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NCT02737501 · OUTCOME

Confirmed Intracranial ORR (iORR)

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

ORR was defined as percentage of participants who achieved CR or PR in the central nervous system (CNS) in randomized participants with intracranial CNS metastasis at baseline. CR is 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 is at least a 30% decrease in the SLD of target lesions, taking as reference the baseline sum diameters.

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. Overall number of participants analyzed are the participants with data available for analyses.

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 QD47
Randomized Phase: Crizotinib 250 mg BID49
Crossover Phase: Brigatinib 90 mg QD/180 mg QD42

Reported measurements

Source class 1
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Randomized Phase: Brigatinib 90 mg QD/180 QD66.0Not reported50.6979.14Not reported
Randomized Phase: Crizotinib 250 mg BID14.3Not reported5.9427.24Not reported
Crossover Phase: Brigatinib 90 mg QD/180 mg QD35.7Not reported21.5551.97Not reported

Source statistical analyses

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

  1. ci Lower Limit
    4.70
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    39.11
    estimate Comment
    Odds ratios and p-values were from a Cochran-Mantel-Haenszel test stratified by presence of prior chemotherapy for Locally advanced or metastatic disease at study entry (current strata).
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    <0.0001
    param Type
    Odds Ratio (OR)
    param Value
    13.56
    statistical Method
    Cochran-Mantel-Haenszel
Complete source fields
analyses
  1. ci Lower Limit
    4.70
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    39.11
    estimate Comment
    Odds ratios and p-values were from a Cochran-Mantel-Haenszel test stratified by presence of prior chemotherapy for Locally advanced or metastatic disease at study entry (current strata).
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    <0.0001
    param Type
    Odds Ratio (OR)
    param Value
    13.56
    statistical Method
    Cochran-Mantel-Haenszel
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        50.69
        upper Limit
        79.14
        value
        66.0
      2. group Id
        OG001
        lower Limit
        5.94
        upper Limit
        27.24
        value
        14.3
      3. group Id
        OG002
        lower Limit
        21.55
        upper Limit
        51.97
        value
        35.7
denoms
  1. counts
    1. group Id
      OG000
      value
      47
    2. group Id
      OG001
      value
      49
    3. group Id
      OG002
      value
      42
    units
    Participants
description
ORR was defined as percentage of participants who achieved CR or PR in the central nervous system (CNS) in randomized participants with intracranial CNS metastasis at baseline. CR is 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 is at least a 30% decrease in the SLD of target lesions, taking as reference the baseline sum diameters.
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. Overall number of participants analyzed are the participants with data available for analyses.
reporting Status
POSTED
time Frame
Baseline up to end of treatment (Up to 36 months)
title
Confirmed Intracranial ORR (iORR)
type
SECONDARY
unit Of Measure
percentage of participants

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Preserved source evidence · Not medical advice