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NCT02327078 · OUTCOME

Phase 2: Duration of Response

A Study of the Safety, Tolerability, and Efficacy of Epacadostat Administered in Combination With Nivolumab in Select Advanced Cancers (ECHO-204) · Source last updated 2025-08-14

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 first dose up end of the study (up to approximately 6 years)

What was measured

DOR is defined as the time from the first overall response contributing to an objective response (CR or PR) to the earlier of the participant's death and first overall response of PD. CR was defined as disappearance of all target lesions. PR was defined as At least a 30% decrease in the sum of diameters (SOD) of target lesions, taking as reference the Baseline sum diameters. PD was defined as at least a 20% increase in the SOD of target lesions.

Analysis population: The Phase 2 Full Analysis Population includes all participants enrolled in the study who received at least 1 dose of study drug. The data is reported only for responders and per cancer type for this outcome measure.

Groups in this outcome

Phase 2: Epacadostat 100 mg + Nivolumab 240 in Colorectal Cancer

Participants with Colorectal Cancer received epacadostat 100 mg BID in combination with nivolumab 240 mg IV infusion Q2W on Days 1, 15, 29, and 43 of each 8-week cycle.

Phase 2: Epacadostat 300 mg + Nivolumab 240 mg in DLBCL

Participants with DLBCL received epacadostat 300 mg BID in combination with nivolumab 240 mg IV infusion Q2W on Days 1, 15, 29, and 43 of each 8-week cycle.

Phase 2: Epacadostat 100/300 mg + Nivolumab 240 mg in Melanoma(I/O Naive)

Participants with Melanoma(I/O Naive) received epacadostat 100 mg or 300 mg BID in combination with nivolumab 240 mg IV infusion Q2W on Days 1, 15, 29, and 43 of each 8-week cycle.

Phase 2 Epacadostat 100mg + Nivolumab 480 mg in Melanoma (I/O Relapsed)

Participants with Melanoma (I/O Relapsed) received epacadostat 100 mg BID in combination with nivolumab 480 mg IV infusion Q2W on Days 1, 15, 29, and 43 of each 8-week cycle.

Phase 2 Epacadostat 100mg + Nivolumab 480 mg in Melanoma (I/O Refractory)

Participants with Melanoma (I/O Refractory) received epacadostat 100 mg BID in combination with nivolumab 480 mg IV infusion Q2W on Days 1, 15, 29, and 43 of each 8-week cycle.

Phase 2 Epacadostat 100/300 mg + Nivolumab 240 mg in NSCLC

Participants with NSCLC received epacadostat 100 mg or 300 mg BID in combination with nivolumab 240 mg IV infusion Q2W on Days 1, 15, 29, and 43 of each 8-week cycle.

Phase 2 Epacadostat 100/300 mg + Nivolumab 240 mg in Ovarian Cancer

Participants with Ovarian Cancer received epacadostat 100 mg or 300 mg BID in combination with nivolumab 240 mg IV infusion Q2W on Days 1, 15, 29, and 43 of each 8-week cycle.

Phase 2 Epacadostat 100/300 mg + Nivolumab 240 mg in SCCHN

Participants with SCCHN received epacadostat 100/300 mg BID in combination with nivolumab 240 mg IV infusion Q2W on Days 1, 15, 29, and 43 of each 8-week cycle.

Phase 2 Epacadostat 100/300 mg + Nivolumab 240 mg in Glioblastoma

Participants with Glioblastoma received epacadostat 100/300 mg BID in combination with nivolumab 240 mg IV infusion Q2W on Days 1, 15, 29, and 43 of each 8-week cycle.

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 2: Epacadostat 100 mg + Nivolumab 240 in Colorectal Cancer1
Phase 2: Epacadostat 300 mg + Nivolumab 240 mg in DLBCL0
Phase 2: Epacadostat 100/300 mg + Nivolumab 240 mg in Melanoma(I/O Naive)31
Phase 2 Epacadostat 100mg + Nivolumab 480 mg in Melanoma (I/O Relapsed)1
Phase 2 Epacadostat 100mg + Nivolumab 480 mg in Melanoma (I/O Refractory)2
Phase 2 Epacadostat 100/300 mg + Nivolumab 240 mg in NSCLC12
Phase 2 Epacadostat 100/300 mg + Nivolumab 240 mg in Ovarian Cancer4
Phase 2 Epacadostat 100/300 mg + Nivolumab 240 mg in SCCHN8
Phase 2 Epacadostat 100/300 mg + Nivolumab 240 mg in Glioblastoma0

