Completed PHASE2 INTERVENTIONAL 2-arm NCT01195636

A Crossover Study to Evaluate the Safety, Tolerability and Efficacy of XPF-002 in Subjects With Postherpetic Neuralgia (PHN) (XEN402)

A Phase 2a, Randomized, Double-Blind, Placebo-Controlled, Two-Period Crossover Study to Evaluate the Safety, Tolerability, Preliminary Efficacy, and Systemic Exposure of Topical XPF-002 in Subjects With Postherpetic Neuralgia

Sponsor: Xenon Pharmaceuticals Inc.

Conditions Postherpetic Neuralgia

Interventions Placebo XPF-002

Updated 7 times since 2017 Last updated: Sep 20, 2013 Started: Aug 31, 2010 Primary completion: Mar 31, 2011 Completion: Mar 31, 2011

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

A PHASE2 clinical study on Postherpetic Neuralgia, this trial is completed. The trial is conducted by Xenon Pharmaceuticals Inc. and has accumulated 7 data snapshots since 2010. Longitudinal tracking of this trial contributes to a broader understanding of treatment development timelines.

Status Flow

Change History

7 versions recorded

Sep 2025 — Present [monthly]

Completed PHASE2
Sep 2024 — Sep 2025 [monthly]

Completed PHASE2
Jul 2024 — Sep 2024 [monthly]

Completed PHASE2
Jan 2021 — Jul 2024 [monthly]

Completed PHASE2
Jun 2018 — Jan 2021 [monthly]

Completed PHASE2

▶ Show 2 earlier versions

Feb 2017 — Jun 2018 [monthly]

Completed PHASE2
Jan 2017 — Feb 2017 [monthly]

Completed PHASE2

First recorded

Aug 2010

Trial started

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

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

Xenon Pharmaceuticals Inc.

Data source: Xenon Pharmaceuticals Inc.

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

Study Locations

Albuquerque, United States , Atlanta, United States , Austin, United States , Bay City, United States , Bradenton, United States , Decatur, United States , Hartsdale, United States , Houston, United States , Jonesboro, United States , Las Vegas, United States and 14 more locations