Clinical Trials Logo

Clinical Trial Summary

Skin cancer is the most common cancer in Caucasians, and a basal cell carcinoma (BCC) being the most common skin cancer with around 44,000 new tumours per year, and its incidence is still rising. In the past it has been a disease of the elderly patient but as a consequence of recreational sun exposure and tanning beds, more young patients develop a skin cancer as well. There are different subtypes of BCC and most subtypes are treated by surgical excision. Nowadays, non-invasive techniques as photodynamic therapy (PDT) are common practice to treat superficial BCC (sBCC). Because of these techniques treatment by surgical excision can be avoided with the possibility of complications and scar formation. Both 5-aminolevulino acid (5-ALA) and the more lipophilic methyl aminolevulinate (MAL) can be used as a precursor of the photosensitiser. These agents generate an excess of protoporphyrin IX in metabolic active cells, which are illuminated by a specific light source leading to release of reactive oxygen radicals in tissue. The result is apoptosis and necrosis of tumour cells. At the moment, two treatment protocols are used in the Netherlands: the fractionated 5-ALA 20% (Fagron) protocol according to de Haas and the MAL (Metvix, Galderma) protocol. Because MAL was first marketed and registered as a treatment option for premalignant and superficial malignancies most hospitals in the Netherlands use this topical agent. However, there is no evidence which of the 2 agents is more (cost-)effective and/ or preferred by patients.

Objective: to determine which treatment is the most effective treatment in terms of prevention of treatment failure, cost saving and patients preference when comparing fractionated 5-ALA 20% PDT versus MAL PDT in 2 treatment sessions.


Clinical Trial Description

- Basal cell carcinoma throughout the world

Skin cancer is the most common form of cancer, with basal cell carcinoma (BCC) being the most common form of all skin cancers, and the incidence is still rising.1,2 Of all types of BCC, superficial basal cell carcinoma (sBCC), is the histopathologic subtype with the fastest growing incidence, especially on the trunk in younger patients.3-5 It is a common health problem and although there is no chance of metastasis it can lead to more aggressive forms of BCC with the ability to cause serious local destruction.

- Treatment options

The DBC (diagnose behandel combinatie) cost price, the amount received for diagnostic and treatment of one BCC, for surgical excision is partly free negotiable between each hospital and health insurances. Only the DBC cost price of patients whose health insurance has no contract with the hospital is public for everyone. This leads to around 18 million euro (based on a cost price of 400.00 euro for 44,000 new BCCs per year) that is yearly spent on the surgical treatment of BCC in the Netherlands and cost will only increase in future with the growing incidence.6 For most BCC subtypes the only effective treatment is surgery but for sBCC other non-invasive treatments like photodynamic therapy (PDT) are suitable. It is well accepted in today's dermatologic practice that surgical excision can be considered as over-treatment for sBCC.7-9 PDT is superior to surgical excision in primary sBCC of any size in low-risk sites.9 As a consequence unnecessary anaesthesia and incisions are avoided thereby preventing side-effects, such as scars, haematomas or functional disruption, and healthy tissue is preserved. MAL is a worldwide registered agent for the use of topical PDT in sBCC while 5-ALA is not registered in the European Union. In the Netherlands both fractionated 5-ALA 20% and MAL PDT in 2 sessions are used as treatment for sBCC. Although there are studies showing the effectiveness of both treatment regimens, the effectiveness, costs and patient preferences have never been studied in a prospective randomised trial.

- Developments in treatment: photodynamic therapy

PDT has become increasingly implemented in standard care for sBCC in the last years.8-10 Nowadays, in the Maastricht University Medical Centre, about 60% of patients are treated with PDT. Similar situations are found in the Erasmus MC Rotterdam and the VieCuri Medical Centre Venlo/Venray. On national level, around two thirds of patients are treated with MAL PDT in 2 sessions and one third with fractionated 5-ALA 20% PDT. This distribution is historically determined and not based on evidence based research.

- 5-ALA 20% PDT versus MAL PDT

There are only a few randomised controlled studies on treatment of the most common skin cancer.11 Choice of PDT treatment with fractionated 5-ALA 20% or MAL in 2 sessions often depends on the experience and choice of the physician or the availability of the precursor in a hospital. World-wide, most studies are performed with MAL and it has been accepted as the standard of care in PDT.12 However, according to the literature, the effectiveness in terms of clearance rates is in different studies lower for MAL in two sessions compared to fractionated 5-ALA 20% PDT: 79% versus 97% intention to treat (ITT) after one year in sBCC.13,14 Contra dictionary, MAL has the theoretical benefit of being more and faster absorbed in the cell than 5-ALA 20% and, thereby, should generate a higher production of protoporphyrin IX. In addition MAL has higher selectivity for tumour cells, inducing fewer side-effects in normal tissue. 15,16 This discrepancy between theoretical working mechanism and clearance rates needs further clinical research of the effectiveness of both treatments.

