 3 months of age. Lamivudine 300mg tablets \[Apotex Inc.\] are gray, modified diamond-shaped, film-coated, and engraved with LMV 300 on one side and APO on the reverse side. Inactive ingredients are black iron oxide, colloidal silicon dioxide, crospovidone, hydroxypropyl cellulose, hydroxypropyl methylcellulose, lactose anhydrous, magnesium stearate, polyethylene glycol, and titanium dioxide.
Sponsors
National Institute of Allergy and Infectious Diseases (NIAID)
Rhonda Brand
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
NONE
Intervention model description
randomized, open-label
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
1. At least 18 years of age at screening, verified per site standard operating procedure (SOP) 2. Not pregnant or breastfeeding 3. Availability to return for all study visits, barring unforeseen circumstances 4. Willing and able to * communicate in English * provide written informed consent to take part in the study * provide adequate locator information, as defined in site SOP * follow the assigned dosing protocol and maintain an accurate dosing log 5. Must agree not to participate in other concurrent interventional and/or drug trials 6. Understands and agrees to local sexually transmitted infections (STI) reporting requirements 7. HIV-1 seronegative at screening 8. Must be in general good health in the opinion of the investigator 9. For female participants of reproductive potential: Using an effective method of contraception and intending to continue use of an effective method for the duration of study participation and for 8 weeks after the last dose of study drug. Acceptable methods include: * hormonal methods * IUD (intrauterine device) * sterilization of participant or partner
Exclusion criteria
1. Participant reports any of the following at Screening: 1. Has plans to relocate away from the study site area during the period of study participation 2. Pregnant, less than 3 months post-partum, or lactating 3. Intends to become pregnant during the period of study participation 4. History of adverse reaction to study drugs 5. History of osteoporosis or osteopenia 6. PrEP (pre-exposure prophylaxis) or (PEP) post-exposure prophylaxis for HIV exposure within 3 months - prior to screening 7. Participating in another research study involving drugs or medical devices within 3 months or 5 half-lives (if known) prior to enrollment 8. History of gastric bypass 9. History of inflammatory bowel disease 10. Currently taking or anticipation of taking any medications on list of prohibited medications as specified in section 4.10. 11. Unwilling or unable to comply with study procedures, medications and visits 12. Allergies to dyes, excipients and components of drugs 13. Condomless insertive or receptive anal intercourse with more than one partner in the past six months 14. Known HIV-positive sexual partner within the last 6 months 15. History of STI in the last 3 months 2. Has any of the following laboratory abnormalities at Screening: Note: Grade is per Version 2.1 of the Division of AIDS (DAIDS) Toxicity Table 1. Hemoglobin Grade 1 or higher 2. Platelet count Grade 1 or higher 3. White blood cell count Grade 2 or higher 4. Calculated creatinine clearance ≤ 70 mL/minute using the Cockcroft-Gault equation 5. Grade 2 or higher ALT and/or AST (i.e., ≥ 2.5x the site laboratory upper limit of normal \[ULN\]) 6. Total bilirubin Grade 3 or higher 7. Positive for Hepatitis B surface antigen (HBsAg) 8. Confirmed positive for Hepatitis C antibody (HCV Ab) 3. Has any other condition that, in the opinion of the Principal Investigator or designee, would preclude informed consent, make study participation unsafe, complicate interpretation of study outcome data, or otherwise interfere with achieving study objectives
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Maximum concentration (Cmax) of dolutegravir, emtricitabine, lamivudine, tenofovir disoproxil fumarate, tenofovir alafenamide, and metabolites | Pre-dose; 24, 168, and 336 after the first dose; then 24, 48, 72, 98, 168, and 336 hours after the final dose | Cmax of dolutegravir, emtricitabine, lamivudine, tenofovir disoproxil fumarate, tenofovir alafenamide, and metabolites in plasma, whole blood (dried spot), saliva, and urine as measured by liquid chromatography tandem mass spectrometry (LC-MS/MS) |
| Time to maximum concentration (Tmax) of dolutegravir, emtricitabine, lamivudine, tenofovir disoproxil fumarate, tenofovir alafenamide, and metabolites | Pre-dose; 24, 168, and 336 after the first dose; then 24, 48, 72, 98, 168, and 336 hours after the final dose | Tmax of dolutegravir, emtricitabine, lamivudine, tenofovir disoproxil fumarate, tenofovir alafenamide, and metabolites in plasma, whole blood (dried spot), saliva, and urine as measured by liquid chromatography tandem mass spectrometry (LC-MS/MS) |
| Minimum concentration (Cmin) of dolutegravir, emtricitabine, lamivudine, tenofovir disoproxil fumarate, tenofovir alafenamide, and metabolites | Pre-dose; 24, 168, and 336 after the first dose; then 24, 48, 72, 98, 168, and 336 hours after the final dose | Cmin of dolutegravir, emtricitabine, lamivudine, tenofovir disoproxil fumarate, tenofovir alafenamide, and metabolites in plasma, whole blood (dried spot), saliva, and urine as measured by liquid chromatography tandem mass spectrometry (LC-MS/MS) |
| Area under the concentration-time curve (AUC) of dolutegravir, emtricitabine, lamivudine, tenofovir disoproxil fumarate, tenofovir alafenamide, and metabolites | Pre-dose; 24, 168, and 336 after the first dose; then 24, 48, 72, 98, 168, and 336 hours after the final dose | AUC of dolutegravir, emtricitabine, lamivudine, tenofovir disoproxil fumarate, tenofovir alafenamide, and metabolites in plasma, whole blood (dried spot), saliva, and urine as measured by liquid chromatography tandem mass spectrometry (LC-MS/MS) |
| Half-life (t½) of dolutegravir, emtricitabine, lamivudine, tenofovir disoproxil fumarate, and tenofovir alafenamide | Pre-dose; 24, 168, and 336 after the first dose; then 24, 48, 72, 98, 168, and 336 hours after the final dose | Estimated t½ of dolutegravir, emtricitabine, lamivudine, tenofovir disoproxil fumarate, and tenofovir alafenamide as measured in plasma, whole blood (dried spot), saliva, and urine |
Countries
United States
Outcome results
None listed