Completed PHASE3 INTERVENTIONAL NCT00308867

PD P 506 A-PDT Versus Placebo-PDT and Cryosurgery for the Treatment of AK

Photodynamic Therapy With PD P 506 A or Its Placebo Compared With Cryosurgery for the Treatment of Mild to Moderate Actinic Keratosis

Sponsor: photonamic GmbH & Co. KG

Conditions Actinic Keratosis

Interventions Cryosurgery Photodynamic Therapy

Updated 7 times since 2017 Last updated: Apr 10, 2008 Started: Mar 31, 2006 Primary completion: Jun 30, 2007 Completion: Nov 30, 2007

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

Listed as NCT00308867, this PHASE3 trial focuses on Actinic Keratosis and remains completed. Sponsored by photonamic GmbH & Co. KG, it has been updated 7 times since 2006, reflecting limited change activity. This study adds to the evidence base for this therapeutic area through structured, versioned documentation.

Status Flow

Change History

7 versions recorded

Jan 2026 — Present [monthly]

Completed PHASE3
Sep 2025 — Present [monthly]

Completed PHASE3
Sep 2024 — Sep 2025 [monthly]

Completed PHASE3
Jul 2024 — Sep 2024 [monthly]

Completed PHASE3
Jan 2021 — Jul 2024 [monthly]

Completed PHASE3

▶ Show 2 earlier versions

Jun 2018 — Jan 2021 [monthly]

Completed PHASE3
Jan 2017 — Jun 2018 [monthly]

Completed PHASE3

First recorded

Mar 2006

Trial started

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

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

photonamic GmbH & Co. KG

Data source: photonamic GmbH & Co. KG

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

Study Locations

Augsburg, Germany , Berlin, Germany , Biberach, Germany , Buxtehude, Germany , Dülmen, Germany , Frankfurt a.M., Germany , Gütersloh, Germany , Hildesheim, Germany , Kiel, Germany , Koblenz, Germany and 13 more locations