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NCT02130557 · OUTCOME

Percentage of Participants With Complete Cytogenetic Response (CCyR) Up to Month 12

A Multicenter Phase 3, Open-Label Study of Bosutinib Versus Imatinib in Adult Patients With Newly Diagnosed Chronic Phase Chronic Myelogenous Leukemia · Source last updated 2021-05-18

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
Up to Month 12

What was measured

Complete Cytogenetic Response (CCyR) was based on the prevalence of Ph+ metaphases among cells in metaphase on a bone marrow (BM) aspirate. CCyR was achieved when there was 0% Ph+ metaphases among cells in a BM sample when at least 20 metaphases from a BM sample were analyzed, or MMR if no BM was available. The percentage of participants with CCyR for up to Month 12 are reported.

Analysis population: mITT population included all randomized participants with Ph+ CML harboring the b2a2 and/or b3a2 transcript and baseline BCR-ABL copies \>0 with study drug assignment designated according to initial randomization.

Groups in this outcome

Bosutinib

Participants with Philadelphia chromosome-positive CML received bosutinib tablets at a dose of 400 mg, orally once daily in the core treatment phase of 12 months and continued the same treatment into the extension phase or followed up for safety for up to approximately 4 years, until the end of the study, treatment failure, unacceptable toxicity, death, or withdrawal of consent, whichever occurred first.

Imatinib

Participants with Philadelphia chromosome-positive CML received imatinib tablets at a dose of 400 mg, orally once daily in the core treatment phase of 12 months and continued the same treatment into the extension phase or followed up for safety for up to approximately 4 years, until the end of the study, treatment failure, unacceptable toxicity, death, or withdrawal of consent, whichever occurred first.

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

Analysis denominator · Participants

GroupSource count
Bosutinib246
Imatinib241

Reported measurements

Source class 1
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Bosutinib77.2Not reported72.082.5Not reported
Imatinib66.4Not reported60.472.4Not reported

Source statistical analyses

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

  1. ci Lower Limit
    1.160
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    2.610
    estimate Comment
    95% CI for the odds ratio adjusted for sokal risk group and region are based on Mantel-Haenszel confidence limits.
    group Description
    If the primary analysis was significant, each member of the short-term family (CCyR by Month 12, MMR by Month 18) was tested via Bonferroni's procedure at the 1-sided level of 0.0125.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.0037
    p Value Comment
    1-sided p-value based on CMH test for general association between treatment and response with stratification by sokal risk group (low, intermediate, high) and region (1-3) at time of randomization. Statistical significance threshold: 1-sided 0.0125.
    param Type
    Odds Ratio (OR)
    param Value
    1.740
    statistical Method
    Cochran-Mantel-Haenszel
Complete source fields
analyses
  1. ci Lower Limit
    1.160
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    2.610
    estimate Comment
    95% CI for the odds ratio adjusted for sokal risk group and region are based on Mantel-Haenszel confidence limits.
    group Description
    If the primary analysis was significant, each member of the short-term family (CCyR by Month 12, MMR by Month 18) was tested via Bonferroni's procedure at the 1-sided level of 0.0125.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.0037
    p Value Comment
    1-sided p-value based on CMH test for general association between treatment and response with stratification by sokal risk group (low, intermediate, high) and region (1-3) at time of randomization. Statistical significance threshold: 1-sided 0.0125.
    param Type
    Odds Ratio (OR)
    param Value
    1.740
    statistical Method
    Cochran-Mantel-Haenszel
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        72.0
        upper Limit
        82.5
        value
        77.2
      2. group Id
        OG001
        lower Limit
        60.4
        upper Limit
        72.4
        value
        66.4
denoms
  1. counts
    1. group Id
      OG000
      value
      246
    2. group Id
      OG001
      value
      241
    units
    Participants
description
Complete Cytogenetic Response (CCyR) was based on the prevalence of Ph+ metaphases among cells in metaphase on a bone marrow (BM) aspirate. CCyR was achieved when there was 0% Ph+ metaphases among cells in a BM sample when at least 20 metaphases from a BM sample were analyzed, or MMR if no BM was available. The percentage of participants with CCyR for up to Month 12 are reported.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants with Philadelphia chromosome-positive CML received bosutinib tablets at a dose of 400 mg, orally once daily in the core treatment phase of 12 months and continued the same treatment into the extension phase or followed up for safety for up to approximately 4 years, until the end of the study, treatment failure, unacceptable toxicity, death, or withdrawal of consent, whichever occurred first.
    id
    OG000
    title
    Bosutinib
  2. description
    Participants with Philadelphia chromosome-positive CML received imatinib tablets at a dose of 400 mg, orally once daily in the core treatment phase of 12 months and continued the same treatment into the extension phase or followed up for safety for up to approximately 4 years, until the end of the study, treatment failure, unacceptable toxicity, death, or withdrawal of consent, whichever occurred first.
    id
    OG001
    title
    Imatinib
param Type
NUMBER
population Description
mITT population included all randomized participants with Ph+ CML harboring the b2a2 and/or b3a2 transcript and baseline BCR-ABL copies \>0 with study drug assignment designated according to initial randomization.
reporting Status
POSTED
time Frame
Up to Month 12
title
Percentage of Participants With Complete Cytogenetic Response (CCyR) Up to Month 12
type
SECONDARY
unit Of Measure
percentage of participants

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Preserved source evidence · Not medical advice