NCT04888741

Brief Summary

A multi-centre phase II trial of GvHD prophylaxis following unrelated donor stem cell transplantation comparing Thymoglobulin vs. Calcineurin inhibitor or Sirolimus-based post-transplant cyclophosphamide.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
400

participants targeted

Target at P75+ for phase_2

Timeline
16mo left

Started Feb 2021

Longer than P75 for phase_2

Geographic Reach
1 country

17 active sites

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress80%
Feb 2021Aug 2027

Study Start

First participant enrolled

February 22, 2021

Completed
9 days until next milestone

First Submitted

Initial submission to the registry

March 3, 2021

Completed
3 months until next milestone

First Posted

Study publicly available on registry

May 17, 2021

Completed
6.3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 23, 2027

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

August 23, 2027

Last Updated

May 5, 2026

Status Verified

April 1, 2026

Enrollment Period

6.5 years

First QC Date

March 3, 2021

Last Update Submit

April 29, 2026

Conditions

Keywords

GvHDAllogeneic Stem Cell TransplantAMLMDSCMLCMMLNHLHLCyclophosphamideThymoglobulinCyclosporinSirolimusMycophenolate Mofetil

Outcome Measures

Primary Outcomes (1)

  • GVHD-free, relapse-free survival

    GVHD assessment scoring will be performed as per the modified Glucksberg criteria (revised by MAGIC) and the National Institutes of Health (NIH) criteria. GvHD-free, relapse-free survival (GRFS) defined as the time from date of day 0 (defined as the day of stem cell infusion) to the date of first event or death from any cause. An event is defined as GvHD (both acute and chronic), relapse or progression. Patients who are alive and event free at the end of the trial will be censored at their date of last follow-up

    at 1 year

Secondary Outcomes (19)

  • Cumulative incidence of acute grade II-IV and III-IV GvHD

    at 1 year

  • Cumulative incidence of moderate and severe chronic GvHD

    at 1 year

  • Cumulative incidence of NRM

    at 1 year

  • Overall survival

    at 1 year

  • Progression-free survival

    at 1 year

  • +14 more secondary outcomes

Study Arms (3)

Control Arm Thymoglobulin + Cyclosporine + MMF

ACTIVE COMPARATOR

Thymoglobulin is given as an intravenous infusion of 2.5 mg/kg/day over 2 days (days -2 and -1; total dose 5 mg/kg) via a central line through a 0.2 micron inline filter. Each dose will be infused over 6-8 hours. No test dose will be given. 30 minutes before Thymoglobulin, the patient should receive methylprednisolone 1mg/kg intravenously, 1g paracetamol PO and 10mg chlorphenamine IV. Patients should be monitored carefully and receive appropriate therapy for any infusion-related or anaphylactic reactions as per local policy. Patients will receive IV/PO cyclosporine according to local policy to begin on day -1 maintaining a trough level of 100-200 µg/L until day 90 before a subsequent taper in the absence of any active GvHD. MMF will be given IV/PO according to local policy at a dose of 1g TDS to begin on day -1 and discontinued on day 35 without taper if there is no evidence of active GvHD. In adults weighing \<55kg, MMF should be given at a lower dose of 0.75g IV/PO TDS.

Drug: ThymoglobulinDrug: CyclosporineDrug: Mycophenolate Mofetil

Experimental arm (PTCy + Cyclosporine + MMF)

EXPERIMENTAL

Cyclophosphamide is given as an IV infusion of 50 mg/kg/day over 2 days (days 3 and 4; total dose 100 mg/kg) together with IV hydration and Mesna, as per local policy. Patients will receive IV/PO cyclosporine according to local policy to begin on day 5 maintaining a trough level of 100-200 µg/L until day 90 before a subsequent taper in the absence of active GvHD. MMF will be given IV/PO according to local policy at a dose of 1g TDS to begin on day 5 and discontinued on day 35 without taper if there is no evidence of active GvHD. In adults weighing \<55kg, MMF should be given at a lower dose of 0.75g IV/PO TDS.

