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NCT02601950 · OUTCOME

All Cohorts: Overall Survival (OS) Rate at Weeks 24, 32 and 56

A Study of Tazemetostat in Adult Participants With Soft Tissue Sarcoma · Source last updated 2025-06-22

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
At Weeks 24, 32 and 56

What was measured

OS was defined as the interval of time between the date of the first dose of study treatment and the date of death due to any cause. OS rate at 24, 32 and 56 weeks were estimated. Estimates were calculated with Kaplan-Meier analysis and 95% CIs using the complementary log-log transformation.

Analysis population: ITT population included all participants who received at least 1 dose of tazemetostat.

Groups in this outcome

Rhabdoid Tumors: Cohort 1

Participants with rhabdoid tumors (MRT, RTK, ATRT, and selected tumors with rhabdoid features, including SCCOHT, also known as MRTO) received tazemetostat 800 mg BID orally in continuous 28-day cycles until disease progression, development of an unacceptable toxicity, withdrawal of consent, or termination of the study.

Synovial Sarcoma: Cohort 2

Participants with relapsed or refractory synovial sarcoma with SS18-SSX rearrangement received tazemetostat 800 mg BID orally in continuous 28-day cycles until disease progression, development of an unacceptable toxicity, withdrawal of consent, or termination of the study.

Other INI1-negative: Cohort 3

Participants with other INI-1-negative tumors or any solid tumor with EZH2 GOF mutation, including EMPNST, EMC, myoepithelial carcinoma, other INI-1-negative malignant tumors with sponsor approval, any solid tumor with EZH2 GOF mutation including but not limited to Ewing's sarcoma and melanoma received tazemetostat 800 mg BID orally in continuous 28-day cycles until disease progression, development of an unacceptable toxicity, withdrawal of consent, or termination of the study.

RMC: Cohort 4

Participants with RMC received tazemetostat 800 mg BID orally in continuous 28-day cycles until disease progression, development of an unacceptable toxicity, withdrawal of consent, or termination of the study.

ES: Cohort 5

Participants with ES received tazemetostat 800 mg BID orally in continuous 28-day cycles until disease progression, development of an unacceptable toxicity, withdrawal of consent, or termination of the study.

ES Paired Biopsy: Cohort 6

Participants with ES undergoing optional tumour biopsy received tazemetostat 800 mg BID orally in continuous 28-day cycles until disease progression, development of an unacceptable toxicity, withdrawal of consent, or termination of the study.

Chordoma: Cohort 7

Participants with poorly differentiated chordoma (or other chordoma with sponsor approval) received tazemetostat 800 mg BID orally in continuous 28-day cycles until disease progression, development of an unacceptable toxicity, withdrawal of consent, or termination of the study.

ES 1600 mg: Cohort 8

Participants with ES received tazemetostat 1600 mg QD orally in continuous 28-day cycles until disease progression, development of an unacceptable toxicity, withdrawal of consent, or termination of the study.

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

Analysis denominator · Participants

GroupSource count
Rhabdoid Tumors: Cohort 132
Synovial Sarcoma: Cohort 233
Other INI1-negative: Cohort 332
RMC: Cohort 414
ES: Cohort 562
ES Paired Biopsy: Cohort 669
Chordoma: Cohort 718
ES 1600 mg: Cohort 87

