Phase 1 Study of Chemotherapy Plus HLA-mismatched GPBMC Infusion Bridging to Allo-HSCT for R/R Leukemia
Phase 1 Study of Chemotherapy Combining With HLA-mismatched G-CSF Mobilized Peripheral Blood Mononuclear Cell Infusion as a Bridge to Allogeneic Hematopoietic Stem Cell Transplantation for Relapsed and Refractory Leukemia
Beijing 302 Hospital
5 participants
Dec 1, 2025
INTERVENTIONAL
Conditions
Summary
This is a Phase 1 clinical study designed to evaluate the safety, tolerability, and preliminary efficacy of chemotherapy combining with HLA-mismatched G-CSF mobilized peripheral blood mononuclear cell (GPBMC) infusion as a bridging therapy to allogeneic hematopoietic stem cell transplantation (allo-HSCT) in patients with relapsed and refractory (R/R) leukemia.
Eligibility
Inclusion Criteria6
- Age \>=15 years, male or female, non-limited by race or ethnicity.
- Confirmed diagnosis of R/R leukemia and risk stratification according to the World Health Organization (WHO) 5th edition classification, based on histopathology and cytogenetics.
- Adequate hepatic function including alanine transaminase (ALT) and aspartate aminotransferase (AST )\<= 3 × upper limit of normal(ULN), and total bilirubin \<= 1.5 × ULN.
- Adequate renal function including serum creatinine \<= 2 × ULN or CrCl\>= 40mL/min.
- LVEF measured by echocardiogram is within the normal range (LVEF \> 50%).
- The subject must have one HLA mismatched donor who is \>= 18 years old to provide GPBMCs for the first-step infusion. If this donor is not qualified as an allo-HSCT donor, the subject must also have another donor who is \>= 18 years old and qualified as allo-HSCT donor (i.e., matched sibling, 9-10/10 loci matched unrelated, or haploidentical). In addition, the donor voluntarily donates hematopoietic stem cells and signs the consent form. Each subject (or his/her legal representatives) must sign the Informed Consent Form (ICF), indicating that he/she understands the purpose and procedures of research, and is willing to participate in research.
Exclusion Criteria8
- Uncontrolled infection or hemorrhage.
- Cardiovascular disease with clinical significance, such as uncontrolled or highly symptomatic cardiac arrhythmias, congestive heart failure, or myocardial infarction within 6 months prior to screening, or New York Heart Association (NYHA) function class 3 (moderate) or class 4 (severe) heart disease.
- Uncontrolled autoimmune disease or requiring immunosuppression treatment.
- History of severe blood infusion reaction.
- Nursing women, women of childbearing potential with positive urine pregnancy test, or women of childbearing potential who are not willing to maintain adequate contraception.
- Psychiatric disorder or cognitive impairment that in the researcher's judgment would make the subject not likely to adhere to the protocol requirements.
- Major surgery within 4 weeks prior to enrollment.
- Life-threatening illness other than leukemia or uncontrolled intercurrent illness.
Interventions
Available chemotherapy regimens include but not limited to FLAG (fludarabine, cytarabine, G-CSF), DAV (daunorubicin, cytarabine, venetoclax), IAV (idarubicin, cytarabine, venetoclax), VDCP (vincristine, daunorubicin, cyclophosphamide, prednisone), hyper-CVAD A (cyclophosphamide, vincristine, doxorubicin, dexamethasone), FC (fludarabine and cyclophosphamide), et al.
HLA-mismatched GPBMCs are infused following chemotherapy.
Patients receive conditioning including but not limited to fludarabine, cyclophosphamide, antithymocyte globulin (ATG), and total body irradiation (TBI). HLA-matched sibling/haploidentical/unrelated GPBMCs are infused at day 0. Post-transplant cyclophosphamide, tacrolimus/cyclosporin, and mycophenolate mofetil are administered as graft-versus-host disease prophylaxis.
Locations(1)
View Full Details on ClinicalTrials.gov
For the most up-to-date information, visit the official listing.
NCT07297173