Randomized Phase 2 study testing two conditioning regimen with a single prophylaxis of graft-versus-host disease by cyclophosphamide and methotrexate post-transplant in patients eligible for matched-donor allograft transplantation _ CY-MET-RIC

2023-509042-35-01 Protocol RC23_0286 Therapeutic exploratory (Phase II) Ongoing, recruiting

Start 18 Jul 2024 · Status Ongoing, recruiting · 1 EU/EEA countries · 3 sites · Protocol RC23_0286

Overview

Sponsor-declared trial summary

Phase Therapeutic exploratory (Phase II)
Status Ongoing, recruiting
Participants planned 82
Countries 1
Sites 3

Adults patients will be included in the hematology departments. Eligible patients will be those scheduled to receive an allo-HSC after a RIC conditioning regimen for a myeloid or lymphoid hematological malignancy with a family or non-family HLA-matched donor 10/10

To estimate the incidence of grade 3-4 corticoresistant acute GVHD following allo-CSH (excluding post-DLI acute GVHD) for all patients and for each conditioning group (Baltimore and TBF)

Key facts

Sponsor
Centre Hospitalier Universitaire De Nantes
Participant type
Patients
Age range
18-64 years, 65+ years
Gender
Male and Female
Therapeutic area
Diseases [C] - Immune System Diseases [C20], Diseases [C] - Hemic and Lymphatic Diseases [C15]
Trial duration
18 Jul 2024 → ongoing
Decision date (initial)
2024-04-08
Transition trial
No
Low-intervention
No
Rare-disease indication
No
Vulnerable population
No
Funding sources
DGOS PHRC inter-régional 2022

External identifiers

EU CT number
2023-509042-35-01
ClinicalTrials.gov
NCT06252870

Trial design

CTIS Part I — objectives, methods, condition coding

Main objective

Scope: Safety

To estimate the incidence of grade 3-4 corticoresistant acute GVHD following allo-CSH (excluding post-DLI acute GVHD) for all patients and for each conditioning group (Baltimore and TBF)

Secondary objectives 12

  1. Incidence of engraftment (on the total population and for each conditioning group (Baltimore and TBF))
  2. Overall survival (OS) (on the total population and for each conditioning group (Baltimore and TBF))
  3. Disease-free survival (DFS) (on the total population and for each conditioning group (Baltimore and TBF))
  4. GVH-free and relapse-free survival (GRFS) (on the total population and for each conditioning group (Baltimore and TBF))
  5. Incidence of acute GVH grade 2-4 (on the total population and for each conditioning group (Baltimore and TBF))
  6. Incidence of chronic GVH (on the total population and for each conditioning group (Baltimore and TBF))
  7. Incidence of non-relapse mortality (NRM) (on the total population and for each conditioning group (Baltimore and TBF))
  8. Incidence of relapse (on the total population and for each conditioning group (Baltimore and TBF))
  9. Study of chimerism (on the total population and for each conditioning group (Baltimore and TBF))
  10. Immune reconstitution: T, NK, B lymphocytes and monocytes (on the total population and for each conditioning group (Baltimore and TBF))
  11. Grade 3 and 4 post-transplant adverse events (on the total population and for each conditioning group (Baltimore and TBF))
  12. Incidence of viral, bacteriological, fungal and parasitic infections (on the total population and for each conditioning group (Baltimore and TBF))

Conditions and MedDRA coding

Adults patients will be included in the hematology departments. Eligible patients will be those scheduled to receive an allo-HSC after a RIC conditioning regimen for a myeloid or lymphoid hematological malignancy with a family or non-family HLA-matched donor 10/10

