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NCT03101592: INTERVAL

INTERVAL: Varying Intervals of ART to Improve Outcomes in HIV

Terminated NA Results posted Last updated 27 October 2020
What this trial tests

NA trial testing Three-month ART dispensing in HIV-1-infection in 9,118 participants. Terminated before completion.

Timeline
31 May 2017
Primary endpoint
30 September 2019
10 August 2020

Quick facts

Lead sponsorUniversity of California, Los Angeles
PhaseNA
StatusTerminated
Study typeINTERVENTIONAL
Allocationrandomized
Designparallel
Maskingnone
Primary purposehealth services research
Enrollment9,118
Start date31 May 2017
Primary completion30 September 2019
Estimated completion10 August 2020
Sites2 locations across Malawi, Zambia

Drugs / interventions tested

Conditions studied

Sponsor

University of California, Los Angeles

Who can join

18 and older, any sex, with HIV-1-infection. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

Retention in Care at 12 Months Primary · 12 months

The primary outcome to be studied is whether scripting/dispensing of ART for intervals of six months is non-inferior to three months with respect to retention in care.

GroupValue95% CI
Standard of Care ART Dispensing (SOC)2478
Three-month ART Dispensing (3MD)2356
Six-month ART Dispensing (6MD)2729
Standard of Care ART Dispensing (SOC)60
Three-month ART Dispensing (3MD)66
Six-month ART Dispensing (6MD)58
Standard of Care ART Dispensing (SOC)11
Three-month ART Dispensing (3MD)8
Six-month ART Dispensing (6MD)8
Standard of Care ART Dispensing (SOC)463
Three-month ART Dispensing (3MD)296
Six-month ART Dispensing (6MD)186
Provider Cost Per Patient by Outcome (USD) (Mean, 95% CI) Secondary · 12 months

The secondary outcome to be studied is the cost-effectiveness of scripting/dispensing of ART for intervals of six months compared to three months and SOC. Cost-effectiveness will be estimated as the average cost per successful outcome (patient retained at 12 months).

Achieved primary outcome
GroupValue95% CI
Malawi: Standard of Care (SOC)89.0087.90 – 91.90
Malawi: 3 Month Dispensing (3MD)88.4086.44 – 90.36
Malawi: 6 Month Dispensing (6MD)85.9283.97 – 87.89
Zambia: Standard of Care (SOC)143.60141.68 – 145.60
Zambia: 3 Month Dispensing (3MD)141.60139.64 – 143.56
Zambia: 6 Month Dispensing (6MD)131.13129.20 – 133.12
Did not achieve primary outcome
GroupValue95% CI
Malawi: Standard of Care (SOC)63.4061.42 – 65.37
Malawi: 3 Month Dispensing (3MD)62.3060.35 – 64.30
Malawi: 6 Month Dispensing (6MD)66.1064.12 – 68.09
Zambia: Standard of Care (SOC)99.0097.04 – 100.98
Zambia: 3 Month Dispensing (3MD)99.0097.04 – 100.98
Zambia: 6 Month Dispensing (6MD)99.0096.98 – 100.92
All patients
GroupValue95% CI
Malawi: Standard of Care (SOC)86.5084.50 – 88.42
Malawi: 3 Month Dispensing (3MD)86.0083.99 – 87.91
Malawi: 6 Month Dispensing (6MD)84.6082.62 – 86.54
Zambia: Standard of Care (SOC)132.00130.43 – 134.35
Zambia: 3 Month Dispensing (3MD)134.00132.09 – 136.02
Zambia: 6 Month Dispensing (6MD)128.00125.64 – 129.57

Sponsor's own description

This is an unblinded cluster-randomized study to evaluate the effectiveness of two strategies for scripting/dispensing of antiretroviral therapy (ART) on retention, virologic suppression, and cost compared to the standard of care. The study will be conducted in Malawi and Zambia among approximately 8,200 HIV-1-infected adults (18 years or older) who are stable on ART. Clusters will be randomized to one of three study arms: (1) standard of care (SOC) ART scripting (varies by country, region, clinic, and/or provider), (2) three-month ART scripting, and (3) six-month ART scripting. 30 clusters will be selected for the study, 15 in Malawi and 15 in Zambia, and will be randomized to a study arm.

Publications & conference data

3 peer-reviewed publications reference this trial (live from Europe PMC):

  1. Multimonth dispensing of up to 6 months of antiretroviral therapy in Malawi and Zambia (INTERVAL): a cluster-randomised, non-blinded, non-inferiority trial.
    Hoffman RM, Moyo C, Balakasi KT, Siwale Z, et al · · 2021 · cited 63× · PMID 33865471 · DOI 10.1016/s2214-109x(21)00039-5
  2. Provider experiences with three- and six-month antiretroviral therapy dispensing for stable clients in Zambia.
    Phiri K, McBride K, Siwale Z, Hubbard J, et al · · 2021 · cited 24× · PMID 32363910 · DOI 10.1080/09540121.2020.1755010
  3. Varying intervals of antiretroviral medication dispensing to improve outcomes for HIV patients (The INTERVAL Study): study protocol for a randomized controlled trial.
    Hoffman R, Bardon A, Rosen S, Fox M, et al · · 2017 · cited 11× · PMID 29029644 · DOI 10.1186/s13063-017-2177-z

Verify or expand the search:

Other recruiting trials for HIV-1-infection

Currently open trials in the same condition.

Other University of California, Los Angeles trials

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Data sources for this page

Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT03101592.

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing