Cotrimoxazole Prophylaxis Cessation Study Among Stabilized HIV-Infected Adult Patients on HAART in Entebbe, Uganda (CCS)

The recruitment status of this study is unknown because the information has not been verified recently.
Verified May 2008 by MRC/UVRI Uganda Research Unit on Aids.
Recruitment status was  Not yet recruiting
Sponsor:
Collaborator:
Medical Research Council
Information provided by:
MRC/UVRI Uganda Research Unit on Aids
ClinicalTrials.gov Identifier:
NCT00674921
First received: May 6, 2008
Last updated: June 4, 2008
Last verified: May 2008
  Purpose

According to the national guidelines in Uganda and to the World Health Organization guidelines, HIV-infected patients should receive cotrimoxazole prophylaxis indefinitely. There are, however, concerns regarding the indefinite application of cotrimoxazole prophylaxis among patients immunologically stabilized on HAART (e.g. high pill burden, drug-drug interactions, toxicity and poor adherence because of treatment fatigue). To date no empirical evidence is available regarding the safety and optimal timing for the cessation of cotrimoxazole prophylaxis among HAART patients who successfully restored immunological competence.

Research question: Does morbidity significantly differ between continuation (orthodox) and cessation (experimental) of cotrimoxazole prophylaxis among immuno-competent patients stable HAART in the resource-limited setting of Uganda?


Condition Intervention Phase
HIV Infections
Drug: cotrimoxazole
Drug: Placebo
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Factorial Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Prevention
Official Title: Cotrimoxazole Prophylaxis Cessation Study Among Stabilized HIV-Infected Adult Patients on HAART in Entebbe, Uganda

Resource links provided by NLM:


Further study details as provided by MRC/UVRI Uganda Research Unit on Aids:

Primary Outcome Measures:
  • all-cause morbidity such as pneumonia or malaria (presumptive and definitive diagnosis) [ Time Frame: 3 years ] [ Designated as safety issue: Yes ]

Secondary Outcome Measures:
  • sub-clinical laboratory abnormalities (such as neutropenia) and serious adverse events (such as death) [ Time Frame: 3 years ] [ Designated as safety issue: Yes ]

Estimated Enrollment: 1650
Study Start Date: June 2008
Estimated Study Completion Date: June 2011
Estimated Primary Completion Date: June 2011 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Placebo Comparator: 1
It will comprise patients randomized to receive the placebo (stop cotrimoxazole prophylaxis) at CD4 counts of 200 or more but less than 350 cells/ul as they continue with HAART. Patients will be followed until they achieve a CD4 count of 350 cells/ul.
Drug: Placebo
starch, magnesium stearate, sodium lauryl sulphate
Active Comparator: 2
It will comprise patients randomized to continue with cotrimoxazole prophylaxis and HAART at CD4 counts of 200 or more but less than 350 cells/ul. These patients will be followed until they achieve a CD4 count of 350 cells/ul and above, at which point they will be considered for the second randomization.
Drug: cotrimoxazole
cotrimoxazole 800/160 mg once daily as indicated by the start and end times of the specified arms for continued prevention of HIV-related infections
Placebo Comparator: A
This arm will comprise patients who have achieved a CD4 count of 350 or more cells/ul either at the beginning of the study or once they have reached this threshold at the end of follow up in arms 1 and 2. They (including those previously in Arm 1) will receive the placebo (stop cotrimoxazole prophylaxis) after the second randomization but continue with HAART.
Drug: Placebo
starch, magnesium stearate, sodium lauryl sulphate
Active Comparator: B
It will comprise patients randomized to continue or start with cotrimoxazole prophylaxis and HAART at CD4 of 350 or more cells/ul after second randomization. Some of them will have used cotrimoxazole prophylaxis whilst they were in arm 2 and others in arm 1 will restart cotrimoxazole prophylaxis at this stage.
Drug: cotrimoxazole
cotrimoxazole 800/160 mg once daily as indicated by the start and end times of the specified arms for continued prevention of HIV-related infections

Detailed Description:

Randomized double-blind placebo controlled equivalence trial to be conducted among consenting clinically healthy patients on HAART with 2 or more CD4 counts of 200 cells/ul or more for at least 3 months. The study will enable comparison of effects of randomized cessation of cotrimoxazole prophylaxis at 2 CD4-guided thresholds (200 Vs 350 cells/ul).

