- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05333679
Urine Tenofovir Point-of-care Test to Identify Patients in Need of ART Adherence Support (UTRA Study)
ART is given to people living with HIV in order to suppress the virus, resulting in improved health for the individual and decreased transmission of the virus to others. Success of ART is dependent on adherence. Currently, adherence is assessed by asking patients directly and then confirming with a viral load test, which is expensive and is often only done when the viral load is already raised. Therefore there is a need to find a method to detect problems with adherence early before the viral load rises.
A urine-based test was recently developed, called UTRA (urine tenofovir rapid assay). This test can give clinic staff immediate results about a person's adherence to the antiretroviral medication Tenofovir (TDF). The study will compare the results of this urine test to drug levels found in blood, self-reported adherence and pharmacy collection records to see if this test can be used as part of routine care in ART clinics. If the test is effective it would allow clinic staff to identify people with adherence difficulties early and give them the necessary support before their viral load rises.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
This is a randomised study, recruiting 200 people taking TDF-based ART. Participants will be randomised 1:1 to intervention versus standard enhanced adherence counselling. Intervention participants will receive an adherence support package informed by feedback from the urine-based test. The investigators will assess the impact of the adherence test on VL suppression rates in each arm (without necessitating a regimen switch) at 12 months after enrolment. Enrolling participants with adherence challenges increases efficiency and mirrors the population requiring adherence support in our setting.
The UTRA device used for this study has received a FDA Non-Significant Risk (NSR) designation and is IDE exempt.
FEASIBILITY:
The investigators will track retention in the study among participants in each arm, missed visits, and the number of urine assessments performed in the intervention arm.
ACCEPTABILITY:
All participants enrolled will also complete a standardised questionnaire about the acceptability of the adherence support they received. This measure of acceptability will be assessed as a secondary outcome by arm, along with socio-demographics profiles associated with low/high acceptability described within arm.
QUALITATIVE PROCEDURES:
- Participant in-depth interviews: Qualitative data will include in-depth interviews of participants (n~20; ~3-4 interviews with each participant over 6-9 months of their treatment) using semi-structured guides conducted by experienced socio-behavioural scientists. The semi-structured interview guide will elicit feelings about the urine adherence metric and counseling messages, concerns regarding privacy, advantages/disadvantages of receiving such results, and the likely impact of this monitoring test on sustained adherence to ART or just on short-term adherence. Interviews will be conducted in participants' preferred language.
- Health care worker interviews: The investigators will additionally assess the feasibility of the intervention by interviewing health care providers, who will be administering the UTRA test at the clinical point of care in the future. The study will examine provider perceptions of the assay at the end of the study using in-depth interviews (n~10), assessing perceived usefulness, complexity to use, stigma/social harm, and benefits. These interviews will also elicit barriers and facilitators to delivery of the urine assay-informed counseling messages.
Study Type
Enrollment (Estimated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Monica Gandhi, MD
- Phone Number: 127 415 476 4082
- Email: Monica.Gandhi@ucsf.edu
Study Contact Backup
- Name: Purba Chatterjee, MSc
- Phone Number: 415 476 6714
- Email: Purba.Chatterjee@ucsf.edu
Study Locations
-
-
Western Cape
-
Cape Town, Western Cape, South Africa, 7925
- Recruiting
- Desmond Tutu Health Foundation, University of Cape Town
-
Contact:
- Catherine Orrell, MBChB, PhD
- Phone Number: (021) 406 6958
- Email: Catherine.orrell@hiv-research.org.za
-
Contact:
- Zukiswa Nkantsu
- Phone Number: (021) 007 2275/6
- Email: Zukiswa.Nkantsu@hiv-research.org.za
-
Principal Investigator:
- Catherine Orrell, MBChB, PhD
-
Sub-Investigator:
- Yashna Singh, MBBS
-
Sub-Investigator:
- Lauren Jennings, MBChB
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- ≥18 years old
- Willing and able to provide written informed consent
- HIV-infected, receiving or (re-)starting a tenofovir-based ART regimen
- Current ART regimen includes at least one drug with a high genetic barrier to resistance e.g. dolutegravir, atazanavir/ritonavir, darunavir/ritonavir or lopinavir/ritonavir.
- Any previous raised viral load >50 copies/ml (after ART initiation).