Study design 2 periods

#TitleAllocationBlindingRoles blindedArms
1 overall trial
Phase 2 muticentric randomized 1: 1 open prospective study aiming is to estimate the incidence of corticoresistant grade 3-4 acute GVHD following allo-CSH (excluding post-DLI acute GVHD) for all patients eligible to HSC allograft and for each conditioning regimen group (RIC conditioning regiemn Baltimore and TBF). Randomization will be open-ended and unstratified. It will be carried out according to a 1:1 ratio and will be balanced by blocks of variable size. Randomization will be performed in Ennov Clinical by connecting to the website. The randomization arm will be assigned automatically during randomization. Randomization is non-controlled
Not Applicable None Baltimore conditioning regimen: Baltimore-type conditioning with either fludarabine for lymphoid pathologies, or clofarabine for myeloid pathologie is composed of:
- fludarabine or clofarabine: 30 mg/m² on D-6/D-5-/D-4/D-3/D-2
- CY (cyclophosphamide): 14.5 mg/kg on D-6/D-5
- Total body irradiation: 2 grays on D-1 (doses of chemotherapy will not exceed a body surface area of 2 m²)
- anti-thymoglobulin: ATG 2.5 mg/kg on D-2

Theh, GVH prophylaxis is identical according to the type of conditioning randomized Baltimore or TBF:
- MTX: 15 mg/m² at D+1 then 10 mg/m² at D+4/D+6/D+11
- Post transplant CY (PTCY): 50 mg/kg at D+3/D+5

MTX (experimental drug) is a solution for injection containing 5 g MTX in 50 mL. The excipient is sodium chloride 0.9%. MTX is administered by the venous route as a short infusion over 30 minutes. The drug is pre-diluted in 20ml of 0.9% sodium chloride solution. The administration of folinic acid 15 mg/m² is recommended within 6 to 24 hours after MTX injection.
In the event of extravasation, administration should be stopped immediately. No dose adjustment is authorized.

PTCY (auxiliary drug) is a powder for injectable solution : Cyclophosphamide anhydrous 1000.00 mg as cyclophosphamide 1069.00 mg for one vial. Excipient is sodium chloride.

To prepare a ready-to-use isotonic solution, the powder should be dissolved in a 0.9% sodium chloride solution to bring the concentration to 1g per 50ml. If required, it can also be dissolved in Ringer's solution, water for injection or glucose solution. The reconstituted solution should not be stored for longer than 48 hours, and should not exceed a concentration of 2%. The usual route of administration is venous infusion over 1 hour. The drug, reconstituted in 0.9% sodium chloride solution, is introduced into the infusion fluid (isotonic glucose or sodium chloride solution for injection). It is recommended to combine the administration of Uromitexan from 600 mg/m²/d and/or to ensure adequate hydration.
In the event of extravasation, administration should be stopped immediately.

No dose adjustment is authorized, as it is not intended to include patients with renal impairment (creatinine clearance < 60 ml/min).
2 overall trial
Phase 2 muticentric randomized 1: 1 open prospective study aiming is to estimate the incidence of corticoresistant grade 3-4 acute GVHD following allo-CSH (excluding post-DLI acute GVHD) for all patients eligible to HSC allograft and for each conditioning regimen group (RIC conditioning regiemn Baltimore and TBF). Randomization will be open-ended and unstratified. It will be carried out according to a 1:1 ratio and will be balanced by blocks of variable size. Randomization will be performed in Ennov Clinical by connecting to the website. The randomization arm will be assigned automatically during randomization. Randomization is non-controlled
Not Applicable None TBF conditioning regimen: TBF conditioning for patients with myeloid and lymphoid hemopathies is unique and composed of:
- thiotepa: 5 mg/kg at D-6
- busulfan: 3.2mg/kg at D-2 and D-1
- fludarabine: 40 mg/m² at D-5/D-4/D-3/D-2
- ATG: 2.5 mg/kg on D-1

Theh, GVH prophylaxis is identical according to the type of conditioning randomized Baltimore or TBF:
- MTX: 15 mg/m² at D+1 then 10 mg/m² at D+4/D+6/D+11
- Post transplant CY (PTCY): 50 mg/kg at D+3/D+5

MTX (experimental drug) is a solution for injection containing 5 g MTX in 50 mL. The excipient is sodium chloride 0.9%. MTX is administered by the venous route as a short infusion over 30 minutes. The drug is pre-diluted in 20ml of 0.9% sodium chloride solution. The administration of folinic acid 15 mg/m² is recommended within 6 to 24 hours after MTX injection.
In the event of extravasation, administration should be stopped immediately. No dose adjustment is authorized.

