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KTE-X19

Phase 2

Relapsed/Refractory Mantle Cell Lymphoma | Small molecule | Oncology |Gilead Sciences, Inc.|Last Updated: Dec 16, 2025

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
CONTROLLEDBiomarker
Total Trials1
Total Enrollment25
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06253663Study of KTE-X19 in Adult Japanese Participants With Relapsed/Refractory Mantle Cell Lymphoma or Relapsed/Refractory B-precursor Acute Lymphoblastic LeukemiaPHASE2 ACTIVE NOT_RECRUITING 25Mar 18, 2024Jul 1, 2027Dec 16, 20259 Japan
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Study Endpoints
Primary Endpoints
MCL Cohort: Objective Response Rate (ORR) Per Investigator Assessment
Up to 24 months

ORR is defined as the incidence of a complete remission (CR) or a partial remission (PR) per the Lugano Classification.

ALL Cohort: Overall Complete Remission (OCR) Rate
Up to 24 months

OCR rate is defined as the percentage of participants achieving CR/complete remission with incomplete hematologic recovery (CRi) per investigator assessment.

Secondary Endpoints
MCL Cohort: Duration of Response (DOR)
Up to 24 months
MCL Cohort: Best Objective Response (BOR)
Up to 24 months
MCL Cohort: Progression-Free Survival (PFS)
Up to 24 months
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
MCL Cohort- KTE-X19EXPERIMENTALParticipants will receive cyclophosphamide 500 mg/m\^2/day intravenously (IV) and fludarabine 30 mg/m\^2/day IV lymphodepletion chemotherapy for 3 days followed by KTE-X19 administered intravenously at a target dose of 2 x 10\^6 anti-cluster of differentiation (CD)19 chimeric antigen receptor (CAR) T cells/kg on Day 0. For participants weighing ≥ 100 kg, a maximum flat dose of 2 x 10\^8 anti-CD19 CAR T cells will be administered.
ALL Cohort- KTE-X19EXPERIMENTALParticipants will receive cyclophosphamide 900 mg/m\^2/day intravenously (IV) for 1 day and fludarabine 25 mg/m\^2/day IV lymphodepletion chemotherapy for 3 days followed by KTE-X19 administered intravenously at a target dose of 1 x 10\^6 19 CAR T cells/kg on Day 0. For participants weighing ≥ 100 kg, a maximum flat dose of 1 x 10\^8 anti-CD19 CAR T cells will be administered.
Interventions
NameTypeDescription
KTE-X19DRUGA single infusion of chimeric antigen receptor (CAR) T cells
CyclophosphamideDRUGAdministered intravenously
FludarabineDRUGAdministered intravenously
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites9

Key Inclusion Criteria: MCL Cohort: * Pathologically confirmed MCL, with documentation of either overexpression of cyclin D1 or presence of t(11;14) * Up to 5 prior regimens for MCL. Prior therapy must have included: * Anthracycline-, bendamustine-, or high-dose cytarabine- containing chemother...

Countries:Japan
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT06253663primaryCompletionDate: changed
LOWMay 24, 2026NCT06253663studyFirstPostDate: changed