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Effect of Mesenchymal Stem Cells on Healing of Foot Ulcers in Diabetes Patients. (STEMFOOT)

C

Cell2Cure

Status and phase

Enrolling
Phase 1

Conditions

Mesenchymal Stromal Cells
Diabetic Foot Ulcer

Treatments

Drug: Adipose tissue derived mesenchymal stromal/stem cells (Cell2Cure®)

Study type

Interventional

Funder types

Industry

Identifiers

NCT05595681
STEMFOOT Pilot study

Details and patient eligibility

About

The STEMFOOT Pilot Study is a single center randomized open phase I clinical intervention pilot trial with the aim of investigating the treatment effect of an allogenic adipose-derived mesenchymal stromal cell product (C2C_ASC) compared to conventional optimal treatment on healing and complications of foot ulcers in diabetes patients.

Full description

The STEMFOOT Pilot Study will be performed at Copenhagen Diabetes Foot Center, Department of Endocrinology, Bispebjerg Hospital, Denmark. 30 adult patients with diabetes and foot ulcer will be enrolled and randomly assigned 1:1 to either C2C_ASC treatment on top of standard care (n=15) or control group with standard care (n=15).

C2C_ASC treatment: 1 ml containing 20 x 106 C2C_ASCs will be injected into the subcutaneous dermo-epidermal junction and homogenously around the wound (4 - 6 injections), but not directly within the index foot ulcer. The depth from the index wound border will be 0,5 - 1 cm into the subcutaneous tissue.

Standard care: Each treatment will be administered in the context of independently-managed standard of care, including (a) formal assessment of the ulcer and surrounding skin at each clinic review; (b) provision of any necessary off-loading, with detailed description of the type and assessment of its effectiveness; (c) debridement of the wound surface, which can be surgical (either in the clinic or in an operating room) or non-surgical; (d) selection of appropriate dressing products, ensuring a moist ulcer environment; (e) management of ulcer infection; (f) attention to nutrition and self-care; (g) optimization of glycemic and risk factor control; (h) revascularization when appropriate and (i) continued close observation with appropriate adjustment of management.

We hypothesize that in diabtes patients with foot ulcer, the time to healing is significantly shorter and more foot ulcers are completely healed at week 12 when treated with C2C_ASC on top of standard care compared to control.

Enrollment

30 estimated patients

Sex

All

Ages

40 to 75 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • Diagnosis of diabetes mellitus for at least 3 months.
  • Age 40-75 years.
  • A foot ulcer below the level of the malleoli, excluding ulcers confined to the digits or interdigital cleft. If more than one ulcer, the largest will be selected at screening as the index ulcer.
  • Wound area after sharp debridement of ≥ 50 mm^2, but ≤1000 mm^2.

Exclusion criteria

  • Signs of infection of the index ulcer.
  • An ulcer where a probe investigation indicates ulcer depth to the underlying bone.
  • Wound caused primarily by untreated vascular insufficiency, or where participants are primarily eligible for vascular intervention to promote wound healing.
  • Wounds with an etiology not related to diabetes.
  • Underlying osteomyelitis of the leg with the wound to be treated.
  • Participants presenting with the clinical characteristics of cellulitis at the wound site (suppurative inflammation involving particularly the subcutaneous tissue, often mild erythema, tenderness, malaise, chills and fever).
  • Surgery to lengthen achilles tendon on the leg with the wound to be treated 3 months prioer to signing the informed consent form.
  • Necrosis, purulence, or sinus tracts that cannon be removed by debridement on foot to be treated.
  • Toe blood pressure < 44 mmHg at the foot with the index ulcer.
  • Dialysis or an estimated glomerular filtration rate (GFR) (based on serum creatinine) < 20 ml/min/1.73 m^2.
  • Current treatment with cytotoxic drugs.
  • Hospitalisation for a major cardiovascular event or procedure or revascularization surgery on a leg in the last 3 months or scheduled major cardiovascular intervention.
  • Abuse of alcohol or drugs, or presence of any condition that in the Investigators opinion may lead to poor adherence to study protocol.
  • Recent use (< 3 months) of an investigational drug or participation in interventional clinical foot ulcer-healing trial.
  • Females capable of becoming pregnant must have a negative pregnancy test prior to transplantation. After inclusion, they must use contraceptives for 12 weeks following the given stem cell treatment. The pill, spirak, depot injection of progesterone, sub-dermal implantation, hormonal vaginal ring and transdermal patch regarded as safe contraceptives.
  • Likely inability yo comply with the need for clinical visits because of planned activity.
  • Mental incapacity, unwillingness, or language barrier precluding adequate understanding or cooperation.
  • Unable to provide written and signed informed consent.
  • Any clinically significant disease or disorder, except for conditions associated to the type 1 or 2 diabetes, which in the Investigator's opinion could interfere with the results of the trial.
  • Active cancer or a history of cancer in the 5 years prior to signing the informed consent form (history of basal cell carcinoma is allowed).
  • Life expectancy of less than 12 months.

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

None (Open label)

30 participants in 2 patient groups

Treatment group
Experimental group
Description:
20 x 1000000 C2C_ASCs on top of standard care.
Treatment:
Drug: Adipose tissue derived mesenchymal stromal/stem cells (Cell2Cure®)
Control group
No Intervention group
Description:
Control group with standard care.

Trial contacts and locations

1

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Central trial contact

Jens Kastrup

Data sourced from clinicaltrials.gov

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