NCT04484012

Modified Immune Cells (CD19 CAR T Cells) and Acalabrutinib for the Treatment of Relapsed or Refractory Mantle Cell Lymphoma

A Phase 2 Study to Evaluate CD19-Specific Chimeric Antigen Receptor (CAR)-T Cells Combined With Acalabrutinib for Patients With Relapsed or Refractory Mantle Cell Lymphoma (MCL)

• Status: Recruiting
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 36 (estimated)
• Sponsor: City of Hope Medical Center · Academic / Other
• Sex: All
• Age: 18 Years – 75 Years
• Healthy volunteers: Not accepted

Summary

This phase II trial investigates the side effects of CD19 chimeric antigen receptor (CAR) T cells and acalabrutinib, and to see how well they work in treating patients with mantle cell lymphoma that has come back (relapsed) or does not respond to treatment (refractory). T cells are infection fighting blood cells that can kill cancer cells. The T cells given in this study will come from the patient and will have a new gene put in them that makes them able to recognize CD19, a protein on the surface of the cancer cells. These CD19-specific T cells may help the body's immune system identify and kill CD19 positive cancer cells. Acalabrutinib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Giving CD19 CAR T cells together with acalabrutinib may kill more cancer cells.

Detailed description

PRIMARY OBJECTIVES: I. Evaluate the safety of adding CD19CAR-CD28-CD3zeta-EGFRt-expressing Tn/mem-enriched T-lymphocytes (CD19 CAR T cells) to acalabrutinib treatment. (Safety Lead-in) II. Estimate the complete response (CR) rate within 6 months after adding CD19 CAR T cells to acalabrutinib treatment. (Phase 2) SECONDARY OBJECTIVES: I. Assess best response, time to and duration of CR. II. Estimate the 1-year progression free survival (PFS) rate and overall survival (OS). III. Describe the full toxicity profile. EXPLORATORY OBJECTIVES: I. Assess CD19-CAR T cell persistence. II. Assess CD19-CAR T cell activity as measured by CD19 B cell aplasia. III. Describe the duration of CR from completion of acalabrutinib. IV. Describe immunogenicity of CD19-CAR T cells in the presence of the BTK inhibitor. V. Characterize CD19 expression on tumor cells. VI. Describe cytokine profile after CD19-CAR T cell infusion. VII. Determine BTK and PLCG2 mutational status prior to treatment. OUTLINE: Patients receive acalabrutinib orally (PO) twice daily (BID) on days -5 to 28 of cycle 1 and on days 1-28 of subsequent cycles. Patients also receive CD19 CAR T cells intravenously (IV) on day 0. Treatment with acalabrutinib repeats every 28 days for up to 6 cycles in the absence of disease progression or unacceptable toxicity. Patients who have not attained CR after the first disease assessment and tolerated the initial CAR T cell infusion may receive a second CAR T cell infusion in cycle 2. After completion of study treatment, patients are followed up at 3, 6 and 12 months, then yearly for up to 15 years post CAR T cells infusion.

Conditions

• Recurrent Mantle Cell Lymphoma
• Refractory Mantle Cell Lymphoma

Interventions

Type	Name	Description
DRUG	Acalabrutinib	Given PO
BIOLOGICAL	CD19CAR-CD28-CD3zeta-EGFRt-expressing Tn/mem-enriched T-lymphocytes	Given IV

Timeline

• Start date: 2020-12-31
• Primary completion: 2026-09-02
• Completion: 2026-09-02
• First posted: 2020-07-23
• Last updated: 2025-11-26

Locations

1 site across 1 country: United States

Regulatory

• FDA-regulated drug study