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Short Contact Protocols to Reduce Pain During 10% ALA Gel Red-light Photodynamic Therapy of Actinic Keratoses

Short Contact Protocols to Reduce Pain During Treatment of Actinic Keratoses With 10% ALA Gel Red-light Photodynamic Therapy (PDT)

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06027619
Enrollment
30
Registered
2023-09-07
Start date
2023-10-02
Completion date
2024-07-08
Last updated
2025-10-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Actinic Keratosis

Keywords

Actinic Keratoses, Actinic Keratosis, Photodynamic Therapy

Brief summary

The goal of this clinical trial is to see if shorter Photodynamic Therapy (PDT) treatment times will still be effective at treating actinic keratoses (AK) while reducing or eliminating the pain that patients sometimes experience during conventional PDT treatment. The main questions it aims to answer are: * Will the application of the nanoemulsion (10% ALA gel), in the absence of occlusion, still achieve significant inflammation and lesion clearance? * Will shortened incubation times of Ameluz still achieve significant inflammation and lesion clearance? * Will the new test regimens achieve reduced pain during illumination? * Will the new test regimens be safe? Participants will be randomly assigned to one of three treatment regimens, which will determine the length of time that the topical medication will incubate on the face before red light exposure in PDT treatments. The incubation period will be either 10 minutes, 20 minutes, or 60 minutes.

Interventions

DRUGTopical aminolevulinate (10% ALA gel)

10% ALA gel to the entire face, without occlusion, followed by a prespecified incubation period

Illumination of red light of narrow spectrum of 635 nm with a light dose of approximately 37 J/cm2

Sponsors

The Cleveland Clinic
CollaboratorOTHER
Biofrontera Inc.
CollaboratorINDUSTRY
Case Comprehensive Cancer Center
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Minimum of 10 actinic keratoses lesions on the face. * Female subjects must not become pregnant during the study * Subjects must be able to understand and willing to sign a written informed consent document.

Exclusion criteria

* Pregnant or nursing. * 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.

Design outcomes

Primary

MeasureTime frameDescription
Treatment Efficacy Based on Participant AK Lesion ClearanceLesion clearance at Visit 3 (month 2) and at Visit 4 (month 6)To test the hypothesis that a short-contact PDT protocol with Ameluz and red light will produce lesion clearance outcomes that are statistically non-inferior to the traditional, painful protocol. This will be measured by Clinical Efficacy, which will be based on the AK lesion counts and lesion clearance rate after two treatments.
Differences in Pain Level Reported Throughout Exposure to Red LightPain measured during illumination with red light (during a 10 min period) at Visit 1 (Day 3) and at Visit 3 (Month 2)Pain will be reported by the participants during illumination will be measured on a subjective 11-point visual-analog scale (VAS scale 0= no pain, 10 = intolerable pain)

Secondary

MeasureTime frameDescription
Patient Satisfaction Survey as Measured by Treatment Outcome Score6 monthsTreatment score on a scale of 0 to 5, where 0 indicates extremely dissatisfied and 5 indicates extremely satisfied.
Patient Satisfaction Survey as Measured by Cosmetic Outcome ScoreAt month 6Cosmetic score on a scale of 0 to 5, where 0 indicates extremely dissatisfied and 5 indicates extremely satisfied.
Number of Participant Reported Adverse Events and Side EffectsUp to 6 days (Day 6) after Visit 1Overall AE Profile and Safety of treatment will be measured using an Adverse Events- Patients' side effects log and Investigator assessment.

Countries

United States

Participant flow

Recruitment details

A total of 10 subjects are enrolled for each of the study arms A, B, and C.

Participants by arm

ArmCount
Regimen A
Apply topical aminolevulinic acid gel and incubate for 10 minutes prior to red light source Topical aminolevulinate (10% ALA gel): 10% ALA gel to the entire face, without occlusion, followed by a prespecified incubation period Red light illumination: Illumination of red light of narrow spectrum of 635 nm with a light dose of approximately 37 J/cm2
10
Regimen B
Apply topical aminolevulinic acid gel and incubate for 20 minutes prior to red light source Topical aminolevulinate (10% ALA gel): 10% ALA gel to the entire face, without occlusion, followed by a prespecified incubation period Red light illumination: Illumination of red light of narrow spectrum of 635 nm with a light dose of approximately 37 J/cm2
10
Regimen C
Apply topical aminolevulinic acid gel and incubate for 60 minutes prior to red light source Topical aminolevulinate (10% ALA gel): 10% ALA gel to the entire face, without occlusion, followed by a prespecified incubation period Red light illumination: Illumination of red light of narrow spectrum of 635 nm with a light dose of approximately 37 J/cm2
10
Total30

