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NCT04607421 · OUTCOME

Phase 3: Progression After Next Line of Treatment (PFS2) - 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 randomization to date of discontinuation of next-line treatment after PD or PD2 or death or censoring date, whichever occurred first (maximum up to 37.25 months)

What was measured

PFS2 was defined as the time from the date of randomization to the date of discontinuation of next-line treatment after first objective PD by investigator assessment, to second objective disease progression (PD2), or death from any cause, whichever occurred first. PD2: was progressive disease after the start of subsequent anticancer therapy based on investigator assessment. PFS2 was censored at start date of next-line anticancer treatment (NTX) if PD date \> NTX start date and there was no death, at last contact date if withdrawal of consent date \>= date of randomization or end of study or if participant lost to follow-up or if no prior conditions are met or PD and no NTX and there was no death.

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

Groups in this outcome

Phase 3: Arm A [EC]

Participants received encorafenib 300 mg QD orally and cetuximab 500 mg/m\^2 IV infusion for 120 minutes Q2W. Participants received treatment in 28-day cycles.

Phase 3: Arm B [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.

Phase 3: Arm C [Standard of Care Chemotherapy, Control Arm]

Participants received standard of care (SOC) chemotherapy per Investigator's choice: mFOLFOX6 with or without bevacizumab or FOLFOXIRI with or without bevacizumab or CAPOX with or without bevacizumab. Bevacizumab was optional and it was given per prescribing instructions of treating physician. mFOLFOX6 (28-day Cycle): 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; FOLFOXIRI (28-day Cycle): fluorouracil 2400 or 3200 mg/m\^2 continuous IV infusion over 46-48 hours Q2W (per local standard of care); leucovorin 400 mg/m\^2 IV infusion for 120 minutes Q2W and oxaliplatin 85 mg/m\^2 IV infusion for 120 minutes Q2W and irinotecan 165 mg/m\^2 as IV infusion for 90 minutes Q2W; CAPOX (21-day Cycle): capecitabine 1000 mg/m\^2 oral tablet twice daily on Days 1-14 and oxaliplatin 130 mg/m\^2 IV infusion for 120 minutes Q3W.

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

Analysis denominator · Participants

GroupSource count
Phase 3: Arm A [EC]158
Phase 3: Arm B [EC + mFOLFOX6]236
Phase 3: Arm C [Standard of Care Chemotherapy, Control Arm]243

Reported measurements

Source class 1
Values in Months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Phase 3: Arm A [EC]14.3Not reported12.716.6Not reported
Phase 3: Arm B [EC + mFOLFOX6]20.7Not reported19.023.9Not reported
Phase 3: Arm C [Standard of Care Chemotherapy, Control Arm]12.7Not reported11.213.7Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        12.7
        upper Limit
        16.6
        value
        14.3
      2. group Id
        OG001
        lower Limit
        19.0
        upper Limit
        23.9
        value
        20.7
      3. group Id
        OG002
        lower Limit
        11.2
        upper Limit
        13.7
        value
        12.7
denoms
  1. counts
    1. group Id
      OG000
      value
      158
    2. group Id
      OG001
      value
      236
    3. group Id
      OG002
      value
      243
    units
    Participants
description
PFS2 was defined as the time from the date of randomization to the date of discontinuation of next-line treatment after first objective PD by investigator assessment, to second objective disease progression (PD2), or death from any cause, whichever occurred first. PD2: was progressive disease after the start of subsequent anticancer therapy based on investigator assessment. PFS2 was censored at start date of next-line anticancer treatment (NTX) if PD date \> NTX start date and there was no death, at last contact date if withdrawal of consent date \>= date of randomization or end of study or if participant lost to follow-up or if no prior conditions are met or PD and no NTX and there was no death.
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. Participants received treatment in 28-day cycles.
    id
    OG000
    title
    Phase 3: Arm A [EC]
  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
    Phase 3: Arm B [EC + mFOLFOX6]
  3. description
    Participants received standard of care (SOC) chemotherapy per Investigator's choice: mFOLFOX6 with or without bevacizumab or FOLFOXIRI with or without bevacizumab or CAPOX with or without bevacizumab. Bevacizumab was optional and it was given per prescribing instructions of treating physician. mFOLFOX6 (28-day Cycle): 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; FOLFOXIRI (28-day Cycle): fluorouracil 2400 or 3200 mg/m\^2 continuous IV infusion over 46-48 hours Q2W (per local standard of care); leucovorin 400 mg/m\^2 IV infusion for 120 minutes Q2W and oxaliplatin 85 mg/m\^2 IV infusion for 120 minutes Q2W and irinotecan 165 mg/m\^2 as IV infusion for 90 minutes Q2W; CAPOX (21-day Cycle): capecitabine 1000 mg/m\^2 oral tablet twice daily on Days 1-14 and oxaliplatin 130 mg/m\^2 IV infusion for 120 minutes Q3W.
    id
    OG002
    title
    Phase 3: Arm C [Standard of Care Chemotherapy, Control Arm]
param Type
MEDIAN
population Description
The FAS for Phase 3 included all participants who were randomized in the Phase 3 portion of the study, respectively.
reporting Status
POSTED
time Frame
From date of randomization to date of discontinuation of next-line treatment after PD or PD2 or death or censoring date, whichever occurred first (maximum up to 37.25 months)
title
Phase 3: Progression After Next Line of Treatment (PFS2) - FAS
type
SECONDARY
unit Of Measure
Months

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Preserved source evidence · Not medical advice