Reported measurements

Week 24
Values in Percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Rhabdoid Tumors: Cohort 145.4Not reported27.661.6Not reported
Synovial Sarcoma: Cohort 281.4Not reported63.291.2Not reported
Other INI1-negative: Cohort 368.8Not reported49.781.8Not reported
RMC: Cohort 450.0Not reported22.972.2Not reported
ES: Cohort 585.5Not reported73.992.2Not reported
ES Paired Biopsy: Cohort 683.6Not reported72.390.6Not reported
Chordoma: Cohort 788.9Not reported62.497.1Not reported
ES 1600 mg: Cohort 883.3Not reported27.397.5Not reported
Week 32
Values in Percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Rhabdoid Tumors: Cohort 138.6Not reported21.855.2Not reported
Synovial Sarcoma: Cohort 268.9Not reported49.981.9Not reported
Other INI1-negative: Cohort 356.3Not reported37.671.3Not reported
RMC: Cohort 442.9Not reported17.766.0Not reported
ES: Cohort 577.2Not reported64.685.8Not reported
ES Paired Biopsy: Cohort 675.8Not reported63.684.4Not reported
Chordoma: Cohort 777.8Not reported51.191.0Not reported
ES 1600 mg: Cohort 866.7Not reported19.590.4Not reported
Week 56
Values in Percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Rhabdoid Tumors: Cohort 130.9Not reported15.547.7Not reported
Synovial Sarcoma: Cohort 237.6Not reported21.353.8Not reported
Other INI1-negative: Cohort 349.6Not reported31.465.4Not reported
RMC: Cohort 435.7Not reported13.059.4Not reported
ES: Cohort 557.3Not reported43.968.6Not reported
ES Paired Biopsy: Cohort 666.5Not reported53.776.6Not reported
Chordoma: Cohort 755.6Not reported30.574.8Not reported
ES 1600 mg: Cohort 844.4Not reported6.678.5Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        27.6
        upper Limit
        61.6
        value
        45.4
      2. group Id
        OG001
        lower Limit
        63.2
        upper Limit
        91.2
        value
        81.4
      3. group Id
        OG002
        lower Limit
        49.7
        upper Limit
        81.8
        value
        68.8
      4. group Id
        OG003
        lower Limit
        22.9
        upper Limit
        72.2
        value
        50.0
      5. group Id
        OG004
        lower Limit
        73.9
        upper Limit
        92.2
        value
        85.5
      6. group Id
        OG005
        lower Limit
        72.3
        upper Limit
        90.6
        value
        83.6
      7. group Id
        OG006
        lower Limit
        62.4
        upper Limit
        97.1
        value
        88.9
      8. group Id
        OG007
        lower Limit
        27.3
        upper Limit
        97.5
        value
        83.3
    title
    Week 24
  2. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        21.8
        upper Limit
        55.2
        value
        38.6
      2. group Id
        OG001
        lower Limit
        49.9
        upper Limit
        81.9
        value
        68.9
      3. group Id
        OG002
        lower Limit
        37.6
        upper Limit
        71.3
        value
        56.3
      4. group Id
        OG003
        lower Limit
        17.7
        upper Limit
        66.0
        value
        42.9
      5. group Id
        OG004
        lower Limit
        64.6
        upper Limit
        85.8
        value
        77.2
      6. group Id
        OG005
        lower Limit
        63.6
        upper Limit
        84.4
        value
        75.8
      7. group Id
        OG006
        lower Limit
        51.1
        upper Limit
        91.0
        value
        77.8
      8. group Id
        OG007
        lower Limit
        19.5
        upper Limit
        90.4
        value
        66.7
    title
    Week 32
  3. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        15.5
        upper Limit
        47.7
        value
        30.9
      2. group Id
        OG001
        lower Limit
        21.3
        upper Limit
        53.8
        value
        37.6
      3. group Id
        OG002
        lower Limit
        31.4
        upper Limit
        65.4
        value
        49.6
      4. group Id
        OG003
        lower Limit
        13.0
        upper Limit
        59.4
        value
        35.7
      5. group Id
        OG004
        lower Limit
        43.9
        upper Limit
        68.6
        value
        57.3
      6. group Id
        OG005
        lower Limit
        53.7
        upper Limit
        76.6
        value
        66.5
      7. group Id
        OG006
        lower Limit
        30.5
        upper Limit
        74.8
        value
        55.6
      8. group Id
        OG007
        lower Limit
        6.6
        upper Limit
        78.5
        value
        44.4
    title
    Week 56
denoms
  1. counts
    1. group Id
      OG000
      value
      32
    2. group Id
      OG001
      value
      33
    3. group Id
      OG002
      value
      32
    4. group Id
      OG003
      value
      14
    5. group Id
      OG004
      value
      62
    6. group Id
      OG005
      value
      69
    7. group Id
      OG006
      value
      18
    8. group Id
      OG007
      value
      7
    units
    Participants
description
OS was defined as the interval of time between the date of the first dose of study treatment and the date of death due to any cause. OS rate at 24, 32 and 56 weeks were estimated. Estimates were calculated with Kaplan-Meier analysis and 95% CIs using the complementary log-log transformation.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants with rhabdoid tumors (MRT, RTK, ATRT, and selected tumors with rhabdoid features, including SCCOHT, also known as MRTO) received tazemetostat 800 mg BID orally in continuous 28-day cycles until disease progression, development of an unacceptable toxicity, withdrawal of consent, or termination of the study.
    id
    OG000
    title
    Rhabdoid Tumors: Cohort 1
  2. description
    Participants with relapsed or refractory synovial sarcoma with SS18-SSX rearrangement received tazemetostat 800 mg BID orally in continuous 28-day cycles until disease progression, development of an unacceptable toxicity, withdrawal of consent, or termination of the study.
    id
    OG001
    title
    Synovial Sarcoma: Cohort 2
  3. description
    Participants with other INI-1-negative tumors or any solid tumor with EZH2 GOF mutation, including EMPNST, EMC, myoepithelial carcinoma, other INI-1-negative malignant tumors with sponsor approval, any solid tumor with EZH2 GOF mutation including but not limited to Ewing's sarcoma and melanoma received tazemetostat 800 mg BID orally in continuous 28-day cycles until disease progression, development of an unacceptable toxicity, withdrawal of consent, or termination of the study.
    id
    OG002
    title
    Other INI1-negative: Cohort 3
  4. description
    Participants with RMC received tazemetostat 800 mg BID orally in continuous 28-day cycles until disease progression, development of an unacceptable toxicity, withdrawal of consent, or termination of the study.
    id
    OG003
    title
    RMC: Cohort 4
  5. description
    Participants with ES received tazemetostat 800 mg BID orally in continuous 28-day cycles until disease progression, development of an unacceptable toxicity, withdrawal of consent, or termination of the study.
    id
    OG004
    title
    ES: Cohort 5
  6. description
    Participants with ES undergoing optional tumour biopsy received tazemetostat 800 mg BID orally in continuous 28-day cycles until disease progression, development of an unacceptable toxicity, withdrawal of consent, or termination of the study.
    id
    OG005
    title
    ES Paired Biopsy: Cohort 6
  7. description
    Participants with poorly differentiated chordoma (or other chordoma with sponsor approval) received tazemetostat 800 mg BID orally in continuous 28-day cycles until disease progression, development of an unacceptable toxicity, withdrawal of consent, or termination of the study.
    id
    OG006
    title
    Chordoma: Cohort 7
  8. description
    Participants with ES received tazemetostat 1600 mg QD orally in continuous 28-day cycles until disease progression, development of an unacceptable toxicity, withdrawal of consent, or termination of the study.
    id
    OG007
    title
    ES 1600 mg: Cohort 8
param Type
NUMBER
population Description
ITT population included all participants who received at least 1 dose of tazemetostat.
reporting Status
POSTED
time Frame
At Weeks 24, 32 and 56
title
All Cohorts: Overall Survival (OS) Rate at Weeks 24, 32 and 56
type
SECONDARY
unit Of Measure
Percentage of participants

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Preserved source evidence · Not medical advice