PTCY (auxiliary drug) is a powder for injectable solution : Cyclophosphamide anhydrous 1000.00 mg as cyclophosphamide 1069.00 mg for one vial. Excipient is sodium chloride.

To prepare a ready-to-use isotonic solution, the powder should be dissolved in a 0.9% sodium chloride solution to bring the concentration to 1g per 50ml. If required, it can also be dissolved in Ringer's solution, water for injection or glucose solution. The reconstituted solution should not be stored for longer than 48 hours, and should not exceed a concentration of 2%. The usual route of administration is venous infusion over 1 hour. The drug, reconstituted in 0.9% sodium chloride solution, is introduced into the infusion fluid (isotonic glucose or sodium chloride solution for injection). It is recommended to combine the administration of Uromitexan from 600 mg/m²/d and/or to ensure adequate hydration.
In the event of extravasation, administration should be stopped immediately.

No dose adjustment is authorized, as it is not intended to include patients with renal impairment (creatinine clearance < 60 ml/min).

Regulatory references

Plan to share IPD
No
EU CT numberTitleSponsor
2023-509042-35-00 Randomized Phase 2 study testing two conditioning regimen with a single prophylaxis of graft-versus-host disease by cyclophosphamide and methotrexate post-transplant in patients eligible for matched-donor allograft transplantation _ CY-MET-RIC Centre Hospitalier Universitaire De Nantes

Eligibility criteria

Principal inclusion / exclusion criteria as submitted by sponsor

Inclusion criteria 11

  1. Age: ≥ 18 and ≤ 70 years
  2. Patient with hematologic malignancy
  3. Indication for allogeneic haematopoietic stem cell transplantation with attenuated conditioning
  4. Peripheric stem cell graft
  5. Availability of an HLA-matched 10/10 family or non-family donor
  6. Protocol consent
  7. ECOG <=2
  8. Women of childbearing age with negative pregnancy test and on highly effective contraception during treatment and for 12 months after discontinuation of CY and MTX
  9. Men of childbearing age with effective contraception during treatment and for 6 months after stopping CY and MTX
  10. Hepatitis B, C and HIV serologies negative.
  11. Social security affiliation

Exclusion criteria 17

  1. Prior allograft transplantation
  2. Patient eligible for myeloablative conditioning (MAC)
  3. Bone marrow graft
  4. Other active cancer disease, or history of cancer in the last two years, with the exception of skin carcinoma or carcinoma in situ of the uterine cervix treated and in remission
  5. Active psychiatric condition
  6. Pregnant or breast-feeding woman
  7. Women or men of childbearing age without effective contraception
  8. Severe, uncontrolled concomitant infection
  9. Cardiac: systolic ejection fraction < 50% by transthoracic echocardiography or isotopic method (isotopic gamma-angiography), NYHA II, III or IV heart failure, active rhythmic, valvular or ischemic heart disease or history of heart disease
  10. Respiratory: DLCOc < 40% of theoretical value on EFR
  11. Renal: creatinine clearance < 50 ml/min (assessed by MDRD method)
  12. Urological: active urinary tract infection, history of acute urothelial toxicity due to cytotoxic chemotherapy or radiotherapy, known obstruction of urinary outflow, pre-existing hemorrhagic cystitis
  13. Hepatic: transaminases greater than 5 times normal or bilirubin greater than 2 times normal
  14. Person protected by law (adult under guardianship, curatorship or safeguard of justice)
  15. accination against yellow fever within the last year
  16. Known or suspected hypersensitivity to rabbit proteins
  17. Patient does not speak French

Endpoints

Primary and secondary outcome measures (English text)

Primary endpoints 1

  1. The incidence of corticoresistant grade 3 and 4 acute GVH following allo-HSC according to Mount Sinai criteria. Corticoresistance is assessed according to the criteria of Mohty et al and defined as either -> after 5 to 7 days of 2 mg/kg systemic corticosteroids: worsening or non-improvement of GVH -> after 14 days of 2 mg/kg systemic corticosteroids: absence of complete remission of GVHD. Corticoresistant acute GVH following DLI injection will be excluded