- Willing and able to comply with laboratory tests and other study procedures
Exclusion Criteria:
- Not willing or able to provide informed consent in any of the languages provided
- Not receiving a tenofovir-based ART regimen
- Any other clinical condition that in the opinion of an investigator puts the patient at increased risk if participating in the study.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Intervention
POC adherence testing by a urine TFV assay with feedback
|
Collect urine on intervention participants and screen for presence of TFV.
Feedback will be provided to the participant based on the UTRA results on their adherence with provision of standard adherence counseling.
|
No Intervention: Standard of Care
Standard enhanced adherence counselling, SA Department of Health, March 2020
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Proportion of participants in each arm achieving viral suppression to <50 copies/ml
Time Frame: 12 months
|
Assess suppression rates (VL< 50 copies/mL) in both study arms using an intention-to-treat analysis.
Plasma will be stored an enrolment, month 6 and month 12 for viral load assay completion after the study.
Samples are assayed either with the Alinity m HIV-1 assay (Abbott Laboratories.
Abbott Park, Illinois, U.S.A.); lower limit of detection (LLD) 10 copies/mL or the COBAS® AmpliPrep/COBAS® TaqMan® HIV-1 Test, v2.0 (Roche Diagnostics, Basel, Switzerland); LLD 20 copies/mL.
Whole blood will be centrifuged and plasma then tested on the automated analyzer according to national standard operating procedures
|
12 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Retention in care
Time Frame: 12 months
|
Follow up visits will occur in 12-week increments post-enrolment: at month 3, month 6, month 9 and month 12; and will be synchronized wherever possible with routine clinic visits.
Visit windows will be continuous, with each window extending to 6 weeks before and 6 weeks after the visit target date.
A visit will be considered missed if the participant does not attend during the 12-week visit window
|
12 months
|
Viral suppression (<50 copies/mL)
Time Frame: 6 months
|
Assess suppression rates (VL< 50 copies/mL) in both study arms using an intention-to-treat analysis.
Samples are assayed either with the Alinity m HIV-1 assay (Abbott Laboratories.
Abbott Park, Illinois, U.S.A.); lower limit of detection (LLD) 10 copies/mL or the COBAS® AmpliPrep/COBAS® TaqMan® HIV-1 Test, v2.0 (Roche Diagnostics, Basel, Switzerland); LLD 20 copies/mL.
Whole blood will be centrifuged and plasma then tested on the automated analyzer according to national standard operating procedures
|
6 months
|
The proportion of participants indicating "strongly agree" or "agree" averaged across 10 items, each using a five-point Likert scale to measure aspects of the adherence support intervention (i.e., by arm: UTRA-informed or standard of care)
Time Frame: 12 months
|
The proportion of participants indicating "strongly agree" or "agree" averaged across 10 items, each item using a five-point Likert scale to measure aspects of acceptability of the adherence support intervention (i.e., by arm: UTRA-informed or standard of care), at month 12. Responses to the Likert scale range from "Strongly agree" to "Strongly disagree".
Aspects of acceptability include domains on: support from health workers, time given by health workers to discuss the patients' treatment, patient perceptions of feeling informed about their adherence, feelings of surveillance (-vely scored), and self-satisfactions with adherence.
|
12 months
|
Collaborators and Investigators
Investigators
- Principal Investigator: Monica Gandhi, MD, University of California, San Francisco
Publications and helpful links
General Publications
- Grant RM, Lama JR, Anderson PL, McMahan V, Liu AY, Vargas L, Goicochea P, Casapia M, Guanira-Carranza JV, Ramirez-Cardich ME, Montoya-Herrera O, Fernandez T, Veloso VG, Buchbinder SP, Chariyalertsak S, Schechter M, Bekker LG, Mayer KH, Kallas EG, Amico KR, Mulligan K, Bushman LR, Hance RJ, Ganoza C, Defechereux P, Postle B, Wang F, McConnell JJ, Zheng JH, Lee J, Rooney JF, Jaffe HS, Martinez AI, Burns DN, Glidden DV; iPrEx Study Team. Preexposure chemoprophylaxis for HIV prevention in men who have sex with men. N Engl J Med. 2010 Dec 30;363(27):2587-99. doi: 10.1056/NEJMoa1011205. Epub 2010 Nov 23.
- Donnell D, Baeten JM, Bumpus NN, Brantley J, Bangsberg DR, Haberer JE, Mujugira A, Mugo N, Ndase P, Hendrix C, Celum C. HIV protective efficacy and correlates of tenofovir blood concentrations in a clinical trial of PrEP for HIV prevention. J Acquir Immune Defic Syndr. 2014 Jul 1;66(3):340-8. doi: 10.1097/QAI.0000000000000172.
