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NCT00069095 · OUTCOME

Duration of Overall Response as Assessed by the Investigator According to RECIST: Superiority Analysis of Chemotherapy Plus Bevacizumab Versus Chemotherapy Alone

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
MEDIAN
Unit
days
Interval / dispersion
95% Confidence Interval
Time frame
From baseline until disease progression/recurrence, approximately 2 years 6 months

What was measured

Duration of overall response was measured from the time that measurement criteria were first met for CR or PR (whichever status was recorded first) until the first date when progressive disease or death was documented. It was based on tumor assessments made by the investigators according to the RECIST criteria. Participants who neither progressed nor died were censored at the date of the last tumor assessment. Participants undergoing surgical resection with curative intent were censored at the date of surgery. Superiority of the BV-containing arms was compared with the chemotherapy alone arms.

Analysis population: The ITT population included all randomized participants who provided written informed consent.

Groups in this outcome

FOLFOX-4+P/XELOX+P

Participants from the 2x2 factorial part of the study including the following groups - 1. Folfox-4+P: Participants 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). 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).

FOLFOX-4+BV/XELOX+BV

Participants from the 2x2 factorial part of the study including the following groups - 1. 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). 2. 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+P/XELOX+P701
FOLFOX-4+BV/XELOX+BV699

Reported measurements

Source class 1
Values in days · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
FOLFOX-4+P/XELOX+P225.0Not reported217240Not reported
FOLFOX-4+BV/XELOX+BV257.0Not reported241278Not reported

Source statistical analyses

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

  1. ci Lower Limit
    0.66
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    97.5
    ci Upper Limit
    1.01
    group Description
    Testing for superiority was based on the stratified log-rank test and used a two-sided significance level of 2.5%.The hazard ratio (HR) of bevacizumab in combination with chemotherapy versus chemotherapy alone \[HR(FOLFOX-4+P/XELOX+P)/(FOLFOX-4+BV/XELOX+BV)\] was presented.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER
    p Value
    0.0307
    param Type
    Hazard Ratio (HR)
    param Value
    0.82
    statistical Method
    Log Rank
    tested Non Inferiority
    false
Complete source fields
analyses
  1. ci Lower Limit
    0.66
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    97.5
    ci Upper Limit
    1.01
    group Description
    Testing for superiority was based on the stratified log-rank test and used a two-sided significance level of 2.5%.The hazard ratio (HR) of bevacizumab in combination with chemotherapy versus chemotherapy alone \[HR(FOLFOX-4+P/XELOX+P)/(FOLFOX-4+BV/XELOX+BV)\] was presented.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER
    p Value
    0.0307
    param Type
    Hazard Ratio (HR)
    param Value
    0.82
    statistical Method
    Log Rank
    tested Non Inferiority
    false
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        217
        upper Limit
        240
        value
        225.0
      2. group Id
        OG001
        lower Limit
        241
        upper Limit
        278
        value
        257.0
denoms
  1. counts
    1. group Id
      OG000
      value
      701
    2. group Id
      OG001
      value
      699
    units
    Participants
description
Duration of overall response was measured from the time that measurement criteria were first met for CR or PR (whichever status was recorded first) until the first date when progressive disease or death was documented. It was based on tumor assessments made by the investigators according to the RECIST criteria. Participants who neither progressed nor died were censored at the date of the last tumor assessment. Participants undergoing surgical resection with curative intent were censored at the date of surgery. Superiority of the BV-containing arms was compared with the chemotherapy alone arms.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants from the 2x2 factorial part of the study including the following groups - 1. Folfox-4+P: Participants 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). 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).
    id
    OG000
    title
    FOLFOX-4+P/XELOX+P
  2. description
    Participants from the 2x2 factorial part of the study including the following groups - 1. 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). 2. 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
    FOLFOX-4+BV/XELOX+BV
param Type
MEDIAN
population Description
The ITT population included all randomized participants who provided written informed consent.
reporting Status
POSTED
time Frame
From baseline until disease progression/recurrence, approximately 2 years 6 months
title
Duration of Overall Response as Assessed by the Investigator According to RECIST: Superiority Analysis of Chemotherapy Plus Bevacizumab Versus Chemotherapy Alone
type
SECONDARY
unit Of Measure
days

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Preserved source evidence · Not medical advice