Secondary endpoints 12

  1. Graft uptake assessed on hematological reconstitution (number of days of aplasia with PNN <0.5 G/L and platelets < 20, number of platelet and red cell concentrate transfusions)
  2. OS at 1 year and last follow-up (survival between day 0 of transplantation and date of death or last follow-up)
  3. DFS at 1 year and last follow-up (survival from day 0 of transplantation to date of relapse, death or last follow-up)
  4. GRFS at 1 year and last follow-up (relapse-free survival without grade 3-4 acute GVH or chronic GVH requiring systemic treatment)
  5. Acute GVHD grade 2-4 according to Mount Sinai criteria
  6. Chronic GVHD according to NCI criteria
  7. NRM: any death unrelated to relapse or disease progression at 1 year and last follow-up
  8. Relapse: any documented disease recurrence at 1 year and last follow-up
  9. Total donor or mixed chemism at M1, M2, M3, M6, M12. Total donor chimerism = result >95% donor CD3+ and CD34+ cells. Mixed chimerism = result > 5% and < 95% donor CD3+ cells (routine test)
  10. Immune reconstitution at M3, M6, M9, M12: lymphocyte, monocyte, T4, T8, NK and B cell counts (routine examination)
  11. Grade 3 and 4 post-transplant adverse events (dates of occurrence) (NCI CTCAE version 5 criteria)
  12. Infections: viral (CMV, EBV, BKV, adenovirus), bacteriological, fungal and parasitic

Investigational products

Investigational medicinal products (IMPs), comparators, placebo, auxiliary

Test 2

Cyclophosphamide

SUB06859MIG · Substance

Active substance
Cyclophosphamide
Pharmaceutical form
SOLUTION FOR INJECTION/INFUSION
Route of administration
INTRAVENOUS USE
Max daily dose
50 mg/kg milligram(s)/kilogram
Max total dose
100 mg/kg milligram(s)/kilogram
Max treatment duration
2 Day(s)
Authorisation status
Authorised
ATC code
- — -
Marketing authorisation
-
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Methotrexate

SUB08856MIG · Substance

Active substance
Methotrexate
Pharmaceutical form
SOLUTION FOR INJECTION
Route of administration
INTRAVENOUS USE
Max daily dose
15 mg/m2 milligram(s)/sq. meter
Max total dose
60 mg/m2 milligram(s)/sq. meter
Max treatment duration
11 Day(s)
Authorisation status
Authorised
ATC code
- — -
Marketing authorisation
-
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
Yes
Modification description
Labelling

Auxiliary 6

Busulfan

SUB05993MIG · Substance

Active substance
Busulfan
Pharmaceutical form
CONCENTRATE FOR SOLUTION FOR INJECTION
Route of administration
INTRAVENOUS USE
Max daily dose
3.2 mg/kg milligram(s)/kilogram
Max total dose
6.4 mg/kg milligram(s)/kilogram
Max treatment duration
2 Day(s)
Authorisation status
Authorised
ATC code
- — -
Marketing authorisation
-
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Cyclophosphamide

SUB06859MIG · Substance

Active substance
Cyclophosphamide
Pharmaceutical form
INJECTION/INFUSION
Route of administration
INTRAVENOUS USE
Max daily dose
14.5 mg/kg milligram(s)/kilogram
Max total dose
29 mg/kg milligram(s)/kilogram
Max treatment duration
2 Day(s)
Authorisation status
Authorised
ATC code
- — -
Marketing authorisation
-
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Anti-Human T-Lymphocyte Immunoglobulin From Rabbits

SUB21246 · Substance

Active substance
Anti-Human T-Lymphocyte Immunoglobulin From Rabbits
Pharmaceutical form
SOLUTION FOR INFUSION
Route of administration
INTRAVENOUS USE
Max daily dose
2.5 mg/kg milligram(s)/kilogram
Max total dose
2.5 mg/kg milligram(s)/kilogram
Max treatment duration
1 Day(s)
Authorisation status
Authorised
ATC code
- — -
Marketing authorisation
-
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Thiotepa