- Cohen MS, Chen YQ, McCauley M, Gamble T, Hosseinipour MC, Kumarasamy N, Hakim JG, Kumwenda J, Grinsztejn B, Pilotto JH, Godbole SV, Chariyalertsak S, Santos BR, Mayer KH, Hoffman IF, Eshleman SH, Piwowar-Manning E, Cottle L, Zhang XC, Makhema J, Mills LA, Panchia R, Faesen S, Eron J, Gallant J, Havlir D, Swindells S, Elharrar V, Burns D, Taha TE, Nielsen-Saines K, Celentano DD, Essex M, Hudelson SE, Redd AD, Fleming TR; HPTN 052 Study Team. Antiretroviral Therapy for the Prevention of HIV-1 Transmission. N Engl J Med. 2016 Sep 1;375(9):830-9. doi: 10.1056/NEJMoa1600693. Epub 2016 Jul 18.
- Cohen MS, Chen YQ, McCauley M, Gamble T, Hosseinipour MC, Kumarasamy N, Hakim JG, Kumwenda J, Grinsztejn B, Pilotto JH, Godbole SV, Mehendale S, Chariyalertsak S, Santos BR, Mayer KH, Hoffman IF, Eshleman SH, Piwowar-Manning E, Wang L, Makhema J, Mills LA, de Bruyn G, Sanne I, Eron J, Gallant J, Havlir D, Swindells S, Ribaudo H, Elharrar V, Burns D, Taha TE, Nielsen-Saines K, Celentano D, Essex M, Fleming TR; HPTN 052 Study Team. Prevention of HIV-1 infection with early antiretroviral therapy. N Engl J Med. 2011 Aug 11;365(6):493-505. doi: 10.1056/NEJMoa1105243. Epub 2011 Jul 18.
- Rodger AJ, Cambiano V, Bruun T, Vernazza P, Collins S, Degen O, Corbelli GM, Estrada V, Geretti AM, Beloukas A, Raben D, Coll P, Antinori A, Nwokolo N, Rieger A, Prins JM, Blaxhult A, Weber R, Van Eeden A, Brockmeyer NH, Clarke A, Del Romero Guerrero J, Raffi F, Bogner JR, Wandeler G, Gerstoft J, Gutierrez F, Brinkman K, Kitchen M, Ostergaard L, Leon A, Ristola M, Jessen H, Stellbrink HJ, Phillips AN, Lundgren J; PARTNER Study Group. Risk of HIV transmission through condomless sex in serodifferent gay couples with the HIV-positive partner taking suppressive antiretroviral therapy (PARTNER): final results of a multicentre, prospective, observational study. Lancet. 2019 Jun 15;393(10189):2428-2438. doi: 10.1016/S0140-6736(19)30418-0. Epub 2019 May 2.
- Rodger AJ, Cambiano V, Bruun T, Vernazza P, Collins S, van Lunzen J, Corbelli GM, Estrada V, Geretti AM, Beloukas A, Asboe D, Viciana P, Gutierrez F, Clotet B, Pradier C, Gerstoft J, Weber R, Westling K, Wandeler G, Prins JM, Rieger A, Stoeckle M, Kummerle T, Bini T, Ammassari A, Gilson R, Krznaric I, Ristola M, Zangerle R, Handberg P, Antela A, Allan S, Phillips AN, Lundgren J; PARTNER Study Group. Sexual Activity Without Condoms and Risk of HIV Transmission in Serodifferent Couples When the HIV-Positive Partner Is Using Suppressive Antiretroviral Therapy. JAMA. 2016 Jul 12;316(2):171-81. doi: 10.1001/jama.2016.5148. Erratum In: JAMA. 2016 Aug 9;316(6):667. JAMA. 2016 Nov 15;316(19):2048.
- Herzer M, Ramey C, Rohan J, Cortina S. Incorporating electronic monitoring feedback into clinical care: a novel and promising adherence promotion approach. Clin Child Psychol Psychiatry. 2012 Oct;17(4):505-18. doi: 10.1177/1359104511421103. Epub 2011 Sep 25.
