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NCT00122460 · OUTCOME

Overall Survival Time (OS)

Cetuximab (Erbitux) in Combination With Cisplatin or Carboplatin and 5-Fluorouracil in the First Line Treatment of Subjects With Recurrent and/or Metastatic Squamous Cell Carcinoma of the Head and Neck (EXTREME) · Source last updated 2014-07-23

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
time from randomization to death or last day known to be alive, reported between day of first patient randomised, 21 Dec 2004, until cut-off date 12 Mar 2007

What was measured

Time from randomization to death. Patients without event are censored at the last date known to be alive or at the clinical cut-off date, whatever is earlier.

Analysis population: Primary analysis on Intent to Treat (ITT) population (allocation to treatment groups as randomized). Analysis performed after the required number of 340 deaths had been reported (expected effect: 36% increase in median survival time, power = 80%, alpha=5% (two-sided)). The Clinical cut-off date was 12 Mar 2007.

Groups in this outcome

Cetuximab Plus Chemotherapy

Subjects in will receive initial dose of 400 mg/m\^2 cetuximab (over 2 hours) followed by weekly doses of 250 mg/m\^2 (over 1 hour). All doses will be given by intravenous (IV) infusion. Subjects will receive either Cisplatin (100 mg/m\^2 on day 1) + 5-FU (1000 mg/m\^2 continuous IV from day 1 to day 4) every 3 weeks or Carboplatin (Area under the curve (AUC) 5 IV on day 1) + 5-FU (1000 mg/m\^2 continuous IV from day 1 to day 4) every 3 weeks.

Chemotherapy Alone

All doses will be given by IV infusion. Subjects will receive either Cisplatin (100 mg/m\^2 on day 1) + 5-FU (1000 mg/m\^2 continuous IV from day 1 to day 4) every 3 weeks or Carboplatin (AUC 5 IV on day 1) + 5-FU (1000 mg/m\^2 continuous IV from day 1 to day 4) every 3 weeks.

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

Analysis denominator · Participants

GroupSource count
Cetuximab Plus Chemotherapy222
Chemotherapy Alone220

Reported measurements

Source class 1
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Cetuximab Plus Chemotherapy10.1Not reported8.611.2Not reported
Chemotherapy Alone7.4Not reported6.48.3Not reported

Source statistical analyses

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

  1. ci Lower Limit
    0.644
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.986
    group Description
    The primary analysis tested the equality of OS between treatment groups applying a 2-sided stratified log-rank test (α=5%), taking into account the strata used for randomization (previous chemotherapy (CTX) \[no vs. yes\] and Karnofsky Performance Status (KPS) \[\<80 vs. ≥80\]). Median overall survival was estimated using the Kaplan-Meier method. The Hazard Ratio (HR) of cetuximab + CTX over CTX alone was calculated using the Cox proportional hazards model stratified by randomization strata.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER
    p Value
    0.036
    param Type
    Hazard Ratio (HR)
    param Value
    0.797
    statistical Method
    Stratified Log Rank
    tested Non Inferiority
    false
Complete source fields
analyses
  1. ci Lower Limit
    0.644
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.986
    group Description
    The primary analysis tested the equality of OS between treatment groups applying a 2-sided stratified log-rank test (α=5%), taking into account the strata used for randomization (previous chemotherapy (CTX) \[no vs. yes\] and Karnofsky Performance Status (KPS) \[\<80 vs. ≥80\]). Median overall survival was estimated using the Kaplan-Meier method. The Hazard Ratio (HR) of cetuximab + CTX over CTX alone was calculated using the Cox proportional hazards model stratified by randomization strata.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER
    p Value
    0.036
    param Type
    Hazard Ratio (HR)
    param Value
    0.797
    statistical Method
    Stratified Log Rank
    tested Non Inferiority
    false
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        8.6
        upper Limit
        11.2
        value
        10.1
      2. group Id
        OG001
        lower Limit
        6.4
        upper Limit
        8.3
        value
        7.4
denoms
  1. counts
    1. group Id
      OG000
      value
      222
    2. group Id
      OG001
      value
      220
    units
    Participants
description
Time from randomization to death. Patients without event are censored at the last date known to be alive or at the clinical cut-off date, whatever is earlier.
dispersion Type
95% Confidence Interval
groups
  1. description
    Subjects in will receive initial dose of 400 mg/m\^2 cetuximab (over 2 hours) followed by weekly doses of 250 mg/m\^2 (over 1 hour). All doses will be given by intravenous (IV) infusion. Subjects will receive either Cisplatin (100 mg/m\^2 on day 1) + 5-FU (1000 mg/m\^2 continuous IV from day 1 to day 4) every 3 weeks or Carboplatin (Area under the curve (AUC) 5 IV on day 1) + 5-FU (1000 mg/m\^2 continuous IV from day 1 to day 4) every 3 weeks.
    id
    OG000
    title
    Cetuximab Plus Chemotherapy
  2. description
    All doses will be given by IV infusion. Subjects will receive either Cisplatin (100 mg/m\^2 on day 1) + 5-FU (1000 mg/m\^2 continuous IV from day 1 to day 4) every 3 weeks or Carboplatin (AUC 5 IV on day 1) + 5-FU (1000 mg/m\^2 continuous IV from day 1 to day 4) every 3 weeks.
    id
    OG001
    title
    Chemotherapy Alone
param Type
MEDIAN
population Description
Primary analysis on Intent to Treat (ITT) population (allocation to treatment groups as randomized). Analysis performed after the required number of 340 deaths had been reported (expected effect: 36% increase in median survival time, power = 80%, alpha=5% (two-sided)). The Clinical cut-off date was 12 Mar 2007.
reporting Status
POSTED
time Frame
time from randomization to death or last day known to be alive, reported between day of first patient randomised, 21 Dec 2004, until cut-off date 12 Mar 2007
title
Overall Survival Time (OS)
type
PRIMARY
unit Of Measure
months

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Preserved source evidence · Not medical advice