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NCT02005471 · OUTCOME

Percentage of Participants With Minimal Residual Disease (MRD) Negativity in Peripheral Blood

A Study to Evaluate the Benefit of Venetoclax Plus Rituximab Compared With Bendamustine Plus Rituximab in Participants With Relapsed or Refractory Chronic Lymphocytic Leukemia (CLL) · Source last updated 2023-10-17

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
EoCTR visit (8 to 12 weeks after C6D1); Cycle length = 28 days

What was measured

MRD-negativity was defined as the presence of \<1 malignant B-cell per 10000 normal B-cells in a sample of at least 200000 B-cells, as assessed by the allele specific oligonucleotide polymerase chain reaction (ASO-PCR) and/or flow cytometry technique. Percentage of participants with MRD-negativity was reported. The 95% CI was computed using Pearson-Clopper method. Percentage is rounded off.

Analysis population: ITT population included all randomized participants, with participants grouped according to randomized treatment group, regardless of the actual treatment received.

Groups in this outcome

Bendamustine + Rituximab Main Study

Participants received bendamustine at a dose of 70 milligrams per meter square (mg/m\^2) via intravenous (IV) infusion on Days 1 and 2 of each 28-day cycle for 6 cycles, in combination with rituximab at a dose of 375 mg/m\^2 via IV infusion on Day 1 of Cycle 1 and at a dose of 500 mg/m\^2 on Day 1 of Cycles 2-6.

Venetoclax + Rituximab Main Study

Participants were initially placed on a venetoclax ramp-up period of 5 weeks and received an initial dose of 20 mg via tablet orally once daily (QD) for initial 1 to 7 days, then venetoclax dose was incremented weekly up to a maximum dose of 400 mg, orally, QD. Participants continued receiving venetoclax at a dose of 400 mg, orally, QD from Week 6 (Day 1 of Cycle 1 of combination therapy) onwards up to PD or 2 years, whichever occurred first, as directed by the investigator, in combination with rituximab at a dose of 375 mg/m\^2 via IV infusion on Day 1 of Cycle 1 and at a dose of 500 mg/m\^2 on Day 1 of Cycles 2-6.

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

Analysis denominator · Participants

GroupSource count
Bendamustine + Rituximab Main Study195
Venetoclax + Rituximab Main Study194

Reported measurements

Source class 1
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Bendamustine + Rituximab Main Study13.3Not reported8.9018.92Not reported
Venetoclax + Rituximab Main Study62.4Not reported55.1569.21Not reported

Source statistical analyses

Group order, estimate direction, methods and comments are retained. No treatment ranking is inferred.

  1. ci Lower Limit
    40.44
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    57.64
    estimate Comment
    The 95% CI was computed using Anderson-Hauck method.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    <.0001
    param Type
    Difference in MRD Negativity Rates
    param Value
    49.04
    statistical Method
    Chi-squared
  2. ci Lower Limit
    6.50
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    17.85
    estimate Comment
    OR was estimated using logistic regression model. The 95% CI was computed using Wald test.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    param Type
    Odds Ratio (OR)
    param Value
    10.77
Complete source fields
analyses
  1. ci Lower Limit
    40.44
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    57.64
    estimate Comment
    The 95% CI was computed using Anderson-Hauck method.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    <.0001
    param Type
    Difference in MRD Negativity Rates
    param Value
    49.04
    statistical Method
    Chi-squared
  2. ci Lower Limit
    6.50
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    17.85
    estimate Comment
    OR was estimated using logistic regression model. The 95% CI was computed using Wald test.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    param Type
    Odds Ratio (OR)
    param Value
    10.77
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        8.90
        upper Limit
        18.92
        value
        13.3
      2. group Id
        OG001
        lower Limit
        55.15
        upper Limit
        69.21
        value
        62.4
denoms
  1. counts
    1. group Id
      OG000
      value
      195
    2. group Id
      OG001
      value
      194
    units
    Participants
description
MRD-negativity was defined as the presence of \<1 malignant B-cell per 10000 normal B-cells in a sample of at least 200000 B-cells, as assessed by the allele specific oligonucleotide polymerase chain reaction (ASO-PCR) and/or flow cytometry technique. Percentage of participants with MRD-negativity was reported. The 95% CI was computed using Pearson-Clopper method. Percentage is rounded off.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received bendamustine at a dose of 70 milligrams per meter square (mg/m\^2) via intravenous (IV) infusion on Days 1 and 2 of each 28-day cycle for 6 cycles, in combination with rituximab at a dose of 375 mg/m\^2 via IV infusion on Day 1 of Cycle 1 and at a dose of 500 mg/m\^2 on Day 1 of Cycles 2-6.
    id
    OG000
    title
    Bendamustine + Rituximab Main Study
  2. description
    Participants were initially placed on a venetoclax ramp-up period of 5 weeks and received an initial dose of 20 mg via tablet orally once daily (QD) for initial 1 to 7 days, then venetoclax dose was incremented weekly up to a maximum dose of 400 mg, orally, QD. Participants continued receiving venetoclax at a dose of 400 mg, orally, QD from Week 6 (Day 1 of Cycle 1 of combination therapy) onwards up to PD or 2 years, whichever occurred first, as directed by the investigator, in combination with rituximab at a dose of 375 mg/m\^2 via IV infusion on Day 1 of Cycle 1 and at a dose of 500 mg/m\^2 on Day 1 of Cycles 2-6.
    id
    OG001
    title
    Venetoclax + Rituximab Main Study
param Type
NUMBER
population Description
ITT population included all randomized participants, with participants grouped according to randomized treatment group, regardless of the actual treatment received.
reporting Status
POSTED
time Frame
EoCTR visit (8 to 12 weeks after C6D1); Cycle length = 28 days
title
Percentage of Participants With Minimal Residual Disease (MRD) Negativity in Peripheral Blood
type
SECONDARY
unit Of Measure
percentage of participants

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