Rationale for inclusion of the placebo-controlled design

  • The double-blind placebo controlled approach is feasible and ethically justified in this equipoise situation to allow for concealment of allocated intervention among investigators and patients and avoids accidental unblinding of investigators to the allocated interventions by trial patients.
  • Maintenance of continued cotrimoxazole prophylaxis among patients randomized to this intervention will be easier if there is no awareness that those patients randomized to cessation of prophylaxis have a relative advantage of reduced pill burden.
  • It would be very difficult to maintain cessation of cotrimoxazole prophylaxis among patients randomized to do so in our setting where cotrimoxazole is readily and cheaply available in drug shops, drug stores and pharmacies.

First randomisation

Patients who have been on HAART for at least 3 months and who have a confirmed CD4 count between 200 and 349 cells/ul will be randomized to continue prophylaxis with active cotrimoxazole or to cease prophylaxis with active cotrimoxazole but continue with ingestion of the placebo cotrimoxazole daily.

Second randomization

Patients who achieve a confirmed CD4 count of 350 cells/ul or more while on HAART will be randomized to continue prophylaxis with active cotrimoxazole or to cease prophylaxis with active cotrimoxazole but continue with ingestion of placebo cotrimoxazole daily. Some patients will have participated already in 1st randomization but others will be entering the trial at this stage for the first time.

Rationale for 4 trial arms

In order to assess the separate effects of cessation of cotrimoxazole prophylaxis in trial patients at the 2 randomization stages above, those continuing with prophylaxis will be compared with those ceasing prophylaxis, necessitating 2 arms at each stage.

  Eligibility

Ages Eligible for Study:   16 Years to 59 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Consenting HIV-infected patient aged 16 years or older,
  • Resident within 40 kms of study clinics
  • Regularly attending clinics
  • Documented HAART intake for at least 3 months
  • Clinically healthy and stable
  • Confirmed CD4 count of 200 cells/ul more.

Exclusion Criteria:

  • Acutely ill patients with opportunistic or other infections
  • Patients already enrolled in other HAART trials (e.g DART trial)
  • First trimester pregnancy at enrolment
  • Clinical and immunological evidence of HAART treatment failure
  • Unable to attend study clinics regularly
  • Hypersensitivity to cotrimoxazole
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00674921

Contacts
Contact: George Mukalazi Miiro, MSc, MBChB 256-414-320-272 george.miiro@mrcuganda.org
Contact: Heiner Grosskurth, PhD, MD 256-414-320-272 heiner.grosskurth@mrcuganda.org

Locations
Uganda
MRC/UVRI Uganda Research Unit on Aids
Entebbe, Uganda, 256
Sponsors and Collaborators
MRC/UVRI Uganda Research Unit on Aids
Medical Research Council
Investigators
Principal Investigator: George Miiro, MSc, MBChB MRC/UVRI Unit
Study Director: Heiner Grosskurth, PhD, MD MRC/UVRI Unit
Principal Investigator: Paula Munderi, MRCP, MBChB MRC/UVRI Unit
  More Information

Publications:

Responsible Party: Dr George Miiro, MRC/UVRI Uganda Research Unit on Aids
ClinicalTrials.gov Identifier: NCT00674921     History of Changes
Other Study ID Numbers: 009/ESR/NDA/DID-01/2008
Study First Received: May 6, 2008
Last Updated: June 4, 2008
Health Authority: Uganda: National Council for Science and Technology

Keywords provided by MRC/UVRI Uganda Research Unit on Aids:
Opportunistic Infections
AIDS
HIV
Treatment Experienced

Additional relevant MeSH terms:
HIV Infections
Acquired Immunodeficiency Syndrome
Lentivirus Infections
Retroviridae Infections
RNA Virus Infections
Virus Diseases
Sexually Transmitted Diseases, Viral
Sexually Transmitted Diseases
Immunologic Deficiency Syndromes
Immune System Diseases
Slow Virus Diseases
Trimethoprim-Sulfamethoxazole Combination
Anti-Infective Agents, Urinary
Anti-Infective Agents
Therapeutic Uses
Pharmacologic Actions
Renal Agents
Antimalarials
Antiprotozoal Agents
Antiparasitic Agents

ClinicalTrials.gov processed this record on April 15, 2014