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NCT02908672 · OUTCOME

Duration of Response (DOR), as Determined by Investigator Using RECIST v1.1

A Study of Atezolizumab Plus Cobimetinib and Vemurafenib Versus Placebo Plus Cobimetinib and Vemurafenib in Previously Untreated BRAFv600 Mutation-Positive Patients With Metastatic or Unresectable Locally Advanced Melanoma · Source last updated 2025-07-20

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
Baseline up to PD or death due to any cause, whichever occurred first (up to approximately 56 months)

What was measured

DOR was defined as the time from the first occurrence of a documented OR to PD, as determined by the investigator according to RECIST v1.1, or death from any cause, whichever occurred first. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference smallest sum on study, including baseline. In addition to the relative increase of 20%, the SOD must also demonstrate an absolute increase of at least 5 mm. CR was defined as the disappearance of all target lesions or any pathological lymph nodes (whether target or non-target) having a reduction in short axis to \<10 mm. PR was defined as at least a 30% decrease in the SOD of target lesions, taking as reference the baseline SOD.

Analysis population: ITT population included all randomized participants, whether or not study treatment was received. Only participants with measurable disease at baseline were analyzed for this outcome measure.

Groups in this outcome

Arm A: Pbo + Cobi + Vem

Participants received vemurafenib, 960 mg (four, 240 mg tablets), PO, BID along with cobimetinib, 60 mg (three, 20 mg tablets) PO, QD on Days 1 to 21 only followed by vemurafenib 960 mg (four, 240 mg tablets), PO, BID on Days 22 to 28 during the 28 day run-in period. During triple combination period (Cycle 1 onwards), participants received atezolizumab matching placebo as IV infusion on Days 1 and 15, cobimetinib, 60 mg (three, 20 mg tablets) PO, QD, on Days 1 to 21 and vemurafenib 960 mg (four, 240 mg tablets) PO, BID on Days 1 to 28. Study treatment was continued until investigator determined PD, death, unacceptable toxicity, withdrawal of consent, or pregnancy, whichever occurred first.

Arm B: Atezo + Cobi + Vem

Participants received vemurafenib, 960 mg (four, 240 mg tablets) PO, BID along with cobimetinib 60 mg (three, 20 mg tablets) PO, QD on Days 1 to 21 only followed by vemurafenib 720 mg (three, 240 mg tablets) PO, BID and vemurafenib matching placebo, PO, BID on Days 22 to 28 during the 28 day run-in period. During triple combination period (Cycle 1 onwards), participants received atezolizumab 840 mg as IV infusion on Days 1 and 15, cobimetinib, 60 mg (three, 20 mg tablets) PO, QD, on Days 1 to 21, vemurafenib 720 mg (three, 240 mg tablets) PO BID on Days 1 to 28, and vemurafenib placebo (1 tablet) PO BID on Days 1 to 28. Study treatment was continued until investigator determined PD, death, unacceptable toxicity, withdrawal of consent, or pregnancy, whichever occurred first.

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

Analysis denominator · Participants

GroupSource count
Arm A: Pbo + Cobi + Vem246
Arm B: Atezo + Cobi + Vem255

Reported measurements

Source class 1
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Arm A: Pbo + Cobi + Vem12.6Not reported10.516.7Not reported
Arm B: Atezo + Cobi + Vem21.0Not reported16.632.2Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        10.5
        upper Limit
        16.7
        value
        12.6
      2. group Id
        OG001
        lower Limit
        16.6
        upper Limit
        32.2
        value
        21.0
denoms
  1. counts
    1. group Id
      OG000
      value
      246
    2. group Id
      OG001
      value
      255
    units
    Participants
description
DOR was defined as the time from the first occurrence of a documented OR to PD, as determined by the investigator according to RECIST v1.1, or death from any cause, whichever occurred first. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference smallest sum on study, including baseline. In addition to the relative increase of 20%, the SOD must also demonstrate an absolute increase of at least 5 mm. CR was defined as the disappearance of all target lesions or any pathological lymph nodes (whether target or non-target) having a reduction in short axis to \<10 mm. PR was defined as at least a 30% decrease in the SOD of target lesions, taking as reference the baseline SOD.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received vemurafenib, 960 mg (four, 240 mg tablets), PO, BID along with cobimetinib, 60 mg (three, 20 mg tablets) PO, QD on Days 1 to 21 only followed by vemurafenib 960 mg (four, 240 mg tablets), PO, BID on Days 22 to 28 during the 28 day run-in period. During triple combination period (Cycle 1 onwards), participants received atezolizumab matching placebo as IV infusion on Days 1 and 15, cobimetinib, 60 mg (three, 20 mg tablets) PO, QD, on Days 1 to 21 and vemurafenib 960 mg (four, 240 mg tablets) PO, BID on Days 1 to 28. Study treatment was continued until investigator determined PD, death, unacceptable toxicity, withdrawal of consent, or pregnancy, whichever occurred first.
    id
    OG000
    title
    Arm A: Pbo + Cobi + Vem
  2. description
    Participants received vemurafenib, 960 mg (four, 240 mg tablets) PO, BID along with cobimetinib 60 mg (three, 20 mg tablets) PO, QD on Days 1 to 21 only followed by vemurafenib 720 mg (three, 240 mg tablets) PO, BID and vemurafenib matching placebo, PO, BID on Days 22 to 28 during the 28 day run-in period. During triple combination period (Cycle 1 onwards), participants received atezolizumab 840 mg as IV infusion on Days 1 and 15, cobimetinib, 60 mg (three, 20 mg tablets) PO, QD, on Days 1 to 21, vemurafenib 720 mg (three, 240 mg tablets) PO BID on Days 1 to 28, and vemurafenib placebo (1 tablet) PO BID on Days 1 to 28. Study treatment was continued until investigator determined PD, death, unacceptable toxicity, withdrawal of consent, or pregnancy, whichever occurred first.
    id
    OG001
    title
    Arm B: Atezo + Cobi + Vem
param Type
MEDIAN
population Description
ITT population included all randomized participants, whether or not study treatment was received. Only participants with measurable disease at baseline were analyzed for this outcome measure.
reporting Status
POSTED
time Frame
Baseline up to PD or death due to any cause, whichever occurred first (up to approximately 56 months)
title
Duration of Response (DOR), as Determined by Investigator Using RECIST v1.1
type
SECONDARY
unit Of Measure
months

Download exact source JSON → · Snapshot ctgov-results-191f4516d4760045304b24a0

Preserved source evidence · Not medical advice