- de Necker M, de Beer JC, Stander MP, Connell CD, Mwai D. Economic and public health impact of decentralized HIV viral load testing: A modelling study in Kenya. PLoS One. 2019 Feb 27;14(2):e0212972. doi: 10.1371/journal.pone.0212972. eCollection 2019.
- van Zyl GU, van Mens TE, McIlleron H, Zeier M, Nachega JB, Decloedt E, Malavazzi C, Smith P, Huang Y, van der Merwe L, Gandhi M, Maartens G. Low lopinavir plasma or hair concentrations explain second-line protease inhibitor failures in a resource-limited setting. J Acquir Immune Defic Syndr. 2011 Apr;56(4):333-9. doi: 10.1097/QAI.0b013e31820dc0cc.
- Prasitsuebsai W, Kerr SJ, Truong KH, Ananworanich J, Do VC, Nguyen LV, Kurniati N, Kosalaraksa P, Sudjaritruk T, Chokephaibulkit K, Thammajaruk N, Singtoroj T, Teeraananchai S, Horng H, Bacchetti P, Gandhi M, Sohn AH. Using Lopinavir Concentrations in Hair Samples to Assess Treatment Outcomes on Second-Line Regimens Among Asian Children. AIDS Res Hum Retroviruses. 2015 Oct;31(10):1009-14. doi: 10.1089/AID.2015.0111. Epub 2015 Aug 26.
- Murnane PM, Bacchetti P, Currier JS, Brummel S, Okochi H, Phung N, Louie A, Kuncze K, Hoffman RM, Nematadzira T, Soko DK, Owor M, Saidi F, Flynn PM, Fowler MG, Gandhi M. Tenofovir concentrations in hair strongly predict virologic suppression in breastfeeding women. AIDS. 2019 Aug 1;33(10):1657-1662. doi: 10.1097/QAD.0000000000002237.
- Gandhi M, Bacchetti P, Ofokotun I, Jin C, Ribaudo HJ, Haas DW, Sheth AN, Horng H, Phung N, Kuncze K, Okochi H, Landovitz RJ, Lennox J, Currier JS; AIDS Clinical Trials Group (ACTG) 5257 Study Team. Antiretroviral Concentrations in Hair Strongly Predict Virologic Response in a Large Human Immunodeficiency Virus Treatment-naive Clinical Trial. Clin Infect Dis. 2019 Mar 5;68(6):1044-1047. doi: 10.1093/cid/ciy764.
- Gandhi M, Ameli N, Bacchetti P, Gange SJ, Anastos K, Levine A, Hyman CL, Cohen M, Young M, Huang Y, Greenblatt RM; Women's Interagency HIV Study (WIHS). Protease inhibitor levels in hair strongly predict virologic response to treatment. AIDS. 2009 Feb 20;23(4):471-8. doi: 10.1097/QAD.0b013e328325a4a9.
- Gandhi M, Ameli N, Bacchetti P, Anastos K, Gange SJ, Minkoff H, Young M, Milam J, Cohen MH, Sharp GB, Huang Y, Greenblatt RM. Atazanavir concentration in hair is the strongest predictor of outcomes on antiretroviral therapy. Clin Infect Dis. 2011 May;52(10):1267-75. doi: 10.1093/cid/cir131.
- Cohan D, Natureeba P, Koss CA, Plenty A, Luwedde F, Mwesigwa J, Ades V, Charlebois ED, Gandhi M, Clark TD, Nzarubara B, Achan J, Ruel T, Kamya MR, Havlir DV. Efficacy and safety of lopinavir/ritonavir versus efavirenz-based antiretroviral therapy in HIV-infected pregnant Ugandan women. AIDS. 2015 Jan 14;29(2):183-91. doi: 10.1097/QAD.0000000000000531.
- Koss CA, Natureeba P, Mwesigwa J, Cohan D, Nzarubara B, Bacchetti P, Horng H, Clark TD, Plenty A, Ruel TD, Achan J, Charlebois ED, Kamya MR, Havlir DV, Gandhi M. Hair concentrations of antiretrovirals predict viral suppression in HIV-infected pregnant and breastfeeding Ugandan women. AIDS. 2015 Apr 24;29(7):825-30. doi: 10.1097/QAD.0000000000000619. Erratum In: AIDS. 2015 Nov;29(17):2369.
