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Clinical Trials/2023-507879-21-00
2023-507879-21-00
Not yet recruiting
Phase 2

Randomized Evaluation of Treosulfan versus Melphalan conditioning fol-lowed by PTCY in Patients with AML and MDS undergoing allogeneic Transplantation (RELEVANT)

Technische Universitat Dresden15 sites in 1 country220 target enrollmentStarted: March 5, 2025Last updated:

Overview

Phase
Phase 2
Status
Not yet recruiting
Sponsor
Technische Universitat Dresden
Enrollment
220
Locations
15
Primary Endpoint
Overall survival (OS) as time-to-event endpoint

Overview

Brief Summary

To evaluate efficacy of fludarabine plus either treosulfan or melphalan in allogeneic HCT with PTCy-based GvHD prophylaxis in patients with AML in 1st or 2nd CR or patients with MDS.

Eligibility Criteria

Ages
18 years to 65+ years (65+ Years, 18-64 Years)
Accepts Healthy Volunteers
Yes

Inclusion Criteria

  • Signed informed consent form by patient
  • Men must agree to refrain from unprotected sex and sperm donation from time point of signing the informed consent until 6 months after the last dose of study drug
  • Women must fulfil at least one of the following criteria in order to be eligible for trial inclusion: a) post-menopausal (12 months of natural amenorrhoea or 6 months of amenorrhoea with serum FSH > 40 U/ml) b) postoperative (i.e.6 weeks) after bilateral ovariectomy with or without hysterectomy) c) Women of childbearing potential must have a negative serum pregnancy test performed within 7 days before the first dose of study drug d) continuous and correct application of a contraceptive method with an Pearl Index < 1% per year (e.g. implants, depots, oral contraceptives, intrauterine device – IUD) from time point of signing the informed consent until 6 months after the last dose of study drug e) sexual abstinence from time point of signing the informed consent until 6 months after the last dose of study drug f) Vasectomy of the sexual partner
  • Patient scheduled for allogeneic transplantation within the next 3 weeks
  • Age ≥ 18 years
  • AML or MDS according to WHO with indication for allogeneic HCT: a) AML in first or second complete remission (CR) or complete remission with incomplete hematologic recovery (CRi/CRh) or morphologic leukemia-free state (MLFS) b) MDS according to WHO
  • Increased risk for treatment-related toxicity by myeloablative conditioning according to at least one of the following criteria: a) Patients aged ≥ 50 years at transplant and/or b) HCT-CI > 2 and/or c) AML or MDS scheduled for 2nd allogeneic HCT from different donor with minimum of 12 months after 1st allogeneic HCT
  • Availability of a suitable donor: a) Matched sibling donor (MSD) or b) Matched unrelated donor (MUD, 10/10 HLA) or c) Mismatched unrelated donor (MMUD, single allele or antigen mismatch at HLA-A, -B, -C, or –DRB1 and no concurrent –DQB1 mismatch (9/10) shown by confirmatory typing) or d) haploidentical family donor
  • Planned GvHD prophylaxis with standard PTCy (with 50mg/kg body weight on days +3 and +4)
  • No history of cardiac disease that precludes allogeneic HCT and absence of active symptoms, otherwise, documented left ventricular ejection fraction ≥ 40 %

Exclusion Criteria

  • Patients with acute promyelocytic leukemia with t(15;17)(q22;q12)
  • Addictions or other illnesses that do not allow the person concerned to assess the nature and extent of the clinical trial and its possible consequences
  • Pregnant or breastfeeding women
  • Having received any unlicensed drug within 30 days or 5 half-lives, whichever is greater, prior to randomization
  • Indications that the subject is unlikely to adhere to the protocol (e.g., lack of compliance)
  • Patients with graft failure after previous allogeneic HCT
  • Patients with scheduled 2nd allogeneic HCT within 12 months after 1st allogeneic HCT
  • Pretreatment with either melphalan or treosulfan within the last 12 months prior to randomization
  • Planned TBI as part of conditioning
  • Severe organ dysfunction defined by either one of the following criteria: a) Serum bilirubin > 1.5 × ULN (if not considered Gilbert-syndrome) or b) ASAT or ASAT > 5 × ULN

Outcomes

Primary Outcomes

Overall survival (OS) as time-to-event endpoint

Overall survival (OS) as time-to-event endpoint

Secondary Outcomes

  • ­non-relapse mortality (NRM)
  • ­Graft-versus-host-free and relapse-free survival (GRFS)
  • ­Cumulative incidences of acute and chronic GvHD (NIH criteria)
  • ­Rates of AEs/SAEs/AESI
  • ­Cumulative incidence of relapse (CIR) and Relapse-free survival (RFS)
  • ­Rate of morphologic and molecular CR/CRh/CRi/MLFS
  • ­Rate of engraftment on day +28 and Rate of complete donor-type chimerism on day +28 and day +56

Investigators

Sponsor
Technische Universitat Dresden
Sponsor Class
Educational Institution
Responsible Party
Principal Investigator
Principal Investigator

Prof. Dr. med. Friedrich Stölzel

Scientific

Technische Universitat Dresden

Study Sites (15)

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