Upfront Related Donor Transplantation in Patients With Myelodisplatic Syndrome : a Phase 2 Trial

NCT06235398 | Not Yet Recruiting Phase 2 DMC

• 1 other identifier: APHP221273
• Study Type: interventional
• Target: 55
• Locations: 0 countries
• Sites: N/A

Brief Summary

Three recent prospective "transplant/no transplant" studies concluded to an advantage of OS with transplantation in patients with high or intermediate-2 IPSS risk (not significant in Kröger's study). No prospective randomized trial has assessed the pre-transplant therapy in MDS patients yet but some information can be extracted from these 3 recent studies. In the French study (n=162), 72% patients with a donor received HSCT, previously treated by hypomethylating agent (HMA) in 71% of them. There was a trend to a better survival in patients achieving a complete remission with pre-graft therapy (HR: 0.55, p=0.088) and higher risk of death in unresponsiveness patients transformed into AML (HR: 2.36, p=0.008). In Nakamura's study (n=384), 83% of patients with a donor were transplanted, previously treated by HMA in 68%2. The multivariable Cox model for Overall Survival (OS) and Leukemia-free survival showed an excess risk in patients treated by HMA. Moreover, responders still have a higher risk of mortality as compared to patients who did not receive any pre-graft therapy (HR: 2.417, p=0.0054). In the German study, the aim was to initiate azacytidine at inclusion and to transplant patients after 4 cycles if a donor was identified1. Among 170 registered patients, 162 initiated 5-aza but 36% of them were "lost during this pre-graft therapy" before allocation to "donor" or "no-donor" arm, for different reasons including death (n=12). After 4 cycles of 5-aza, 79/81 patients "donor arm" were transplanted. The multivariable analysis showed remission status did not influence OS. Those 3 previous clinical trials thus suggest that a substantial number of patients planned for transplantation are not transplanted nowadays while no evidence of HMA benefit before HSCT has been clearly identified. This phase 2 study aim to assess the feasibility of upfront HSCT in patients with high risk MDS in order to increase the probability to be transplanted and to achieve a subsequent remission and better survival.

Conditions

Myelodysplastic Syndromes

Outcome Measures

Primary Outcomes (1)

• Disease-free survival

  2 years after transplantation

Secondary Outcomes (13)

• Overall survival

  2 years after transplantation

• Non-relapse mortality

  2 years after transplantation

• Cumulative incidence of transformation into acute myeloid leukemia from inclusion

  2 years after inclusion

• Incidence of acute Graft versus Host Disease (GvHD) and grading

  100 days after transplantation

• Incidence of chronic GvHD and grading

  2 years after transplantation

Study Arms (1)

Adults with Myelodysplasic Syndrome diagnosis

EXPERIMENTAL

Adults (Age ≥ 50 and ≤ 70 years) patients with MDS diagnosis for whom transplantation is indicated from a related donor identified.

Biological: Hematopoietic stem-cell transplantation

Interventions

Hematopoietic stem-cell transplantation BIOLOGICAL

Upfront related donor transplantation

Adults with Myelodysplasic Syndrome diagnosis

Eligibility Criteria

• Age: 50 Years - 70 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Age ≥ 50 and ≤ 70 years
• An HLA (Human Leukocyte Antigen) matched sibling donor or familial haplo-identical donor has been identified
• The disease fulfills at least one of the following criteria:
• Intermediate-2 or high risk according to classical International Prognostic Scoring System (IPSS)
• Intermediate-1 risk if marrow fibrosis \> grade I or poor risk cytogenetics according to R IPSS or classified high or very high risk according to Revised International Prognostic Scoring System (R IPSS) or if the MDS is therapy-related neoplasm
• Usual criteria for Hematopoietic Stem Cell Transplantation (HSCT):
• Eastern Cooperative Oncology Group Score (ECOG) ≤ 2
• No severe and uncontrolled infection
• Cardiac function compatible with high dose of cyclophosphamide Left Ventricular Function (LVF) \> 50%
• Adequate organ function: ASAT and ALAT ≤ 2.5N, total bilirubin ≤ 2N, creatinine clearance ≥ 30 ml/min (according to Cockroft formula)
• In case of transplantation with a haploidentical donor, absence of donor specific antibody (DSA) detected in the patient with a MFI \>1000 (antibodies directed towards the distinct haplotype between donor and recipient)
• Contraception methods must be prescribed for women of childbearing age during all the study. If cyclophosphamide is used, effective contraceptive methods for men during all their participation in the study
• With health insurance coverage
• With a written informed consent signed

You may not qualify if:

• MDS with excess blast \>10% and NPM1 mutation or a recurrent genetic abnormality related to Acute Myeloid Leukemia (AML) (WHO 2022)
• Chemotherapy (AML like intensive chemotherapy or demethylating agent) to treat MDS at the current stage
• Disponibility of an unrelated donor 10/10 (MUD) in absence of geno-identical donor
• Patient with uncontrolled infection
• Cancer in the last 5 years (except basal cell carcinoma of the skin or "in situ" carcinoma of the cervix
• Renal failure with creatinine clearance \<30ml / min (according to Cockroft formula)
• With contraindications to treatments used during the research
• Uncontrolled coronary insufficiency, recent myocardial infarction \<6 month, current manifestations of heart failure, uncontrolled cardiac rhythm disorders, ventricular ejection fraction \<50%
• With heart failure according to NYHA (II or more)
• Patient with seropositivity for HIV or HTLV-1 or active hepatitis B or C defined by a positive PCR Hepatitis B Virus or Hepatitis C Virus
• Yellow fever vaccine or any alive vaccine within 2 months before transplantation
• Pregnancy (β-HCG positive) or breast-feeding
• Who have any debilitating medical or psychiatric illness, which would preclude giving well understand informed consent or optimal treatment and follow-up
• Under protection by law (tutorship or curatorship)

Sponsors & Collaborators

• Assistance Publique - Hôpitaux de Paris: lead

MeSH Terms

Conditions

Myelodysplastic Syndromes

Interventions

Stem Cell Transplantation

Condition Hierarchy (Ancestors)

Bone Marrow Diseases; Hematologic Diseases; Hemic and Lymphatic Diseases

Intervention Hierarchy (Ancestors)

Cell Transplantation; Cell- and Tissue-Based Therapy; Biological Therapy; Therapeutics; Transplantation; Surgical Procedures, Operative

Central Study Contacts

Marie Robin, Dr

CONTACT

+33142499639; marie.robin@aphp.fr

Jérôme Lambert, Dr

CONTACT

+33142499742; jerome.lambert@u-paris.fr

Study Design

• Study Type: interventional
• Phase: phase 2
• Allocation: NA
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: January 23, 2024
• First Posted: January 31, 2024
• Study Start: February 1, 2024
• Primary Completion (Estimated): February 1, 2028
• Study Completion (Estimated): February 1, 2028
• Last Updated: January 31, 2024

Record last verified: 2023-08