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyAdverse Event001

Baseline characteristics

CharacteristicRegimen ARegimen BRegimen CTotal
Age, Continuous69.3 years
STANDARD_DEVIATION 7.4
69.9 years
STANDARD_DEVIATION 7
71.2 years
STANDARD_DEVIATION 5.8
70.1 years
STANDARD_DEVIATION 0.97
AK lesions54.8 Lesions
STANDARD_DEVIATION 24.3
37.1 Lesions
STANDARD_DEVIATION 17.3
46.3 Lesions
STANDARD_DEVIATION 17.3
46.07 Lesions
STANDARD_DEVIATION 8.85
AKs previously10 Participants10 Participants10 Participants30 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants1 Participants0 Participants1 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
9 Participants9 Participants9 Participants27 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
1 Participants0 Participants1 Participants2 Participants
History of skin cancer9 Participants8 Participants7 Participants24 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
10 Participants10 Participants10 Participants30 Participants
Sex: Female, Male
Female
1 Participants0 Participants3 Participants4 Participants
Sex: Female, Male
Male
9 Participants10 Participants7 Participants26 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 100 / 100 / 10
other
Total, other adverse events
0 / 100 / 101 / 10
serious
Total, serious adverse events
0 / 100 / 100 / 10

Outcome results

Primary

Differences in Pain Level Reported Throughout Exposure to Red Light

Pain will be reported by the participants during illumination will be measured on a subjective 11-point visual-analog scale (VAS scale 0= no pain, 10 = intolerable pain)

Time frame: Pain measured during illumination with red light (during a 10 min period) at Visit 1 (Day 3) and at Visit 3 (Month 2)

ArmMeasureGroupValue (MEAN)Dispersion
Regimen ADifferences in Pain Level Reported Throughout Exposure to Red LightPain at visit 10.70 score on a scaleStandard Error 0.32
Regimen ADifferences in Pain Level Reported Throughout Exposure to Red LightPain at visit 30.20 score on a scaleStandard Error 0.21
Regimen BDifferences in Pain Level Reported Throughout Exposure to Red LightPain at visit 10.10 score on a scaleStandard Error 0.11
Regimen BDifferences in Pain Level Reported Throughout Exposure to Red LightPain at visit 30.30 score on a scaleStandard Error 0.16
Regimen CDifferences in Pain Level Reported Throughout Exposure to Red LightPain at visit 14.7 score on a scaleStandard Error 0.65
Regimen CDifferences in Pain Level Reported Throughout Exposure to Red LightPain at visit 32.22 score on a scaleStandard Error 0.68
Primary

Treatment Efficacy Based on Participant AK Lesion Clearance

To test the hypothesis that a short-contact PDT protocol with Ameluz and red light will produce lesion clearance outcomes that are statistically non-inferior to the traditional, painful protocol. This will be measured by Clinical Efficacy, which will be based on the AK lesion counts and lesion clearance rate after two treatments.

Time frame: Lesion clearance at Visit 3 (month 2) and at Visit 4 (month 6)

ArmMeasureGroupValue (NUMBER)
Regimen ATreatment Efficacy Based on Participant AK Lesion ClearanceLesion clearance rate at Visit 359 percentage of AK lesions
Regimen ATreatment Efficacy Based on Participant AK Lesion ClearanceLesion clearance rate at Visit 476 percentage of AK lesions
Regimen BTreatment Efficacy Based on Participant AK Lesion ClearanceLesion clearance rate at Visit 334 percentage of AK lesions
Regimen BTreatment Efficacy Based on Participant AK Lesion ClearanceLesion clearance rate at Visit 474 percentage of AK lesions
Regimen CTreatment Efficacy Based on Participant AK Lesion ClearanceLesion clearance rate at Visit 343 percentage of AK lesions
Regimen CTreatment Efficacy Based on Participant AK Lesion ClearanceLesion clearance rate at Visit 482 percentage of AK lesions
Secondary

Number of Participant Reported Adverse Events and Side Effects

Overall AE Profile and Safety of treatment will be measured using an Adverse Events- Patients' side effects log and Investigator assessment.

Time frame: Up to 6 days (Day 6) after Visit 1

ArmMeasureGroupValue (NUMBER)
Regimen ANumber of Participant Reported Adverse Events and Side EffectsSide effects9 Number of events
Regimen ANumber of Participant Reported Adverse Events and Side EffectsAdverse events0 Number of events
Regimen BNumber of Participant Reported Adverse Events and Side EffectsAdverse events0 Number of events
Regimen BNumber of Participant Reported Adverse Events and Side EffectsSide effects10 Number of events
Regimen CNumber of Participant Reported Adverse Events and Side EffectsAdverse events2 Number of events
Regimen CNumber of Participant Reported Adverse Events and Side EffectsSide effects9 Number of events
Secondary

Patient Satisfaction Survey as Measured by Cosmetic Outcome Score

Cosmetic score on a scale of 0 to 5, where 0 indicates extremely dissatisfied and 5 indicates extremely satisfied.