SUB10985MIG · Substance

Active substance
Thiotepa
Pharmaceutical form
SOLUTION FOR INJECTION/INFUSION
Route of administration
INTRAVENOUS USE
Max daily dose
5 mg/kg milligram(s)/kilogram
Max total dose
5 mg/kg milligram(s)/kilogram
Max treatment duration
1 Day(s)
Authorisation status
Authorised
ATC code
- — -
Marketing authorisation
-
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Fludarabine

SUB07678MIG · Substance

Active substance
Fludarabine
Pharmaceutical form
SOLUTION FOR INJECTION/INFUSION
Route of administration
INTRAVENOUS USE
Max daily dose
30 mg/m2 milligram(s)/sq. meter
Max total dose
150 mg/m2 milligram(s)/sq. meter
Max treatment duration
5 Day(s)
Authorisation status
Authorised
ATC code
- — -
Marketing authorisation
-
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Clofarabine

SUB21902 · Substance

Active substance
Clofarabine
Pharmaceutical form
SOLUTION FOR INFUSION
Route of administration
INTRAVENOUS USE
Max daily dose
30 mg/m2 milligram(s)/sq. meter
Max total dose
150 mg/m2 milligram(s)/sq. meter
Max treatment duration
5 Day(s)
Authorisation status
Authorised
ATC code
- — -
Marketing authorisation
-
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Centre Hospitalier Universitaire De Nantes

Sponsor organisation
Centre Hospitalier Universitaire De Nantes
Address
5 Allee De L Ile Gloriette, Cs 69301 Cs 69301
City
Nantes Cedex 1
Postcode
44093
Country
France

Scientific contact point

Organisation
Centre Hospitalier Universitaire De Nantes
Contact name
Dr Amandine Le Bourgeois

Public contact point

Organisation
Centre Hospitalier Universitaire De Nantes
Contact name
Dr Amandine Le Bourgeois

Locations

1 EU/EEA country · 3 investigational sites

By country

CountryMS statusPlanned subjectsSites
France Ongoing, recruiting 82 3
Rest of world 0

Investigational sites

France

3 sites · Ongoing, recruiting
Centre Hospitalier Universitaire De Nantes
Hematology, 1 Place Alexis Ricordeau, 44000, Nantes
Centre Hospitalier Universitaire D'Angers
Hematology, 4 Rue Larrey, 49100, Angers
Centre Hospitalier Regional Et Universitaire De Brest
Hematology, 5 Avenue Marechal Foch, Bp 824, Brest Cedex 2

Country notifications

Trial-start, recruitment-start, end and early-termination notifications submitted per Member State

Country Trial startTrial end Recruitment startRecruitment end Early termination
France 2024-07-18 2024-07-18

Results and documents

Annex IV summary of results, Annex V layperson summary, and all documents registered in CTIS for this trial

Documents 5 files

Public protocol annexes, IB summaries, regulatory submissions and post-authorisation documents registered in CTIS.

TypeTitleVersion
Protocol (for publication) D1_Protocol 2023-509042-35-00 Redacted 4.0
Recruitment arrangements (for publication) K1_recruitment arrangements 1
Subject information and informed consent form (for publication) L1_ SIS and ICF adult 2.0
Summary of Product Characteristics (SmPC) (for publication) G2_SmPC_Methotrexate_2023-04-04 1
Synopsis of the protocol (for publication) D1_Protocol synopsis MS FR 2023-509042-35-00 2.0

Application history

4 submissions — initial application plus substantial / non-substantial modifications

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2024-01-15 France Acceptable
2024-04-05
2024-04-08
2 SUBSTANTIAL MODIFICATION SM-1 2024-06-11 France Acceptable
2024-08-23
2024-08-23
3 SUBSTANTIAL MODIFICATION SM-2 2025-02-03 France Acceptable
2025-03-20
2025-03-20
4 SUBSTANTIAL MODIFICATION SM-3 2025-05-22 France Acceptable
2025-06-19
2025-06-19