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NCT05537766 · OUTCOME

All Substudies (Substudies A, B, C and D): Time to Best Objective Response

Study of Brexucabtagene Autoleucel in Adults With Rare B-cell Malignancies · Source last updated 2026-03-10

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

Measure
MEAN
Unit
days
Interval / dispersion
Standard Deviation
Time frame
Up to 2 years

What was measured

Time to best objective response was defined as time from the date of brexucabtagene autoleucel infusion to the date of best response per the Sixth International Workshop in WM for r/rWM, per the Lugano Classification for r/rRT and r/r BL, and per Grever and colleagues for r/rHCL. Objective response (OR) is defined in OM#25 (Substudy B), 28 (Substudy C), and 29 (Substudy D).

Analysis population: Participants in substudies B, C and D, in the Modified Intent-to-Treat Analysis Set with objective response were analyzed. Substudy A was withdrawn, therefore no participants were enrolled in it. Hence, data is not available.

Groups in this outcome

Substudy A (Relapsed/Refractory Waldenstrom Macroglobulinemia): Brexucabtagene Autoleucel

This substudy was withdrawn; therefore, no participants were enrolled.

Substudy B (Relapsed/Refractory Richter Transformation): Brexucabtagene Autoleucel

Participants with Relapsed/Refractory Richter Transformation received the following treatment during the study: Lymphodepletion chemotherapy regimen of fludarabine 30 mg/m\^2/day IV and cyclophosphamide 500 mg/m\^2/day IV for 3 days (Day -5 to Day -3). A single IV infusion of brexucabtagene autoleucel at target dose of 2 × 10\^6 anti-CD19 CAR T cells/kg on Day 0.

Substudy C (Relapsed/Refractory Burkitt Lymphoma): Brexucabtagene Autoleucel

Participants with Relapsed/Refractory Burkitt Lymphoma received the following treatment during the study: Lymphodepletion chemotherapy regimen of fludarabine 30 mg/m\^2/day IV and cyclophosphamide 500 mg/m\^2/day IV for 3 days (Day -5 to Day -3). A single IV infusion of brexucabtagene autoleucel at target dose of 2 × 10\^6 anti-CD19 CAR T cells/kg on Day 0.

Substudy D (Relapsed/Refractory Hairy Cell Leukemia): Brexucabtagene Autoleucel

Participants with Relapsed/Refractory hairy cell leukemia received the following treatment during the study: Lymphodepletion chemotherapy regimen of fludarabine 30 mg/m\^2/day IV and cyclophosphamide 500 mg/m\^2/day IV for 3 days (Day -5 to Day -3). A single IV infusion of brexucabtagene autoleucel at target dose of 2 × 10\^6 anti-CD19 CAR T cells/kg on Day 0.

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

Analysis denominator · Participants

GroupSource count
Substudy A (Relapsed/Refractory Waldenstrom Macroglobulinemia): Brexucabtagene Autoleucel0
Substudy B (Relapsed/Refractory Richter Transformation): Brexucabtagene Autoleucel2
Substudy C (Relapsed/Refractory Burkitt Lymphoma): Brexucabtagene Autoleucel10
Substudy D (Relapsed/Refractory Hairy Cell Leukemia): Brexucabtagene Autoleucel1

Reported measurements

Source class 1
Values in days · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
Substudy B (Relapsed/Refractory Richter Transformation): Brexucabtagene Autoleucel387.07Not reportedNot reportedNot reported
Substudy C (Relapsed/Refractory Burkitt Lymphoma): Brexucabtagene Autoleucel55.380.48Not reportedNot reportedNot reported
Substudy D (Relapsed/Refractory Hairy Cell Leukemia): Brexucabtagene Autoleucel27.0NANot reportedNot reportedStandard deviation cannot be estimated for one participant.
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG001
        spread
        7.07
        value
        38
      2. group Id
        OG002
        spread
        80.48
        value
        55.3
      3. comment
        Standard deviation cannot be estimated for one participant.
        group Id
        OG003
        spread
        NA
        value
        27.0
denoms
  1. counts
    1. group Id
      OG000
      value
      0
    2. group Id
      OG001
      value
      2
    3. group Id
      OG002
      value
      10
    4. group Id
      OG003
      value
      1
    units
    Participants
description
Time to best objective response was defined as time from the date of brexucabtagene autoleucel infusion to the date of best response per the Sixth International Workshop in WM for r/rWM, per the Lugano Classification for r/rRT and r/r BL, and per Grever and colleagues for r/rHCL. Objective response (OR) is defined in OM#25 (Substudy B), 28 (Substudy C), and 29 (Substudy D).
dispersion Type
Standard Deviation
groups
  1. description
    This substudy was withdrawn; therefore, no participants were enrolled.
    id
    OG000
    title
    Substudy A (Relapsed/Refractory Waldenstrom Macroglobulinemia): Brexucabtagene Autoleucel
  2. description
    Participants with Relapsed/Refractory Richter Transformation received the following treatment during the study: Lymphodepletion chemotherapy regimen of fludarabine 30 mg/m\^2/day IV and cyclophosphamide 500 mg/m\^2/day IV for 3 days (Day -5 to Day -3). A single IV infusion of brexucabtagene autoleucel at target dose of 2 × 10\^6 anti-CD19 CAR T cells/kg on Day 0.
    id
    OG001
    title
    Substudy B (Relapsed/Refractory Richter Transformation): Brexucabtagene Autoleucel
  3. description
    Participants with Relapsed/Refractory Burkitt Lymphoma received the following treatment during the study: Lymphodepletion chemotherapy regimen of fludarabine 30 mg/m\^2/day IV and cyclophosphamide 500 mg/m\^2/day IV for 3 days (Day -5 to Day -3). A single IV infusion of brexucabtagene autoleucel at target dose of 2 × 10\^6 anti-CD19 CAR T cells/kg on Day 0.
    id
    OG002
    title
    Substudy C (Relapsed/Refractory Burkitt Lymphoma): Brexucabtagene Autoleucel
  4. description
    Participants with Relapsed/Refractory hairy cell leukemia received the following treatment during the study: Lymphodepletion chemotherapy regimen of fludarabine 30 mg/m\^2/day IV and cyclophosphamide 500 mg/m\^2/day IV for 3 days (Day -5 to Day -3). A single IV infusion of brexucabtagene autoleucel at target dose of 2 × 10\^6 anti-CD19 CAR T cells/kg on Day 0.
    id
    OG003
    title
    Substudy D (Relapsed/Refractory Hairy Cell Leukemia): Brexucabtagene Autoleucel
param Type
MEAN
population Description
Participants in substudies B, C and D, in the Modified Intent-to-Treat Analysis Set with objective response were analyzed. Substudy A was withdrawn, therefore no participants were enrolled in it. Hence, data is not available.
reporting Status
POSTED
time Frame
Up to 2 years
title
All Substudies (Substudies A, B, C and D): Time to Best Objective Response
type
SECONDARY
unit Of Measure
days

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Preserved source evidence · Not medical advice