Drug: CyclophosphamideDrug: CyclosporineDrug: Mycophenolate Mofetil

Experimental arm (PTCy + Sirolimus + MMF)

EXPERIMENTAL

Cyclophosphamide is given as an IV infusion of 50 mg/kg/day over 2 days (days 3 and 4; total dose 100 mg/kg) together with IV hydration and Mesna, as per local policy. Sirolimus will be initially given PO as a loading dose of 6 mg on day 5 followed by 2 mg daily; doses will be adjusted to maintain a trough level (in whole blood) of 8 to 14 ng/mL until day 60, thereafter 5-8 ng/mL until day 90. In the absence of active GvHD, the dose of sirolimus will be tapered from day 90. We recommend that the daily maintenance dose of sirolimus is reduced empirically to 0.5-1mg daily with concomitant treatment with a triazole anti-fungal agent. MMF will be given IV/O according to local policy at a dose of 1g TDS to begin on day 5 and discontinued on day 35 without taper if there is no evidence of active GvHD. In adults weighing \<55kg, MMF should be given at a lower dose of 0.75g IV/PO TDS.

Drug: CyclophosphamideDrug: SirolimusDrug: Mycophenolate Mofetil

Interventions

GVHD prophylaxis

Also known as: ATG
Control Arm Thymoglobulin + Cyclosporine + MMF

Post transplant cyclophosphamide strategy for GVHD prophylaxis

Experimental arm (PTCy + Cyclosporine + MMF)Experimental arm (PTCy + Sirolimus + MMF)

immunosuppressant

Control Arm Thymoglobulin + Cyclosporine + MMFExperimental arm (PTCy + Cyclosporine + MMF)

immunosuppressant

Experimental arm (PTCy + Sirolimus + MMF)

immunosuppressant

Also known as: MMF
Control Arm Thymoglobulin + Cyclosporine + MMFExperimental arm (PTCy + Cyclosporine + MMF)Experimental arm (PTCy + Sirolimus + MMF)

Eligibility Criteria

Age16 Years - 70 Years
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

  • Availability of suitably matched unrelated donor (9/10 or 10/10)
  • Planned to receive one of the following RIC protocols:
  • Fludarabine-Melphalan (Fludarabine 120-180mg/m2 IV; melphalan ≤ 150mg/m2 IV)
  • BEAM or LEAM (carmustine 300mg/m2 IV or lomustine 200mg/m2 IV with: etoposide 800 mg/m2 IV; cytarabine 1600mg/m2 IV; melphalan 140mg/m2 IV)
  • Fludarabine-Busulphan (Fludarabine 120-180mg/m2 IV; Busulphan ≤ 8mg/kg PO or 6.4mg/kg IV)
  • Fludarabine- Treosulfan (Fludarabine 150mg/m2 IV; Treosulfan 30g/m2 IV)
  • Planned use of PBSCs for transplantation
  • Planned allo-SCT for one of the following haematological malignancies:
  • AML in CR (patients enrolled onto the COSI trial are not eligible for this study)
  • ALL in CR (patients enrolled onto the ALL-RIC trial are not eligible for this study)
  • CMML \<10% blasts
  • MDS \<10% blasts (patients enrolled onto the COSI trial are not eligible for this study)
  • NHL in CR/PR
  • HL in CR/PR
  • MM in CR/PR
  • +5 more criteria

You may not qualify if:

  • Use of any method of graft manipulation (excluding storage of future DLI)
  • Use of alemtuzumab or any method of T cell depletion except those that are protocol-defined
  • Known hypersensitivity to study drugs or history of hypersensitivity to rabbits
  • Pregnant or lactating women
  • Adults of reproductive potential not willing to use appropriate, highly effective, contraception during the specified period
  • Life expectancy \<8 weeks
  • Active HBV or HCV infection
  • Organ dysfunction defined as:
  • LVEF \<45%
  • GFR \<50ml/min
  • Bilirubin \>50µmol/l
  • AST/ALT\>3 x ULN
  • Participation in COSI or ALL-RIC trials
  • Contraindication to treatment with the study drugs (Thymoglobulin, cyclophosphamide, sirolimus, ciclosporin and mycophenolate mofetil) as detailed in each study drug SPC.
  • Patient has any other systemic dysfunction (e.g., gastrointestinal, renal, respiratory, cardiovascular) or significant disorder which, in the opinion of the investigator would jeopardise the safety of the patient by taking part in the trial.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (17)

