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NCT01736683 · OUTCOME

Percentage of Participants With Erythroid Hematological Improvement (HI-E) Starting Before the Completion of Five Cycles of Treatment (Responder Rate)

Study of Sotatercept for the Treatment of Anemia in low-or Intermediate-1 Risk Myelodysplastic Syndromes (MDS) or Non-proliferative Chronic Myelomonocytic Leukemia (CMML) · Source last updated 2022-10-24

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
Not reported
Time frame
Day 2 to Day 142

What was measured

The responder rate includes non-transfusion dependent efficacy (NTDE) participants and transfusion dependent efficacy (TDE) participants. For non-transfusion dependence efficacy (NTDE) participants who required \< 4 units of RBCs in the 8 weeks prior to start of therapy, HI-E was defined as an increase of \>=1.5 g/dL hemoglobin sustained for 56 days over a period of \>=8 weeks. For transfusion dependence efficacy (TDE) participants who required \>=4 units of RBCs in the 8 weeks prior to start of therapy, HI-E was defined as a decrease of \>= 4 units of RBCs transfused sustained for 56 days over a period of 8 weeks.

Analysis population: Efficacy Evaluable Population: all participants who take at least one dose of study medication and have baseline and at least one post-baseline assessment of efficacy without major deviation from protocol.

Groups in this outcome

Sotatercept 0.1 mg/kg

Sotatercept 0.1 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.

Sotatercept 0.3 mg/kg

Sotatercept 0.3 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.

Sotatercept 0.5 mg/kg

Sotatercept 0.5 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 0.5 mg/kg treatment group, the 1.0 mg/kg treatment group began inclusion in the randomization scheme.

Sotatercept 1.0 mg/kg

Sotatercept 1.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 1.0 mg/kg treatment group, the 2.0 mg/kg treatment group began inclusion in the randomization scheme. Following evaluation of all treatment group data by the Steering Committee, enrollment continued only in the 1.0 mg/kg arm because the arm had the greatest frequency of erythroid hematological improvement (HI-E).

Sotatercept 2.0 mg/kg

Sotatercept 2.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. The 2.0 mg/kg sotatercept dose was reduced to 1.5 mg/kg for ongoing and newly enrolled participants by protocol amendment.

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

Analysis denominator · Participants

GroupSource count
Sotatercept 0.1 mg/kg7
Sotatercept 0.3 mg/kg6
Sotatercept 0.5 mg/kg21
Sotatercept 1.0 mg/kg35
Sotatercept 2.0 mg/kg5

Reported measurements

All participants

Analysis denominator · Participants

GroupSource count
Sotatercept 0.1 mg/kg7
Sotatercept 0.3 mg/kg6
Sotatercept 0.5 mg/kg21
Sotatercept 1.0 mg/kg35
Sotatercept 2.0 mg/kg5
Values in percentage of participants · Interval/dispersion: Not reported
GroupValueSpreadLowerUpperComment
Sotatercept 0.1 mg/kg0Not reportedNot reportedNot reportedNot reported
Sotatercept 0.3 mg/kg66.7Not reportedNot reportedNot reportedNot reported
Sotatercept 0.5 mg/kg42.9Not reportedNot reportedNot reportedNot reported
Sotatercept 1.0 mg/kg60.0Not reportedNot reportedNot reportedNot reported
Sotatercept 2.0 mg/kg40.0Not reportedNot reportedNot reportedNot reported
NTDE subpopulation

Analysis denominator · Participants

GroupSource count
Sotatercept 0.1 mg/kg0
Sotatercept 0.3 mg/kg0
Sotatercept 0.5 mg/kg3
Sotatercept 1.0 mg/kg8
Sotatercept 2.0 mg/kg1
Values in percentage of participants · Interval/dispersion: Not reported
GroupValueSpreadLowerUpperComment
Sotatercept 0.5 mg/kg33.3Not reportedNot reportedNot reportedNot reported
Sotatercept 1.0 mg/kg62.5Not reportedNot reportedNot reportedNot reported
Sotatercept 2.0 mg/kg100Not reportedNot reportedNot reportedNot reported
TDE subpopulation

