The aim of the study is to assess safety, tolerability and preliminary efficacy of XSTEM-VLU when administered as a single topical dose to patients with difficult-to-heal venous leg ulcers. The study is randomised and the patients will receive either XSTEM-VLU or vehicle as add on to standard wound care. The patients will be followed weekly for 10 weeks after treatment. At 4 months after treatment, the patients will return to the clinic for an end-of-study visit.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
6
Clinical Trial Center (CTC)
Gothenburg, Sweden
Clinical Trial Consultants (CTC) Karolinska
Stockholm, Sweden
Safety and tolerability: Adverse events (AEs)
Frequency, seriousness and intensity of AEs assessed by the Common Terminology Criteria for Adverse Events (CTCAE)
Time frame: From study start to 4 months after dosing
Safety and tolerability: Local tolerability
Local tolerability evaluated by direct inspection by need for debridement (Yes/No) and clinical signs of wound infection (Yes/No)
Time frame: From study start to 4 months after dosing
Safety and tolerability: Number of participants with abnormal 12-lead electrocardiogram (ECG)
Abnormal findings assessed by the Investigator as clinically significant will be reported as AEs.
Time frame: From study start to 4 months after dosing
Safety and tolerability: Number of participants with abnormal vital signs
Vital signs include blood pressure, pulse and body temperature. Abnormal findings assessed by the Investigator as clinically significant will be reported as AEs.
Time frame: From study start to 4 months after dosing
Safety and tolerability: Number of participants with abnormal laboratory test results
Laboratory tests include clinical chemistry, haematology and coagulation parameters. Abnormal values assessed by the Investigator as clinically significant will be reported as AEs.
Time frame: From study start to 4 months after dosing
Safety and tolerability: Number of participants with abnormal physical examination findings
Abnormal findings assessed by the Investigator as clinically significant will be reported as AEs.
Time frame: From study start to 4 months after dosing
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Preliminary efficacy: Wound area reduction (absolute and percentage) compared to baseline
Time frame: From study start to 4 months after dosing
Preliminary efficacy: Proportion of patients with re-epithelialization of >=95% and >=50% of the wound area measured at baseline
Time frame: From study start to 4 months after dosing
Preliminary efficacy: Time to re-epithelialization of >=95% and >=50% of the wound area measured at baseline
Time frame: From study start to 4 months after dosing
Preliminary efficacy: Pain for target wound and the affected leg using Visual Analogue Scale (VAS)
The VAS consists of a 100 mm line from no pain (0 mm) to worst possible pain (100 mm).
Time frame: From study start to 4 months after dosing
Preliminary efficacy: Scar formation assessed by the Patient and Observer Scar Assessment Scale (POSAS)
The POSAS is divided into two scales (for patient and for observer), each with six items scored numerically (1 -10). The lowest score "1" corresponds to normal skin.
Time frame: At week 10 and at 4 months after dosing