Study of Brexucabtagene Autoleucel (KTE-X19) in Participants With Relapsed/Refractory Mantle Cell Lymphoma (Cohort 3)

A Phase 2 Multicenter Study Evaluating the Efficacy of KTE-X19 in Subjects With Relapsed/Refractory Mantle Cell Lymphoma (ZUMA-2)

The goal of this clinical study is to test how well the study drug, brexucabtagene autoleucel (KTE-X19), works in participants with relapsed/refractory (r/r) mantle cell lymphoma (MCL) who have not previously received Bruton's tyrosine kinase inhibitor (BTKi).

Study KTE-C19-102 (NCT02601313) enrolled participants with r/r MCL who had been treated with up to 5 prior regimens, including a BTKi, in Cohorts 1 and 2. To fulfill an FDA postmarketing requirement, Cohort 3 is added to the study. Cohort 3 includes participants with r/r MCL who have been treated with up to five prior regimens but have not received prior therapy with a BTKi.

The final analysis for Cohorts 1 and 2 has been completed. Data for Cohort 3 are analyzed separately. Therefore, this separate registration is only for Cohort 3.

After the end of KTE-C19-102, subjects who received an infusion of anti-CD19 CAR T cells will complete the remainder of the 15-year follow-up assessments in a separate long-term follow-up study, KT-US-982-5968 (NCT05041309).

Key Inclusion Criteria:

• Up to 5 prior regimens for mantle cell lymphoma (MCL). Prior therapy must have included anthracycline- or bendamustine-containing chemotherapy and anti-cluster of differentiation 20 (CD20) monoclonal antibody therapy. Individuals must not have received prior therapy with a Bruton's tyrosine kinase inhibitor (BTKi).
• At least 1 measurable lesion
• Platelet count ≥ 75,000/μL
• Creatinine clearance (as estimated by Cockcroft Gault) ≥ to 60 cc/min
• Cardiac ejection fraction ≥ 50%, no evidence of pericardial effusion as determined by an echocardiogram (ECHO) or multigated acquisition (MUGA), and no clinically significant electrocardiogram (ECG) findings
• Baseline oxygen saturation > 92% on room air

Key Exclusion Criteria:

• Known history of infection with human immunodeficiency virus (HIV) or hepatitis B (HBsAG positive) or anti-hepatitis C virus (HCV) positive. Individuals with a history of hepatitis infection must have cleared their infection as determined by standard serological and genetic testing
• History of a seizure disorder, cerebrovascular ischemia/hemorrhage, dementia, cerebellar disease, cerebral edema, posterior reversible encephalopathy syndrome, or any autoimmune disease with central nervous system (CNS) involvement
• Presence of fungal, bacterial, viral, or other infection that is uncontrolled or requiring IV antimicrobials for management

Note: Other protocol defined Inclusion/Exclusion criteria may apply.