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NCT02614066 · OUTCOME

Phase 2: Complete Remission (CR) Rate Per Independent Review

A Study Evaluating the Safety and Efficacy of Brexucabtagene Autoleucel (KTE-X19) in Adult Subjects With Relapsed/Refractory B-precursor Acute Lymphoblastic Leukemia (ZUMA-3) · Source last updated 2024-11-19

Results reported by the registry submitting party. Population, time horizon, units and missing values must be read together.

Measure
NUMBER
Unit
percentage of participants
Interval / dispersion
95% Confidence Interval
Time frame
First infusion date of brexucabtagene autoleucel (Phase 2) up to 3.7 years

What was measured

CR: ≤ 5% blasts by morphology in BM; ANC ≥ 1000/µL and Plt ≥ 100000/µL in PB; CNS EMD of CNS-1 (no detectable leukemia in CSF); Non-CNS EMD: if baseline EMD present (images must show CR), if no baseline EMD (then images not required), but if performed should show negative PET baseline, baseline lesions must show CR as disappearance of measurable and nonmeasurable nodal lesions (Nodal masses \> 1.5 cm in GTD at baseline must have regressed to ≤ l.5 cm GTD, nodes that were 1.1 to 1.5 cm \[long axis\] and \> 1.0 cm \[short axis\] must have decreased to 1.0 cm in their short axis, spleen and/or liver must be normal size) and no new lesions. Percentage of participants with CR was reported. 95% CI was calculated by Clopper-Pearson method.

Analysis population: Participants in mITT Analysis Set were analyzed.

Groups in this outcome

Phase 2: 1 x 10^6 Anti-CD19 CAR T Cells/kg

Participants with r/r B-ALL received conditioning chemotherapy (fludarabine 25 mg/m\^2 IV over 30 minutes on Day -4, Day -3, and Day -2 and cyclophosphamide 900 mg/m\^2 IV over 60 minutes on Day -2) followed by a single infusion of brexucabtagene autoleucel CAR transduced autologous T cells administered IV at a target dose of 1 x 10\^6 anti-CD19 CAR T cells/kg of body weight on Day 0. For participants weighing \> 100 kg, a maximum flat dose of 1 x 10\^8 anti-CD19 CAR T cells/kg of body weight was administered.

Group identifiers and denominators belong to this outcome only. They may differ in another outcome or in safety reporting.

Analysis denominator · Participants

GroupSource count
Phase 2: 1 x 10^6 Anti-CD19 CAR T Cells/kg55

Reported measurements

Source class 1
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Phase 2: 1 x 10^6 Anti-CD19 CAR T Cells/kg56.4Not reported4270Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        42
        upper Limit
        70
        value
        56.4
denoms
  1. counts
    1. group Id
      OG000
      value
      55
    units
    Participants
description
CR: ≤ 5% blasts by morphology in BM; ANC ≥ 1000/µL and Plt ≥ 100000/µL in PB; CNS EMD of CNS-1 (no detectable leukemia in CSF); Non-CNS EMD: if baseline EMD present (images must show CR), if no baseline EMD (then images not required), but if performed should show negative PET baseline, baseline lesions must show CR as disappearance of measurable and nonmeasurable nodal lesions (Nodal masses \> 1.5 cm in GTD at baseline must have regressed to ≤ l.5 cm GTD, nodes that were 1.1 to 1.5 cm \[long axis\] and \> 1.0 cm \[short axis\] must have decreased to 1.0 cm in their short axis, spleen and/or liver must be normal size) and no new lesions. Percentage of participants with CR was reported. 95% CI was calculated by Clopper-Pearson method.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants with r/r B-ALL received conditioning chemotherapy (fludarabine 25 mg/m\^2 IV over 30 minutes on Day -4, Day -3, and Day -2 and cyclophosphamide 900 mg/m\^2 IV over 60 minutes on Day -2) followed by a single infusion of brexucabtagene autoleucel CAR transduced autologous T cells administered IV at a target dose of 1 x 10\^6 anti-CD19 CAR T cells/kg of body weight on Day 0. For participants weighing \> 100 kg, a maximum flat dose of 1 x 10\^8 anti-CD19 CAR T cells/kg of body weight was administered.
    id
    OG000
    title
    Phase 2: 1 x 10^6 Anti-CD19 CAR T Cells/kg
param Type
NUMBER
population Description
Participants in mITT Analysis Set were analyzed.
reporting Status
POSTED
time Frame
First infusion date of brexucabtagene autoleucel (Phase 2) up to 3.7 years
title
Phase 2: Complete Remission (CR) Rate Per Independent Review
type
SECONDARY
unit Of Measure
percentage of participants

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Preserved source evidence · Not medical advice