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Shorter wait for light therapy? study tests faster treatment for Sun-Damaged skin

NCT ID NCT03066843

Disease control Sponsor: Northwestern University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jul 01, 2026 · Last updated Jul 02, 2026 · Updated 1 time

Summary

This study compares two different incubation times for a light-activated cream used to treat actinic keratosis, a common precancerous skin condition caused by sun exposure. Participants receive either no wait or a one-hour wait after applying the cream before blue light therapy. The goal is to see if a shorter incubation time works just as well, making treatment more convenient.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
5-aminolevulinic acid (ALA) plus blue light therapy
What this could lead to
If successful, this could help doctors choose the most effective and convenient treatment schedule for actinic keratosis, reducing the risk of skin cancer.
What could go wrong
This is a small pilot study with only 28 participants, so results may not apply to everyone. The treatment may cause skin reactions, and the optimal incubation time remains uncertain.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

28 people

The number who actually took part.

Started

Mar 2017

Finished

Aug 2023

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Subjects who have been diagnosed with actinic keratosis. 2. Subjects who by the investigator deem to be suitable for photodynamic therapy of the face or scalp. 3. Males or females ≥ 18 years old 4. Fitzpatrick skin types I-VI 5. Subjects are in good health as judged by the investigator. 6. Subjects who are willing and have the ability to understand and provide informed consent for participation in the study and are able to communicate with the investigator. Exclusion criteria: 1. Subjects who by the investigator are not suitable for photodynamic therapy. 2. Lesions suspicious or proven for skin cancer 3. History of 2 or more ALA- PDT treatments within the past 6 months. 4. Use of keratolytics within 2 days of initiation of treatment (e.g., \>5% urea, glycolic acid, lactic acid, salicyclic acid) 5. Cryotherapy within the past 2 weeks. 6. Topical retinoids within the past 4 weeks 7. Procedures, such as microdermabrasion, ablative lasers, ALA-PDT, chemical peels, 5-fluorouraci, diclofenac, imiquimod within the past 8 weeks 8. Systemic retinoids within the past 6 months 9. Pregnant or breast feeding 10. Uncooperative subjects or subjects with neurological disorders who are incapable of following directions or who are predictably unwilling to return for follow-up examinations. 11. Subjects who are unable to understand the protocol or give informed consent. 12. Subjects who in the opinion of the investigator are not suitable for the study.

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Conditions

The condition(s) this trial relates to.

actinic keratosis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Actinic keratoses

Contacts and locations

Locations

  • Northwestern University Feinberg School of Medicine, Department of Dermatology

    Chicago, Illinois, 60611, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.