Completed PHASE2 INTERVENTIONAL 2-arm NCT00216255

EXPRESS: Examining Pagoclone for Persistent Developmental Stuttering Study

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

Sponsor: Endo Pharmaceuticals

Conditions Persistent Developmental Stuttering

Interventions Pagoclone Placebo

Updated 8 times since 2017 Last updated: Aug 27, 2012 Started: Apr 30, 2005 Primary completion: Jul 31, 2011 Completion: Jul 31, 2011

This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

This PHASE2 trial investigates Persistent Developmental Stuttering and is currently completed. Endo Pharmaceuticals leads this study, which shows 8 recorded versions since 2005 — indicating limited longitudinal coverage. This study adds to the longitudinal dataset for psychiatric treatment development.

Status Flow

Change History

8 versions recorded

Sep 2025 — Present [monthly]

Completed PHASE2
Sep 2024 — Sep 2025 [monthly]

Completed PHASE2
Jul 2024 — Sep 2024 [monthly]

Completed PHASE2
Apr 2022 — Jul 2024 [monthly]

Completed PHASE2
Jan 2021 — Apr 2022 [monthly]

Completed PHASE2

▶ Show 3 earlier versions

Jun 2018 — Jan 2021 [monthly]

Completed PHASE2
Feb 2017 — Jun 2018 [monthly]

Completed PHASE2
Jan 2017 — Feb 2017 [monthly]

Completed PHASE2

First recorded

Apr 2005

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

Endo Pharmaceuticals

Data source: Endo Pharmaceuticals

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations

Atlanta, United States , Austin, United States , Brooklyn, United States , Dayton, United States , Indianapolis, United States , New York, United States , Orange, United States , Overland Park, United States , Peoria, United States , Pittsburgh, United States and 6 more locations