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A Confirmatory Study of JNS020QD (Fentanyl) in Patients With Post-herpetic Neuralgia, Complex Regional Pain Syndrome or Postoperative Pain Syndrome

2014-08-27 03:18:09 | BioPortfolio

Summary

The purpose of this study is to evaluate the efficacy and safety of JNS020QD (fentanyl) in opioid-naive patients with post-herpetic neuralgia, comples regional pain syndrome or post-operative pain syndrome who cannot obtain a sufficient analgesic effect by the treatment of non-opioid analgesics.

Description

JNS020QD (fentanyl) used the same matrix system as that of 3-day matrix system but changes every day. This is a multicenter, placebo-controlled, double-blind (neither the physician nor the patient knows the assigned study drug), group-comparison, randomized (study assigned by chance), withdrawal study. Efficacy and safety of JNS020QD (fentanyl) will be confirmed in opioid-naive patients who cannot obtain a sufficient analgesic efficacy from analgesic adjuvants, with post-herpetic neuralgia, Complex Regional Pain Syndrome or postoperative pain syndrome in the study. Application of JNS020QD (fentanyl) will be started with the 12.5 mcg/hr product, and the dose will not be changed for at least 2 days (about 48 hours) after the initiation of application. The dose of JNS020QD (fentanyl) will be increased by 12.5 mcg/hr at one time, and the maximum dose is to be 50 mcg/hr. Of patients who were transferred to treatment period I and had application of JNS020QD for 10 to 29 days, those who meet all of the following criteria can be transferred to treatment period II (double-blind period): (1) Patients with a mean VAS score of = 45 mm during 3 days before the end of treatment period I (titration period), (2) Patients with an improvement of > 15 mm in the mean VAS score during 3 days before the end of treatment period I (titration period) compared with that during 3 days before the end of screening period, (3) Patients whose dose of JNS020QD (fentanyl) application is certain during 3 days before the end of treatment period I (titration period), (4) Patients whose number of rescue doses during 3 days before the end of treatment period I (titration period) is <=twice/day. Then, the patients who complete the period I and meet the eligibility criteria for the treatment period II (double-blind period) will be randomly assigned to the JNS020QD (fentanyl) treatment group or placebo treatment group to continue the final application dose in treatment period I (titration period). Application of patches in treatment period II will be conducted according to the prescribed method based on the final application dose in treatment period I. The study period consists of 3-14 days of screening period, 10-29 days of treatment period I, 12 weeks of treatment period II, 0-2 weeks of tapering period and 1 week of follow up period. The primary end point is time (number of days) from the initial day of patch application in treatment period II to discontinuation due to insufficient analgesic efficacy. The safety evaluations are adverse events, laboratory examinations, vital signs, Electrocardiogram examination, Questionnaire of Opioid Withdrawal Symptoms and Dependence Questionnaire. As pharmacokinetic endpoints, serum fentanyl concentrations are measured. Patients receive initially 12.5 mcg/h JNS020QD (fentanyl), subsequently the dose of JNS020QD (fentanyl) can be increased up to 50 mcg/h in Period I. The duration of Period 1 is 10 to 29 days. In Period II (double-blind period), the assigned patch is applied for 12 weeks at the same dose as used at the end of Period I.

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double-Blind, Primary Purpose: Treatment

Conditions

Pain

Intervention

fentanyl; JNS020

Status

Completed

Source

Janssen Pharmaceutical K.K.

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:18:09-0400

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