Reported measurements

Source class 1
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Phase 2: Epacadostat 100 mg + Nivolumab 240 in Colorectal CancerNANot reportedNANAMedian, lower and upper limit of 95% CI was not estimable for 1 participant.
Phase 2: Epacadostat 100/300 mg + Nivolumab 240 mg in Melanoma(I/O Naive)NANot reportedNANAMedian, lower and upper limit of 95% CI was not estimable due to low number of participants with events.
Phase 2 Epacadostat 100mg + Nivolumab 480 mg in Melanoma (I/O Relapsed)NANot reportedNANAMedian, lower and upper limit of 95% CI was not estimable for 1 participant.
Phase 2 Epacadostat 100mg + Nivolumab 480 mg in Melanoma (I/O Refractory)NANot reportedNANAMedian and 95% CI was not estimable due to low number of participants with events.
Phase 2 Epacadostat 100/300 mg + Nivolumab 240 mg in NSCLCNANot reported1.94NAMedian and upper limit of 95% CI was not estimable due to low number of participants with events.
Phase 2 Epacadostat 100/300 mg + Nivolumab 240 mg in Ovarian Cancer3.93Not reported3.135.53Not reported
Phase 2 Epacadostat 100/300 mg + Nivolumab 240 mg in SCCHNNANot reported7.37NAMedian and upper limit of 95% CI was not estimable due to low number of participants with events.
Complete source fields
classes
  1. categories
    1. measurements
      1. comment
        Median, lower and upper limit of 95% CI was not estimable for 1 participant.
        group Id
        OG000
        lower Limit
        NA
        upper Limit
        NA
        value
        NA
      2. comment
        Median, lower and upper limit of 95% CI was not estimable due to low number of participants with events.
        group Id
        OG002
        lower Limit
        NA
        upper Limit
        NA
        value
        NA
      3. comment
        Median, lower and upper limit of 95% CI was not estimable for 1 participant.
        group Id
        OG003
        lower Limit
        NA
        upper Limit
        NA
        value
        NA
      4. comment
        Median and 95% CI was not estimable due to low number of participants with events.
        group Id
        OG004
        lower Limit
        NA
        upper Limit
        NA
        value
        NA
      5. comment
        Median and upper limit of 95% CI was not estimable due to low number of participants with events.
        group Id
        OG005
        lower Limit
        1.94
        upper Limit
        NA
        value
        NA
      6. group Id
        OG006
        lower Limit
        3.13
        upper Limit
        5.53
        value
        3.93
      7. comment
        Median and upper limit of 95% CI was not estimable due to low number of participants with events.
        group Id
        OG007
        lower Limit
        7.37
        upper Limit
        NA
        value
        NA
denoms
  1. counts
    1. group Id
      OG000
      value
      1
    2. group Id
      OG001
      value
      0
    3. group Id
      OG002
      value
      31
    4. group Id
      OG003
      value
      1
    5. group Id
      OG004
      value
      2
    6. group Id
      OG005
      value
      12
    7. group Id
      OG006
      value
      4
    8. group Id
      OG007
      value
      8
    9. group Id
      OG008
      value
      0
    units
    Participants
description
DOR is defined as the time from the first overall response contributing to an objective response (CR or PR) to the earlier of the participant's death and first overall response of PD. CR was defined as disappearance of all target lesions. PR was defined as At least a 30% decrease in the sum of diameters (SOD) of target lesions, taking as reference the Baseline sum diameters. PD was defined as at least a 20% increase in the SOD of target lesions.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants with Colorectal Cancer received epacadostat 100 mg BID in combination with nivolumab 240 mg IV infusion Q2W on Days 1, 15, 29, and 43 of each 8-week cycle.
    id
    OG000
    title
    Phase 2: Epacadostat 100 mg + Nivolumab 240 in Colorectal Cancer
  2. description
    Participants with DLBCL received epacadostat 300 mg BID in combination with nivolumab 240 mg IV infusion Q2W on Days 1, 15, 29, and 43 of each 8-week cycle.
    id
    OG001
    title
    Phase 2: Epacadostat 300 mg + Nivolumab 240 mg in DLBCL
  3. description
    Participants with Melanoma(I/O Naive) received epacadostat 100 mg or 300 mg BID in combination with nivolumab 240 mg IV infusion Q2W on Days 1, 15, 29, and 43 of each 8-week cycle.
    id
    OG002
    title
    Phase 2: Epacadostat 100/300 mg + Nivolumab 240 mg in Melanoma(I/O Naive)
  4. description
    Participants with Melanoma (I/O Relapsed) received epacadostat 100 mg BID in combination with nivolumab 480 mg IV infusion Q2W on Days 1, 15, 29, and 43 of each 8-week cycle.
    id
    OG003
    title
    Phase 2 Epacadostat 100mg + Nivolumab 480 mg in Melanoma (I/O Relapsed)
  5. description
    Participants with Melanoma (I/O Refractory) received epacadostat 100 mg BID in combination with nivolumab 480 mg IV infusion Q2W on Days 1, 15, 29, and 43 of each 8-week cycle.
    id
    OG004
    title
    Phase 2 Epacadostat 100mg + Nivolumab 480 mg in Melanoma (I/O Refractory)
  6. description
    Participants with NSCLC received epacadostat 100 mg or 300 mg BID in combination with nivolumab 240 mg IV infusion Q2W on Days 1, 15, 29, and 43 of each 8-week cycle.
    id
    OG005
    title
    Phase 2 Epacadostat 100/300 mg + Nivolumab 240 mg in NSCLC
  7. description
    Participants with Ovarian Cancer received epacadostat 100 mg or 300 mg BID in combination with nivolumab 240 mg IV infusion Q2W on Days 1, 15, 29, and 43 of each 8-week cycle.
    id
    OG006
    title
    Phase 2 Epacadostat 100/300 mg + Nivolumab 240 mg in Ovarian Cancer
  8. description
    Participants with SCCHN received epacadostat 100/300 mg BID in combination with nivolumab 240 mg IV infusion Q2W on Days 1, 15, 29, and 43 of each 8-week cycle.
    id
    OG007
    title
    Phase 2 Epacadostat 100/300 mg + Nivolumab 240 mg in SCCHN
  9. description
    Participants with Glioblastoma received epacadostat 100/300 mg BID in combination with nivolumab 240 mg IV infusion Q2W on Days 1, 15, 29, and 43 of each 8-week cycle.
    id
    OG008
    title
    Phase 2 Epacadostat 100/300 mg + Nivolumab 240 mg in Glioblastoma
param Type
MEDIAN
population Description
The Phase 2 Full Analysis Population includes all participants enrolled in the study who received at least 1 dose of study drug. The data is reported only for responders and per cancer type for this outcome measure.
reporting Status
POSTED
time Frame
From first dose up end of the study (up to approximately 6 years)
title
Phase 2: Duration of Response
type
SECONDARY
unit Of Measure
months

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