- Chawana TD, Gandhi M, Nathoo K, Ngara B, Louie A, Horng H, Katzenstein D, Metcalfe J, Nhachi CFB; Adolescent Treatment Failure (ATF) study team. Defining a Cutoff for Atazanavir in Hair Samples Associated With Virological Failure Among Adolescents Failing Second-Line Antiretroviral Treatment. J Acquir Immune Defic Syndr. 2017 Sep 1;76(1):55-59. doi: 10.1097/QAI.0000000000001452.
- Pintye J, Bacchetti P, Teeraananchai S, Kerr S, Prasitsuebsai W, Singtoroj T, Kuncze K, Louie A, Koss CA, Jin C, Phung N, Horng H, Sohn AH, Gandhi M. Brief Report: Lopinavir Hair Concentrations Are the Strongest Predictor of Viremia in HIV-Infected Asian Children and Adolescents on Second-Line Antiretroviral Therapy. J Acquir Immune Defic Syndr. 2017 Dec 1;76(4):367-371. doi: 10.1097/QAI.0000000000001527.
- Baxi SM, Greenblatt RM, Bacchetti P, Jin C, French AL, Keller MJ, Augenbraun MH, Gange SJ, Liu C, Mack WJ, Gandhi M; Women's Interagency HIV Study (WIHS). Nevirapine Concentration in Hair Samples Is a Strong Predictor of Virologic Suppression in a Prospective Cohort of HIV-Infected Patients. PLoS One. 2015 Jun 8;10(6):e0129100. doi: 10.1371/journal.pone.0129100. eCollection 2015.
- Tabb ZJ, Mmbaga BT, Gandhi M, Louie A, Kuncze K, Okochi H, Shayo AM, Turner EL, Cunningham CK, Dow DE. Antiretroviral drug concentrations in hair are associated with virologic outcomes among young people living with HIV in Tanzania. AIDS. 2018 Jun 1;32(9):1115-1123. doi: 10.1097/QAD.0000000000001788.
- Marrazzo JM, Ramjee G, Richardson BA, Gomez K, Mgodi N, Nair G, Palanee T, Nakabiito C, van der Straten A, Noguchi L, Hendrix CW, Dai JY, Ganesh S, Mkhize B, Taljaard M, Parikh UM, Piper J, Masse B, Grossman C, Rooney J, Schwartz JL, Watts H, Marzinke MA, Hillier SL, McGowan IM, Chirenje ZM; VOICE Study Team. Tenofovir-based preexposure prophylaxis for HIV infection among African women. N Engl J Med. 2015 Feb 5;372(6):509-18. doi: 10.1056/NEJMoa1402269.
- Gandhi M, Bacchetti P, Rodrigues WC, Spinelli M, Koss CA, Drain PK, Baeten JM, Mugo NR, Ngure K, Benet LZ, Okochi H, Wang G, Vincent M. Development and Validation of an Immunoassay for Tenofovir in Urine as a Real-Time Metric of Antiretroviral Adherence. EClinicalMedicine. 2018 Aug-Sep;2-3:22-28. doi: 10.1016/j.eclinm.2018.08.004. Epub 2018 Aug 31.
- Castillo-Mancilla JR, Zheng JH, Rower JE, Meditz A, Gardner EM, Predhomme J, Fernandez C, Langness J, Kiser JJ, Bushman LR, Anderson PL. Tenofovir, emtricitabine, and tenofovir diphosphate in dried blood spots for determining recent and cumulative drug exposure. AIDS Res Hum Retroviruses. 2013 Feb;29(2):384-90. doi: 10.1089/AID.2012.0089. Epub 2012 Oct 10.
- Gandhi M, Greenblatt RM. Hair it is: the long and short of monitoring antiretroviral treatment. Ann Intern Med. 2002 Oct 15;137(8):696-7. doi: 10.7326/0003-4819-137-8-200210150-00016. No abstract available.
- DePriest AZ, Black DL, Robert TA. Immunoassay in healthcare testing applications. J Opioid Manag. 2015 Jan-Feb;11(1):13-25. doi: 10.5055/jom.2015.0248.
- Pecoraro V, Banfi G, Germagnoli L, Trenti T. A systematic evaluation of immunoassay point-of-care testing to define impact on patients' outcomes. Ann Clin Biochem. 2017 Jul;54(4):420-431. doi: 10.1177/0004563217694377. Epub 2017 May 15.
- Zash R, Makhema J, Shapiro RL. Neural-Tube Defects with Dolutegravir Treatment from the Time of Conception. N Engl J Med. 2018 Sep 6;379(10):979-981. doi: 10.1056/NEJMc1807653. Epub 2018 Jul 24. No abstract available.
