Interactions of HIV Protease Inhibitors and Methadone in HIV-Infected Patients

NCT ID: NCT00000906

Last Updated: 2021-11-04

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE1

Total Enrollment

12 participants

Study Classification

INTERVENTIONAL

Study Completion Date

2000-09-30

Brief Summary

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The purpose of this study is to see if it is safe to combine methadone with two HIV protease inhibitors (PIs), ritonavir (RTV) and saquinavir (SQV), in HIV-infected patients not currently taking PIs. This study will measure the interactions between methadone and the PIs.

Methadone is used treat addicts and to treat severe pain. In order to find the safest way to use methadone with PIs, it is important to evaluate how they interact.

Detailed Description

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Methadone is extensively used in the maintenance treatment of addicts and in the management of severe pain. In order to use methadone with HIV protease inhibitors correctly, it is important to evaluate and quantify interactions between the protease inhibitors and methadone.

Patients receive their usual daily dose of methadone followed with ritonavir and saquinavir, respectively, twice a day. Patients are evaluated on Day 4 for safety and tolerance, and their ritonavir dose is increased. On Day 8 patients are evaluated for a steady-state level of methadone. After 2 weeks of the protease inhibitor therapy, they return for methadone pharmacokinetic sampling at Day 15 over 24 hours. Both protease inhibitors and methadone are administered on Day 15 on an inpatient basis. On Day 30, patients are assessed for safety and tolerance.

Conditions

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HIV Infections

Keywords

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Methadone HIV-1 Dose-Response Relationship, Drug Drug Interactions Drug Therapy, Combination Saquinavir Adolescent Behavior HIV Protease Inhibitors Ritonavir Narcotics Substance-Related Disorders

Study Design

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Primary Study Purpose

TREATMENT

Interventions

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Ritonavir

Intervention Type DRUG

Saquinavir

Intervention Type DRUG

Methadone hydrochloride

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

You may be eligible for this study if you:

* Are HIV-positive and have an HIV RNA count below 100,000 copies/ml within 30 days prior to study entry.
* Are taking methadone.
* Are at least 18 years old.
* Are within 40% of your ideal body weight and weigh at least 99 lbs.

Exclusion Criteria

You will not be eligible for this study if you:

* Are allergic to or are unable to take RTV or SQV.
* Have a history of treatment failure with indinavir, RTV, or SQV.
* Have a history of certain illnesses that might prevent you from completing the study.
* Have severe diarrhea or other stomach problems.
* Have taken any PI within 4 weeks prior to study entry.
* Would be unable to complete the study due to alcohol or drug abuse.
* Are co-enrolled in other protocols that have you taking medications that are prohibited in this study.
* Are taking PIs other than RTV or SQV.
* Are receiving certain therapies or are taking certain medications, including experimental drugs.
* Have an active opportunistic (AIDS-related) infection or disease that requires medication within 14 days prior to study entry.
* Are pregnant or breast-feeding.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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National Institute of Allergy and Infectious Diseases (NIAID)

NIH

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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John G. Gerber

Role: STUDY_CHAIR

Joseph Gal

Role: STUDY_CHAIR

Locations

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San Francisco Gen Hosp

San Francisco, California, United States

Site Status

Univ of Colorado Health Sciences Ctr

Denver, Colorado, United States

Site Status

Johns Hopkins Hosp

Baltimore, Maryland, United States

Site Status

Beth Israel Med Ctr

New York, New York, United States

Site Status

Chelsea Ctr

New York, New York, United States

Site Status

Cornell Univ Med Ctr

New York, New York, United States

Site Status

Mount Sinai Med Ctr

New York, New York, United States

Site Status

Countries

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United States

References

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Gerber JG, Rosenkranz S, Segal Y, Aberg J, D'Amico R, Mildvan D, Gulick R, Hughes V, Flexner C, Aweeka F, Hsu A, Gal J; ACTG 401 Study Team. Effect of ritonavir/saquinavir on stereoselective pharmacokinetics of methadone: results of AIDS Clinical Trials Group (ACTG) 401. J Acquir Immune Defic Syndr. 2001 Jun 1;27(2):153-60. doi: 10.1097/00126334-200106010-00010.

Reference Type BACKGROUND
PMID: 11404537 (View on PubMed)

Other Identifiers

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11357

Identifier Type: REGISTRY

Identifier Source: secondary_id

ACTG 401

Identifier Type: -

Identifier Source: org_study_id