Evaluation of Safety and Efficacy of BF-200 ALA for the Treatment of Actinic Keratosis With Photodynamic Therapy

Biofrontera Bioscience GmbH571 enrolled

Overview

The aim of the study is to evaluate the non-inferiority of BF-200 ALA (Ameluz) in the treatment of actinic keratosis (AK) with photodynamic therapy (PDT) compared to Metvix.

This was a randomized, observer-blind, multinational, comparator and placebo-controlled parallel group, (3:3:1 ratio) study to compare the efficacy and safety of BF-200 ALA with the comparator Metvix® (methyl-\[5-amino-4-oxopentanoate\]) and placebo, for the treatment of AK with PDT.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Enrollment

571

Conditions

Actinic Keratosis

Interventions

BF-200 ALADRUG

topical treatment for photodynamic therapy combining drug application and after a 3 h incubation subsequent illumination with a broad or narrow spectrum light source.

MAL CreamDRUG

topical treatment for photodynamic therapy combining drug application and after a 3 h incubation subsequent illumination with a broad or narrow spectrum light source.

VehicleDRUG

topical treatment for photodynamic therapy combining vehicle application and after a 3 h incubation subsequent illumination with a broad or narrow spectrum light source.

Eligibility

Sex: ALLMin age: 18 YearsMax age: 85 Years

Medical Language ↔ Plain English

Main Inclusion Criteria: * Written informed consent. * Men and women between 18 and 85 years of age. * 4-8 AK lesions of 0.5 to 1.5 cm diameter of mild to moderate intensity (Olsen grade 1 and 2) in the face and/or on the bald scalp. Lesions on the eyes, nostrils, ears and mouth were not considered for treatment during the planned study. * Target AK lesions were to be discrete and quantifiable; adjacent AK lesions were to show a minimum distance of 1.0 cm from one another. * Confirmation of AK by biopsy taken at screening. * Free of significant physical abnormalities (e.g., tattoos, dermatoses) in the potential treatment region that could have caused difficulty with examination or final evaluation. * Willingness to stop the use of moisturizers and any other topical treatments within the treatment region. * Good general health condition. * Healthy subjects and subjects with clinically stable medical conditions including, but not limited to the following diseases (controlled hypertension, diabetes mellitus type II, hypercholesterolemia, osteoarthritis) were permitted to be included in the study if the medication taken for the treatment of the disease did not match an exclusion criterion or was not specified as prohibited concomitant medication. * No extensive sunbathing or solarium use during the trial. * Negative pregnancy test at screening. Main exclusion criteria: * Known hypersensitivity to BF-200 ALA, MAL (methyl-aminolevulinic acid) and/or any of the ingredients of the formulations * Clinically significant medical conditions (tumor disease etc.) making implementation of the protocol or interpretation of the study results difficult * Presence of photodermatoses * Presence of other tumors in the treatment areas within the last 4 weeks * Start of treatment with phototoxic or photoallergic drugs within 8 weeks prior to screening * Current treatment with immunosuppression therapy * Hypersensitivity to porphyrins * Presence of porphyria * Presence of inherited or acquired coagulation defect * Any topical treatment within the treatment area within 12 weeks before PDT1 (first PDT Treatment) * Topical treatment with ALA or MAL outside the treatment area during participation in the study * None of the specified systemic treatments within the designated period before PDT1

Outcomes

Primary Outcomes

Percentage of Participants With Complete Response 12 Weeks After the Last Photodynamic Therapy (PDT), ITT

An overall complete responder was defined as a subject in whom all treated lesions were cleared (all lesions showing complete remission) 12 weeks after the last PDT. The outcome measure considered complete responders who were completely cleared 12 weeks after the first PDT and responders who were completely cleared 12 weeks after the second PDT if a re-treatment was necessary (in case of partial- or non-responding lesions 12 weeks after the first PDT)

Time frame: 12 weeks after the last PDT, up to 24 weeks after the first treatment

Percentage of Participants With Complete Response 12 Weeks After the Last Photodynamic Therapy (PDT), PP

Time frame: 12 weeks after the last PDT, up to 24 weeks after the first treatment

Percentage of Participants With Complete Response 12 Weeks After the Last Photodynamic Therapy (PDT) Illuminated With Narrow Spectrum Devices Only

Subgroup analysis of patients treated with a narrow spectrum device for PDT Illumination (\~630 nm). An overall complete responder was defined as a subject in whom all treated lesions were cleared (all lesions showing complete remission) 12 weeks after the last PDT. The outcome measure considered complete responders who were completely cleared 12 weeks after the first PDT and responders who were completely cleared 12 weeks after the second PDT if a re-treatment was necessary (in case of partial- or non-responding lesions 12 weeks after the first PDT)

Time frame: 12 weeks after the last PDT, up to 24 weeks after the first treatment

Secondary Outcomes

Data from ClinicalTrials.gov

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Percentage of Participants With Complete Response 3-4 Weeks After First Photodynamic Therapy (PDT)

A complete responder was defined as a subject in whom all treated lesions were cleared (all lesions showing complete remission) at 3-4 weeks after the first PDT.

