An experimental study in adults and adolescents who underwent stem cell transplantation and developed a sustained acute graft rejection after steroid treatment; to test the safety, tolerability and the effects of treatment with mesenchymal stromal cells MC0518

Recruitment & Eligibility

Status: Recruiting

Sex: All

Target Recruitment: 210

Inclusion Criteria

Subject had a previous allogeneic HSCT as indicated for non-malignant (including inborn errors of metabolism, primary immunodeficiencies, haemoglobinopathies, and bone marrow failure syndromes) or haematological malignant disease, irrespective of human leukocyte antigen match, Subject has been clinically diagnosed with Grade II to IV aGvHD at the Screening Visit., Subject has experienced failure of previous first line aGvHD treatment (ie, SR aGvHD), defined as: a. aGvHD progression within 3 to 5 days of therapy onset with = 2 mg/kg/day of prednisone equivalent or b. failure to improve within 5 to 7 days of treatment initiation with = 2 mg/kg/day of prednisone equivalent or c. incomplete response after > 28 days of immunosuppressive treatment including at least 5 days with = 2 mg/kg/day of prednisone equivalent., Male or female subject who is = 12 years of age and = 15 kg at the Screening Visit., Subject has an estimated life expectancy > 28 days at the Screening Visit., Subject, if female and of childbearing potential, agrees to use a highly effective contraceptive measure starting at the Screening Visit and continuing throughout the entire trial period. The definition of women of childbearing potential (WOCBP) and a complete list of highly effective contraceptive measures are included in an appendix to the protocol., Subject, if a fertile male, agrees to sexual abstinence or to use a condom during sexual activity with their female partner of childbearing potential or pregnant partner. Additionally, if their partner is a WOCBP, then their partner has to use an additional highly effective contraceptive method during sexual activity starting at the Screening Visit and continuing throughout the entire trial period. For the definition of fertile men and a complete list of highly effective contraceptive measures are included in an appendix to the protocol., Subject or parent(s) / legal guardian(s) have read, understood, and signed the informed consent form (and informed assent form, if applicable) according to national regulations.

Exclusion Criteria

Subject has overt relapse or progression or persistence of the underlying disease at the Screening Visit., Subject has received the last HSCT for a solid tumour disease., Subject has GvHD overlap syndrome at the Screening Visit., Subject has received systemic first-line treatment for aGvHD other than steroids and a prophylaxis with other than calcineurin inhibitors, mammalian target of rapamycin (mTOR) inhibitors, anti-thymocyte globulin (ATG), mycophenolate mofetil (MMF), methotrexate (MTX), and / or cyclophosphamide before the Screening Visit. Please Note: In vitro or in vivo graft manipulation to prevent GvHD (eg, T-cell depletion) during HSCT is permitted. Restart of initial prophylaxis with calcineurin inhibitors or mTOR inhibitors after aGvHD onset is permitted., Subject has a known pregnancy (as confirmed by a positive pregnancy test at the Screening Visit) and or is breastfeeding at the Screening Visit., Subject has received treatment with any other investigational agent within 30 days or 5 half-lives (whichever is longer) before the Screening Visit.

Study & Design

Study Type: Interventional clinical trial of medicinal product

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method

Secondary Outcome Measures

Name	Time	Method

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