Cell Therapy for Lower Limb Ulcers in Patients With Critical Limb Ischemia

Sponsor
UPECLIN HC FM Botucatu Unesp
Study ID
NCT06326203
Phase
PHASE1/PHASE2
Status
Not Yet Recruiting

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Conditions

  • Leg Ulcer
  • Peripheral Arterial Disease

Eligibility Criteria

Sex
ALL
Age
18 Years - 90 Years
Healthy Volunteers
Not accepted

Interventions

  • CELULAS TRONCO — BIOLOGICAL
    Cellular Therapy Treatment: The treatment will consist of \*\*20 participants (n=20) who will receive treatment with expanded mesenchymal stem cells (MSCs). The patient will undergo a surgical debridement procedure for the ulcer to be in its optimal condition (Visit 1). Subsequently, the patient will receive MSC application via perilesional injections and a biocovering produced by the study team, also containing the same cells (single session - the MSC-containing dressing will remain in contact with the ulcer for 7 days). After removal of the biological dressing, the ulcer will receive local care with a topical hydrogel dressing, dry gauze, and a crepe bandage, with a minimum of one change per day.
  • CONVENTIONAL DRESSING — DEVICE
    The control group will consist of 20 participants (n=20) who will receive local care for the ulcer. The patient will undergo a surgical debridement procedure for the ulcer to be in its optimal condition (Visit 1). Subsequently, the patient will receive the application of a conventional dressing with Hydrogel, dry gauze, and a crepe bandage. The patient will be instructed to change the dressing at least once a day.

Study Details

Peripheral arterial disease (PAD) can progress to critical limb ischemia (CLI) of the affected lower limb, characterized by pain at rest, ulcerations or gangrene, with a high risk of amputation. In this phase, the best treatment is arterial limb revascularization, but this is not always possible or even effective for promoting pain relief, healing of ulcers or preventing amputations, in addition to the high socioeconomic cost caused by the disease. Recent advances in cell therapy represent a promising supporting alternative for the treatment of PAD in cases where conventional alternatives have run out. Objective: To evaluate the safety and efficacy of cell therapy with expanded autologous mesenchymal stem cells in the treatment of patients with PAD with CLI and chronic arterial ulcers. Methods: An open randomized clinical study will be performed with 2 groups of 20 patients with CLI: in group 1, a fragment of abdominal fat tissue (10g) will be collected to obtain mesenchymal stem cells, which will be expanded and applied using subcutaneous perilesional injection in the affected lower limb, in addition to the application in the form of a personalized curative biological on the wounds. Group 2 will receive conventional treatment with a Hydrogel dressing with essential fatty acids. Periodic clinical evaluations, complementary exams and photographic record will be carried out. The main outcome of effectiveness will be partial or total wound healing. Safety outcomes will be monitored for infections, gangrene, amputations and deaths. Participants will be monitored for 120 days. Major amputation cases will not be included. An independent external evaluator and blind to the groups will evaluate the results. It is an innovative procedure with high impact and financial return for SUS, in view of the high prevalence of the disease and the high socioeconomic impact of the disease when it progresses to limb amputation.

Key Dates

First listed
Mar 22, 2024
Start date
Jun 1, 2026
Status verified
May 2026
Primary completion
Mar 31, 2028
Completion
Mar 31, 2028

Study Design

Enrollment
40 participants (estimated)
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT

Arms

  • Experimental: EMBRYONIC STEM CELLS
    Cellular Therapy Treatment: The treatment will consist of \*\*20 participants (n=20) who will receive treatment with expanded mesenchymal stem cells (MSCs). The patient will undergo a surgical debridement procedure for the ulcer to be in its optimal condition (Visit 1). Subsequently, the patient will receive MSC application via perilesional injections and a biocovering produced by the study team, also containing the same cells (single session - the MSC-containing dressing will remain in contact with the ulcer for 7 days). After removal of the biological dressing, the ulcer will receive local care with a topical hydrogel dressing, dry gauze, and a crepe bandage, with a minimum of one change per day.
  • Active Comparator: CONVENTIONAL DRESSING (Control Group)
    The control group will consist of 20 participants (n=20) who will receive local care for the ulcer. The patient will undergo a surgical debridement procedure for the ulcer to be in its optimal condition (Visit 1). Subsequently, the patient will receive the application of a conventional dressing with Hydrogel, dry gauze, and a crepe bandage. The patient will be instructed to change the dressing at least once a day.

Primary Outcome Measure

Major Amputation [ Time Frame: 120 days ]

Central Contacts

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