Time frame: At month 6

ArmMeasureGroupValue (NUMBER)
Regimen APatient Satisfaction Survey as Measured by Cosmetic Outcome ScorePercentage of participants giving a score of 20 percentage of patients
Regimen APatient Satisfaction Survey as Measured by Cosmetic Outcome ScorePercentage of participants giving a score of 310 percentage of patients
Regimen APatient Satisfaction Survey as Measured by Cosmetic Outcome ScorePercentage of participants giving a score of 570 percentage of patients
Regimen APatient Satisfaction Survey as Measured by Cosmetic Outcome ScorePercentage of participants giving a score of 420 percentage of patients
Regimen APatient Satisfaction Survey as Measured by Cosmetic Outcome ScorePercentage of participants giving a score of 10 percentage of patients
Regimen BPatient Satisfaction Survey as Measured by Cosmetic Outcome ScorePercentage of participants giving a score of 310 percentage of patients
Regimen BPatient Satisfaction Survey as Measured by Cosmetic Outcome ScorePercentage of participants giving a score of 550 percentage of patients
Regimen BPatient Satisfaction Survey as Measured by Cosmetic Outcome ScorePercentage of participants giving a score of 440 percentage of patients
Regimen BPatient Satisfaction Survey as Measured by Cosmetic Outcome ScorePercentage of participants giving a score of 20 percentage of patients
Regimen BPatient Satisfaction Survey as Measured by Cosmetic Outcome ScorePercentage of participants giving a score of 10 percentage of patients
Regimen CPatient Satisfaction Survey as Measured by Cosmetic Outcome ScorePercentage of participants giving a score of 10 percentage of patients
Regimen CPatient Satisfaction Survey as Measured by Cosmetic Outcome ScorePercentage of participants giving a score of 20 percentage of patients
Regimen CPatient Satisfaction Survey as Measured by Cosmetic Outcome ScorePercentage of participants giving a score of 589 percentage of patients
Regimen CPatient Satisfaction Survey as Measured by Cosmetic Outcome ScorePercentage of participants giving a score of 311 percentage of patients
Regimen CPatient Satisfaction Survey as Measured by Cosmetic Outcome ScorePercentage of participants giving a score of 40 percentage of patients
Secondary

Patient Satisfaction Survey as Measured by Treatment Outcome Score

Treatment score on a scale of 0 to 5, where 0 indicates extremely dissatisfied and 5 indicates extremely satisfied.

Time frame: 6 months

ArmMeasureGroupValue (NUMBER)
Regimen APatient Satisfaction Survey as Measured by Treatment Outcome ScorePercentages of patients giving a score of 20 percentage of patients
Regimen APatient Satisfaction Survey as Measured by Treatment Outcome ScorePercentages of patients giving a score of 310 percentage of patients
Regimen APatient Satisfaction Survey as Measured by Treatment Outcome ScorePercentages of patients giving a score of 580 percentage of patients
Regimen APatient Satisfaction Survey as Measured by Treatment Outcome ScorePercentages of patients giving a score of 410 percentage of patients
Regimen APatient Satisfaction Survey as Measured by Treatment Outcome ScorePercentages of patients giving a score of 10 percentage of patients
Regimen BPatient Satisfaction Survey as Measured by Treatment Outcome ScorePercentages of patients giving a score of 310 percentage of patients
Regimen BPatient Satisfaction Survey as Measured by Treatment Outcome ScorePercentages of patients giving a score of 560 percentage of patients
Regimen BPatient Satisfaction Survey as Measured by Treatment Outcome ScorePercentages of patients giving a score of 430 percentage of patients
Regimen BPatient Satisfaction Survey as Measured by Treatment Outcome ScorePercentages of patients giving a score of 20 percentage of patients
Regimen BPatient Satisfaction Survey as Measured by Treatment Outcome ScorePercentages of patients giving a score of 10 percentage of patients
Regimen CPatient Satisfaction Survey as Measured by Treatment Outcome ScorePercentages of patients giving a score of 10 percentage of patients
Regimen CPatient Satisfaction Survey as Measured by Treatment Outcome ScorePercentages of patients giving a score of 20 percentage of patients
Regimen CPatient Satisfaction Survey as Measured by Treatment Outcome ScorePercentages of patients giving a score of 589 percentage of patients
Regimen CPatient Satisfaction Survey as Measured by Treatment Outcome ScorePercentages of patients giving a score of 30 percentage of patients
Regimen CPatient Satisfaction Survey as Measured by Treatment Outcome ScorePercentages of patients giving a score of 411 percentage of patients

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026