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NCT00069095 · OUTCOME

BOR as Assessed by the IRC According to RECIST: Non-inferiority of XELOX Versus FOLFOX-4

A Study of Capecitabine (Xeloda) and Bevacizumab as a First-line Therapy in Patients With Metastatic Colorectal Cancer · Source last updated 2016-10-06

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

Measure
NUMBER
Unit
Percentage of responders
Interval / dispersion
Not reported
Time frame
From baseline until disease progression/recurrence, approximately 2 years 6 months

What was measured

According to the RECIST criteria, the BOR in an individual participant was the best response recorded from the start of the treatment until disease progression/recurrence (taking the smallest measurements recorded since the baseline assessment as a reference for PD). The BOR as assessed by the IRC was determined based on tumor assessments that were made up to and including 28 days after last intake of study medication in the primary study treatment phase. Responders were defined as the percentage of participants with a complete response (CR) or partial response (PR). Non-inferiority of the XELOX-containing arms was compared with the FOLFOX-4-containing arms.

Analysis population: The EPP excluded participants from the ITT who had violated major protocol inclusion or exclusion criteria or participants who were randomized and did not receive at least one dose of capecitabine, 5-FU, oxaliplatin, or bevacizumab/placebo.

Groups in this outcome

FOLFOX-4/FOLFOX-4+P/FOLFOX-4+BV

Participants from the initial 2-arm part and the 2x2 factorial part of the study including the following groups - 1. Folfox-4: Participants who received 2-week cycles of infused leucovorin, bolus injection fluorouracil and continuous infusion fluorouracil (given on days 1 and 2), combined with intravenous oxaliplatin (given on day 1). 2. Folfox-4+P: Participants who received 2-week cycles of infused leucovorin, bolus injection fluorouracil and continuous infusion fluorouracil (given on days 1 and 2), combined with intravenous oxaliplatin and placebo control for bevacizumab (both given on day 1 every 2 weeks). 3. Folfox-4+BV: Participants who received 2-week cycles of infused leucovorin, bolus injection fluorouracil and continuous infusion fluorouracil (given on days 1 and 2), combined with intravenous oxaliplatin and intravenous bevacizumab (both given on day 1 every 2 weeks).

XELOX/XELOX+P/XELOX+BV

Participants from the initial 2-arm part and the 2x2 factorial part of the study including the following groups - 1. Xelox: Capecitabine was administered as an oral twice-daily outpatient intermittent treatment (3-week cycles consisting of 2 weeks of treatment followed by 1 week without treatment) combined with intravenous oxaliplatin (given on day 1). 2. Xelox+P: Capecitabine was administered as an oral twice-daily outpatient intermittent treatment (3-week cycles consisting of 2 weeks of treatment followed by 1 week without treatment) combined with intravenous oxaliplatin and placebo (P) control for bevacizumab (both given on day 1 every 3 weeks). 3. Xelox+BV: Capecitabine was administered as an oral twice-daily outpatient intermittent treatment (3-week cycles consisting of 2 weeks of treatment followed by 1 week without treatment) combined with intravenous oxaliplatin and intravenous bevacizumab (both given on day 1 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
FOLFOX-4/FOLFOX-4+P/FOLFOX-4+BV937
XELOX/XELOX+P/XELOX+BV967

Reported measurements

Source class 1
Values in Percentage of responders · Interval/dispersion: Not reported
GroupValueSpreadLowerUpperComment
FOLFOX-4/FOLFOX-4+P/FOLFOX-4+BV38.6Not reportedNot reportedNot reportedNot reported
XELOX/XELOX+P/XELOX+BV37.1Not reportedNot reportedNot reportedNot reported

