Cited by 196Nonmelanoma Skin Cancer StudiesPhotodynamic Therapy Research StudiesSkin Protection and Aging

A Randomized Multicenter Study to Compare Two Treatment Regimens of Topical Methyl Aminolevulinate (Metvix ® )‐PDT in Actinic Keratosis of the Face and Scalp

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Tarstedt, Mikael, Rosdahl, Inger, Berne, Berit, Svanberg, Katarina, Wennberg, Ann‐Marie·2005·Acta Dermato-Venereologica

Abstract

Photodynamic therapy (PDT) with topical methyl aminolevulinate (MAL) administered in two treatment sessions separated by 1 week is an effective treatment for actinic keratoses. This open prospective study compared the efficacy and safety of MAL-PDT given as a single treatment with two treatments of MAL-PDT 1 week apart. Two hundred and eleven patients with 413 thin to moderately thick actinic keratoses were randomized to either a single treatment with PDT using topical MAL (regimen I; n=105) or two treatments 1 week apart (regimen II; n=106). Each treatment involved surface debridement, application of Metvix cream (160 mg/g) for 3 h, followed by illumination with red light using a light-emitting diode system (peak wavelength 634+/-3 nm, light dose 37 J/cm2). Thirty-seven lesions (19%) with a non-complete response 3 months after a single treatment were re-treated. All patients were followed up 3 months after the last treatment. A total of 400 lesions, 198 initially treated once and 202 treated twice, were evaluable. Complete response rate for thin lesions after a single treatment was 93% (95% CI=87-97%), which was similar to 89% (82-96%) after repeated treatment. Response rates were lower after single treatment of thicker lesions (70% (60-78%) vs 84% (77-91%)), but improved after repeated treatment (88% (82-94%)). The conclusion of this study is that single treatment with topical MAL-PDT is effective for thin actinic keratosis lesions; however, repeated treatment is recommended for thicker or non-responding lesions.

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Crossref · 10.1080/00015550510032887

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  • Compared with cryotherapy for actinic keratosis MAL-PDT was found to have a better or similar effectiveness (complete response rate 68%-75% after single treatment).

    “Compared with cryotherapy for actinic keratosis MAL-PDT was found to have a better or similar effectiveness (complete response rate 68%–75% after single treatment) [129,130].”

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Authors
Tarstedt, M., Rosdahl, I., Berne, B., Svanberg, K., & Wennberg, A.
Affiliations
Karlstad Central Hospital (SE)
Venue
Acta Dermato-Venereologica
Published
2005-09-01
Volume
85
Issue
5
Pages
424-428
ISSN
0001-5555 (ISSN-L)
OpenAlex
W2151481608
Cited by
196
References
16
Citations by year
2026: 1 · 2025: 3 · 2024: 4 · 2023: 5 · 2022: 4 · 2021: 3 · 2020: 4 · 2019: 9 · 2018: 10 · 2017: 5 · 2016: 6 · 2015: 23 · 2014: 11 · 2013: 8 · 2012: 11
FWCI
10.45
Type
journal article
Language
en
Open access
Locations
  • Acta Dermato Venereologica (publishedVersion)
  • PubMed (publishedVersion)
  • Lund University Publications (Lund University) (submittedVersion)
Topics
  • Health Sciences › Medicine › Epidemiology › Nonmelanoma Skin Cancer Studies
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Photodynamic Therapy Research Studies
  • Health Sciences › Medicine › Dermatology › Skin Protection and Aging
Keywords
actinic keratosis, methyl aminolevulinate, photodynamic therapy, treatment regimen comparison, lesion thickness, complete response rate, treatment safety
MeSH terms
Administration, Topical, Aged, Aminolevulinic Acid, Facial Dermatoses, Female, Humans, Keratosis, Male, Photochemotherapy, Scalp Dermatoses, Ultraviolet Rays, Photosensitizing Agents

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