| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated | 
| Graft Versus Host Disease |  | 
| E.1.1.1 | Medical condition in easily understood language | 
| Graft Versus Host Disease |  | 
| E.1.1.2 | Therapeutic area | Diseases [C] - Blood and lymphatic diseases [C15] | 
| MedDRA Classification | 
| E.1.2 Medical condition or disease under investigation | 
| 
| E.1.2 | Version | 16.1 |  
| E.1.2 | Level | PT |  
| E.1.2 | Classification code | 10066260 |  
| E.1.2 | Term | Acute graft versus host disease |  
| E.1.2 | System Organ Class | 10021428 - Immune system disorders |  | 
| E.1.2 Medical condition or disease under investigation | 
| 
| E.1.2 | Version | 16.1 |  
| E.1.2 | Level | LLT |  
| E.1.2 | Classification code | 10068908 |  
| E.1.2 | Term | AGVHD |  
| E.1.2 | System Organ Class | 10021428 - Immune system disorders |  | 
| E.1.3 | Condition being studied is a rare disease | Yes | 
| E.2 Objective of the trial | 
| E.2.1 | Main objective of the trial | 
| To improve the response rate to treatment of acute GvHD grade II-IV (with gut and/or liver involvement) by early addition of MSC to standardized second line treatment. |  | 
| E.2.2 | Secondary objectives of the trial | 
| • To study the safety of MSC addition to second line treatment • To assess the overall survival
 • To assess the progression-free survival
 • To reduce the time required for continued pharmacological immune suppression
 • To assess the incidence of severe bacterial, viral and fungal infections
 • To assess the incidence and severity of chronic GvHD
 • To evaluate the quality of life of patients treated with MSC in comparison with controls up to two years after MSC treatment
 • To develop a score by means of clinical and laboratory parameters that allows for identification of patients with acute GvHD that will respond to MSC treatment
 
 |  | 
| E.2.3 | Trial contains a sub-study | No | 
| E.3 | Principal inclusion criteria | 
| • Grade II-IV acute GvHD with gut and/or liver involvement, confirmed by histology of involved tissues (in case of gut and liver involvement histology of either one of these tissues is considered sufficient); • Non-responsive to treatment with steroids and a calcineurin-inhibitor defined as:
 - progressive disease of mixed response after 5 days of consecutive systemic treatment with steroids at a dose of 2 mg/kg and a calcineurin-inhibitor at therapeutic trough levels.
 - stage 4 GvHD of gut and/or liver and deterioration of clinical parameters (gut) or increase of serum total bilirubin levels in micromol/L (liver) after 5 days of consecutive systemic treatment with steroids at a dose of 2 mg/kg and a calcineurin-inhibitor at therapeutic trough levels
 - stable disease after 10 days of consecutive systemic treatment with steroids at a dose of 2 mg/kg and a calcineurin-inhibitor at therapeutic trough levels.
 - progressive disease after initial partial repsons of maximal 1 grade after 10 days of consecutive systemic treatment with steroids at a dose of 2 mg/kg and a calcineurin-inhibitor at therapeutic trough levels.
 • Any age;
 • Lansky / Karnofsky score of ≥20;
 • Signed informed consent by the patient and/or parent(s) or legal guardian(s);
 
 |  | 
| E.4 | Principal exclusion criteria | 
| • Use of prophylactic MMF, Myfortic or other systemic treatment for acute GvHD <= 6 days prior to development of acute GvHD grade II-IV with gut and/or liver involvement. • Systemic treatment for acute GvHD other than steroids and a calcineurin inhibitor (budesonide is considered a local treatment).
 • Previous treatment with MSC.
 • Progressive or relapsing malignant disease in case of NHL, HL, CLL, MM, and ≥ 5% blasts in the bone marrow in case of AML, ALL, CML;.
 • Requiring ventilator or vasopressor support.
 • Poor performance not expected to survive 14 days.
 • Known seropositivity of HIV, Hepatitis B and C, HTLV.
 • Known uncontrolled toxicity for DMSO.
 • Known anaphylactic reaction to penicillin or streptomycin;
 • Known pregnancy;
 • Any psychological, familial, sociological and/or geographical condition potentially hampering compliance with the study protocol and follow-up schedule
 
