Phase I Clinical Study on the Safety and Efficacy of CY-219 CAR-T Cell Injection in the Treatment of Relapsed/Refractory B-Cell Lymphoma

NCT07539688 | Not Yet Recruiting Phase 1

• 1 other identifier: IIT2025149
• Study Type: interventional
• Target: 18
• Locations: 0 countries
• Sites: N/A

Brief Summary

This study is an open-label, single-arm, prospective clinical trial involving patients with relapsed/refractory B-cell lymphoma, aimed at evaluating the safety and efficacy of CAR-T cell infusion.

Conditions

Relapsed/Refractory B-cell Lymphoma; Diffuse Large B-cell Lymphoma; Inert B-cell Lymphoma Transformed Into Large B-cell Lymphoma (Excluding Richter Transformation, THRLBCL, and BL)

Outcome Measures

Primary Outcomes (1)

• Safety indicators

  Six months after CAR-T infusion, analyze the recorded possible adverse reactions, mainly including the number of cases, incidence, and severity of immune-related toxicities such as cytokine release syndrome, immune effector cell-associated neurotoxicity, hematologic toxicity, and organ toxicity. The incidence of DLT.

  6 months after CAR-T infusion

Secondary Outcomes (7)

• Efficacy indicators

  Three months after treatment

• Efficacy indicators

  Three months after treatment

• Efficacy indicators

  Three months after treatment

• Efficacy indicators

  Three months after treatment

• Cellular Metabolic Kinetics Indicators

  On the fourth, seventh, tenth, fourteenth, twenty-first, and twenty-eighth days after retransfusion

Other Outcomes (1)

• CAR-T single-cell phenotype and clonal characteristics

  Test the product on the day of infusion. Follow-up will be conducted on day 10 and day 28 after infusion. From the 2nd month to the 3rd month, follow-up will be conducted once a month; from the 6th month to the 1st year, follow-up will be conducted once

Study Arms (1)

CY-219 CAR-T

OTHER

Drug: CY-219 CAR-T

Interventions

CY-219 CAR-T DRUG

Eligible participants should receive preconditioning 5 to 3 days before CAR-T cell infusion. The recommended preconditioning regimen is fludarabine (30 mg/m²/day, for 3 consecutive days) and cyclophosphamide (300 mg/m²/day, for 3 consecutive days) (Flu/Cy). Thirty minutes before infusion, prophylactic medication for allergic reactions should be administered: 25 mg of promethazine hydrochloride or 12.5 mg of diphenhydramine, either intramuscularly or orally. A '3+3' dose-escalation study design will be used, aiming to recruit 9-18 subjects with relapsed/refractory B-cell lymphoma.

CY-219 CAR-T

Eligibility Criteria

• Age: 18 Years - 75 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• \. The participant has given consent and signed the informed consent form, and is willing and able to comply with the planned visits, research treatments, laboratory tests, and other trial procedures;
• \. Clinically diagnosed as a patient with relapsed/refractory B-cell lymphoma, and confirmed by pathological and histological examination as CD19 and/or CD22 B-cell lymphoma, including: diffuse large B-cell lymphoma, or transformed large B-cell lymphoma from indolent B-cell lymphoma (excluding Richter transformation, THRLBCL, BL). And meets the following criteria (meets any one of the first three items and the fourth): i. Recurrence ≥6 months after achieving remission with first-line full treatment, or ≥12 months after achieving remission following stem cell transplantation; ii. Progression during first-line treatment combined with high-risk factors (double-expressor lymphoma, double-hit lymphoma, TP53 gene mutation or deletion, IPI score ≥3); iii. Disease relapse after ≥2 lines of treatment or failure to achieve remission; iv. The participant has received the following treatment regimens after being diagnosed with LBCL:
• Anti-CD20 monoclonal antibody;
• Combination chemotherapy containing anthracyclines.
• \. Age 18 or older, both men and women are eligible;
• \. Study participants with an Eastern Cooperative Oncology Group (ECOG) performance status of 0-2;
• \. Expected survival of more than 3 months from the date of signing the informed consent;
• \. HGB ≥ 60 g/L (transfusion allowed); LYM ≥ 0.3×10\^9/L;
• \. Liver and kidney function and cardiopulmonary function must meet the following requirements:
• Creatinine ≤ 1.5 × ULN;
• Left ventricular ejection fraction ≥ 50%;
• Blood oxygen saturation \> 90%;
• Total bilirubin ≤ 1.5 × ULN; ALT and AST ≤ 2.5 × ULN;
• \. Participants intending to become pregnant must agree to use contraception before enrollment in the study and for one year after CAR-T cell infusion; if a participant becomes pregnant or suspects pregnancy, they should immediately inform the investigator.

You may not qualify if:

• \. Severe heart failure or left ventricular ejection fraction \<50%;
• \. History of severe pulmonary function impairment;
• \. Concurrent other malignant tumors in the progressive stage;
• \. Concurrent severe infection that cannot be effectively controlled;
• \. Concurrent severe autoimmune disease or congenital immunodeficiency;
• \. History of CAR-T cell immunotherapy;
• \. Active hepatitis (hepatitis B virus deoxyribonucleic acid \[HBV-DNA\] or hepatitis C virus ribonucleic acid \[HCV-RNA\] test results above the detection limit);
• \. Human immunodeficiency virus (HIV) infection or known acquired immunodeficiency syndrome (AIDS), or syphilis infection.
• \. A history of severe allergic reactions to biological products (including antibiotics);
• \. Allogeneic hematopoietic stem cell transplant patients who still have acute graft-versus-host disease (GvHD) one month after stopping immunosuppressive agents;
• \. Women who are pregnant, breastfeeding, or planning to become pregnant within 12 months;
• \. Patients with other serious physical or mental illnesses or abnormal laboratory test results that may increase the risk of participating in the study, or interfere with study results, or who are deemed by the investigators to be unsuitable for participation in this study.

Sponsors & Collaborators

• Institute of Hematology & Blood Diseases Hospital, China: lead

MeSH Terms

Conditions

Lymphoma, B-Cell; Lymphoma, Large B-Cell, Diffuse

Condition Hierarchy (Ancestors)

Lymphoma, Non-Hodgkin; Lymphoma; Neoplasms by Histologic Type; Neoplasms; Lymphoproliferative Disorders; Lymphatic Diseases; Hemic and Lymphatic Diseases; Immunoproliferative Disorders; Immune System Diseases

Central Study Contacts

Liang Huang

CONTACT

02223608359; huangliang@ihcams.ac.cn

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: NA
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: February 26, 2026
• First Posted: April 20, 2026
• Study Start: May 1, 2026
• Primary Completion (Estimated): March 1, 2029
• Study Completion (Estimated): December 1, 2029
• Last Updated: April 20, 2026

Record last verified: 2026-04