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Completed

NCT Number: NCT00216255

EXPRESS: Examining Pagoclone for Persistent Developmental Stuttering Study

The objective of the study is to determine the effects of pagoclone on the symptoms of Persistent Developmental Stuttering, using a flexible dosing titration regimen on persistent developmental stuttering in patients 18 to 65 years of age.

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Key information

Conditions

Persistent Developmental Stuttering

Age range

18 year–65 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

Pivotal Research Centers, Peoria, Arizona, United States

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • PDS defined as DSM-IV-TR criteria, symptoms starting before age 8, and a total overall score of 18-36 on the SSI-3
  • English-speaking, with 8th grade education, able to understand and cooperate with study requirements without assistance
  • Not pregnant or breastfeeding
  • Able to consent

Exclusion criteria

  • No diagnoses of other CNS/Mental health disorders in the last 6 months
  • No use of psychotropic medication or other medication for stuttering within 4 weeks prior to screening
  • No use of non-medicinal stuttering treatments for 5 months prior to the study
  • No use of illicit drugs or opiates of any kind

Treatment and study plan

Pagoclone

Drug

Placebo

Drug

Primary outcomes

  1. Effects of Pagaclone

    Time frame: 8 weeks double blind followed by a 52 weeks open label

    Primary objective using a flexible dosing titration regimen from 0.15mg Pagocolne BID, titrated at 2 weeks to 0.30mg Pagaclone BID for an additional 6 weeks versus placebo, on persistent developmental stuttering in patients 18 to 65 years of age over an 8 week, double blind treatment period, followed by five 53 week open label treatment extension periods. The primary efficacy variables will be based on data collected on the stuttering Severity Instrument-3 (SSI-3) Frequency and Duration Subscore, the Subjective Screening of Stuttering (SSS) Severity Subscore, and the treatment and week 8 visits. All efficacy assessments will evaluate change from pre-treatment to each on-treatment week.

Secondary outcomes

  1. Secondary Objectives

    Time frame: Pre-treatment through week 8

    SSI-3 Total overall Score and individual subscores (including frequency, duration, and physical concomitant subscores) Subjective Screening of Stuttering (SSS) test Speech Naturalness Scales (SNS) Liebowitz Social Anxiety Scale (LSAS) Stuttering Clinician's Global Impression-Improvement (CGI) Optional Neuropsychological Test Optional Functional Brain Imaging

Sponsors and collaborators

Lead sponsor

Endo USA Inc., a Keenova Therapeutics Company

Industry

Registry information

Official study title

An 8-week, Double-blind, Randomized, Multicenter, Flexible-dose, Placebo Controlled Pilot Study of Pagoclone in Patients With PDS Followed by a 52-week Open-label Extension

Important dates

Study start
2005
Primary completion
2011
Study completion
2011
First posted
Sep 22, 2005
Registry last updated
Sep 3, 2012

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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