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Completed

NCT Number: NCT00472108

Photodynamic Therapy (PDT) With Metvix Cream 160 mg/g Versus PDT With Placebo Cream in Participants With Primary Nodular Basal Cell Carcinoma

Photodynamic therapy (PDT) was the selective destruction of abnormal cells through light activation of a photosensitiser in the presence of oxygen. These cells accumulated more photosensitiser than normal cells. The photosensitiser generated reactive oxygen species upon illumination.

For skin diseases, there had been an increasing interest in using precursors of the endogenous photosensitiser protoporphyrin IX (PpIX). The most commonly used precursors have been 5-aminolevulinic acid (ALA) and its derivatives. The present test drug, Metvix, contained the methyl ester of ALA, which penetrated the lesions well and shows high lesion selectivity.

In vitro studies of animal and human tissues had shown significant intracellular formation of photoactive porphyrins after addition of Metvix. The increased photoactive porphyrins levels induced cytotoxic effects in tumour cells after photoactivation.

The primary objective was to compare PDT with Metvix cream to PDT with placebo cream in terms of participants complete response rates based on histologically verified disappearance of the lesions at 6 months after last treatment cycle. Secondary objectives was to compare the two treatments in terms of histological and clinical mean participant response weighted by the number of lesions within a participant, lesion response rates across participants, clinical complete participant response, cosmetic outcome and adverse events.

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Key information

Conditions

Basal Cell Carcinoma Carcinoma Carcinoma, Basal Cell Neoplasms Neoplasms by Histologic Type Neoplasms, Basal Cell Neoplasms, Glandular and Epithelial

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Clinical Research Specialists Inc, Santa Monica, California, United States

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About this study

A participants were randomised to PDT with Metvix cream or PDT with placebo cream. All eligible basal cell carcinoma (BCC) lesions within a participant received same treatment. All participants received two consecutive treatments one week apart. At the 3-months follow-up visit, lesions with no clinical response or progression were surgically excised. Lesions with partial response 50 percent (%) or greater reduction on lesion area) were re-treated; if they do not show complete response three months later, they were surgically excised. Lesions with complete response were surgically excised 6 months after the first or second PDT cycle. All excised tissue specimens were histologically examined.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

A participant with primary, nodular BCC lesion(s) suitable for entry is defined as a participant with

  • Clinically diagnosed primary nodular BCC lesion(s).
  • Histologically confirmed diagnosis of BCC.
  • BCC lesions suitable for simple excision surgery.
  • Males or females above 18 years of age.
  • Written informed consent.

Exclusion criteria

A participant that is ineligible for inclusion is a participant fulfilling any of the following criteria:

  • Participants with porphyria.
  • Participants with Gorlin's syndrome.
  • Participants with Xeroderma pigmentosum.
  • Participants concurrently receiving immunosuppressive medication.
  • Participants with a history of arsenic exposure.
  • Participants with BCC arising in a previous radiated area.
  • Known allergy to Metvix, a similar PDT compound or excipients of the cream.
  • Participation in other clinical studies either concurrently or within the last 30 days.
  • Pregnant or breast-feeding: All women of child-bearing potential must use adequate contraception (e.g. barrier methods, oral contraceptives or intrauterine device) during the treatment period and one month thereafter. In addition, they must have a negative pregnancy test prior to treatment..
  • Conditions associated with a risk of poor protocol compliance.

Lesion Exclusion Criteria:

  • A nodular BCC lesion in periorbital area, ears and nasolabial fold.
  • A nodular BCC lesion with the longest diameter less than 6 millimeter (mm) or larger than 15 mm in face/scalp, larger than 20 mm on extremities and neck and larger than 30 mm on truncus.
  • Pigmented nodular BCC lesion(s)
  • Morpheaform nodular BCC lesion(s).
  • Infiltrating nodular BCC lesion(s).
  • Prior treatment of the BCC lesion(s).

