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NCT01774721 · OUTCOME

Progression Free Survival (PFS) Based on Investigator Assessment

ARCHER1050: A Study of Dacomitinib vs. Gefitinib in 1st-Line Treatment Of Advanced NSCLC. · Source last updated 2023-11-14

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

Measure
MEDIAN
Unit
months
Interval / dispersion
95% Confidence Interval
Time frame
Day 28 of Cycle 1, Cycle 2 then every 8 weeks until disease progression or death due to any cause, whichever occurred first (up to 48 months)

What was measured

PFS: time from randomization to date of PD as determined by investigator assessment as per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 criteria or death due to any cause, whichever occurred first. PD for target lesions: 20% increase in sum of diameters of target measurable lesions above smallest sum observed, with minimum absolute increase of 5 mm; for non-target lesions: unequivocal progression of pre-existing lesions. Overall tumor burden increased sufficiently to merit discontinuation of therapy. In presence of stable disease (did not achieve partial response, complete response or PD) or partial response (\>=30% decrease under baseline of sum of diameters of all target measurable lesions, short diameter used in the sum for target nodes, longest diameter used in sum for all other target lesions) in target disease; for new lesions: appearance of any new unequivocal malignant lesion indicated PD.

Analysis population: ITT Population included all randomized participants, with study treatment assignment designated according to initial randomization, regardless of whether participants received study treatment or a different treatment from that to which they were randomized.

Groups in this outcome

Dacomitinib

Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.

Gefitinib

Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, 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
Dacomitinib227
Gefitinib225

Reported measurements

Source class 1
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Dacomitinib16.6Not reported12.918.4Not reported
Gefitinib11.0Not reported9.412.1Not reported

Source statistical analyses

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

  1. ci Lower Limit
    0.497
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.779
    estimate Comment
    Based on stratified Cox regression model
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    <0.0001
    param Type
    Hazard Ratio (HR)
    param Value
    0.622
    statistical Method
    1-sided stratified log-rank test
Complete source fields
analyses
  1. ci Lower Limit
    0.497
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.779
    estimate Comment
    Based on stratified Cox regression model
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    <0.0001
    param Type
    Hazard Ratio (HR)
    param Value
    0.622
    statistical Method
    1-sided stratified log-rank test
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        12.9
        upper Limit
        18.4
        value
        16.6
      2. group Id
        OG001
        lower Limit
        9.4
        upper Limit
        12.1
        value
        11.0
denoms
  1. counts
    1. group Id
      OG000
      value
      227
    2. group Id
      OG001
      value
      225
    units
    Participants
description
PFS: time from randomization to date of PD as determined by investigator assessment as per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 criteria or death due to any cause, whichever occurred first. PD for target lesions: 20% increase in sum of diameters of target measurable lesions above smallest sum observed, with minimum absolute increase of 5 mm; for non-target lesions: unequivocal progression of pre-existing lesions. Overall tumor burden increased sufficiently to merit discontinuation of therapy. In presence of stable disease (did not achieve partial response, complete response or PD) or partial response (\>=30% decrease under baseline of sum of diameters of all target measurable lesions, short diameter used in the sum for target nodes, longest diameter used in sum for all other target lesions) in target disease; for new lesions: appearance of any new unequivocal malignant lesion indicated PD.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    id
    OG000
    title
    Dacomitinib
  2. description
    Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    id
    OG001
    title
    Gefitinib
param Type
MEDIAN
population Description
ITT Population included all randomized participants, with study treatment assignment designated according to initial randomization, regardless of whether participants received study treatment or a different treatment from that to which they were randomized.
reporting Status
POSTED
time Frame
Day 28 of Cycle 1, Cycle 2 then every 8 weeks until disease progression or death due to any cause, whichever occurred first (up to 48 months)
title
Progression Free Survival (PFS) Based on Investigator Assessment
type
SECONDARY
unit Of Measure
months

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Preserved source evidence · Not medical advice