Imaging Techniques to Monitor Photosensitizer and sO2 Levels During Photodynamic Therapy of Actinic Keratoses

NCT ID: NCT05923060

Last Updated: 2025-07-29

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE2

Total Enrollment

20 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-08-25

Study Completion Date

2026-01-31

Brief Summary

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The purpose of the study is to test a new video device for actinic keratoses. The device takes images of your skin lesions during the treatment, to learn whether this device can predict how well the treatment is working.

Detailed Description

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This intervention is designed to help establish what the optimal conditions are for treating actinic keratoses with photodynamic therapy (PDT). The primary outcome of this study is to determine whether the rate of singlet oxygen (sO2) production and/or the initial intralesional photosensitize (PpIX) levels, can predict the clinical responsiveness of AK lesions to PDT. Participants will receive standard red light PDT treatment, except that lesions will be carefully counted beforehand. During the window of red light illumination, photos and a video of one area of skin will be taken to allow us to monitor the progress of the treatment. Any remaining lesions will be counted upon follow-up.

Conditions

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Actinic Keratoses

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Standard PDT + topical aminolevulinate + red light illumination

Standard PDT using topical aminolevulinate followed by red light illumination for actinic keratosis. A region of interest (ROI) on the skin of the arms, hands, legs, or feet will be selected for monitoring. This ROI will be marked and baseline measurements will be taken. The topical drug Levulan (ALA) will be applied to the ROI and other areas being treated, and covered with plastic wrap. Prior to red light illumination, post topical measurements and baseline values will be performed to measure PpIX and sO2. Red light illumination will follow, and sO2 phosphorescence will be recorded continuously from the ROI. After, a post-PpIX measurement will be taken.

Group Type EXPERIMENTAL

Topical Aminolevulinate

Intervention Type DRUG

Topical Levulan Kerastick is applied to actinic keratoses.

Photodynamic therapy (PDT)

Intervention Type PROCEDURE

PDT is a technique that combines a photosensitizing drug and an intense light source to kill tumor cells.

Red light illumination

Intervention Type PROCEDURE

To occur post-PTD; used for activation of ALA during photodynamic therapy.

Interventions

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Topical Aminolevulinate

Topical Levulan Kerastick is applied to actinic keratoses.

Intervention Type DRUG

Photodynamic therapy (PDT)

PDT is a technique that combines a photosensitizing drug and an intense light source to kill tumor cells.

Intervention Type PROCEDURE

Red light illumination

To occur post-PTD; used for activation of ALA during photodynamic therapy.

Intervention Type PROCEDURE

Other Intervention Names

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Levulan Kerastick Aminolevulinic Acid Levulan

Eligibility Criteria

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Inclusion Criteria

* Participants who have at least 10 Actinic Keratoses lesions on the arms of legs, and with two AK lesions close enough to be seen together within a selected region of interest (ROI)
* Participants must be able to understand and are willing to sign a written informed consent document

Exclusion Criteria

* Female participants cannot be or become pregnant, nor can be nursing while on this study
* Using any topical treatment on their AKs; must stop at least one month prior
* Currently undergoing treatment for other cancers with medical or radiation therapy
* Patients with a known hypersensitivity to 5-aminolevulinic acid or any component of the study material
* Patients with history of a photosensitivity disease, such as porphyria cutanea tarda
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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National Cancer Institute (NCI)

NIH

Sponsor Role collaborator

National Institutes of Health (NIH)

NIH

Sponsor Role collaborator

Case Comprehensive Cancer Center

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Edward Maytin, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

Cleveland Clinic, Case Comprehensive Cancer Center

Locations

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Cleveland Clinic, Case Comprehensive Cancer Center

Cleveland, Ohio, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Edward Maytin, MD, PhD

Role: CONTACT

(216) 445-6676

Facility Contacts

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Edward Maytin, MD, PhD

Role: primary

216-445-6676

Other Identifiers

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R44CA250727

Identifier Type: NIH

Identifier Source: secondary_id

View Link

CASE6622

Identifier Type: -

Identifier Source: org_study_id

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