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NCT04487080 · OUTCOME

Progression-Free Survival (PFS) According to Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1 as Assessed by Blinded Independent Central Review (BICR)

A Study of Amivantamab and Lazertinib Combination Therapy Versus Osimertinib in Locally Advanced or Metastatic Non-Small Cell Lung Cancer · Source last updated 2026-08-28

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
From randomization to either disease progression or death whichever occurs first (up to 32.8 months)

What was measured

PFS was defined as the time from randomization until the date of objective disease progression based on BICR using RECIST version 1.1 or death (by any cause) the absence of progression, whichever came first. Disease progression was defined using RECIST 1.1 as a 20 percent (%) increase in the sum of diameters of target measurable lesions above the smallest sum observed, with a minimum absolute increase of 5 millimeters (mL). Participants who have not progressed or have not died at the time of analysis were censored at the time of the latest date of their last evaluable RECIST version 1.1 assessment.

Analysis population: Full analysis set (FAS) included all randomized participants, classified according to their assigned treatment arm regardless of the actual treatment received.

Groups in this outcome

Experimental: Arm A (Open-label): Amivantamab + Lazertinib

Participants received combination therapy of amivantamab 1050 milligrams (mg) for body weight (BW) less than (\<) 80 kilograms (kg) or 1400 mg for BW greater than or equal to (\>=) 80 kg intravenous (IV) infusion once weekly in 28-day treatment cycles: at Cycle 1 Days 1/2 (split dose, Day 1: 350 mg regardless of BW; Day 2: 700 mg or 1050 mg \[if BW \>=80 kg\]), 8, 15, and 22 and then once every 2 weeks (at Day 1 and 15) from Cycle 2 onwards; and lazertinib 240 mg (3 tablets of 80 mg) orally once daily. Participants continued treatment until disease progression, participant consent withdrawal, adverse event, investigator's decision, or initiation of new systemic anti-cancer treatment.

Active Comparator: Arm B (Double-blind): Osimertinib+Placebo Matching Lazertinib

Participants received osimertinib 80 mg capsule orally once daily along with 3 tablets of matching placebo of lazertinib 240 mg tablets orally once daily from Cycle 1 Day 1 until disease progression, participant consent withdrawal, adverse event, investigator's decision, or initiation of new systemic anti-cancer treatment.

Experimental: Arm C (Double-blind): Lazertinib+Placebo Matching Osimertinib

Participants received lazertinib 240 mg (3 tablets of 80 mg) orally once daily along with single capsule of matching placebo of osimertinib 80 mg orally once daily from Cycle 1 Day 1 until disease progression, participant consent withdrawal, adverse event, investigator's decision, or initiation of new systemic anti-cancer treatment.

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

Analysis denominator · Participants

GroupSource count
Experimental: Arm A (Open-label): Amivantamab + Lazertinib429
Active Comparator: Arm B (Double-blind): Osimertinib+Placebo Matching Lazertinib429
Experimental: Arm C (Double-blind): Lazertinib+Placebo Matching Osimertinib216

Reported measurements

Source class 1
Values in Months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Experimental: Arm A (Open-label): Amivantamab + Lazertinib23.72Not reported19.1227.66Not reported
Active Comparator: Arm B (Double-blind): Osimertinib+Placebo Matching Lazertinib16.59Not reported14.7818.46Not reported
Experimental: Arm C (Double-blind): Lazertinib+Placebo Matching Osimertinib18.46Not reported14.7520.11Not reported

Source statistical analyses

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

  1. ci Lower Limit
    0.58
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.85
    estimate Comment
    HR and its 95% CI was estimated based on a stratified Cox's regression model with treatment as the sole explanatory variable.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.0002
    param Type
    Hazard Ratio (HR)
    param Value
    0.70
    statistical Method
    Log Rank
Complete source fields
analyses
  1. ci Lower Limit
    0.58
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.85
    estimate Comment
    HR and its 95% CI was estimated based on a stratified Cox's regression model with treatment as the sole explanatory variable.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.0002
    param Type
    Hazard Ratio (HR)
    param Value
    0.70
    statistical Method
    Log Rank
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        19.12
        upper Limit
        27.66
        value
        23.72
      2. group Id
        OG001
        lower Limit
        14.78
        upper Limit
        18.46
        value
        16.59
      3. group Id
        OG002
        lower Limit
        14.75
        upper Limit
        20.11
        value
        18.46
denoms
  1. counts
    1. group Id
      OG000
      value
      429
    2. group Id
      OG001
      value
      429
    3. group Id
      OG002
      value
      216
    units
    Participants
description
PFS was defined as the time from randomization until the date of objective disease progression based on BICR using RECIST version 1.1 or death (by any cause) the absence of progression, whichever came first. Disease progression was defined using RECIST 1.1 as a 20 percent (%) increase in the sum of diameters of target measurable lesions above the smallest sum observed, with a minimum absolute increase of 5 millimeters (mL). Participants who have not progressed or have not died at the time of analysis were censored at the time of the latest date of their last evaluable RECIST version 1.1 assessment.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received combination therapy of amivantamab 1050 milligrams (mg) for body weight (BW) less than (\<) 80 kilograms (kg) or 1400 mg for BW greater than or equal to (\>=) 80 kg intravenous (IV) infusion once weekly in 28-day treatment cycles: at Cycle 1 Days 1/2 (split dose, Day 1: 350 mg regardless of BW; Day 2: 700 mg or 1050 mg \[if BW \>=80 kg\]), 8, 15, and 22 and then once every 2 weeks (at Day 1 and 15) from Cycle 2 onwards; and lazertinib 240 mg (3 tablets of 80 mg) orally once daily. Participants continued treatment until disease progression, participant consent withdrawal, adverse event, investigator's decision, or initiation of new systemic anti-cancer treatment.
    id
    OG000
    title
    Experimental: Arm A (Open-label): Amivantamab + Lazertinib
  2. description
    Participants received osimertinib 80 mg capsule orally once daily along with 3 tablets of matching placebo of lazertinib 240 mg tablets orally once daily from Cycle 1 Day 1 until disease progression, participant consent withdrawal, adverse event, investigator's decision, or initiation of new systemic anti-cancer treatment.
    id
    OG001
    title
    Active Comparator: Arm B (Double-blind): Osimertinib+Placebo Matching Lazertinib
  3. description
    Participants received lazertinib 240 mg (3 tablets of 80 mg) orally once daily along with single capsule of matching placebo of osimertinib 80 mg orally once daily from Cycle 1 Day 1 until disease progression, participant consent withdrawal, adverse event, investigator's decision, or initiation of new systemic anti-cancer treatment.
    id
    OG002
    title
    Experimental: Arm C (Double-blind): Lazertinib+Placebo Matching Osimertinib
param Type
MEDIAN
population Description
Full analysis set (FAS) included all randomized participants, classified according to their assigned treatment arm regardless of the actual treatment received.
reporting Status
POSTED
time Frame
From randomization to either disease progression or death whichever occurs first (up to 32.8 months)
title
Progression-Free Survival (PFS) According to Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1 as Assessed by Blinded Independent Central Review (BICR)
type
PRIMARY
unit Of Measure
Months

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