Safety and Preliminary Efficacy of TrophiPatch, an Adipose-Derived Stromal Cell Patch for Chronic Leg Ulcers

Launched by NICOLÒ BREMBILLA · Jun 24, 2025

Keywords

ClinConnect Summary

This clinical trial is testing the safety and early effectiveness of a new treatment called TrophiPatch for people with chronic leg ulcers, which are wounds that don’t heal well, often due to diabetes or poor blood flow in the veins. TrophiPatch is a special patch made from cells taken from donor fat tissue that may help wounds heal faster by reducing inflammation and encouraging new blood vessels to grow. The study will include adults with hard-to-heal leg ulcers caused by diabetes or vein problems.

If you join the study, you’ll receive one application of the TrophiPatch directly on your wound. The study lasts up to 24 weeks, with many follow-up visits to check on your progress and safety. To be eligible, participants must be adults with certain types of leg ulcers that have not improved much over several weeks, have no signs of infection, and meet specific health criteria such as good blood flow to the affected leg. People with serious health problems, infections, or certain other conditions won’t be able to join. This trial is currently recruiting participants and welcomes adults of all genders who meet the criteria.

Gender

ALL

Eligibility criteria

• • Inclusion Criteria
• • Age 18 years or older.
• • Patients with more than one eligible ulcer will have one - usually the largest or more clinically significant - selected at screening as the index ulcer.
• • Participants will have the capacity to understand study procedures, and will be able to providewritten informed consent.
• • (for VLU only)
• • Diagnosed with at least one venous leg ulcer.
• • Ulcers duration for 6 weeks to 3 years at the time of screening.
• • Hard-to-healed ulcers with cross-sectional area that have decreased by less than 40% during a four-week run-in period.
• • Reference ulcer surface from 5 to 25 cm2.
• • At the time of inclusion, the ulcer will be clinically non-infected (TILI score ≥ 5).
• • Absence of significant arterial insufficiency assessed at clinical examination (intermittent claudication or resting pain, necrotic or distal wound on the foot) and systolic homolateral ankle-brachial index (ABI) greater than 0.75 and inferior to 1.40 or biphasic or triphasic Doppler signals in the dorsalis or posterior tibial arteries of the affected limb.
• • (for DFU only)
• • Patient with type 1 or type 2 diabetes.
• • Diagnosed with at least one diabetic foot ulcer on a foot or both feet below the level of the malleoli, excluding ulcers confined to the interdigital cleft.
• • Ulcers duration for 4 weeks to 3 years at the time of screening.
• • Eligible ulcers will be hard-to-heal, meaning that the cross-sectional area will decrease by less than 50% during a four-week run-in period.
• • Reference ulcer surface from 1 to 25 cm2.
• • At the inclusion, the ulcer will be clinically non-infected (according to IDSA criteria).
• • HbA1C \< 12% at screening.
• • Absence of significant arterial insufficiency assessed by systolic homolateral ankle-brachial index (ABI) greater than 0.75 and inferior to 1.40 or biphasic or triphasic Doppler signals in the dorsalis or posterior tibial arteries of the affected limb.
• • Exclusion Criteria
• * Subject has a history of:
• • endstage renal disease
• • uncontrolled cardiac failure
• • severe malnutrition
• • severe liver disease
• • aplastic anemia
• • malignant disease (active or recent (\<5 years))diabetes avec HbA1C \> 12%
• • rheumatoid arthritis
• • sickle cell disease
• • other connective tissue disorder
• • irradiation to the affected extremity
• • Serum creatinine concentration greater than 180 umol/L and/or receipt of renal dialysis or an estimated glomerular filtration rate (based on cystatin C or serum creatinine) of less than 20 mL/min per 1·73 m²
• • Drug or alcohol abuse.
• • Limited physical capacity or total immobility.
• • Known pregnancy or nursing at the time of screening visit
• • Subject is currently receiving (i.e within 30 days prior to inclusion) or scheduled to receive a medication or treatment that, in the opinion of the investigator, will interfere with or affect the rate of wound healing.
• • Index ulcers probing to tendon, muscle, capsule and bone.
• • Local or systemic signs of ongoing infection.
• • Hypersensitivity to silicone or porcine gelatin.
• • Previous treatment with growth factors, stem cells, or an equivalent preparation within the 8 weeks before the baseline visit.
• • Involvement in another interventional clinical trial within the 4 weeks before the baseline visit.
• • Known or suspected absence of capacity to understand the study procedures or provide written informed consent (decided by the investigator).
• • Cross-sectional area of the index ulcer had increased by at least 20%.
• • (for VLU only)
• • History of poor compliance with compression therapy.
• • Presence of peripheral neuropathy of the lower limbs.
• • (for DFU only)
• • • History of poor compliance with offloading therapy.