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NCT01808573 · OUTCOME

Centrally Assessed Progression Free Survival

A Study of Neratinib Plus Capecitabine Versus Lapatinib Plus Capecitabine in Patients With HER2+ Metastatic Breast Cancer Who Have Received Two or More Prior HER2 Directed Regimens in the Metastatic Setting · Source last updated 2021-06-11

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

Measure
MEAN
Unit
months
Interval / dispersion
95% Confidence Interval
Time frame
From randomization date to recurrence, progression or death, assessed up to 38 months. The result is based on primary analysis data cut.

What was measured

Progression Free Survival (PFS), Measured in Months, for Randomized Subjects of the Central Assessment. The time interval from the date of randomization until the first date on which recurrence, progression (per Response Evaluation Criteria in Solid Tumors Criteria (RECIST) v1.1), or death due to any cause, is documented. For subjects without recurrence, progression or death, it is censored at the last valid tumor assessment. Progression is defined using Response Evaluation Criteria in Solid Tumors Criteria (RECIST v1.1), as a 20% increase in the sum of the longest diameter of target lesions, or a measurable increase in a non-target lesion, or the appearance of new lesions. Here, the time to event was reported as the restricted mean survival time. The restricted mean survival time was defined as the area under the curve of the survival function up to 24 months.

Analysis population: Randomized ITT Population

Groups in this outcome

Neratinib Plus Capecitabine

neratinib 240 mg orally, once daily with food, continuously in 21 day cycles, and capecitabine 1500 mg/m\^2 daily in 2 evenly divided doses, orally with water within 30 minutes after a meal, taken on days 1 to 14 of each 21 day cycle.

Lapatinib Plus Capecitabine

lapatinib 1250 mg orally, once daily, continuously in 21 day cycles, and capecitabine 2000 mg/m\^2 daily in 2 evenly divided doses, orally with water within 30 minutes after a meal, taken on days 1 to 14 of each 21 day cycle.

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

Analysis denominator · Participants

GroupSource count
Neratinib Plus Capecitabine307
Lapatinib Plus Capecitabine314

Reported measurements

Source class 1
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Neratinib Plus Capecitabine8.8Not reported7.89.8Not reported
Lapatinib Plus Capecitabine6.6Not reported5.97.4Not reported

Source statistical analyses

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

  1. ci Lower Limit
    0.626
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.926
    estimate Comment
    Lapatinib Plus Capecitabine is the reference. Stratified by hormone receptor status, number of prior HER2-directed regimens in the metastatic setting, and visceral disease vs. non-visceral.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.0059
    param Type
    Hazard Ratio (HR)
    param Value
    0.762
    statistical Comment
    Stratified by hormone receptor status, number of prior HER2-directed regimens in the metastatic setting, and visceral disease vs. non-visceral.
    statistical Method
    Log Rank
Complete source fields
analyses
  1. ci Lower Limit
    0.626
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.926
    estimate Comment
    Lapatinib Plus Capecitabine is the reference. Stratified by hormone receptor status, number of prior HER2-directed regimens in the metastatic setting, and visceral disease vs. non-visceral.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.0059
    param Type
    Hazard Ratio (HR)
    param Value
    0.762
    statistical Comment
    Stratified by hormone receptor status, number of prior HER2-directed regimens in the metastatic setting, and visceral disease vs. non-visceral.
    statistical Method
    Log Rank
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        7.8
        upper Limit
        9.8
        value
        8.8
      2. group Id
        OG001
        lower Limit
        5.9
        upper Limit
        7.4
        value
        6.6
denoms
  1. counts
    1. group Id
      OG000
      value
      307
    2. group Id
      OG001
      value
      314
    units
    Participants
description
Progression Free Survival (PFS), Measured in Months, for Randomized Subjects of the Central Assessment. The time interval from the date of randomization until the first date on which recurrence, progression (per Response Evaluation Criteria in Solid Tumors Criteria (RECIST) v1.1), or death due to any cause, is documented. For subjects without recurrence, progression or death, it is censored at the last valid tumor assessment. Progression is defined using Response Evaluation Criteria in Solid Tumors Criteria (RECIST v1.1), as a 20% increase in the sum of the longest diameter of target lesions, or a measurable increase in a non-target lesion, or the appearance of new lesions. Here, the time to event was reported as the restricted mean survival time. The restricted mean survival time was defined as the area under the curve of the survival function up to 24 months.
dispersion Type
95% Confidence Interval
groups
  1. description
    neratinib 240 mg orally, once daily with food, continuously in 21 day cycles, and capecitabine 1500 mg/m\^2 daily in 2 evenly divided doses, orally with water within 30 minutes after a meal, taken on days 1 to 14 of each 21 day cycle.
    id
    OG000
    title
    Neratinib Plus Capecitabine
  2. description
    lapatinib 1250 mg orally, once daily, continuously in 21 day cycles, and capecitabine 2000 mg/m\^2 daily in 2 evenly divided doses, orally with water within 30 minutes after a meal, taken on days 1 to 14 of each 21 day cycle.
    id
    OG001
    title
    Lapatinib Plus Capecitabine
param Type
MEAN
population Description
Randomized ITT Population
reporting Status
POSTED
time Frame
From randomization date to recurrence, progression or death, assessed up to 38 months. The result is based on primary analysis data cut.
title
Centrally Assessed Progression Free Survival
type
PRIMARY
unit Of Measure
months

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