NCT05948033

CD70 Targeted CAR-T Cells in CD70 Positive Relapsed/Refractory Lymphoma

Phase I/II Study of CD70 Targeted CAR-T Cell Treatment in CD70 Positive Relapsed/Refractory Lymphoma

• Status: Recruiting
• Phase: Phase 1 / Phase 2
• Study type: Interventional
• Enrollment: 30 (estimated)
• Sponsor: Chinese PLA General Hospital · Academic / Other
• Sex: All
• Age: 18 Years – 75 Years
• Healthy volunteers: Not accepted

Summary

In this single-center, single-arm,prospective, open-label, phase 1/2 study, the safety and efficacy of autologous CD70 targeted chimeric antigen receptor modified T (CAR-T) cell therapy will be evaluated in patients with CD70 antigen positive Relapsed/Refractory Lymphoma . In this clinical trial, at least 12 eligible patients in dose escalation period will be enrolled to receive 3 doses of CD70-CAR cell therapy according to the "3+3" principle. In dose expansion period, additional at most 21 eligible patients will be enrolled to receive CD70-CAR-T cell therapy at dose of recommended phase 2 dose(RP2D).

Detailed description

CAR-T cell therapy has been identified as a breakthrough therapy in hematologic malignancies,especially anti-CD19 CAR-T cell therapy in the treatment of r/r B-NHL has achieved remarkable efficacy.However, relapse with CD19-negative tumor after treatment with anti-CD19 CAR-T cells has been reported in different types of B-cell lymphoid malignancies, with a percentage up to 38% in patients with non-Hodgkin lymphoma (NHL).At present, the CAR-T cell treatment for HL is mainly confined to CD30 antigen,with an objective response rate (ORR) only 38%\~62%. Therefore, a more effective treatment strategy is needed for these patients. CD70, the membrane-binding ligand of the CD27 (a tumor necrosis factor receptor superfamily), has been reported to mediate tumour cell proliferation and be expressed on the malignant cells of diffuse large B-cell lymphoma (DLBCL)，mantle cell lymphoma (MCL) and follicular lymphomas (FL), as well as Hodgkin lymphoma, etc,but rarely on normal B cells or T cells,indicating CD70 targeted treament has emerged as potentialnovel immunotherapeutic strategy.Preclinical study demonstrated CD70-CAR-T cells represent a new therapeutic option for the treatment of patients with CD19-negative recurrence of lymphoma.Based on the preclinical data, we conduct this clinical trial in order to test the the safety profiles and anti-tumor activities of CD70-CAR-T cells in vivo. In dose escalation period, at least 12 eligible patients will be enrolled and receive 3 doses of CD70-CAR-T cell therapy (1 × 10\^6 cells/kg, 3 × 10\^6 cells/kg, 1 × 10\^7 cells/kg) according to the "3+3" principle. In dose expansion period, additional at most 21 eligible patients will be enrolled to receive CD70-CAR-T cell infusion at dose of RP2D, which is determined by data from dose escalation period, including occurrence of dose limiting toxicities(DLT), pharmacokinetics/pharmacodynamics, efficacy and other parameters, to furtherly evaluate the safety and efficacy profiles of CD70-CAR-T cell therapy.

Conditions

• Lymphoma

Interventions

Type	Name	Description
BIOLOGICAL	CD70-targeting CAR-T cells	Dose escalation: Dose1 (1×10\^6 cells/kg) ,Dose 2(3×10\^6 cells/kg) ,Dose 3 (1×10\^7 cells/kg) Doseexpansion: RP2D Drug: Fludarabine Intravenous fludarabine 25-30 mg/m\^2/day on days 5, -4, and -3. Drug: Cyclophosphamide Intravenous cyclophosphamide 300-500 mg/m\^2/day on days -5, -4, and -3.

Timeline

• Start date: 2023-07-15
• Primary completion: 2025-12-31
• Completion: 2026-12-31
• First posted: 2023-07-17
• Last updated: 2023-07-17

Locations

1 site across 1 country: China