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NCT03682536 · OUTCOME

Percentage of Participants Achieving Red Blood Cell Transfusion Independence (RBC-TI) for a Consecutive 24-week Period

A Study to Compare the Efficacy and Safety of Luspatercept (ACE-536) Versus Epoetin Alfa for the Treatment of Anemia Due to IPSS-R Very Low, Low, or Intermediate Risk Myelodysplastic Syndromes (MDS) Participants Who Require Red Blood Cell Transfusions and Are ESA Naïve · Source last updated 2024-11-20

Results reported by the registry submitting party. Population, time horizon, units and missing values must be read together.

Measure
NUMBER
Unit
Percent of participants
Interval / dispersion
95% Confidence Interval
Time frame
Week 1 through Week 48

What was measured

Defined as percentage of participants achieving RBC-TI for \>= 168 days during any consecutive 168-day period from Week 1 through Week 48.

Analysis population: ITT Population (all randomized participants regardless of whether or not the participant received treatment) whose first dose date is at least 337 days from the cutoff date or discontinued early are included in this analysis.

Groups in this outcome

Luspatercept

Starting dose of 1.0 mg/kg subcutaneous injection every 3 weeks (21 days; Q3W). Dose levels can be increased in a stepwise manner beyond the starting dose to 1.33 mg/kg, and up to a maximum of 1.75 mg/kg.

Epoetin Alfa

Starting dose of 450 IU/kg (maximum total starting dose is 40,000 IU) subcutaneous injection once every week (7 days; QW). Dose levels can be increased in a stepwise manner beyond the starting dose to 787.5 IU/kg, and up to a maximum of 1,050 IU/kg (with a maximum total dose of 80,000 IU).

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

Analysis denominator · Participants

GroupSource count
Luspatercept163
Epoetin Alfa167

Reported measurements

Source class 1
Values in Percent of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Luspatercept60.7Not reported52.868.3Not reported
Epoetin Alfa39.5Not reported32.147.4Not reported

Source statistical analyses

Group order, estimate direction, methods and comments are retained. No treatment ranking is inferred.

  1. ci Lower Limit
    1.6
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    4.3
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    <.0001
    param Type
    Odds Ratio (OR)
    param Value
    2.6
    statistical Method
    Cochran-Mantel-Haenszel
Complete source fields
analyses
  1. ci Lower Limit
    1.6
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    4.3
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    <.0001
    param Type
    Odds Ratio (OR)
    param Value
    2.6
    statistical Method
    Cochran-Mantel-Haenszel
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        52.8
        upper Limit
        68.3
        value
        60.7
      2. group Id
        OG001
        lower Limit
        32.1
        upper Limit
        47.4
        value
        39.5
denoms
  1. counts
    1. group Id
      OG000
      value
      163
    2. group Id
      OG001
      value
      167
    units
    Participants
description
Defined as percentage of participants achieving RBC-TI for \>= 168 days during any consecutive 168-day period from Week 1 through Week 48.
dispersion Type
95% Confidence Interval
groups
  1. description
    Starting dose of 1.0 mg/kg subcutaneous injection every 3 weeks (21 days; Q3W). Dose levels can be increased in a stepwise manner beyond the starting dose to 1.33 mg/kg, and up to a maximum of 1.75 mg/kg.
    id
    OG000
    title
    Luspatercept
  2. description
    Starting dose of 450 IU/kg (maximum total starting dose is 40,000 IU) subcutaneous injection once every week (7 days; QW). Dose levels can be increased in a stepwise manner beyond the starting dose to 787.5 IU/kg, and up to a maximum of 1,050 IU/kg (with a maximum total dose of 80,000 IU).
    id
    OG001
    title
    Epoetin Alfa
param Type
NUMBER
population Description
ITT Population (all randomized participants regardless of whether or not the participant received treatment) whose first dose date is at least 337 days from the cutoff date or discontinued early are included in this analysis.
reporting Status
POSTED
time Frame
Week 1 through Week 48
title
Percentage of Participants Achieving Red Blood Cell Transfusion Independence (RBC-TI) for a Consecutive 24-week Period
type
SECONDARY
unit Of Measure
Percent of participants

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Preserved source evidence · Not medical advice