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NCT04607421 · OUTCOME

SLI: Overall Survival (OS) According to Line of Therapy - FAS

A Study of Encorafenib Plus Cetuximab With or Without Chemotherapy in People With Previously Untreated Metastatic Colorectal Cancer · Source last updated 2026-06-11

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
From date of first dose to death due to any cause or censoring date, whichever occurred first (maximum up to 33.9 months)

What was measured

OS was defined as the time from the date of first dose to death due to any cause. If a participant was not known to have died at the time of the cutoff for analysis, then OS was censored at the date of last contact. In this outcome measure, OS for first line (no prior treatment) and second line (participant received a prior treatment defined as advanced/metastatic or locoregional disease or maintenance or if neoadjuvant/adjuvant with a disease recurrence occurred during or within 6 months of the last dose of therapy) was presented. Analysis was performed using Kaplan Meier method.

Analysis population: The FAS for SLI included all participants who were randomized in the SLI portion of the study. Here, "Number Analyzed" signifies participants evaluable for specified rows. All participants under "Overall Number of Participants Analyzed" contributed data to the table but may not have data evaluable for each row.

Groups in this outcome

SLI: Cohort 1 [EC + FOLFIRI]

Participants received encorafenib 300 milligrams (mg) once daily (QD) orally (received after Cycle 1 Day 3) and cetuximab 500 mg per square meters (mg/m\^2) intravenous (IV) infusion for 120 minutes once every 2 weeks (Q2W) along with fluorouracil 400 mg/m\^2 IV bolus then 2400 mg/m\^2 continuous IV infusion over 46-48 hours Q2W; leucovorin 400 mg/m\^2 IV infusion for 120 minutes Q2W and irinotecan 180 mg/m\^2 as IV infusion for 90 minutes Q2W. Participants received treatment in 28-day cycles.

SLI: Cohort 2 [EC + mFOLFOX6]

Participants received encorafenib 300 mg QD orally and cetuximab 500 mg/m\^2 IV infusion for 120 minutes Q2W along with fluorouracil 400 mg/m\^2 IV bolus then 2400 mg/m\^2 continuous IV infusion over 46-48 hours Q2W; leucovorin 400 mg/m\^2 IV infusion for 120 minutes Q2W and oxaliplatin 85 mg/m\^2 IV infusion for 120 minutes Q2W. Participants received treatment in 28-day cycles.

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

Analysis denominator · Participants

GroupSource count
SLI: Cohort 1 [EC + FOLFIRI]30
SLI: Cohort 2 [EC + mFOLFOX6]27

Reported measurements

First Line Treatment

Analysis denominator · Participants

GroupSource count
SLI: Cohort 1 [EC + FOLFIRI]12
SLI: Cohort 2 [EC + mFOLFOX6]19
Values in Months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
SLI: Cohort 1 [EC + FOLFIRI]NANot reported23.7NAMedian and upper limit of 95% CI could not be estimated due to insufficient number of participants with events.
SLI: Cohort 2 [EC + mFOLFOX6]17.6Not reported9.1NAUpper limit of 95% CI could not be estimated due to insufficient number of participants with events.
Second Line Treatment

Analysis denominator · Participants

GroupSource count
SLI: Cohort 1 [EC + FOLFIRI]18
SLI: Cohort 2 [EC + mFOLFOX6]8
Values in Months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
SLI: Cohort 1 [EC + FOLFIRI]19.7Not reported13.925.1Not reported
SLI: Cohort 2 [EC + mFOLFOX6]16.6Not reported10.418.7Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. comment
        Median and upper limit of 95% CI could not be estimated due to insufficient number of participants with events.
        group Id
        OG000
        lower Limit
        23.7
        upper Limit
        NA
        value
        NA
      2. comment
        Upper limit of 95% CI could not be estimated due to insufficient number of participants with events.
        group Id
        OG001
        lower Limit
        9.1
        upper Limit
        NA
        value
        17.6
    denoms
    1. counts
      1. group Id
        OG000
        value
        12
      2. group Id
        OG001
        value
        19
      units
      Participants
    title
    First Line Treatment
  2. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        13.9
        upper Limit
        25.1
        value
        19.7
      2. group Id
        OG001
        lower Limit
        10.4
        upper Limit
        18.7
        value
        16.6
    denoms
    1. counts
      1. group Id
        OG000
        value
        18
      2. group Id
        OG001
        value
        8
      units
      Participants
    title
    Second Line Treatment
denoms
  1. counts
    1. group Id
      OG000
      value
      30
    2. group Id
      OG001
      value
      27
    units
    Participants
description
OS was defined as the time from the date of first dose to death due to any cause. If a participant was not known to have died at the time of the cutoff for analysis, then OS was censored at the date of last contact. In this outcome measure, OS for first line (no prior treatment) and second line (participant received a prior treatment defined as advanced/metastatic or locoregional disease or maintenance or if neoadjuvant/adjuvant with a disease recurrence occurred during or within 6 months of the last dose of therapy) was presented. Analysis was performed using Kaplan Meier method.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received encorafenib 300 milligrams (mg) once daily (QD) orally (received after Cycle 1 Day 3) and cetuximab 500 mg per square meters (mg/m\^2) intravenous (IV) infusion for 120 minutes once every 2 weeks (Q2W) along with fluorouracil 400 mg/m\^2 IV bolus then 2400 mg/m\^2 continuous IV infusion over 46-48 hours Q2W; leucovorin 400 mg/m\^2 IV infusion for 120 minutes Q2W and irinotecan 180 mg/m\^2 as IV infusion for 90 minutes Q2W. Participants received treatment in 28-day cycles.
    id
    OG000
    title
    SLI: Cohort 1 [EC + FOLFIRI]
  2. description
    Participants received encorafenib 300 mg QD orally and cetuximab 500 mg/m\^2 IV infusion for 120 minutes Q2W along with fluorouracil 400 mg/m\^2 IV bolus then 2400 mg/m\^2 continuous IV infusion over 46-48 hours Q2W; leucovorin 400 mg/m\^2 IV infusion for 120 minutes Q2W and oxaliplatin 85 mg/m\^2 IV infusion for 120 minutes Q2W. Participants received treatment in 28-day cycles.
    id
    OG001
    title
    SLI: Cohort 2 [EC + mFOLFOX6]
param Type
MEDIAN
population Description
The FAS for SLI included all participants who were randomized in the SLI portion of the study. Here, "Number Analyzed" signifies participants evaluable for specified rows. All participants under "Overall Number of Participants Analyzed" contributed data to the table but may not have data evaluable for each row.
reporting Status
POSTED
time Frame
From date of first dose to death due to any cause or censoring date, whichever occurred first (maximum up to 33.9 months)
title
SLI: Overall Survival (OS) According to Line of Therapy - FAS
type
SECONDARY
unit Of Measure
Months

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Preserved source evidence · Not medical advice