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Clinical Trial Summary

The purpose of the study is to evaluate the effect of topiramate on clinical and electrophysiological parameters in patients with diabetic peripheral polyneuropathy. The study will also evaluate the safety of topiramate in this patient population.


Clinical Trial Description

This is a multicenter, double-blind, placebo-controlled study to evaluate the effect of topiramate on clinical and electrophysiological parameters in patients with diabetic peripheral polyneuropathy. Patients will undergo the Baseline Phase when they are tapered off other pain medications, have diabetes controlled and eligibility reassessed. Patients will then be randomized to receive either topiramate or placebo and enter the Double-Blind Phase, which consists of Titration Period (topiramate dose will be titrated from 25mg/day to 200mg/day over 42 days) and Maintenance Period (study medication will be continued for 12 weeks). After the Double-Blind Phase, study medication will be tapered off during the Taper Phase, whose duration will vary depending on each patient. The evaluations include electrophysiological assessment, quantitative sensory assessment, and clinical assessment such as subjective pain scales. Safety evaluations (vital signs, clinical laboratory evaluations, physical and neurological examination, and evaluations of adverse events) will be conducted during the trial. During the first 42 days, doses of topiramate gradually increase to achieve the target dose (200mg daily by mouth), and then the dose is maintained for 12 weeks, after which the dose is slowly reduced and stopped over 12 weeks. ;


Study Design

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


Related Conditions & MeSH terms


NCT number NCT00231673
Study type Interventional
Source Johnson & Johnson Pharmaceutical Research & Development, L.L.C.
Contact
Status Completed
Phase Phase 2
Start date July 2001
Completion date January 2003

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