Analysis denominator · Participants

GroupSource count
Sotatercept 0.1 mg/kg7
Sotatercept 0.3 mg/kg6
Sotatercept 0.5 mg/kg18
Sotatercept 1.0 mg/kg27
Sotatercept 2.0 mg/kg4
Values in percentage of participants · Interval/dispersion: Not reported
GroupValueSpreadLowerUpperComment
Sotatercept 0.1 mg/kg0Not reportedNot reportedNot reportedNot reported
Sotatercept 0.3 mg/kg66.7Not reportedNot reportedNot reportedNot reported
Sotatercept 0.5 mg/kg44.4Not reportedNot reportedNot reportedNot reported
Sotatercept 1.0 mg/kg59.3Not reportedNot reportedNot reportedNot reported
Sotatercept 2.0 mg/kg25.0Not reportedNot reportedNot reportedNot reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        value
        0
      2. group Id
        OG001
        value
        66.7
      3. group Id
        OG002
        value
        42.9
      4. group Id
        OG003
        value
        60.0
      5. group Id
        OG004
        value
        40.0
    denoms
    1. counts
      1. group Id
        OG000
        value
        7
      2. group Id
        OG001
        value
        6
      3. group Id
        OG002
        value
        21
      4. group Id
        OG003
        value
        35
      5. group Id
        OG004
        value
        5
      units
      Participants
    title
    All participants
  2. categories
    1. measurements
      1. group Id
        OG002
        value
        33.3
      2. group Id
        OG003
        value
        62.5
      3. group Id
        OG004
        value
        100
    denoms
    1. counts
      1. group Id
        OG000
        value
        0
      2. group Id
        OG001
        value
        0
      3. group Id
        OG002
        value
        3
      4. group Id
        OG003
        value
        8
      5. group Id
        OG004
        value
        1
      units
      Participants
    title
    NTDE subpopulation
  3. categories
    1. measurements
      1. group Id
        OG000
        value
        0
      2. group Id
        OG001
        value
        66.7
      3. group Id
        OG002
        value
        44.4
      4. group Id
        OG003
        value
        59.3
      5. group Id
        OG004
        value
        25.0
    denoms
    1. counts
      1. group Id
        OG000
        value
        7
      2. group Id
        OG001
        value
        6
      3. group Id
        OG002
        value
        18
      4. group Id
        OG003
        value
        27
      5. group Id
        OG004
        value
        4
      units
      Participants
    title
    TDE subpopulation
denoms
  1. counts
    1. group Id
      OG000
      value
      7
    2. group Id
      OG001
      value
      6
    3. group Id
      OG002
      value
      21
    4. group Id
      OG003
      value
      35
    5. group Id
      OG004
      value
      5
    units
    Participants
description
The responder rate includes non-transfusion dependent efficacy (NTDE) participants and transfusion dependent efficacy (TDE) participants. For non-transfusion dependence efficacy (NTDE) participants who required \< 4 units of RBCs in the 8 weeks prior to start of therapy, HI-E was defined as an increase of \>=1.5 g/dL hemoglobin sustained for 56 days over a period of \>=8 weeks. For transfusion dependence efficacy (TDE) participants who required \>=4 units of RBCs in the 8 weeks prior to start of therapy, HI-E was defined as a decrease of \>= 4 units of RBCs transfused sustained for 56 days over a period of 8 weeks.
groups
  1. description
    Sotatercept 0.1 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
    id
    OG000
    title
    Sotatercept 0.1 mg/kg
  2. description
    Sotatercept 0.3 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
    id
    OG001
    title
    Sotatercept 0.3 mg/kg
  3. description
    Sotatercept 0.5 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 0.5 mg/kg treatment group, the 1.0 mg/kg treatment group began inclusion in the randomization scheme.
    id
    OG002
    title
    Sotatercept 0.5 mg/kg
  4. description
    Sotatercept 1.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 1.0 mg/kg treatment group, the 2.0 mg/kg treatment group began inclusion in the randomization scheme. Following evaluation of all treatment group data by the Steering Committee, enrollment continued only in the 1.0 mg/kg arm because the arm had the greatest frequency of erythroid hematological improvement (HI-E).
    id
    OG003
    title
    Sotatercept 1.0 mg/kg
  5. description
    Sotatercept 2.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. The 2.0 mg/kg sotatercept dose was reduced to 1.5 mg/kg for ongoing and newly enrolled participants by protocol amendment.
    id
    OG004
    title
    Sotatercept 2.0 mg/kg
param Type
NUMBER
population Description
Efficacy Evaluable Population: all participants who take at least one dose of study medication and have baseline and at least one post-baseline assessment of efficacy without major deviation from protocol.
reporting Status
POSTED
time Frame
Day 2 to Day 142
title
Percentage of Participants With Erythroid Hematological Improvement (HI-E) Starting Before the Completion of Five Cycles of Treatment (Responder Rate)
type
PRIMARY
unit Of Measure
percentage of participants

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Preserved source evidence · Not medical advice