Time frame: 3-4 weeks after the first PDT

Percentage of Participants With Complete Response 12 Weeks After First Photodynamic Therapy (PDT)

A complete responder was defined as a subject in whom all treated lesions were cleared (all lesions showing complete remission) at 12 weeks after the first PDT.

Time frame: 12 weeks after the first PDT

Percentage of Participants With Complete Response 3-4 Weeks After the Second Photodynamic Therapy (PDT)

A complete responder was defined as a subject in whom all treated lesions were cleared (all lesions showing complete remission) at 3-4 weeks after the second PDT. A second PDT was applied in case partial- or non-responding lesions remained 12 weeks after the first PDT.

Time frame: 3-4 weeks after the second PDT, 15-16 weeks after first treatment

Percentage of Participants With Complete Response 12 Weeks After Second Photodynamic Therapy (PDT)

A complete responder was defined as a subject in whom all treated lesions were cleared (all lesions showing complete remission) at 12 weeks after the second PDT. A second PDT was applied in case partial- or non-responding lesions remained 12 weeks after the first PDT.

Time frame: 12 weeks after the second PDT, 24 weeks after first treatment

Percentage of Participants With Complete Response 3-4 Weeks After Last Photodynamic Therapy (PDT)

A complete responder at week 3-4 after treatment was defined as a subject in whom all treated lesions were cleared (all lesions showing complete remission). This outcome measure considered patients who were completely cleared at 3-4 weeks after the last PDT which included complete responders 3-4 weeks after the first and complete responders 3-4 weeks after the second PDT ( a second PDT was applied in case of remaining lesions 12 weeks after the first PDT).

Time frame: 3-4 weeks after the last PDT, up to 16 weeks after the first treatment

Percentage of Participants With Partial Response at 3-4 Weeks After First Photodynamic Therapy (PDT)

Time frame: 3-4 weeks after the first PDT

Percentage of Participants With Partial Response at 12 Weeks After the First Photodynamic Therapy (PDT)

Time frame: 12 weeks after the first PDT

Percentage of Participants With Partial Response at 3-4 Weeks After the Second Photodynamic Therapy (PDT)

A partial responder was defined as a subject in whom at least 75% of the treated lesions were cleared (lesions showing complete remission). This outcome measure considers partial responders at 3-4 weeks after the second PDT. A second PDT was applied in case of partial- or non-responding lesions 12 weeks after the first PDT.

Time frame: 3-4 weeks after the second PDT, 15-16 weeks after first treatment

Percentage of Participants With Partial Response at 12 Weeks After the Second Photodynamic Therapy (PDT)

A partial responder was defined as a subject in whom at least 75% of the treated lesions were cleared (lesions showing complete remission). This outcome measure considers partial responders at 12 weeks after the second PDT. A second PDT was applied in case of partial- or non-responding lesions 12 weeks after the first PDT.

Time frame: 12 weeks after the second PDT, 24 weeks after first treatment

Percentage of Participants With Partial Response at 3-4 Weeks After Last Photodynamic Therapy (PDT)

A partial responder was defined as a subject in whom at least 75% of the treated lesions were cleared (lesions showing complete remission). This outcome measure considers partial responders at 3-4 weeks after last PDT. The outcome measure combined partial responders with at least 75% of lesions cleared at 3-4 weeks after the first PDT or after the second PDT (a second PDT was applied in case of partial- or non-responding lesions 12 weeks after the first PDT).

Time frame: 3-4 weeks after the last PDT, up to 16 weeks after the first treatment

Percentage of Participants With Partial Response at 12 Weeks After Last Photodynamic Therapy (PDT)

A partial responder was defined as a subject in whom at least 75% of the treated lesions were cleared (lesions showing complete remission). This outcome measure considers partial responders at 12 weeks after last PDT. The outcome measure combined partial responders with at least 75% of lesions cleared at 12 weeks after the first PDT and after the second PDT (a second PDT was applied in case of partial- or non-responding lesions 12 weeks after the first PDT) .

Time frame: 12 weeks after the last PDT, up to 24 weeks after first treatment

Complete Lesion Response Rate 3-4 Weeks After First Photodynamic Therapy (PDT)

Completely cleared individual lesions as defined at 3-4 weeks after first photodynamic therapy (PDT)

Time frame: 3-4 weeks after the first PDT

Complete Lesion Response Rate 12 Weeks After First Photodynamic Therapy (PDT)

Completely cleared individual lesions as defined at 12 weeks after the first photodynamic therapy (PDT).

Time frame: 12 weeks after the first PDT

Complete Lesion Response Rate 3-4 Weeks After the Second Photodynamic Therapy (PDT)

Completely cleared individual lesions as defined at 3-4 weeks after the second PDT. A second PDT was applied in case the individual lesion showed no or partial response12 weeks after first PDT.

Time frame: 3-4 weeks after the second PDT, 15-16 weeks after first treatment

Complete Lesion Response Rate 12 Weeks After Second PDT

Completely cleared individual lesions as defined at 12 weeks after second PDT. A second PDT was applied in case the individual lesion showed no or partial response 12 weeks after first PDT.