Source statistical analyses

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

  1. ci Lower Limit
    0.76
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    97.5
    ci Upper Limit
    1.16
    group Description
    Non-inferiority of XELOX with/without bevacizumab to FOLFOX-4 with/without bevacizumab was tested by the pair of hypotheses - H0: OR(XELOX/XELOX+P/XELOX+BV)/(FOLFOX-4/FOLFOX-4+P/FOLFOX-4+BV) \</= 0.66 versus H1: OR(XELOX/XELOX+P/XELOX+BV)/(FOLFOX-4/FOLFOX-4+P/FOLFOX-4+BV) \> 0.66
    group Ids
    1. OG000
    2. OG001
    non Inferiority Comment
    The analysis was based on the two-sided 97.5% confidence interval for OR(XELOX/XELOX+P/XELOX+BV)/(FOLFOX-4/FOLFOX-4+P/FOLFOX-4+BV). Non-inferiority of XELOX with/without bevacizumab to FOLFOX-4 with/without bevacizumab shall be concluded if the lower limit of this confidence interval is above 0.66.
    non Inferiority Type
    NON_INFERIORITY_OR_EQUIVALENCE
    param Type
    Odds Ratio (OR)
    param Value
    0.94
    tested Non Inferiority
    true
Complete source fields
analyses
  1. ci Lower Limit
    0.76
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    97.5
    ci Upper Limit
    1.16
    group Description
    Non-inferiority of XELOX with/without bevacizumab to FOLFOX-4 with/without bevacizumab was tested by the pair of hypotheses - H0: OR(XELOX/XELOX+P/XELOX+BV)/(FOLFOX-4/FOLFOX-4+P/FOLFOX-4+BV) \</= 0.66 versus H1: OR(XELOX/XELOX+P/XELOX+BV)/(FOLFOX-4/FOLFOX-4+P/FOLFOX-4+BV) \> 0.66
    group Ids
    1. OG000
    2. OG001
    non Inferiority Comment
    The analysis was based on the two-sided 97.5% confidence interval for OR(XELOX/XELOX+P/XELOX+BV)/(FOLFOX-4/FOLFOX-4+P/FOLFOX-4+BV). Non-inferiority of XELOX with/without bevacizumab to FOLFOX-4 with/without bevacizumab shall be concluded if the lower limit of this confidence interval is above 0.66.
    non Inferiority Type
    NON_INFERIORITY_OR_EQUIVALENCE
    param Type
    Odds Ratio (OR)
    param Value
    0.94
    tested Non Inferiority
    true
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        value
        38.6
      2. group Id
        OG001
        value
        37.1
denoms
  1. counts
    1. group Id
      OG000
      value
      937
    2. group Id
      OG001
      value
      967
    units
    Participants
description
According to the RECIST criteria, the BOR in an individual participant was the best response recorded from the start of the treatment until disease progression/recurrence (taking the smallest measurements recorded since the baseline assessment as a reference for PD). The BOR as assessed by the IRC was determined based on tumor assessments that were made up to and including 28 days after last intake of study medication in the primary study treatment phase. Responders were defined as the percentage of participants with a complete response (CR) or partial response (PR). Non-inferiority of the XELOX-containing arms was compared with the FOLFOX-4-containing arms.
groups
  1. description
    Participants from the initial 2-arm part and the 2x2 factorial part of the study including the following groups - 1. Folfox-4: Participants who received 2-week cycles of infused leucovorin, bolus injection fluorouracil and continuous infusion fluorouracil (given on days 1 and 2), combined with intravenous oxaliplatin (given on day 1). 2. Folfox-4+P: Participants who received 2-week cycles of infused leucovorin, bolus injection fluorouracil and continuous infusion fluorouracil (given on days 1 and 2), combined with intravenous oxaliplatin and placebo control for bevacizumab (both given on day 1 every 2 weeks). 3. Folfox-4+BV: Participants who received 2-week cycles of infused leucovorin, bolus injection fluorouracil and continuous infusion fluorouracil (given on days 1 and 2), combined with intravenous oxaliplatin and intravenous bevacizumab (both given on day 1 every 2 weeks).
    id
    OG000
    title
    FOLFOX-4/FOLFOX-4+P/FOLFOX-4+BV
  2. description
    Participants from the initial 2-arm part and the 2x2 factorial part of the study including the following groups - 1. Xelox: Capecitabine was administered as an oral twice-daily outpatient intermittent treatment (3-week cycles consisting of 2 weeks of treatment followed by 1 week without treatment) combined with intravenous oxaliplatin (given on day 1). 2. Xelox+P: Capecitabine was administered as an oral twice-daily outpatient intermittent treatment (3-week cycles consisting of 2 weeks of treatment followed by 1 week without treatment) combined with intravenous oxaliplatin and placebo (P) control for bevacizumab (both given on day 1 every 3 weeks). 3. Xelox+BV: Capecitabine was administered as an oral twice-daily outpatient intermittent treatment (3-week cycles consisting of 2 weeks of treatment followed by 1 week without treatment) combined with intravenous oxaliplatin and intravenous bevacizumab (both given on day 1 every 3 weeks).
    id
    OG001
    title
    XELOX/XELOX+P/XELOX+BV
param Type
NUMBER
population Description
The EPP excluded participants from the ITT who had violated major protocol inclusion or exclusion criteria or participants who were randomized and did not receive at least one dose of capecitabine, 5-FU, oxaliplatin, or bevacizumab/placebo.
reporting Status
POSTED
time Frame
From baseline until disease progression/recurrence, approximately 2 years 6 months
title
BOR as Assessed by the IRC According to RECIST: Non-inferiority of XELOX Versus FOLFOX-4
type
SECONDARY
unit Of Measure
Percentage of responders

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