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NCT Number: NCT05838092

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

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.

Active, Not Recruiting

This study is active but is not currently recruiting participants.

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Key information

Age range

6 month and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Children's Hospital Colorado, Aurora, Colorado, United States

Loading trial locations.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • 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
  • Subject is eligible to participate in this clinical trial based on general health condition;
  • Subject with a target wound meeting the following criteria: 5-50 cm2, ≥ 21 days and < 9 months, no signs of acute infection;
  • Patient/legal representative understands the nature of the procedure and provide written informed consent/assent prior to any clinical trial procedure;
  • 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

  • Any current tumor diseases, including squamous cell carcinoma and basal cell carcinoma;
  • Any known allergies to components of the IP or premedication;
  • Patient/legal representative anticipated to be unwilling or unable to comply with the requirements of the protocol;
  • Pregnant or lactating women;
  • Current or previous (within 30 days of screening) treatment with another IP, or participation and/or under follow-up in another interventional clinical trial;
  • Previous participation in this clinical trial (except for screening failures);
  • 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
  • Employees of the sponsor, or employees or relatives of the investigator.

Treatment and study plan

allo-APZ2-OTS

Drug

Allogeneic dermal ABCB5-positive Mesenchymal Stromal Cells (ABCB5+ MSCs)

Placebo

Drug

Placebo

Primary outcomes

  1. Proportion of subjects with complete target wound closure

    Time frame: 6 Months

    Proportion of subjects with complete healing of target wound, determined by the investigator, as compared to baseline

Secondary outcomes

  1. Time to complete target wound closure from baseline

    Time frame: 6 Months

Sponsors and collaborators

Lead sponsor

RHEACELL GmbH & Co. KG

Industry

Registry information

Official study title

A Double-blind, Randomized, Placebo-controlled, Interventional, Multicenter, Phase III Clinical Trial to Investigate the Safety and Efficacy of ABCB5-positive Mesenchymal Stromal Cells (ABCB5+ MSCs) on Epidermolysis Bullosa (EB)

Important dates

Study start
2023
Primary completion
2025
Study completion
2026
First posted
May 1, 2023
Registry last updated
Dec 10, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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