NCT07087847Not yet recruiting
Ex Vivo T-Cell-Depleted Haploidentical Transplantation Bridging With Chimeric Antigen Receptor T-cell Therapy and Prophylactic Memory T Cell Infusion for Acute Leukemia
Prospective, Single-Center, Single-Arm Clinical Study of Ex Vivo T-Cell-Depleted Haploidentical Transplantation Bridging With Chimeric Antigen Receptor T-cell Therapy and Prophylactic Memory T Cell Infusion for Acute Leukemia
Source: ClinicalTrials.gov · Last updated 28 Jul 2025 · Not updated for over 12 months - ask the site whether it is still open
Brief summary (registry, in English)
CAR-T therapy has evolved as a pivotal treatment for relapsed/refractory (R/R) leukemia, demonstrating improved remission rates and manageable adverse events. However, over 50% of patients achieving complete remission (CR) experience relapse within one year (1-year cumulative incidence rate, CIR) due to antigen escape, CAR-T functional exhaustion, premature cell depletion, and immunosuppressive microenvironments. Novel strategies are urgently needed to sustain durable responses. Bridging CAR-T therapy with TCRαβ+ and CD45RA+ cell-depleted haploidentical hematopoietic stem cell transplantation (HSCT) offers dual benefits: Graft-versus-leukemia (GvL) effects mediated by donor-derived NK cells and γδT cells target non-CAR-dependent antigens, mitigating immune evasion. Rapid hematopoietic reconstitution reduces prolonged cytopenia-related complications from prior therapies. This protocol further incorporates prophylactic CD45RO+ memory T-cell (Tm) infusion to: Minimize graft-versus-host disease (GVHD) risks compared to conventional donor lymphocyte infusion (DLI). Enhance adoptive immunity against infections/relapse via transferred donor memory immunity. We design this prospective, single-center, single-arm trial to evaluate the efficacy/safety of this approach using the CliniMACS® system for ex vivo TCRαβ+/CD45RA+ depletion in R/R leukemia patients post-CAR-T.
- Status (registry)
- Not yet recruiting
- Study type
- Interventional
- Enrollment
- 18 (estimated)
- First submitted
- 15 Jul 2025
- Start date
- 1 Sept 2025
- Primary completion date
- 30 Jan 2028
- Lead sponsor
- Ruijin Hospital
- NCT number
- NCT07087847
What you commit to
- Study type: Interventional
- Planned participants: 18
- From 1 Sept 2025 to the primary completion date, 30 Jan 2028
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Presence of any absolute contraindication to hematopoietic stem cell transplantation.
Other
- Severe Comorbidities with Major Organ Dysfunction
Who the study is looking for
- Diagnosis: Patients with refractory or relapsed (R/R) leukemia.
- Donor Availability: No matched sibling or unrelated donor identified through HLA typing.
- Disease Status Post-CAR-T: including achieved complete remission (CR), minimal residual disease (MRD)-negative in bone marrow and no extramedullary relapse.
- Normal Organ Function (meeting the following criteria): including liver function: ALT/AST ≤10×ULN (upper limit of normal), total bilirubin (TBIL) ≤5×ULN, renal function: BUN and serum creatinine (Cr) ≤1.25×ULN and cardiac function: No evidence of cardiac insufficiency (confirmed by ECG and echocardiography).
- Informed Consent: a signed informed consent form (ICF) is obtained
Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Ruijin Hospital, Shanghai Jiao Tong University School of Medicine Coordinator of this site? Confirm its status | Shanghai | China | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.