 |  | 
| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| Proportion of patients responding to treatment of acute GvHD grade II-IV (with gut and/or liver involvement) at day 29. |  | 
| E.5.1.1 | Timepoint(s) of evaluation of this end point | 
| Two interim analyses will take place after inclusion of 33% and 67% of patients These results will be reviewed confidentially by the DSMB. Final analysis will take place when the relevant data of all patients are available
 |  | 
| E.5.2 | Secondary end point(s) | 
| - Overall Survival - Progression-free survival
 - Duration of acute GvHD response
 - Time without systemic immunosuppression.
 - Cumulative incidence of non-relapse mortality
 - Adverse events
 - Incidence of chronic GvHD
 - Quality of life
 - Immununological monitoring including monitoring of absolute T-cell subsets, B-cells, NK-cells as well as biomarkers of acute GvHD
 |  | 
| E.5.2.1 | Timepoint(s) of evaluation of this end point | 
| An interim analysis will take place when 50% of the patients are included. These results will be reviewed confidentially by the DSMB. Final analysis will take place when the relevant data of all patients are available
 |  | 
| E.6 and E.7 Scope of the trial | 
| E.6 | Scope of the trial | 
| E.6.1 | Diagnosis | No | 
| E.6.2 | Prophylaxis | No | 
| E.6.3 | Therapy | Yes | 
| E.6.4 | Safety | Yes | 
| E.6.5 | Efficacy | Yes | 
| E.6.6 | Pharmacokinetic | No | 
| E.6.7 | Pharmacodynamic | No | 
| E.6.8 | Bioequivalence | No | 
| E.6.9 | Dose response | No | 
| E.6.10 | Pharmacogenetic | No | 
| E.6.11 | Pharmacogenomic | No | 
| E.6.12 | Pharmacoeconomic | No | 
| E.6.13 | Others | No | 
| E.7 | Trial type and phase | 
| E.7.1 | Human pharmacology (Phase I) | No | 
| E.7.1.1 | First administration to humans | No | 
| E.7.1.2 | Bioequivalence study | No | 
| E.7.1.3 | Other | No | 
| E.7.1.3.1 | Other trial type description |  | 
| E.7.2 | Therapeutic exploratory (Phase II) | No | 
| E.7.3 | Therapeutic confirmatory (Phase III) | Yes | 
| E.7.4 | Therapeutic use (Phase IV) | No | 
| E.8 Design of the trial | 
| E.8.1 | Controlled | Yes | 
| E.8.1.1 | Randomised | Yes | 
| E.8.1.2 | Open | No | 
| E.8.1.3 | Single blind | No | 
| E.8.1.4 | Double blind | Yes | 
| E.8.1.5 | Parallel group | Yes | 
| E.8.1.6 | Cross over | No | 
| E.8.1.7 | Other | No | 
| E.8.2 | Comparator of controlled trial | 
| E.8.2.1 | Other medicinal product(s) | No | 
| E.8.2.2 | Placebo | Yes | 
| E.8.2.3 | Other | No | 
| E.8.2.4 | Number of treatment arms in the trial | 2 | 
| E.8.3 | The trial involves single site in the Member State concerned | Yes | 
| E.8.4 | The trial involves multiple sites in the Member State concerned | No | 
| E.8.5 | The trial involves multiple Member States | Yes | 
| E.8.5.1 | Number of sites anticipated in the EEA | 9 | 
| E.8.6 Trial involving sites outside the EEA | 
| E.8.6.1 | Trial being conducted both within and outside the EEA | No | 
| E.8.6.2 | Trial being conducted completely outside of the EEA | No | 
| E.8.7 | Trial has a data monitoring committee | Yes | 
| E.8.8 | Definition of the end of the trial and justification where it is not the last
                        visit of the last subject undergoing the trial |  | 
| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.1 | In the Member State concerned years | 12 | 
| E.8.9.1 | In the Member State concerned months | 6 | 
| E.8.9.1 | In the Member State concerned days |  | 
| E.8.9.2 | In all countries concerned by the trial years | 12 | 
| E.8.9.2 | In all countries concerned by the trial months | 6 |