Time frame: 12 weeks after the second PDT, 24 weeks after first treatment

Complete Lesion Response Rate 3-4 Weeks After Last Photodynamic Therapy (PDT)

Completely cleared individual lesions defined at 3-4 weeks after the last PDT comprising of completely cleared individual lesions 3-4 weeks after the first and after the second PDT (a second PDT was applied in case lesions show no or partial response 12 weeks after the first PDT).

Time frame: 3-4 weeks after the last PDT, up to 16 weeks after first treatment

Complete Lesion Response Rate 12 Weeks After Last Photodynamic Therapy (PDT)

Completely cleared individual lesions 12 weeks after last PDT comprising of completely cleared individual lesions 12 weeks after the first or second PDT (a second PDT was applied in case individual lesions show no or partial response 12 weeks after first PDT).

Time frame: 12 weeks after the last PDT, up to 24 weeks after first treatment

Complete Lesion Response Rates 12 Weeks After Last Photodynamic Therapy (PDT) Illuminated With Narrow Spectrum Devices Only

Completely cleared individual lesions 12 weeks after last PDT comprising of individual cleared lesions 12 weeks after the first or second PDT. A second PDT was applied in case individual lesion showed no or partial response 12 weeks after the first PDT. Lesions were illuminated during photodynamic therapy with narrow spectrum devices only (\~630 nm).

Time frame: up to 12 weeks after the last PDT, up to 24 weeks after first treatment

Change From Baseline in Total Lesion Area 3-4 Weeks After the First Photodynamic Therapy (PDT)

Percentage of change from baseline in the lesion area of all treated lesions per subject (summation of sizes of all treated lesions) assessed at 3-4 weeks after the first PDT.

Time frame: 3-4 weeks after the first PDT

Change From Baseline in Total Lesion Area 12 Weeks After the First Photodynamic Therapy (PDT)

the change from baseline in the lesion area of all treated lesions per subject (summation of sizes of all treated lesions) assessed 12 weeks after the first PDT.

Time frame: 12 weeks after the first PDT

Change From Baseline in Total Lesion Area 3-4 Weeks After the Second Photodynamic Therapy (PDT)

the change from baseline in the lesion area of all treated lesions per subject (summation of sizes of all treated lesions) assessed 3-4 weeks after the second PDT. A second PDT was applied in case of non or partially responding lesions 12 weeks after first PDT.

Time frame: 3-4 weeks after the second PDT, 15-16 weeks after first treatment

Change From Baseline in Total Lesion Area 12 Weeks After Second Photodynamic Therapy (PDT)

the change from baseline in the lesion area of all treated lesions per subject (summation of sizes of all treated lesions) assessed 12 weeks after the second PDT. A second PDT was applied in case of non- or partially responding lesions 12 weeks after first PDT.

Time frame: 12 weeks after the second PDT, 24 after first treatment

Change From Baseline in Total Lesion Area 3-4 Weeks After Last Photodynamic Therapy (PDT)

the change from baseline in the lesion area of all treated lesions per subject (summation of sizes of all treated lesions) assessed at 3-4 weeks after last PDT, combining the changes from baseline in total lesion area of subjects 3-4 weeks after first PDT and second PDT (a second PDT was applied for subjects who showed non- or partially responding lesions 12 weeks after the first PDT).

Time frame: 3-4 weeks after the last PDT, up to 16 weeks after the first treatment

Change From Baseline in Total Lesion Area 12 Weeks After Last Photodynamic Therapy (PDT)

the change from baseline in the lesion area of all treated lesions per subject (summation of sizes of all treated lesions) assessed at 12 weeks after last PDT, combining the changes from baseline in total lesion area at 12 weeks after the first PDT and at 12 weeks after the second PDT (a second PDT was applied to subjects with non- or partially responding lesions 12 weeks after the first PDT).

Time frame: 12 weeks after the last PDT, up to 24 weeks after the first treatment

Overall Cosmetic Outcome of the Treated Skin 12 Weeks After Last Photodynamic Therapy (PDT) Compared to Baseline

The cosmetic outcome 12 weeks after the last PDT (12 weeks after 1st PDT for subjects who are completely cleared at this time point, 12 weeks after 2nd PDT for subjects retreated due to remaining lesions 12 weeks after 1st PDT) will be calculated on the basis of the skin quality assessment (skin surface, hyperpigmentation, hypopigmentation, mottled or irregular pigmentation, degree of scarring, and atrophy) upon visual examination (scale: 0= none, 1= mild, 2= moderate, 3=severe). The cosmetic outcome is rated as very good if the sum score of the previously mentioned ratings (all ratings for each sign added up) has improved by at least 2 points as compared to baseline; as good if the sum score has improved by at least 1 point as compared to baseline; as satisfactory if the sum score is identical to the one at baseline; as unsatisfactory if the sum score has worsened by 1 point compared to baseline and as impaired if the sum score has worsened by at least 2 points compared to baseline.

Time frame: 12 weeks after the last PDT, up to 24 weeks after first treatment

Local Skin Reactions During First Photodynamic Therapy (PDT-1)

Local skin reactions in the treatment area as assessed by the investigator during the first PDT (PDT-1)