Comparing two treatment regimens for adults with acute myeloid leukemia before stem cell transplant
Official title: FLUCLORIC: Randomized Multicentric Phase III Study Comparing the Efficacy of 2 Reduced Intensity Conditioning Regimens (Clofarabine/Busulfan vs Fludarabine/Busulfan) in Adults With AML and Eligible to Allogeneic Stem Cell Transplantation
Run by Nantes University Hospital · NCT05917405 · Data updated 2026-11-12
This study is testing if a treatment using Clofarabine helps adults with acute myeloid leukemia live longer after a stem cell transplant compared to another treatment with Fludarabine.
Quick facts
| Phase | Phase 2 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 99 Years |
| Sex | All |
| Enrollment | 302 (estimated) |
| Sponsor | Nantes University Hospital Academic / other |
| Drugs / interventions | Fludarabine |
| Locations | 23 sites (Nantes, Loire Atlantique and 22 other locations) |
| Status | Recruiting |
| Started | September 14, 2023 |
| Main results expected | September 14, 2028 |
| Study ends | September 14, 2028 |
| Registry record updated | January 30, 2026 |
| Trial ID | NCT05917405 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults aged 18 and older with de novo or secondary AML in complete remission, eligible for a reduced-intensity conditioning regimen.
✕Probably not a fit
Patients with active disease or those not eligible for a reduced-intensity conditioning regimen may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This study aims to compare the efficacy of two reduced-intensity conditioning regimens, Clofarabine and Fludarabine, in adults with acute myeloid leukemia (AML) who are in complete remission and eligible for allogeneic stem cell transplantation. The trial will include 302 patients, with the primary objective of demonstrating a significant improvement in 2-year overall survival rates for those receiving the Clofarabine regimen. Additionally, the study will conduct cost-utility and cost-effectiveness analyses, as well as assess the quality of life post-transplant. The results will help establish the superiority of CloB2A2 over FB2A2 in this patient population.
Why it matters
Potential benefit: If successful, this study could lead to improved survival rates for AML patients undergoing stem cell transplantation.
How similar studies have gone: Retrospective studies have shown promising results for Clofarabine compared to Fludarabine, suggesting potential success for this prospective trial.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: Age ≥ 18 years' old * De novo or secondary AML (according to ELN 2022 classification) in complete cytological remission at time of transplant (bone marrow blast count \< 5%) or MDS/LAM with bone marrow blast count ≤ 5% * Patients in first or second line therapy are allowed * Patient eligible to a RIC regimen : patients aged ≥ 60 year old or \<60 with co-morbidity(ies). * Patient with a related or an unrelated matched donor * Graft using only peripheral blood stem cells * Performance status ECOG 0 - 2 * Who provide their written informed consent * Previous allograft allowed * Affiliated with French social security system or beneficiary from such system * Women must meet one of the following criteria at the time of inclusion: * use adequate contraceptive measures as recommended by the CTFG (Recommendations related to contraception and pregnancy testing in clinical trials v1.1; includes injectable implants, dual hormone birth control pills, intrauterine devices, abstinence from sex, or a sterilized partner), and have a negative pregnancy test (urine or serum pregnancy test) prior to receiving the first dose of study drug; * or be post-menopausal (over 50 years of age with amenorrhea for at least 12 months after discontinuation of all exogenous hormonal therapy) * or (if under 50 years of age) have been amenorrheic for at least 12 months after discontinuation of exogenous hormonal therapy and with luteinizing hormone (LH) and follicle stimulating hormone (FSH) levels corresponding to post-menopausal levels * or have undergone irreversible surgical sterilization by hysterectomy, bilateral oophorectomy or bilateral salpingectomy (this operation must be documented). * Contraception methods must be prescribed using effective contraceptive methods during treatment and within 6 months for women of childbearing age (WOCB) and 6 months for men in case they have sexual relations with WOCB after the last dose of Fludarabine/Clofarabine. Exclusion Criteria: * Pro-myelocytic leukemia * Patient eligible to a myeloablative conditioning regimen * Patient with haploidentical, mismatched unrelated donor or umbilical cord blood * Pregnant or breastfeeding woman or patient refusing contraceptive mesures * HIV positive * Active Hepatitis B or C * Left ventricular ejection fraction \< 50%. * DLCOc \<40% * Uncontrolled infection * Uncontrolled haemolytic anaemia * Creatinine clearance \< 50 ml/min (evaluated by MDRD or CKDEPI). * Serum bilirubine \> 30 mmol/l, Cytolysis \> 5 the upper limit range * Previous or concurrent second malignancy except for adequately treated basal cell carcinoma of the skin, curatively treated in situ carcinoma of the cervix, curatively treated solid cancer, with no evidence of disease for at least 2 years * Any psychological, familial, sociological or geographical condition potentially hampering compliance with the study protocol and follow-up schedule * Participation to another interventional study during the last month or expected participation to another interventional study during participation to the FLUCLORIC study.
Where it's running
-
CHU de Nantes
Nantes, Loire Atlantique, France Recruiting -
CHU Amiens
Amiens, France Recruiting -
CHU Angers
Angers, France Recruiting -
CHU Besançon
Besançon, France Recruiting -
CHU Brest
Brest, France Recruiting -
CRLC Caen
Caen, France Recruiting
Show 17 more locations
-
CHU Clermont-Ferrand
Clermont-Ferrand, France Recruiting -
APHP Créteil
Créteil, France Recruiting -
CHU Grenoble
Grenoble, France Recruiting -
CHU Limoges
Limoges, France Recruiting -
CHU Lyon
Lyon, France Recruiting -
Institut Paoli Calmettes
Marseille, France Recruiting -
CHU Montpellier
Montpellier, France Recruiting -
CHRU Nancy
Nancy, France Recruiting -
CHU Paris St-Louis
Paris, France Recruiting -
Pitie-Salpetriere, APHP
Paris, France Recruiting -
St-Antoine, APHP
Paris, France Recruiting -
CHU Rennes
Rennes, France Recruiting -
CHU St-Etienne
Saint-Etienne, France Recruiting -
CRLC Toulouse
Toulouse, France Recruiting -
CHU Bordeaux
Bordeaux, France Not yet recruiting -
CHRU Lille
Lille, France Not yet recruiting -
CHU Poitiers
Poitiers, France Not yet recruiting
Study contacts
- Principal investigator: patrice CHEVALLIER, Pr — Nantes University Hospital
- Study coordinator: Patrice CHEVALLIER, Pr
- Email: patrice.chevallier@chu-nantes.fr
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.