Treatment and study plan

Photodynamic Therapy (PDT)

Radiation

Metvix cream

Drug

placebo cream

Drug

Primary outcomes

  1. Number of Participants With Histologically Confirmed Complete Response

    Time frame: up to 9 months

    The histological complete response was defined as 100 percent (%) of the lesions within the participant having negative findings in the histological examination. Histological examination included evaluation of all the microscopical slides from the excised tissue for presence of malignant basal cells. Complete response was defined as complete disappearence of lesion. Number of participants with histologically confirmed complete response were reported.

Secondary outcomes

  1. Percentage of Lesions With Histologically Confirmed Complete Lesion Response

    Time frame: up to 9 months

    Histological response weight means no signs of malignant basal cells in all microscopical slides containing excised tissue. The histologically confirmed complete lesion response were reported.

  2. Percentage of Lesions With Clinically Confirmed Complete Lesion Response

    Time frame: up to 9 months

    Clinically confirmed complete lesion response means no signs of malignant basal cells in all microscopical slides containing excised tissue. The clinically confirmed complete lesion response were reported.

  3. Histological Verified Lesions With Complete Response

    Time frame: up to 9 months

    Histological confirmed complete lesion response means no signs of malignant basal cells in all microscopical slides containing excised tissue. Number of histologically confirmed lesions with complete response were reported.

  4. Clinically Verified Lesions With Complete Response

    Time frame: up to 9 months

    Clinically confirmed complete lesion response means no signs of malignant basal cells in all microscopical slides containing excised tissue. Number of clinically confirmed lesions with complete response were reported.

  5. Number of Participants With Clinically Evaluated Complete Response

    Time frame: up to 9 months

    The on-site investigator evaluated the lesion response by comparing to the lesion size before and after treatment. Complete response here means complete disappearance of a lesion. Number of participants for whom one or more lesions had a complete response were reported.

  6. Number of Participants With Cosmetic Outcome Assessed by Investigator and Participants

    Time frame: up to 9 months

    Cosmetic outcomes were assessed with regards to occurrence of the following signs or symptoms; scarring, atrophy, induration, redness or change in pigmentation. Cosmetic outcome were graded as excellent, good, fair or poor where: excellent: no scarring, atrophy or induration, no or slight occurrence of redness or change in pigmentation compared to adjacent skin; good: no scarring, atrophy or induration but moderate redness or change in pigmentation compared to adjacent skin; fair: slight to moderate occurrence of scarring, atrophy or induration and Poor: extensive occurrence of scarring, atrophy or induration. The investigator and participants assessed the cosmetic outcome for each lesion has responded completely. Participants were asked to evaluate evaluate the cosmetic outcome according to the same categories: excellent, good, fair cosmetic outcome. Number of participants with summarized cosmetic outcomes for all symptoms as assessed by Investigator and participants were reported.

  7. Number of Participants With Adverse Events and Serious Adverse Events (AEs)

    Time frame: up to 6 months

    Adverse event (AE) was defined as any untoward medical occurrence in a participant, which does not necessarily have causal relationship with treatment. A serious AE was defined as an AE that resulted in any of the following outcomes: death; life threatening; persistent/significant disability/incapacity; initial or prolonged in participant hospitalization; congenital anomaly/birth defect or was otherwise considered medically important. TEAEs: events between first dose of study drug that were absent before treatment/that worsened relative to pre-treatment state. TEAEs included both serious TEAEs and non-serious TEAEs. Number of participants with AEs and serious AEs were reported.

Sponsors and collaborators

Lead sponsor

Galderma R&D

Industry

Registry information

Official study title

A Multicenter, Phase III, Double Blind Study of Photodynamic Therapy (PDT) With Metvix 160 mg/g Cream in Comparison to PDT With Placebo Cream in Patients With Primary Nodular Basal Cell Carcinoma

Important dates

Study start
2000
Primary completion
2002
Study completion
2002
First posted
May 11, 2007
Registry last updated
Aug 5, 2024

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

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This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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