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NCT01154140 · OUTCOME

Time to Extracranial Progression (EC-TTP) Based on IRR

A Clinical Trial Testing The Efficacy Of Crizotinib Versus Standard Chemotherapy Pemetrexed Plus Cisplatin Or Carboplatin In Patients With ALK Positive Non Squamous Cancer Of The Lung · Source last updated 2017-11-06

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
Randomization to objective extracranial progression or last tumor assessment without progression before any additional anti-cancer therapy (up to 35 months)

What was measured

EC-TTP was defined similarly to TTP, but only considering extracranial disease (excluding intracranial disease) and the progression was determined based on either new extracranial lesions or progression of existing extracranial lesions. TTP was defined as the time from the date of randomization to the date of the first documentation of objective tumor progression according to RECIST v1.1 determined by IRR. Objective tumor progression was defined as 20% increase in the sum of the diameters of target measurable lesions taking as reference the smallest sum on study (this includes the baseline sum if that is the smallest on study), with a minimum absolute increase of 5 mm or clear progression of pre-existing non-target lesions, or the appearance of any new clear lesions.

Analysis population: FA population included all participants who were randomized with study treatment assignment designated according to the initial randomization.

Groups in this outcome

Crizotinib

Crizotinib 250 mg capsule, orally twice daily was administered in treatment cycle of 21 days. Participants could continue crizotinib treatment beyond the time of RECIST v1.1 defined PD, as determined by IRR, at the discretion of the investigator if the participant was perceived to be experiencing clinical benefit.

Chemotherapy

Standard doses of chemotherapy (pemetrexed/cisplatin or pemetrexed/carboplatin) were administered intravenously on Day 1 of each cycle for a maximum of 6 cycles. Pemetrexed 500 mg per meter square (m)\^2 IV infusion according to standard of care was administered over 10 min; either cisplatin 75 mg/m\^2 IV infusion was administered approximately 30 min after the end of the pemetrexed infusion or carboplatin was administered at a dose calculated to produce an AUC of 5 or 6 mg\*min/mL, approximately 30 min after end of pemetrexed infusion.

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

Analysis denominator · Participants

GroupSource count
Crizotinib172
Chemotherapy171

Reported measurements

Source class 1
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Crizotinib15.2Not reported12.621.9Not reported
Chemotherapy7.2Not reported6.98.5Not reported

Source statistical analyses

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

  1. ci Lower Limit
    0.286
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.524
    group Description
    Analysis was based on the Cox Proportional hazards model assuming proportional hazards, a HR less than 1 indicated a reduction in hazard rate in favor of Crizotinib.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER
    p Value
    <0.0001
    p Value Comment
    P-value was obtained from 1-sided unstratified log-rank test.
    param Type
    Hazard Ratio (HR)
    param Value
    0.387
    statistical Method
    Log Rank
Complete source fields
analyses
  1. ci Lower Limit
    0.286
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.524
    group Description
    Analysis was based on the Cox Proportional hazards model assuming proportional hazards, a HR less than 1 indicated a reduction in hazard rate in favor of Crizotinib.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER
    p Value
    <0.0001
    p Value Comment
    P-value was obtained from 1-sided unstratified log-rank test.
    param Type
    Hazard Ratio (HR)
    param Value
    0.387
    statistical Method
    Log Rank
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        12.6
        upper Limit
        21.9
        value
        15.2
      2. group Id
        OG001
        lower Limit
        6.9
        upper Limit
        8.5
        value
        7.2
denoms
  1. counts
    1. group Id
      OG000
      value
      172
    2. group Id
      OG001
      value
      171
    units
    Participants
description
EC-TTP was defined similarly to TTP, but only considering extracranial disease (excluding intracranial disease) and the progression was determined based on either new extracranial lesions or progression of existing extracranial lesions. TTP was defined as the time from the date of randomization to the date of the first documentation of objective tumor progression according to RECIST v1.1 determined by IRR. Objective tumor progression was defined as 20% increase in the sum of the diameters of target measurable lesions taking as reference the smallest sum on study (this includes the baseline sum if that is the smallest on study), with a minimum absolute increase of 5 mm or clear progression of pre-existing non-target lesions, or the appearance of any new clear lesions.
dispersion Type
95% Confidence Interval
groups
  1. description
    Crizotinib 250 mg capsule, orally twice daily was administered in treatment cycle of 21 days. Participants could continue crizotinib treatment beyond the time of RECIST v1.1 defined PD, as determined by IRR, at the discretion of the investigator if the participant was perceived to be experiencing clinical benefit.
    id
    OG000
    title
    Crizotinib
  2. description
    Standard doses of chemotherapy (pemetrexed/cisplatin or pemetrexed/carboplatin) were administered intravenously on Day 1 of each cycle for a maximum of 6 cycles. Pemetrexed 500 mg per meter square (m)\^2 IV infusion according to standard of care was administered over 10 min; either cisplatin 75 mg/m\^2 IV infusion was administered approximately 30 min after the end of the pemetrexed infusion or carboplatin was administered at a dose calculated to produce an AUC of 5 or 6 mg\*min/mL, approximately 30 min after end of pemetrexed infusion.
    id
    OG001
    title
    Chemotherapy
param Type
MEDIAN
population Description
FA population included all participants who were randomized with study treatment assignment designated according to the initial randomization.
reporting Status
POSTED
time Frame
Randomization to objective extracranial progression or last tumor assessment without progression before any additional anti-cancer therapy (up to 35 months)
title
Time to Extracranial Progression (EC-TTP) Based on IRR
type
SECONDARY
unit Of Measure
months

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Preserved source evidence · Not medical advice