- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00830856
Early Versus Delayed Antiretroviral Therapy (ART) in the Treatment of Cryptococcal Meningitis in Africa
Randomized Control Trial of Early vs Delayed ART in the Treatment of Cryptococcal Meningitis.
Study Overview
Status
Conditions
Detailed Description
Cryptococcosis is an invasive fungal infection caused by an encapsulated yeast. Cryptococcosis in humans is almost always caused by Cryptococcus neoformans. The advent of the HIV epidemic has lead to a profound increase in the number of reported cases of cryptococcal meningoencephalitis throughout the world, particularly in sub-Saharan Africa. In Zimbabwe an analysis of the case reports at one of the major tertiary care hospitals showed an increase in the admission rate from meningitis between 1985-1995 from 78 to 523 cases per 100000 admissions with an increase in the number of those cases due to cryptococcosis from 5% to 46.2%.
Cryptococcosis typically develops at a CD4 count of less than 50 cells/ mm3, and is the initial AIDS defining illness in up to 50-60% of patients.
Prior to the introduction of amphotericin B, flucytosine and azoles, mortality from C neoformans meningoencephalitis was close to 100%. The introduction of amphotericin B led to a significant decrease in mortality with 60-70% of patients being successfully treated. The introduction of fluconazole prophylaxis in the 1990s lead to a significant decrease in the incidence of cryptococcosis. The use of antiretroviral therapy has also caused a significant decrease in the incidence of cryptococcal meningitis.
Due to the prohibitive cost of amphotericin B and flucytosine, in many developing countries such as Zimbabwe, the mainstay of the treatment of CM is fluconazole. The current standard treatment is with fluconazole 400mg/day for 8-10 weeks, may be too low to result in adequate CNS concentration of the drug to achieve adequate killing of C. neoformans. Clinically some physicians in Zimbabwe have noted that patients are not responding adequately to this regimen and have started to treat patients with higher doses of fluconazole. Previous studies have shown that higher doses of fluconazole can be used for the treatment of CM and are well tolerated. In our proposed study, patients will be treated with high dose oral fluconazole at 800mg/day for a total 10 week period.
The advent of the increased access to ART in sub-Saharan Africa provides an additional opportunity to improve morbidity and mortality in all AIDS patients. There are as yet no definitive studies to indicate if there is an advantage to immediate ART therapy in the setting of acute CM compared to deferring therapy after the first 10 weeks of intensive CM therapy. This study is designed to address this question and provide physicians in sub-Saharan Africa with evidence based guidelines for the appropriate management of HIV positive patients with acute presentation of CM.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
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-
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Harare, Zimbabwe
- University of Zimbabwe, College of Health Sciences
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- HIV infection documented by a positive HIV antibody test at enrollment;
- Adult men and women (age>18);
- Cryptococcal meningitis infection documented by a positive CSF CRAG or CSF identification of C. neoformans.
- Place of residence is located within a 50km radius of Harare.
Exclusion Criteria:
- Previous diagnosis (>1 week) of and treatment for cryptococcal meningitis
- Currently on ARVs, or have been intermittently on and off ART in the past.
- Concurrent use of medications that affect the metabolism of fluconazole e.g., antiseizure medications, oral hypoglycaemic agents.
- History of cardiac failure and or predisposition to arrhythmias will be excluded.
- They are pregnant or active lactation women
- History of active hepatitis or hepatic or renal dysfunction will be excluded.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: PARALLEL
- Masking: SINGLE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
EXPERIMENTAL: 1
Early initiation of antiretroviral therapy.
Patients in this treatment group were started on Fluconazole 800mg by mouth every day for Cryptococcal Meningitis, and within 72hrs of diagnosis were started on First line antiretroviral therapy per Zimbabwe treatment guidelines which is Stavudine, Lamivudine and Nevirapine.
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Fluconazole 800mg po qday
Initiation within 72 hours of diagnosis of Cryptococcal meningitis.
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EXPERIMENTAL: 2
Delayed initiation of antiretroviral therapy.
Patients in this treatment group were started on Fluconazole 800mg by mouth every day for Cryptococcal Meningitis, and after completion of high dose fluconazole for 10 weeks, the patients in this group were started on First line antiretroviral therapy per Zimbabwe treatment guidelines which is Stavudine, Lamivudine and Nevirapine.
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Fluconazole 800mg po qday
Delayed initiation of ART defined as 10 weeks after initiation of high dose fluconazole therapy.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Mortality
Time Frame: 2 years
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2 years
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Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Chiratidzo E Ndhlovu, MBChB, FRCP, University of Zimbabwe, Department of Medicine
- Principal Investigator: Azure T Makadzange, MD, DPhil, University of Zimbabwe, Department of Immunology
- Study Chair: James Hakim, MBChB, FRCP, University of Zimbabwe, Department of Medicine
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ESTIMATE)
Study Record Updates
Last Update Posted (ESTIMATE)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Central Nervous System Diseases
- Nervous System Diseases
- Infections
- Central Nervous System Infections
- Bacterial Infections and Mycoses
- Mycoses
- Meningitis, Fungal
- Central Nervous System Fungal Infections
- Cryptococcosis
- Meningitis
- Meningitis, Cryptococcal
- Physiological Effects of Drugs
- Molecular Mechanisms of Pharmacological Action
- Anti-Infective Agents
- Antiviral Agents
- Reverse Transcriptase Inhibitors
- Nucleic Acid Synthesis Inhibitors
- Enzyme Inhibitors
- Anti-HIV Agents
- Anti-Retroviral Agents
- Antimetabolites
- Hormones, Hormone Substitutes, and Hormone Antagonists
- Cytochrome P-450 Enzyme Inhibitors
- Hormone Antagonists
- Cytochrome P-450 Enzyme Inducers
- Antifungal Agents
- Steroid Synthesis Inhibitors
- Cytochrome P-450 CYP3A Inducers
- 14-alpha Demethylase Inhibitors
- Cytochrome P-450 CYP2C9 Inhibitors
- Cytochrome P-450 CYP2C19 Inhibitors
- Nevirapine
- Lamivudine
- Stavudine
- Fluconazole
- Stavudine, lamivudine, nevirapine drug combination
Other Study ID Numbers
- ZimCrypto03
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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