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NCT02737501 · OUTCOME

Disease Control Rate (DCR)

ALTA-1L Study: A Study of Brigatinib Versus Crizotinib in Anaplastic Lymphoma Kinase Positive (ALK+) Advanced Non-small Cell Lung Cancer (NSCLC) Participants · Source last updated 2021-08-20

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
Baseline up to end of treatment (Up to 36 months)

What was measured

Disease control as assessed by BIRC, defined as percentage of randomized participants who have achieved CR, PR, or stable disease (SD) after randomization. CR defined as disappearance of all extranodal target and non-target lesions. All pathological lymph nodes must have decreased to \<10 mm in short axis for target lesions and all lymph nodes must be non-pathological in size (\<10 mm short axis), normalization of tumor marker level for non-target lesions. PR: at least a 30% decrease in SLD of target lesions, taking as reference baseline sum diameters. SD: neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD. PD: SLD increased by at least 20% from the smallest value on study, SLD must also demonstrate an absolute increase of at least 5 mm, and unequivocal progression of existing non-target lesions.

Analysis population: ITT Population included all participants randomized to each regimen regardless of whether they tested ALK+, or whether they received study drug or adhered to the assigned dose.

Groups in this outcome

Randomized Phase: Brigatinib 90 mg QD/180 QD

Brigatinib 90 mg, tablets, orally, QD for first 7 days followed by 180 mg, orally, QD, in each 28-day cycle until PD, intolerable toxicity, consent withdrawal, or death (The median duration of exposure was 34.86 months).

Randomized Phase: Crizotinib 250 mg BID

Crizotinib 250 mg, tablets, BID in each 28-day cycle until disease progression, intolerable toxicity, consent withdrawal, or death (The median duration of exposure was 9.26 months).

Crossover Phase: Brigatinib 90 mg QD/180 mg QD

Participants who experienced PD as assessed by the BIRC or received radiotherapy to the brain while on 'Crizotinib 250 mg BID' therapy in Randomized Phase were crossed over. Following 10-day washout period, crossover participants received brigatinib 90 mg, tablets, orally, QD for first 7 days followed by 180 mg, tablets, orally, QD in each 28-day cycle up to end of the study (The median duration of exposure was 17.25 months).

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

Analysis denominator · Participants

GroupSource count
Randomized Phase: Brigatinib 90 mg QD/180 QD137
Randomized Phase: Crizotinib 250 mg BID138
Crossover Phase: Brigatinib 90 mg QD/180 mg QD65

Reported measurements

Source class 1
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Randomized Phase: Brigatinib 90 mg QD/180 QD85.4Not reported78.3690.85Not reported
Randomized Phase: Crizotinib 250 mg BID86.2Not reported79.3491.50Not reported
Crossover Phase: Brigatinib 90 mg QD/180 mg QD73.8Not reported61.4683.97Not reported

Source statistical analyses

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

  1. ci Lower Limit
    0.47
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    1.82
    estimate Comment
    Odds ratios and p-values were from a Cochran-Mantel-Haenszel test stratified by presence of iCNS metastases at Baseline, and prior chemotherapy for locally advanced or metastatic disease (current strata).
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.8220
    param Type
    Odds Ratio (OR)
    param Value
    0.93
    statistical Method
    Cochran-Mantel-Haenszel
Complete source fields
analyses
  1. ci Lower Limit
    0.47
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    1.82
    estimate Comment
    Odds ratios and p-values were from a Cochran-Mantel-Haenszel test stratified by presence of iCNS metastases at Baseline, and prior chemotherapy for locally advanced or metastatic disease (current strata).
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.8220
    param Type
    Odds Ratio (OR)
    param Value
    0.93
    statistical Method
    Cochran-Mantel-Haenszel
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        78.36
        upper Limit
        90.85
        value
        85.4
      2. group Id
        OG001
        lower Limit
        79.34
        upper Limit
        91.50
        value
        86.2
      3. group Id
        OG002
        lower Limit
        61.46
        upper Limit
        83.97
        value
        73.8
denoms
  1. counts
    1. group Id
      OG000
      value
      137
    2. group Id
      OG001
      value
      138
    3. group Id
      OG002
      value
      65
    units
    Participants
description
Disease control as assessed by BIRC, defined as percentage of randomized participants who have achieved CR, PR, or stable disease (SD) after randomization. CR defined as disappearance of all extranodal target and non-target lesions. All pathological lymph nodes must have decreased to \<10 mm in short axis for target lesions and all lymph nodes must be non-pathological in size (\<10 mm short axis), normalization of tumor marker level for non-target lesions. PR: at least a 30% decrease in SLD of target lesions, taking as reference baseline sum diameters. SD: neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD. PD: SLD increased by at least 20% from the smallest value on study, SLD must also demonstrate an absolute increase of at least 5 mm, and unequivocal progression of existing non-target lesions.
dispersion Type
95% Confidence Interval
groups
  1. description
    Brigatinib 90 mg, tablets, orally, QD for first 7 days followed by 180 mg, orally, QD, in each 28-day cycle until PD, intolerable toxicity, consent withdrawal, or death (The median duration of exposure was 34.86 months).
    id
    OG000
    title
    Randomized Phase: Brigatinib 90 mg QD/180 QD
  2. description
    Crizotinib 250 mg, tablets, BID in each 28-day cycle until disease progression, intolerable toxicity, consent withdrawal, or death (The median duration of exposure was 9.26 months).
    id
    OG001
    title
    Randomized Phase: Crizotinib 250 mg BID
  3. description
    Participants who experienced PD as assessed by the BIRC or received radiotherapy to the brain while on 'Crizotinib 250 mg BID' therapy in Randomized Phase were crossed over. Following 10-day washout period, crossover participants received brigatinib 90 mg, tablets, orally, QD for first 7 days followed by 180 mg, tablets, orally, QD in each 28-day cycle up to end of the study (The median duration of exposure was 17.25 months).
    id
    OG002
    title
    Crossover Phase: Brigatinib 90 mg QD/180 mg QD
param Type
NUMBER
population Description
ITT Population included all participants randomized to each regimen regardless of whether they tested ALK+, or whether they received study drug or adhered to the assigned dose.
reporting Status
POSTED
time Frame
Baseline up to end of treatment (Up to 36 months)
title
Disease Control Rate (DCR)
type
SECONDARY
unit Of Measure
percentage of participants

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Preserved source evidence · Not medical advice