A Long-Term Study To Evaluate Safety And Efficacy Of Pregabalin For Pain Associated With Diabetic Peripheral Neuropathy

An Open-Label Extension Safety And Efficacy Study Of Pregabalin (CI-1008) For Pain Associated With Diabetic Peripheral Neuropathy

The purpose of this study is to assess the safety and efficacy of the long-term use of pregabalin at doses up to 600 mg/day in patients with painful diabetic peripheral neuropathy who have completed 13 weeks of dosing in Study A0081163

Study Overview

Status

Completed

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

123

Phase

  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • Fukuoka, Japan
        • Pfizer Investigational Site
      • Oita, Japan
        • Pfizer Investigational Site
      • Tokushima, Japan
        • Pfizer Investigational Site
    • Aichi
      • Nagoya, Aichi, Japan
        • Pfizer Investigational Site
    • Fukushima
      • Date-shi, Fukushima, Japan
        • Pfizer Investigational Site
      • Nihonmatsu, Fukushima, Japan
        • Pfizer Investigational Site
      • Shirakawa-shi, Fukushima, Japan
        • Pfizer Investigational Site
      • Sukagawa, Fukushima, Japan
        • Pfizer Investigational Site
    • Kanagawa
      • Kamakura, Kanagawa, Japan
        • Pfizer Investigational Site
      • Yokohama, Kanagawa, Japan
        • Pfizer Investigational Site
    • Miyagi
      • Sendai, Miyagi, Japan
        • Pfizer Investigational Site
    • Nagano
      • Matsumoto, Nagano, Japan
        • Pfizer Investigational Site
      • Ueda, Nagano, Japan
        • Pfizer Investigational Site
    • Oita
      • Beppu, Oita, Japan
        • Pfizer Investigational Site
    • Okayama
      • Yamada, Okayama, Japan
        • Pfizer Investigational Site
    • Okinawa
      • Naha, Okinawa, Japan
        • Pfizer Investigational Site
      • Tomishiro, Okinawa, Japan
        • Pfizer Investigational Site
      • Urazoe, Okinawa, Japan
        • Pfizer Investigational Site
    • Osaka
      • Hirano-ku, Osaka, Japan
        • Pfizer Investigational Site
      • Suminoe-ku, Osaka, Japan
        • Pfizer Investigational Site
    • Shizuoka
      • Sunto-gun, Shizuoka, Japan
        • Pfizer Investigational Site
    • Tochigi
      • Oyama-shi, Tochigi, Japan
        • Pfizer Investigational Site
    • Tokyo
      • Arakawa, Tokyo, Japan
        • Pfizer Investigational Site
      • Bunkyo-ku, Tokyo, Japan
        • Pfizer Investigational Site
      • Chiyoda-ku, Tokyo, Japan
        • Pfizer Investigational Site
      • Ohta-ku, Tokyo, Japan
        • Pfizer Investigational Site
      • Shibuya-ku, Tokyo, Japan
        • Pfizer Investigational Site

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patients who completed the 13-week treatment of painful diabetic peripheral neuropathy in Study A0081163.
  • Patients must be able to understand and cooperate with study procedures and have signed a written informed consent prior to entering the study

Exclusion Criteria:

  • Patients who experienced serious adverse events in the preceding study (A0081163) that were determined by the investigator or the study sponsor to be causally related to the study medication.
  • Patients exhibiting treatment non-compliance in the preceding study (A0081163)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: pregabalin
Dosage: 150-600 mg/day (75-300 mg bid), oral administration, Treatment duration: 52 weeks

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Summary of Adverse Events
Time Frame: 53 weeks
Number of participants with all causality adverse events, serious adverse events, severe adverse events, adverse events resulted in discontinuation, dose reduced or temporary discontinuation. Participants are counted only once per treatment in each row.
53 weeks

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change From Baseline in Short-Form McGill Pain Questionnaire: Sensory Scores
Time Frame: From baseline to 52 weeks or study discontinuation (Study Endpoint)
The mean change from baseline in Short-Form McGill Pain Questionnaire Scores at study endpoint. Sensory score ranges from 0-33. Higher scores indicate more severe pain.
From baseline to 52 weeks or study discontinuation (Study Endpoint)
Change From Baseline in Short-Form McGill Pain Questionnaire: Affective Scores
Time Frame: From baseline to 52 weeks or study discontinuation (Study Endpoint)
The mean change from baseline in Short-Form McGill Pain Questionnaire Scores at study endpoint. Affective score ranges from 0-12. Higher scores indicate more severe pain.
From baseline to 52 weeks or study discontinuation (Study Endpoint)
Change From Baseline in Short-Form McGill Pain Questionnaire: Total Scores
Time Frame: From baseline to 52 weeks or study discontinuation (Study Endpoint)
The mean change from baseline in Short-Form McGill Pain Questionnaire Scores at study endpoint. Total score ranges from 0-45. Higher scores indicate more severe pain.
From baseline to 52 weeks or study discontinuation (Study Endpoint)
Change From Baseline in Short-Form McGill Pain Questionnaire: Visual Analogue Scale Scores
Time Frame: From baseline to 52 weeks or study discontinuation (Study Endpoint)
The mean change from baseline in Short-Form McGill Pain Questionnaire Scores at study endpoint. Visual Analogue Scale Score ranges from 0-100 mm. Higher scores indicate more severe pain.
From baseline to 52 weeks or study discontinuation (Study Endpoint)
Change From Baseline in Short-Form McGill Pain Questionnaire: Present Pain Intensity Scores
Time Frame: From baseline to 52 weeks or study discontinuation (Study Endpoint)
The mean change from baseline in Short-Form McGill Pain Questionnaire Scores at study endpoint. Present pain intensity score ranges from 0-5. Higher scores indicate more severe pain.
From baseline to 52 weeks or study discontinuation (Study Endpoint)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

February 1, 2008

Primary Completion (Actual)

January 1, 2010

Study Completion (Actual)

January 1, 2010

Study Registration Dates

First Submitted

November 2, 2007

First Submitted That Met QC Criteria

November 2, 2007

First Posted (Estimate)

November 4, 2007

Study Record Updates

Last Update Posted (Actual)

January 25, 2021

Last Update Submitted That Met QC Criteria

January 21, 2021

Last Verified

April 1, 2011

More Information

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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