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NCT04607421 · OUTCOME

SLI: Duration of Response (DOR) as Assessed by Investigator 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 radiographic evidence of response (CR or PR) to earliest documented PD or death due to any cause whichever occurred first (maximum up to 33.9 months)

What was measured

DOR: time from date of first radiographic evidence of response (CR/PR) to earliest documented PD per RECIST v1.1 as assessed by response reported by investigator on eCRF, or death by any cause. CR: disappearance of all target lesions and non-target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis \<10 mm. PR: \>=30% decrease under baseline of sum of diameters of all target measurable lesions. PD: 20% increase in sum of diameters of target measurable lesions above smallest sum observed, with minimum absolute increase of 5 mm for target disease or unequivocal progression of pre-existing lesions for non-target disease or any new lesion. DOR for first line and second line is presented. Analysis performed by Kaplan Meier method.

Analysis population: The FAS for SLI included all participants who were randomized in the SLI portion of the study. Here, "Overall Number of Participants Analyzed" signifies participants evaluable for this outcome measure with a confirmed objective response as assessed by investigator and "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]20
SLI: Cohort 2 [EC + mFOLFOX6]17

Reported measurements

First Line Treatment

Analysis denominator · Participants

GroupSource count
SLI: Cohort 1 [EC + FOLFIRI]9
SLI: Cohort 2 [EC + mFOLFOX6]13
Values in Months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
SLI: Cohort 1 [EC + FOLFIRI]15.2Not reported10.6NAThe upper limit of 95% confidence interval (CI) could not be estimated due to insufficient number of participants with events.
SLI: Cohort 2 [EC + mFOLFOX6]6.9Not reported3.7NAThe upper 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]11
SLI: Cohort 2 [EC + mFOLFOX6]4
Values in Months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
SLI: Cohort 1 [EC + FOLFIRI]12.5Not reported3.418.7Not reported
SLI: Cohort 2 [EC + mFOLFOX6]5.6Not reported2.7NAThe upper limit of 95% CI could not be estimated due to insufficient number of participants with events.
Complete source fields
classes
  1. categories
    1. measurements
      1. comment
        The upper limit of 95% confidence interval (CI) could not be estimated due to insufficient number of participants with events.
        group Id
        OG000
        lower Limit
        10.6
        upper Limit
        NA
        value
        15.2
      2. comment
        The upper limit of 95% CI could not be estimated due to insufficient number of participants with events.
        group Id
        OG001
        lower Limit
        3.7
        upper Limit
        NA
        value
        6.9
    denoms
    1. counts
      1. group Id
        OG000
        value
        9
      2. group Id
        OG001
        value
        13
      units
      Participants
    title
    First Line Treatment
  2. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        3.4
        upper Limit
        18.7
        value
        12.5
      2. comment
        The upper limit of 95% CI could not be estimated due to insufficient number of participants with events.
        group Id
        OG001
        lower Limit
        2.7
        upper Limit
        NA
        value
        5.6
    denoms
    1. counts
      1. group Id
        OG000
        value
        11
      2. group Id
        OG001
        value
        4
      units
      Participants
    title
    Second Line Treatment
denoms
  1. counts
    1. group Id
      OG000
      value
      20
    2. group Id
      OG001
      value
      17
    units
    Participants
description
DOR: time from date of first radiographic evidence of response (CR/PR) to earliest documented PD per RECIST v1.1 as assessed by response reported by investigator on eCRF, or death by any cause. CR: disappearance of all target lesions and non-target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis \<10 mm. PR: \>=30% decrease under baseline of sum of diameters of all target measurable lesions. PD: 20% increase in sum of diameters of target measurable lesions above smallest sum observed, with minimum absolute increase of 5 mm for target disease or unequivocal progression of pre-existing lesions for non-target disease or any new lesion. DOR for first line and second line is presented. Analysis performed by 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, "Overall Number of Participants Analyzed" signifies participants evaluable for this outcome measure with a confirmed objective response as assessed by investigator and "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 radiographic evidence of response (CR or PR) to earliest documented PD or death due to any cause whichever occurred first (maximum up to 33.9 months)
title
SLI: Duration of Response (DOR) as Assessed by Investigator According to Line of Therapy - FAS
type
SECONDARY
unit Of Measure
Months

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Preserved source evidence · Not medical advice