Completed

A Phase II/III Double-Blind Study of Amitriptyline and Mexiletine for Painful Neuropathy in HIV Infection

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What is being tested

Mexiletine hydrochloride

+ Benztropine mesylate
+ Amitriptyline hydrochloride
Drug
Who is being recruted

HIV Infections

+ Peripheral Nervous System Disease
Over 18 Years
How is the trial designed

Treatment Study

Phase 2
Interventional

Summary

Principal SponsorNational Institute of Allergy and Infectious Diseases (NIAID)
Last updated: October 29, 2021
Sourced from a government-validated database.Claim as a partner

To assess the efficacy, safety, and tolerability of amitriptyline hydrochloride versus mexiletine hydrochloride in reducing pain intensity in patients with HIV-related painful peripheral neuropathy. No large-scale controlled clinical trials of symptomatic therapy for painful HIV-related neuropathy have been attempted. Both amitriptyline and mexiletine have been useful in the management of painful neuropathies; however, both are associated with certain toxicities. In this comparative study of amitriptyline and mexiletine, benztropine mesylate also will be included as an active placebo to mimic the side effects of the study drugs. No large-scale controlled clinical trials of symptomatic therapy for painful HIV-related neuropathy have been attempted. Both amitriptyline and mexiletine have been useful in the management of painful neuropathies; however, both are associated with certain toxicities. In this comparative study of amitriptyline and mexiletine, benztropine mesylate also will be included as an active placebo to mimic the side effects of the study drugs. Patients are randomized to receive amitriptyline, mexiletine, or benztropine mesylate as an active placebo to mimic the mild side effects associated with both amitriptyline and mexiletine. Doses are gradually increased over 4 weeks until a minimum effective dose or MTD is reached, then patients are treated for at least 4 additional weeks at the final dose before gradually tapering off. Neurologic exams are performed at screening and at the end of treatment. Intensity of pain is rated twice daily by the patient. Patients are followed at Weeks 2, 4, and 8, and at 10 days after completely tapering off of drug. PER 3/16/95 AMENDMENT: Patients with no pain relief 14 days after initiation of study therapy may have dose doubled or increased to maximum allowable dose, whichever is lower. Then if no improvement occurs within 14 days after dose increase, patients have the option of discontinuing study medication.

Official TitleA Phase II/III Double-Blind Study of Amitriptyline and Mexiletine for Painful Neuropathy in HIV Infection 
Principal SponsorNational Institute of Allergy and Infectious Diseases (NIAID)
Last updated: October 29, 2021
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details
240 patients to be enrolledTotal number of participants that the clinical trial aims to recruit.
Treatment Study
These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.

How the interventions assigned to participants is kept confidential
Neither participants nor researchers know who is receiving which treatment. This is the most rigorous way to reduce bias, ensuring that expectations do not influence the results.

Other Ways to Mask Information
Open-label
: Everyone knows which treatment is being given.

Single-blind
: Participants do not know which treatment they are receiving, but researchers do.

Triple-blind
: Participants, researchers, and outcome assessors do not know which treatment is given.

Quadruple-blind
: Participants, researchers, outcome assessors, and care providers all do not know which treatment is given.

Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria
Any sexBiological sex of participants that are eligible to enroll.
Over 18 YearsRange of ages for which participants are eligible to join.
Healthy volunteers not allowedIf individuals who are healthy and do not have the condition being studied can participate.
Conditions
Pathology
HIV Infections
Peripheral Nervous System Disease
Criteria
No eligibility criteria are available at this time.Please check with the study contact for more details. 
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Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.
This study has 37 locations
Suspended
Alabama Therapeutics CRSBirmingham, United StatesSee the location
Suspended
UCLA CARE Center CRSLos Angeles, United States
Suspended
Ucsd, Avrc CrsSan Diego, United States
Suspended
Ucsf Aids CrsSan Francisco, United States

Completed37 Study Centers
A Phase II/III Double-Blind Study of Amitriptyline and Mexiletine for Painful Neuropathy in HIV Infection | PatLynk