Allogeneic ABCB5-positive Dermal Mesenchymal Stromal Cells for Treatment of Epidermolysis Bullosa (Phase III)

RHEACELL

Status and phase: Active, not recruiting; Phase 3

Conditions: Epidermolysis Bullosa

Treatments: Drug: allo-APZ2-OTS; Drug: Placebo

Study type: Interventional

Funder types: Industry

Identifiers

NCT05838092

allo-APZ2-EB-III-01

Details and patient eligibility

About

The aim of this clinical trial is to investigate the safety and efficacy of allo-APZ2-OTS administered intravenously to subjects with recessive dystrophic epidermolysis bullosa (RDEB) compared to placebo. An additional baseline-controlled open-label arm will be included to investigate the safety and efficacy of allo-APZ2-OTS administered intravenously to subjects with JEB and to RDEB subjects < 1 year.

Enrollment: 9 patients

Sex: All

Ages: 6+ months old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Male or female subjects from 6 months of age with a diagnosis of RDEB confirmed by genetic testing or by a skin biopsy with immunofluorescence mapping
2. Subject is eligible to participate in this clinical trial based on general health condition;
3. Subject with a target wound meeting the following criteria: 5-50 cm2, ≥ 21 days and < 9 months, no signs of acute infection;
4. Patient/legal representative understands the nature of the procedure and provide written informed consent/assent prior to any clinical trial procedure;
5. Women of childbearing potential must have a negative urine pregnancy test at Visit 1. Women of childbearing potential, male participants, and their partner must be willing to use highly effective contraceptive methods during the course of the entire clinical trial.

Exclusion criteria

1. Any current tumor diseases, including squamous cell carcinoma and basal cell carcinoma;
2. Any known allergies to components of the IP or premedication;
3. Patient/legal representative anticipated to be unwilling or unable to comply with the requirements of the protocol;
4. Pregnant or lactating women;
5. Current or previous (within 30 days of screening) treatment with another IP, or participation and/or under follow-up in another interventional clinical trial;
6. Previous participation in this clinical trial (except for screening failures);
7. Clinically significant or unstable concurrent disease or other clinical contraindications like an uncontrolled or poorly controlled mental health condition of the subject and/or his/her legal representative that could impact on patient's safety or interfere with study compliance such as inability to attend scheduled study visits; Confidential
8. Employees of the sponsor, or employees or relatives of the investigator.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Quadruple Blind

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9 participants in 2 patient groups, including a placebo group

Verum

Experimental group

Treatment:

Drug: allo-APZ2-OTS

Placebo

Placebo Comparator group

Treatment:

Drug: Placebo