Efficacy Safety Study Comparing 2 Doses of NVP After Initiating Rifampin-containing TB Therapy

Phase 2

Completed

• Conditions: HIV Infections; Tuberculosis
• Interventions: Drug: HAART containing nevirapine

• Registration Number: NCT00476853
• Lead Sponsor: The HIV Netherlands Australia Thailand Research Collaboration

Brief Summary

A 48 week, randomized, open-label, two arm study to compare the efficacy, safety and tolerability of HAART containing nevirapine 400 mg/day versus nevirapine 600 mg/day in HIV-1 infected patients started at 2-6 weeks after initiating rifampicin containing antituberculosis therapy.

Detailed Description

Preliminary data from the HIVNAT PK laboratory indicate that out of 5/60 patients treated with nevirapine (200 mg bid) and rifampicin had sub-therapeutic nevirapine levels (\<3.0 mg mg/L). In a control group of 38 patients using nevirapine without rifampicin there were no sub-therapeutic levels. A dose increase of nevirapine while patients who are receiving that rifampicin may be required. Both nevirapine and rifampicin are tepatotoxic agents as are other agents used in treatment of HIV or tuberculosis. Using a higher nevirapine may prevent the occurrence of sub-therapeutic nevirapine levels, but may also induce more liver toxicity. To address these issues, we designed a randomized prospective study to evaluate the safety, efficacy and pharmacokinetics of nevirapine 400 mg/day versus 600 mg/day with a two weeks lead-in 200 mg/day and 400 mg/day respectively, in TB-HIV co-infected patients who taking rifampicin and short-term efficacy and toxicity.

Study Timeline

• Study Start: 2005-10
• Study First Submitted: 2007-05-20
• Study First Submitted QC: 2007-05-21
• Study First Posted: 2007-05-22
• Primary Completion: 2008-09
• Study Completion: 2009-12
• Status Verified: 2020-07
• Last Update Submitted: 2020-07-15
• Last Update Posted: 2020-07-17

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 42

Inclusion Criteria

1. Confirmed HIV positive after voluntary counseling and testing
2. Aged 18-60 years of age
3. Antiretroviral treatment naïve.
4. CD4+ cell count of < 200 cells/mm3 at the time of diagnosed TB
5. TB is diagnosed and using treatment with rifampin base therapy for at least 2 weeks but no longer than 4 weeks duration. The requirement for study entry is at least one acid-fast bacillus (AFB) positive smear with a typical syndrome and/or CXR findings consistent with pulmonary TB. Pulmonary TB and / or extra pulmonary TB will be included if AFB or culture for TB is positive.
6. No other active OI (CDC class C event)
7. Negative pregnancy test in females, and willing to use reliable contraception
8. Able to provide written informed consent.

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Exclusion Criteria

1. The following laboratory variables, i. absolute neutrophil count (ANC) < 1000 cells/uL ii. hemoglobin < 6.5 g/dL iii. platelet count < 50,000 cells/uL iv. serum AST, ALT > 5 x ULN vi. serum bilirubin > 2 x ULN vii. serum creatinine > 2 x ULN viii. Pregnant or nursing mothers.
2. Current use of steroid and other immunosuppressive agents.
3. Current use of any prohibited medications related to compliance and drug pharmacokinetics (see appendix )
4. Acute therapy for serious infection or other serious medical illness (in the judgment of the site Principal Investigator) requiring systemic treatment and/or hospitalization.
5. Patients with current alcohol or illicit substance use that in the opinion of the site Principal Investigator would conflict with any aspect of the conduct of the trial.
6. The persons who had been received a mono-therapy of nevirapine
7. Unlikely to be able to remain in follow-up for the protocol defined period.
8. Patients with chronic active liver disease.
9. Patients with proven or suspected acute hepatitis. Patients with chronic viral hepatitis are eligible provided ALT, AST < 5 x ULN.
10. Karnofsky performance score <30%

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
1	HAART containing nevirapine	NVP 400 mg
2	HAART containing nevirapine	NVP 600 mg

Primary Outcome Measures

Name	Time	Method
Efficacy of nevirapine based HAART 400 mg/day versus 600 mg/day on HIV-1 load as measured by HIV-1 RNA quantification in plasma	48 weeks

Secondary Outcome Measures

Name	Time	Method
Safety and tolerability of nevirapine based HAART 400 mg/day versus 600 mg/day	48 weeks
Nevirapine level at week 2, 4 and 12 and 12 hour PK at week 4 (only 20 patients)	48 weeks
Immune recovery syndrome, adherence, clinical improvement, incidence of new/recurrent AIDS events (CDC class C) between two group	48 weeks
Time to mortality or new/recurrent AIDS events (CDC class C), 1 year mortality rate of TB/HIV patients, emerging of ARV resistant especially nevirapine, emerging of anti-TB resistance	48 weeks

Trial Locations

Locations (6)

The HIV Netherlands Australia Thailand Research Collaboration (HIV-NAT); 🇹🇭 Bangkok, Thailand

Chiangrai Hospital; 🇹🇭 Chiang Rai, Thailand

Mae Chan Hospital; 🇹🇭 Chiang Rai, Thailand

Phan Hospital; 🇹🇭 Chiang Rai, Thailand

Bamrasnaradura Institute; 🇹🇭 Nonthaburi, Thailand

Central Chest Hospital; 🇹🇭 Nonthaburi, Thailand