Reduced Toxicity Conditioning Prior to Unrelated Cord Cell Transplantation for High Risk Myeloid Malignancies (TBF-Cord)
Leukemia, Myeloid
About this trial
This is an interventional other trial for Leukemia, Myeloid focused on measuring Cord Cell Transplantation, High risk myeloid malignancies
Eligibility Criteria
Inclusion Criteria:
- Age ≥18 years and ≤ 65 years
- Patients diagnosed with one of the following diseases (validation of the indication of allogeneic
HSCT with an alternative source of hematopoietic stem cells by centers' local RCP):
- Acute myelogenous leukemia (AML) with intermediate or high risk features ((≥ intermediate risk 1) in CR1 or above according to centers' decision
- Myelodysplastic syndromes with International Prognostic Scoring System (IPSS) score ³ 2 (cf. appendix 3) or with symptomatic pancytopenia according to centers' decision
- Chronic myelomonocytic leukemia (CMML)
- Both MDS and CMML should have ≤ 10% blasts at transplantation
- Absence of a matched sibling or unrelated donor (10/10 or 9/10 if mismatch on HLA Cw, based on each center's donor selection criteria)
- Cord blood units must be matched with patient at 4, 5, or 6/6 HLA loci, (class I antigenic & class II allelic level)with a minimum of 3.5 x 10^7 TNC/kg recipient body weight in the pre-thawed fraction and with ≥2.5x10^7 TNC/kg for the richest cord blood unit and ≥ 1.5x10^7 TNC/kg for the poorest blood unit in case of 2 cord blood units
- Performance status : OMS score ≤ 1 (cf. appendix 5)
- Cardiac function - left ventricular ejection fraction ≥ 45%.
- Pulmonary function - diffusion capacity of at least 50% predicted.
- Serum creatinine clearance 0 ml/min.
- SGPT 4x normal , serum bilirubin < 2 x normal.
- Written informed consent.
- Progestative treatment for women with persisting menstrual periods
Exclusion Criteria:
- Presence of a matched sibling or unrelated available donor (10/10 or 9/10 if mismatch on HLA Cw in centers performing 9/10 HLA mismatched transplants)
- Active infection at time of conditioning. In case of uncertainty regarding whether a previous infection is resolved or not, this will be discussed with the PI on a case by case basis.
- Pregnancy in women with child bearing potential (pregnancy test performed within 2-4 weeks of study entry).
- HIV positive
- Active CNS leukemia
- Chronic or active Hepatitis B or Hepatitis C. If questions about liver health discuss with PI and strongly consider liver biopsy.
- Poor performance status : OMS score > 1
- Life expectancy is severely limited by concomitant illness and expected to be <12 weeks.
- Left ventricular ejection fraction <45%. Uncontrolled arrhythmias or symptomatic cardiac disease.
- Symptomatic pulmonary disease. FEV1, FVC and DLCO <50% of expected corrected for hemoglobin.
- Serum creatinine clearance (Crockoft) below 50 mL/m per 1.73 m² or requiring dialysis
- Vaccination with alive vaccine (virus or bacteria) < 3 months
- Fludarabine contra-indication
- Thymoglobuline contra-indication
- Patient under guardianship or curatorship
Sites / Locations
- Hôpital de Brabois, Hématologie Clinique et thérapie cellulaire
Arms of the Study
Arm 1
Experimental
Reduced toxicity conditioning regimen
Reduced toxicity conditioning regimen (thiotepa, busulfan, fludarabine and ATG) followed by unrelated cord blood allogeneic stem cell transplant for high risk myeloïd malignancies. The conditioning regimen will include: IV Thiotepa (5 mg/Kg/day for 2 days) (Day -7 and -6) IV fludarabine (40 mg/m²/day for 4 days) (from Day-5 to day -2) IV Busulfan (Busilvex 130 mg/m2/day for 3 days) (Day-5, -4 and -3) IV Anti-thymocyte globuline (Thymogobuline®, 2.5 mg/kg/day for 2 days) (Day-3 and -2) In patient with co-morbidities and/or older than 60 years, conditioning could be reduced after consulting the coordinator of the study: IV Thiotepa (5 mg/Kg/day for 2 days) (Day -6) IV fludarabine (40 mg/m²/day for 4 days) (from Day-5 to day -2) IV Busulfan (Busilvex 100 mg/m2/day for 3 days) (Day-5, -4 and -3) IV Anti-thymocyte globuline (Thymogobuline®, 2.5 mg/kg/day for 2 days) (Day-3 and -2)