NCT04016129

CAR-T Immunotherapy Targeting CD19- ALL

CART Immunotherapy Targeting CD19 Negative Acute Lymphoblastic Leukemia

• Status: Unknown
• Phase: Phase 1 / Phase 2
• Study type: Interventional
• Enrollment: 100 (estimated)
• Sponsor: Shenzhen Geno-Immune Medical Institute · Academic / Other
• Sex: All
• Age: 6 Months – 75 Years
• Healthy volunteers: Not accepted

Summary

This study will evaluate safety and efficacy of a combination of 4th generation chimeric antigen receptor gene-modified T cells targeting CD19 negative ALL that express CD22, CD123, CD38, CD10, CD20 and TSLPR, as many patients developed CD19-negative disease after CD19 CART immunotherapy. Clinical response and development of a standardized lentiviral vector and cell production protocol will be investigated. This is a phase I/II trial enrolling patients from multiple clinical centers.

Detailed description

Anti-CD19 chimeric antigen receptor T cell therapy has demonstrated unprecedented treatment responses in relapsing/refractory B-cell acute lymphoblastic leukemia (r/r B-ALL). However, many studies have reported that a subset of patients still relapse and about 30-50% of those relapses are characterized by the loss of CD19 surface antigen. Patients with CD19-negative relapse after CD19 CAR-T-cell therapy usually have a poor prognosis. The mechanisms underlying CD19-negative relapses are not fully understood and it is important to develop solutions to supplement post-CD19 immunotherapies. Potential markers for recurrent leukemic blasts in an emerging CD19-negative blast population include many known B-cell lineage antigens. To prevent further target escape and improve the therapeutic effects, CAR gene-modified T cells targeting CD22, CD123, CD38, CD10, CD20 or TSLPR have been considered in post CD19 CAR-T immunotherapy. This study aims to evaluate safety and efficacy of administrating one or multiple non-CD19 targeting CAR-T cells to patients with CD19-negative B cell malignancies.

Conditions

• B-cell Leukemia

Interventions

Type	Name	Description
BIOLOGICAL	4SCAR-CD22/CD123/CD38/CD10/CD20/TSLPR	4SCAR-CD22/CD123/CD38/CD10/CD20/TSLPR Patients who have relapsed after CD19 CART immunotherapy or have CD19 negative B cell malignancies

Timeline

• Start date: 2019-07-15
• Primary completion: 2021-07-15
• Completion: 2023-12-15
• First posted: 2019-07-11
• Last updated: 2019-09-19

Locations

3 sites across 1 country: China