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NCT04607421 · OUTCOME

Cohort 3: ORR by Derived Investigator Assessment - 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
NUMBER
Unit
Percentage of participants
Interval / dispersion
95% Confidence Interval
Time frame
From date of randomization until documented PD, or start of subsequent anticancer therapy, or death, whichever occurred first (maximum up to 14.1 months)

What was measured

ORR was defined as the percentage of participants who achieved BOR of confirmed CR or PR according to RECIST v 1.1 by derived investigator assessment. CR: complete disappearance of all target lesions (with the exception of nodal disease) and non-target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 mm. PR: \>=30% decrease under baseline of the 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.

Analysis population: The FAS for Cohort 3 included all participants who were randomized in the Cohort 3 portion of the study, respectively.

Groups in this outcome

Cohort 3: Arm D [EC + FOLFIRI]

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 irinotecan 180 mg/m\^2 as IV infusion for 90 minutes Q2W. Participants received treatment in 28-day cycles.

Cohort 3: Arm E [FOLFIRI With or Without Bevacizumab]

Participants received 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 with or without bevacizumab. Bevacizumab was optional and it was given per prescribing instructions of treating physician. 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
Cohort 3: Arm D [EC + FOLFIRI]73
Cohort 3: Arm E [FOLFIRI With or Without Bevacizumab]74

Reported measurements

Source class 1
Values in Percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Cohort 3: Arm D [EC + FOLFIRI]60.3Not reported48.870.7Not reported
Cohort 3: Arm E [FOLFIRI With or Without Bevacizumab]40.5Not reported30.151.9Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        48.8
        upper Limit
        70.7
        value
        60.3
      2. group Id
        OG001
        lower Limit
        30.1
        upper Limit
        51.9
        value
        40.5
denoms
  1. counts
    1. group Id
      OG000
      value
      73
    2. group Id
      OG001
      value
      74
    units
    Participants
description
ORR was defined as the percentage of participants who achieved BOR of confirmed CR or PR according to RECIST v 1.1 by derived investigator assessment. CR: complete disappearance of all target lesions (with the exception of nodal disease) and non-target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 mm. PR: \>=30% decrease under baseline of the 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.
dispersion Type
95% Confidence Interval
groups
  1. 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 irinotecan 180 mg/m\^2 as IV infusion for 90 minutes Q2W. Participants received treatment in 28-day cycles.
    id
    OG000
    title
    Cohort 3: Arm D [EC + FOLFIRI]
  2. description
    Participants received 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 with or without bevacizumab. Bevacizumab was optional and it was given per prescribing instructions of treating physician. Participants received treatment in 28-day cycles.
    id
    OG001
    title
    Cohort 3: Arm E [FOLFIRI With or Without Bevacizumab]
param Type
NUMBER
population Description
The FAS for Cohort 3 included all participants who were randomized in the Cohort 3 portion of the study, respectively.
reporting Status
POSTED
time Frame
From date of randomization until documented PD, or start of subsequent anticancer therapy, or death, whichever occurred first (maximum up to 14.1 months)
title
Cohort 3: ORR by Derived Investigator Assessment - FAS
type
SECONDARY
unit Of Measure
Percentage of participants

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Preserved source evidence · Not medical advice