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

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• 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.

• 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