Allogeneic CD19 CAR-T Cells for the Treatment of Relapsed/Refractory B-cell Acute Lymphoblastic Leukemia

NCT ID: NCT05164042

Last Updated: 2021-12-20

Basic Information

• Recruitment Status: UNKNOWN
• Clinical Phase: PHASE1/PHASE2
• Total Enrollment: 20 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2021-02-05
• Study Completion Date: 2024-02-29

Brief Summary

CD19 CAR-T has been widely developed in patients with R/R ALL and has also been generally recognized by the industry. In 2017, the U.S. FDA approved Novartis's CD 19 CAR-T product Kymriah for the treatment of R/R ALL. However, these CAR-T cells are constructed from patients' autologous T cells, and the production and preparation time is long; on the other hand, most patients have received multiple chemotherapy before CAR-T treatment, and the quantity and quality of T cells often cannot meet the needs of clinical treatment. It is also an important factor leading to the failure of CAR-T cell therapy, which limits the large-scale clinical application of CAR-T.

T cells derived from healthy donors are not only sufficient in quantity and quality guaranteed, but also available at any time. In December 2020, lancet reported a clinical study of 19 patients receiving allogeneic CAR-T cell ALL. 14 patients were evaluated as CR/CRi (67%) 28 days after treatment, and the median sustained remission time was 4.1 moon. Allogeneic CAR-T cells are safe and effective for the treatment of ALL, and their clinical application range is expected to improve the remission rate and survival rate of patients with R/R ALL.

Detailed Description

Chimeric antigen receptor (CAR) T cells enable T cells to recognize and kill tumor cells that express specific antigens through genetic engineering. CD19 is expressed on the membrane surface of pre-B cells and mature B cells, but not on the surface of T cells and normal granulocytes. It is an ideal therapeutic target for B cell-derived tumors. A large number of previous studies have confirmed that CD19 CAR-T cells are a safe and effective method for the treatment of ALL. In 2018, New England Journal published the long-term follow-up data of CD19 CAR-T for relapse/refractory (R/R) ALL, 53 patients with r/r ALL who received a single infusion of CD19 CAR-T The response efficiency (CR+PR) reached 98%, of which about 83% of CR patients, with a median survival time of 12.9 months; greatly improved the remission rate and survival rate of r/r ALL patients.

Nowadays,CD19 CAR-T has been widely developed in patients with R/R ALL and has also been generally recognized by the industry. In 2017, the U.S. FDA approved Novartis's CD CAR-T product Kymriah for the treatment of R/R ALL. However, these CAR-T cells are constructed from patients' autologous T cells, and the production and preparation time is long; on the other hand, most patients have received multiple chemotherapy before CAR-T treatment, and the quantity and quality of T cells often cannot meet the needs of clinical treatment. It is also an important factor leading to the failure of CAR-T cell therapy, which limits the large-scale clinical application of CAR-T.

T cells derived from healthy donors are not only sufficient in quantity and quality guaranteed, but also available at any time. In December 2020, lancet reported a clinical study of 19 patients receiving allogeneic CAR-T cell ALL. 14 patients were evaluated as CR/CRi (67%) 28 days after treatment, and the median sustained remission time was 4.1 moon. Allogeneic CAR-T cells are safe and effective for the treatment of ALL, and their clinical application range is expected to improve the remission rate and survival rate of patients with R/R ALL.

Conditions

Relapse Leukemia; Refractory Leukemia

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Treatment group

Subjects who meet the enrollment conditions will receive intravenous infusion of allogeneic CD19 CAR-T cells after pretreatment.

Group Type: EXPERIMENTAL

Allogeneic CD19 CAR-T cells

Intervention Type: BIOLOGICAL

infusion of allogeneic CD19 CAR-T cells

Interventions

Allogeneic CD19 CAR-T cells

infusion of allogeneic CD19 CAR-T cells

Intervention Type: BIOLOGICAL

Eligibility Criteria

Inclusion Criteria

1. 14-70 years old (including 14, 70 years old), no gender limit;

2. According to the 2020 World Health Organization (WHO) diagnostic criteria, it is diagnosed as relapsed/refractory B-cell acute lymphoblastic leukemia (r/r B-ALL);

3. The ECOG behavior status score is 0-2 points;

4. Expected survival time ≥ 3 months;

5. Flow cytometry confirms that the original cells express CD19;

6. Those who have failed autologous CAR-T cell preparation or autologous CAR-T cell therapy under the existing technical conditions;

7. No serious heart, lung, liver, or kidney disease;

8. Ability to understand and willing to sign the informed consent form for this trial.

Exclusion Criteria

1. Primitive cells do not express CD19;

2. Active infection;

3. Abnormal liver function (total bilirubin>1.5×ULN, ALT>2.5×ULN), abnormal renal function (serum creatinine>1.5×ULN);

4. People with unstable angina or New York Heart Association class 3/4 congestive heart failure, multiple organ dysfunction;

5. HIV/AIDS patients;

6. Those who need long-term anticoagulation (warfarin or heparin), antiplatelet (aspirin, dose>300mg/d; clopidogrel, dose>75mg/d) treatment;

7. Those who received radiotherapy within 4 weeks before the start of the study;

8. Known or suspected drug abuse or alcohol dependence;

9. People with mental illness or other conditions cannot obtain informed consent, and cannot cooperate with the requirements of completing the experimental treatment and inspection procedures;

10. Participated in other clinical trials within 30 days;

11. Pregnant or lactating women, male subjects (or their partners) or female subjects have a pregnancy plan during the study period to 6 months after the end of the test, and are unwilling to use a medically approved effective contraceptive measure during the test period (Such as intrauterine contraceptive devices or condoms);

12. Those who are judged by the investigator to be unsuitable to participate in this trial.

• Minimum Eligible Age: 14 Years
• Maximum Eligible Age: 70 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Shenzhen University General Hospital

OTHER

Sponsor Role: lead

Responsible Party

YuLi

Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Li Yu, Dr

Role: PRINCIPAL_INVESTIGATOR

Shenzhen University General Hospital

Locations

Li Yu

Shenzhen, Guangdong, China

Site Status: RECRUITING

Countries

China

Central Contacts

Li Yu

Role: CONTACT

Phone: +8675521839178

Email: liyu@vip.163.com

Facility Contacts

Li Yu

Role: primary

Other Identifiers

HEM-ONCO-007

Identifier Type: -

Identifier Source: org_study_id