Pain Clinical Trial
Official title:
A Multicenter Randomized, Double-Blind, Controlled Study of NGX-4010 for the Treatment of Postherpetic Neuralgia
The purpose of the study is to assess the efficacy and safety of NGX-4010 applied for 60 minutes for the treatment of postherpetic neuralgia (PHN).
This study is a 12-week randomized, double-blind, controlled multi-center evaluation of the
efficacy, safety and tolerability of NGX-4010 for the treatment of PHN. Eligible subjects
will have pain from PHN, with average numeric pain rating scale (NPRS) scores during
screening of 3 to 9 (inclusive). Painful areas of up to 1000 square centimeters will be
treated during a single treatment administration in this study. Subjects will be randomly
assigned to receive active NGX-4010 patches or low-concentration control patches that are
identical in appearance, according to a 1:1 allocation scheme.
Subjects may be on stable chronic oral pain medication regimens, but currently will not be
using any topical pain medications on the affected areas. NPRS scores for the average pain
in the past 24 hours will be recorded daily in the evening, beginning on the day of the
Screening Visit (usually on Day -14). Subjects will continue to record NPRS scores in a
take-home diary from the evening on the day of treatment through the evening before the
Termination Visit at Week 12. Subjects will return for interim follow-up visits at Weeks 4
and 8 following study treatment.
;
Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double-Blind, Primary Purpose: Treatment
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