PDT is a hospital administered treatment modality during which patients have to come to the hospital one day (fractionated 5-ALA 20%) or two days one week apart (MAL in 2 sessions). Patient compliance could be higher with fractionated 5-ALA 20% than with MAL in 2 sessions because patients have to visit the hospital a second time. At some parts of the body patients experience a variable burning pain sensation during PDT which might influence completing the treatment. Kuijpers et al. found no significant differences in pain scores between ALA-PDT in 2 sessions and MAL PDT in 2 sessions.17 We expect 5-ALA 20% PDT to have more side-effects in our study as patients are treated twice on the same day.

Furthermore it is important to take into consideration the differences in patient acceptability costs (see 'economic evaluation').18 A well-designed study comparing the two topical PDT treatment modalities: fractionated 5-ALA 20% and MAL in 2 sessions will provide the answers needed to establish the position of the two modalities in the treatment of patients with sBCC. The conclusions from the proposed study can serve as a basis for updating guidelines for the treatment of sBCC to catch up with recent developments in clinical practice. ;


Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Investigator), Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT01491711
Study type Interventional
Source Maastricht University Medical Center
Contact Nicole WJ Kelleners-Smeets, MD, PhD
Phone 0031433877295
Email n.kelleners.smeets@mumc.nl
Status Recruiting
Phase Phase 4
Start date August 2013
Completion date April 2015

See also
  Status Clinical Trial Phase
Active, not recruiting NCT04552990 - Use of Jet-injection in Photodynamic Therapy for Basal Cell Carcinoma Phase 2
Active, not recruiting NCT03573401 - Study to Evaluate the Safety and Efficacy of BF-200 ALA (Ameluz®) and BF-RhodoLED® in the Treatment of Superficial Basal Cell Carcinoma (sBCC) With Photodynamic Therapy (PDT). Phase 3
Completed NCT03012009 - Laser Assisted Drug Delivery in the Treatment of Superficial Non Melanoma Skin Cancer: a Randomized Controlled Trial N/A
Completed NCT02270645 - Randomized Pilot Study of Treatment for BCC Using the Multiplex 595/1064 nm Laser N/A
Completed NCT00469417 - Metvix PDT Versus Cryotherapy in Patients With Primary Superficial Basal Cell Carcinoma Phase 3
Recruiting NCT05381597 - 5-Fluorouracil and Calcipotriene for Treatment of Low Grade Skin Cancer Phase 2/Phase 3
Terminated NCT00994240 - Cure Rates of Superficial Basal Cell Carcinoma (BCC) EDC N/A
Completed NCT00604890 - Dose-Ranging Clinical Trial of Topical Creams Containing API 31510 for the Treatment of Superficial Basal Cell Carcinoma Phase 1/Phase 2
Completed NCT00189306 - Open-label Study to Evaluate Clearance of Superficial Basal Cell Carcinoma After Use of Imiquimod 5% Cream Phase 3
Recruiting NCT05157763 - A Study to Evaluate the Safety and Efficacy of EscharEx (EX-02) in the Treatment of Basal Cell Carcinoma Phase 1/Phase 2
Recruiting NCT04744935 - Optical Coherence Tomography Guided Laser Treatment of Basal Cell Carcinoma N/A
Completed NCT05628714 - A Patient Decision Aid for Patients With Superficial Basal Cell Carcinoma
Completed NCT00432185 - To Determine the Maximum Tolerated Dose Level (MTD) of PEP005 Topical Gel in Patients With sBCC Phase 2
Completed NCT04470726 - Safety and Efficacy of AIV001 on Low Risk Basal Cell Carcinoma Phase 1/Phase 2
Completed NCT01325688 - PEP005 Gel - Evaluation of the Safety and Efficacy of Ingenol Mebutate Gel on a Superficial Basal Cell Carcinoma on the Trunk or Extremities Phase 2
Recruiting NCT05713760 - Proof of Concept Study to Access Superficial Basal Cell Carcinoma in Adults Phase 2