- Keene CM, Griesel R, Zhao Y, Gcwabe Z, Sayed K, Hill A, Cassidy T, Ngwenya O, Jackson A, van Zyl G, Schutz C, Goliath R, Flowers T, Goemaere E, Wiesner L, Simmons B, Maartens G, Meintjes G. Virologic efficacy of tenofovir, lamivudine and dolutegravir as second-line antiretroviral therapy in adults failing a tenofovir-based first-line regimen. AIDS. 2021 Jul 15;35(9):1423-1432. doi: 10.1097/QAD.0000000000002936.
- Gandhi M, Bacchetti P, Spinelli MA, Okochi H, Baeten JM, Siriprakaisil O, Klinbuayaem V, Rodrigues WC, Wang G, Vincent M, Cressey TR, Drain PK. Brief Report: Validation of a Urine Tenofovir Immunoassay for Adherence Monitoring to PrEP and ART and Establishing the Cutoff for a Point-of-Care Test. J Acquir Immune Defic Syndr. 2019 May 1;81(1):72-77. doi: 10.1097/QAI.0000000000001971.
- Cressey TR, Siriprakaisil O, Klinbuayaem V, Quame-Amaglo J, Kubiak RW, Sukrakanchana PO, Than-In-At K, Baeten J, Sirirungsi W, Cressey R, Drain PK. A randomized clinical pharmacokinetic trial of Tenofovir in blood, plasma and urine in adults with perfect, moderate and low PrEP adherence: the TARGET study. BMC Infect Dis. 2017 Jul 14;17(1):496. doi: 10.1186/s12879-017-2593-4.
- Koenig HC, Mounzer K, Daughtridge GW, Sloan CE, Lalley-Chareczko L, Moorthy GS, Conyngham SC, Zuppa AF, Montaner LJ, Tebas P. Urine assay for tenofovir to monitor adherence in real time to tenofovir disoproxil fumarate/emtricitabine as pre-exposure prophylaxis. HIV Med. 2017 Jul;18(6):412-418. doi: 10.1111/hiv.12518. Epub 2017 Apr 26.
- Hadland SE, Levy S. Objective Testing: Urine and Other Drug Tests. Child Adolesc Psychiatr Clin N Am. 2016 Jul;25(3):549-65. doi: 10.1016/j.chc.2016.02.005. Epub 2016 Mar 30.
- Spinelli MA, Glidden DV, Rodrigues WC, Wang G, Vincent M, Okochi H, Kuncze K, Mehrotra M, Defechereux P, Buchbinder SP, Grant RM, Gandhi M. Low tenofovir level in urine by a novel immunoassay is associated with seroconversion in a preexposure prophylaxis demonstration project. AIDS. 2019 Apr 1;33(5):867-872. doi: 10.1097/QAD.0000000000002135.
- Parienti JJ, Das-Douglas M, Massari V, Guzman D, Deeks SG, Verdon R, Bangsberg DR. Not all missed doses are the same: sustained NNRTI treatment interruptions predict HIV rebound at low-to-moderate adherence levels. PLoS One. 2008 Jul 30;3(7):e2783. doi: 10.1371/journal.pone.0002783.
- Parienti JJ, Ragland K, Lucht F, de la Blanchardiere A, Dargere S, Yazdanpanah Y, Dutheil JJ, Perre P, Verdon R, Bangsberg DR; ESPOIR and REACH study groups. Average adherence to boosted protease inhibitor therapy, rather than the pattern of missed doses, as a predictor of HIV RNA replication. Clin Infect Dis. 2010 Apr 15;50(8):1192-7. doi: 10.1086/651419.
- Gandhi M, Glidden DV, Liu A, Anderson PL, Horng H, Defechereux P, Guanira JV, Grinsztejn B, Chariyalertsak S, Bekker LG, Grant RM; iPrEx Study Team. Strong Correlation Between Concentrations of Tenofovir (TFV) Emtricitabine (FTC) in Hair and TFV Diphosphate and FTC Triphosphate in Dried Blood Spots in the iPrEx Open Label Extension: Implications for Pre-exposure Prophylaxis Adherence Monitoring. J Infect Dis. 2015 Nov 1;212(9):1402-6. doi: 10.1093/infdis/jiv239. Epub 2015 Apr 20.