University Hospital of Wales

Cardiff, Wales, CF14 4XW, United Kingdom

RECRUITING

Queen Elizabeth Hospital

Birmingham, B15 2GW, United Kingdom

RECRUITING

Bristol Haematology and Oncology Centre

Bristol, BS2 8ED, United Kingdom

RECRUITING

Addenbrookes Hospital

Cambridge, CB2 0QQ, United Kingdom

RECRUITING

Queen Elizabeth Hospital Glasgow

Glasgow, G51 4TF, United Kingdom

RECRUITING

St Jame's University Hospital

Leeds, LS9 7TF, United Kingdom

RECRUITING

University College London Hospital

London, NW1 2BU, United Kingdom

RECRUITING

King's College Hospital

London, SE5 9RS, United Kingdom

RECRUITING

Hammersmith Hospital

London, W12 0HS, United Kingdom

RECRUITING

Manchester Royal Infirmary

Manchester, M13 9WL, United Kingdom

RECRUITING

The Christie

Manchester, M20 3QH, United Kingdom

RECRUITING

Freeman Hospital

Newcastle upon Tyne, NE7 7DN, United Kingdom

RECRUITING

Nottingham City Hospital

Nottingham, NG5 1PB, United Kingdom

RECRUITING

Churchill Hospital

Oxford, OX3 7LE, United Kingdom

RECRUITING

Derriford Hospital

Plymouth, PL6 8DH, United Kingdom

RECRUITING

Royal Hallamshire Hospital

Sheffield, S102JF, United Kingdom

RECRUITING

The Royal Marsden Hospital

Sutton, SM2 5PT, United Kingdom

RECRUITING

MeSH Terms

Conditions

Leukemia, Myeloid, AcutePrecursor Cell Lymphoblastic Leukemia-LymphomaLeukemia, Myelomonocytic, ChronicMyelodysplastic SyndromesLymphoma, Non-HodgkinHodgkin DiseaseMultiple MyelomaLeukemia, Myelogenous, Chronic, BCR-ABL PositivePrimary Myelofibrosis

Interventions

thymoglobulinCyclophosphamideCyclosporineSirolimusMycophenolic Acid

Condition Hierarchy (Ancestors)

Leukemia, MyeloidLeukemiaNeoplasms by Histologic TypeNeoplasmsHematologic DiseasesHemic and Lymphatic DiseasesLeukemia, LymphoidLymphoproliferative DisordersLymphatic DiseasesImmunoproliferative DisordersImmune System DiseasesMyelodysplastic-Myeloproliferative DiseasesBone Marrow DiseasesChronic DiseaseDisease AttributesPathologic ProcessesPathological Conditions, Signs and SymptomsLymphomaNeoplasms, Plasma CellHemostatic DisordersVascular DiseasesCardiovascular DiseasesParaproteinemiasBlood Protein DisordersHemorrhagic DisordersMyeloproliferative Disorders

Intervention Hierarchy (Ancestors)

Phosphoramide MustardsNitrogen Mustard CompoundsMustard CompoundsHydrocarbons, HalogenatedHydrocarbonsOrganic ChemicalsPhosphoramidesOrganophosphorus CompoundsCyclosporinsPeptides, CyclicMacrocyclic CompoundsPolycyclic CompoundsPeptidesAmino Acids, Peptides, and ProteinsMacrolidesLactonesCaproatesAcids, AcyclicCarboxylic AcidsFatty AcidsLipids

Study Officials

  • Ronjon Professor Chakraverty

    Oxford Cancer & Haematology Centre, The Churchill Hospital, Old Road - Headington, Oxford, OX3 7LE Email: ronjon.chakraverty@ndcls.ox.ac.uk

    STUDY DIRECTOR

Central Study Contacts

Study Design

Study Type
interventional
Phase
phase 2
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Model Details: Patients eligible for entry into the trial will be randomised on a 1:1:1 ratio to receive either one of the experimental treatment arms or the control arm.
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

March 3, 2021

First Posted

May 17, 2021

Study Start

February 22, 2021

Primary Completion (Estimated)

August 23, 2027

Study Completion (Estimated)

August 23, 2027

Last Updated

May 5, 2026

Record last verified: 2026-04

Data Sharing

IPD Sharing
Will not share

Locations