Epidermolysis Bullosa Dystrophica Clinical Trial
Official title:
A Randomized, Double-Blind, Placebo-Controlled, Crossover, Pilot Stage Clinical Trial Evaluating CACIPLIQ20 in Wound Healing in Subjects With Epidermolysis Bullosa
Epidermolysis bullosa (EB) is a group of inherited disorders characterized by fragility of the skin and mucous membranes within the basement membrane zone. It is characterized by moderate to excessive fragility of epithelial tissues with prototypic blistering or erosions following minimal trauma (mechanobullous dermatoses). The chronic pain associated with EB, the hardship placed on caregivers, and the high risk for complications places a considerable psychosocial burden on both patients and their families. Despite considerable research to advance the understanding of EB pathophysiology, no treatments have been approved by regulatory authorities to date. Heparan sulfates are key elements of the Extra Cellular Matrix scaffold which act both as linkers, bridging structural matrix proteins such as collagens, laminin and as storage and protector sites to communication peptides, playing a pivotal role in the regulation of cell proliferation, migration and differentiation that are all required for tissue regeneration and repair. CACIPLIQ20 is a bioengineered structural analogue of heparan sulfate glycosaminoglycans. Numerous experimental studies have provided strong evidence that CACIPLIQ20 promotes tissue regeneration by reconstructing the cellular microenvironment following tissue injury. CACIPLIQ20 is currently a class III CE marked medical device (NSAI-0050 CE MARK ECDECNL-A4 (6) and EC Annex II of the directive. NL-A4 (7)) with the following indications: Chronic ulcers showing no tendency to heal after 6 months of standard care, or still unhealed after 12 months: - Pressure ulcers. - Peripheral arterial disease (such as Stage IV Leriche & Fontaine) ulcers. - Diabetic ulcers (including amputation). Preliminary results from several published and unpublished case reports (Al Malak and Barritault, 2012; Bodemer, unpublished observations) suggest that CACIPLIQ20 is safe and can improve wound healing and reduce pain in patients with epidermolysis bullosa. The goal of the MATHBULL study is to confirm preliminary observations in a placebo-controlled double-blind pilot study. The results of this pilot study will help to design a pivotal study.
The patients are outpatients at inclusion and may be already followed by the investigators, and they have not yet been treated with CACIPLIQ20 for at least one month. These patients will be randomly allocated (1:1 ratio) to Arm A and B. Every patient will have two treatment periods. Arm A will receive at first CACIPLIQ20 for 1 month, followed by 1-month washout then 1-month Placebo, and the reverse sequence (Placebo followed by CACIPLIQ20) in Arm B. The sponsor, investigator and patient will remain blinded to the treatment Arm in which a patient will be randomized until the end of the study and database lock. Two baselines will be defined before the two treatment periods, Baseline 1 at inclusion/before treatment period 1, and Baseline 2 at the end of washout/before treatment period 2. For each patient, all active wounds will be treated by CACIPLIQ20 or Placebo, which will be added to the best standard of care decided by the participating physicians. Treatments will be provided in indistinguishable spray bottles, labelled with treatment numbers using a randomization list provided by an independent statistician. CACIPLIQ20 or Placebo will be applied every 3 to 4 days for 30 days. Patients will be followed every month according to investigators' standard practices. At least five visits will be programmed during the study, including Inclusion Visit, End of Treatment Period 1 Visit at Month 1, End of Washout Visit at Month 2, End of Treatment Period 2 Visit at Month 3, End of Study Visit at Month 4. In addition to these visits, two phone calls will be organized 15 days after the start of each treatment period to identify potential adverse events. At each visit, the investigator will take pictures of treated wounds with an imaging device (Silhouette®), in order to assess the total lesioned skin surface. ;
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