- Gandhi M, Murnane PM, Bacchetti P, Elion R, Kolber MA, Cohen SE, Horng H, Louie A, Kuncze K, Koss CA, Anderson PL, Buchbinder S, Liu A. Hair levels of preexposure prophylaxis drugs measure adherence and are associated with renal decline among men/transwomen. AIDS. 2017 Oct 23;31(16):2245-2251. doi: 10.1097/QAD.0000000000001615.
- Koss CA, Hosek SG, Bacchetti P, Anderson PL, Liu AY, Horng H, Benet LZ, Kuncze K, Louie A, Saberi P, Wilson CM, Gandhi M. Comparison of Measures of Adherence to Human Immunodeficiency Virus Preexposure Prophylaxis Among Adolescent and Young Men Who Have Sex With Men in the United States. Clin Infect Dis. 2018 Jan 6;66(2):213-219. doi: 10.1093/cid/cix755.
- Van Damme L, Corneli A, Ahmed K, Agot K, Lombaard J, Kapiga S, Malahleha M, Owino F, Manongi R, Onyango J, Temu L, Monedi MC, Mak'Oketch P, Makanda M, Reblin I, Makatu SE, Saylor L, Kiernan H, Kirkendale S, Wong C, Grant R, Kashuba A, Nanda K, Mandala J, Fransen K, Deese J, Crucitti T, Mastro TD, Taylor D; FEM-PrEP Study Group. Preexposure prophylaxis for HIV infection among African women. N Engl J Med. 2012 Aug 2;367(5):411-22. doi: 10.1056/NEJMoa1202614. Epub 2012 Jul 11.
- Van Damme L, Corneli A. Antiretroviral preexposure prophylaxis for HIV prevention. N Engl J Med. 2013 Jan 3;368(1):84. doi: 10.1056/NEJMc1210464. No abstract available.
- Blumenthal J, Haubrich R. Pre-exposure prophylaxis for HIV infection: how antiretroviral pharmacology helps to monitor and improve adherence. Expert Opin Pharmacother. 2013 Sep;14(13):1777-85. doi: 10.1517/14656566.2013.812072. Epub 2013 Jun 26.
- Musinguzi N, Muganzi CD, Boum Y 2nd, Ronald A, Marzinke MA, Hendrix CW, Celum C, Baeten JM, Bangsberg DR, Haberer JE; Partners PrEP Ancillary Adherence Study Team. Comparison of subjective and objective adherence measures for preexposure prophylaxis against HIV infection among serodiscordant couples in East Africa. AIDS. 2016 Apr 24;30(7):1121-9. doi: 10.1097/QAD.0000000000001024.
- Thigpen MC, Kebaabetswe PM, Paxton LA, Smith DK, Rose CE, Segolodi TM, Henderson FL, Pathak SR, Soud FA, Chillag KL, Mutanhaurwa R, Chirwa LI, Kasonde M, Abebe D, Buliva E, Gvetadze RJ, Johnson S, Sukalac T, Thomas VT, Hart C, Johnson JA, Malotte CK, Hendrix CW, Brooks JT; TDF2 Study Group. Antiretroviral preexposure prophylaxis for heterosexual HIV transmission in Botswana. N Engl J Med. 2012 Aug 2;367(5):423-34. doi: 10.1056/NEJMoa1110711. Epub 2012 Jul 11.
- Choopanya K, Martin M, Suntharasamai P, Sangkum U, Mock PA, Leethochawalit M, Chiamwongpaet S, Kitisin P, Natrujirote P, Kittimunkong S, Chuachoowong R, Gvetadze RJ, McNicholl JM, Paxton LA, Curlin ME, Hendrix CW, Vanichseni S; Bangkok Tenofovir Study Group. Antiretroviral prophylaxis for HIV infection in injecting drug users in Bangkok, Thailand (the Bangkok Tenofovir Study): a randomised, double-blind, placebo-controlled phase 3 trial. Lancet. 2013 Jun 15;381(9883):2083-90. doi: 10.1016/S0140-6736(13)61127-7. Epub 2013 Jun 13.
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Study record dates
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Primary Completion (Estimated)
Study Completion (Estimated)
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First Submitted That Met QC Criteria
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- AI152119
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IPD Plan Description
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- STUDY_PROTOCOL
- SAP
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- ANALYTIC_CODE
- CSR
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product manufactured in and exported from the U.S.
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