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Impact of Immediate Versus South African Recommendations Guided ART Initiation on HIV Incidence

A Cluster Randomised Trial Comparing the Impact of Immediate Versus South African Recommendations Guided ART Initiation on HIV Incidence. The ARNS 12249 TasP (Treatment as Prevention) Trial in Hlabisa Sub-district, KwaZulu-Natal, South Africa.

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01509508
Acronym
TasP
Enrollment
28153
Registered
2012-01-13
Start date
2012-03-01
Completion date
2016-06-01
Last updated
2026-04-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

HIV Infection

Keywords

HIV, Prevention, Treatment, South Africa

Brief summary

This trial is evaluating a public health intervention strategy trial which aims to reduce the incidence of HIV at a population-level. The proposed strategy is a two steps process: * Extensive HIV counselling and testing, and comprehensive prevention programme among a target population * Immediate ART initiation after HIV diagnosis, irrespective of CD4 count criteria. The underlaying trial hypothesis is that HIV testing followed by immediate ART initiation of all HIV-infected individuals will prevent onward transmission and reduce HIV incidence in the population. This is a cluster randomised controlled trial with a total of 22 communities used as the units for randomisation. Enrolment of a population of 22 000 individuals among which 4 400 are expected to be HIV-Infected.

Detailed description

The trial objective is to estimate the effect of ART initiated immediately after HIV diagnosis on the reduction in incidence of new HIV infections in the general population. It will be conducted in two phases: * First phase: aiming to evaluate the feasibility and acceptability of extensive HIV testing and early ARV treatment initiation on a subset of the target population (Hlabisa sub-district in KwaZulu Natal, South Africa); completion on February 2014. * Second phase: full implementation of the trial in the target population from May 2014. The proposed intervention has two components : * Component 1 "Test": HIV counselling and testing, and comprehensive prevention programme among the entire target population * Component 2 "Treat": ART treatment initiation for HIV infected individuals following two strategies * control group: ART initiation when eligible for treatment as per WHO guidelines * intervention group: immediate ART initiation regardless of immunological and clinical staging

Interventions

DRUGImmediate ARV treatment initiation with TDF/FTC/EFV

All HIV-infected adults will be offered ART regardless of their immunological and clinical staging. The first line regimen proposed will be Atripla (R), a fixed dose combination containing tenofovir disoproxil (245 mg)/emtricitabine (200 mg)/efavirenz (600 mg)(FTC/TDF/EFV). The dosing will be 1 tablet OD.

OTHERSouth African recommendation guided ARV (TDF/FTC/EFV) initiation

HIV-infected adult participants will be eligible for ART as per the South African guidelines (August 2011) if: * CD4 count ≤ 350 cells/mm3 irrespective of clinical symptoms * WHO clinical stage 3 or 4 irrespective of CD4 count * MDR or XDR TB The first line regimen proposed will be Atripla (R), a fixes dose combination containing tenofovir disoproxil (245 mg)/emtricitabine (200 mg)/efavirenz (600 mg)(TDF/FTC/EFV). The dosing will be 1 tablet OD.

Sponsors

ANRS, Emerging Infectious Diseases
Lead SponsorOTHER_GOV
Africa Centre For Health and Population Studies
CollaboratorOTHER
University of KwaZulu
CollaboratorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
16 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* Aged 16 and more * Member of a household in the designated cluster within the Hlabisa sub-district of KwaZulu Natal in South Africa * Able and willing to give written informed consent for trial participation and/or HIV counselling and testing

Design outcomes

Primary

MeasureTime frameDescription
Uptake of initial and repeat HIV counselling and testing (Feasibility phase)14 monthsPercentage of the target population tested for HIV
Uptake of ARV treatment among HIV-infected individuals (Feasibility phase)14 monthsPercentage of HIV-infected patients followed-up in the trial clinics receiving ARV treatment when eligible
HIV infection incidence4 years after enrolment initiationSerology will be done on Dry Blood Spot collected during repeated surveys

Secondary

MeasureTime frameDescription
Sexual partnershipsRepeated measure every 6 months during follow-upPercentage of participants reporting a certain number of sexual partnerships in the last 12 months
Safe sex and condom useRepeated measure every 6 months during follow-upPercentage of participants using a male condom with their partner during the last sexual intercourse
Quality of lifeRepeated measure every 6 months during follow-up* the EQ-5D scale among the whole sample * the Patient Reported Outcomes Quality Of Life specific to HIV (PROQOL-HIV) instrument and the HIV/AIDS stigma instrument for PLWHA (HASI-P) tool among HIV-infected participants
Health care use and health care expendituresRepeated measure every 6 months during follow-upPercentage of participants reporting health care visits (primary care centre, pharmacy, hospitalisation) in the past four weeks and cost incurred
Stigma at community levelRepeated measure every 6 months during follow-upPercentage of participants agreeing that people in the community do not blame people for having HIV Percentage of participants agreeing that people in the community avoid people with HIV
Adherence to ARTRepeated measure every 6 months during follow-upMeasured three-monthly using a visual analogue scale, pill identification test and pill count
RetentionRepeated measure every 6 months during follow-upProportion of HIV-infected participants still under active follow-up in the trial at key timepoints

Countries

South Africa

Contacts

STUDY_CHAIRFrançois Dabis, PhD

INSERM unit 897, ISPED, Université Bordeaux II, France

STUDY_CHAIRMarie-Louise Newell, PhD

University of Southamton, United Kingdom

STUDY_CHAIRDeenan Pillay, PhD

Africa Centre for Health and Population Studies, University of KwaZullu Natal, South Africa

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 16, 2026