Allogeneic ABCB5-positive Dermal Mesenchymal Stromal Cells for Treatment of Therapy-resistant CVU (Phase III)

Launched by RHEACELL GMBH & CO. KG · Jul 2, 2024

Keywords

ClinConnect Summary

This clinical trial is studying a new treatment for people with therapy-resistant chronic venous leg ulcers (CVUs), which are wounds that have not healed despite other treatments. The researchers want to see if applying a special type of cell, called allo-APZ2-CVU, directly onto these stubborn ulcers is effective and safe compared to a placebo, which is an inactive treatment. The trial is currently recruiting participants aged 18 and older who have a chronic venous leg ulcer that has been present for less than 15 years and meets specific size requirements.

To qualify for this study, participants should have a chronic ulcer located on the lower leg or ankle, and they must be able to understand the study and provide written consent. Those with certain health conditions, such as uncontrolled diabetes or recent deep vein thrombosis, may not be eligible. If you join the trial, you will apply the treatment for your ulcer and attend regular visits for assessments. It’s important to note that women who could become pregnant will need to use effective birth control during the study. This trial aims to offer new hope for healing difficult leg ulcers and is an opportunity for individuals who have struggled with these wounds.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • 1. Patients at least 18 years old;
• • 2. Chronic venous leg ulcer at lower leg and/or ankle region that has not been present longer than 15 years, diagnosed by Doppler or Duplex sonography, ankle brachial index, physical examination and dermatological review;
• • 3. Wound size at V1 and V2 between 1 and 25 cm˄2 as measured by standardized photography;
• • 4. If patients have 2 or more ulcers at the same extremity, the target ulcer has to be separated from the other ulcers with a bridge of epithelialized skin at least 1 cm wide;
• • 5. Body mass index between 15 and 50 kg/m²;
• • 6. Patients able to understand the nature of the study and able to provide written informed consent prior to any clinical trial procedures;
• • 7. Women of childbearing potential must have a negative urine pregnancy test at Visit 1;
• • 8. During the course of the clinical trial women of childbearing potential and their male partners must be willing to use highly effective contraceptive methods as defined in the EMA CTCG "Recommendations related to contraception and pregnancy testing in clinical trials" Version 1.2.
• Exclusion Criteria:
• • 1. Evidence of the ulcer extending to the underlying muscle, tendon, or bone;
• • 2. Uncontrolled Diabetes mellitus i.e. Hemoglobin A1c (HbA1c) \>9.0% (75 mmol/mol) (measured by blood test);
• • 3. Peripheral Artery Disease including claudication with need of treatment or intervention;
• • 4. Acute deep vein thrombosis diagnosed within 30 days before V1, or untreated deep vein thrombosis;
• • 5. Wounds showing size reduction of more than 40% at Visit 2 compared to Visit 1;
• • 6. Patients with known hypersensitivity and/or clinical contraindications to the compression systems used in the clinical trial, or inability/unwillingness to tolerate leg ulcer compression systems;
• • 7. Acute wound infection of ulcer requiring treatment as judged clinically;
• • 8. Current use of medications that are known to influence wound healing i.e. systemic immunosuppressives, cytotoxic medicinal products, systemic steroids (above Cushingthreshold level) at investigator´s discretion;
• • 9. Patients who, in the opinion of the investigator, for any reason are unable or unwilling to complete the trial per protocol (e.g. alcohol or substance abuse, not mobile, short life expectancy) or there is an evidence of any other medical condition (such as psychiatric illness, physical examination, or laboratory findings) that may interfere with the planned treatment, affect the patient's compliance, or place the patient at high risk of complications related to the treatment;
• • 10. Any malignancy within the past 5 years, excluding successfully treated carcinoma in situ, basal cell carcinoma or squamous cell carcinoma of the skin without evidence of metastases;
• • 11. Pregnant or lactating women;
• • 12. Known hypersensitivities to the active substance or to any of the excipients in the IP or the placebo;
• • 13. Surgical procedure affecting the CVU, such as bypass or mesh graft performed within two months prior to Visit 1;
• • 14. Current or previous (within 30 days of enrollment) treatment with another IP, or participation in another clinical trial, including follow-up phase;
• • 15. Previous participation in this clinical trial (except for screening failures due to an inclusion or exclusion criterion);
• • 16. Employees of the sponsor, or employees or relatives of the investigator(s).