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NCT02604433 · OUTCOME

Longest Duration of Transfusion Independence

An Efficacy and Safety Study of Luspatercept (ACE-536) Versus Placebo in Adults Who Require Regular Red Blood Cell Transfusions Due to Beta (β) Thalassemia · Source last updated 2023-04-18

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

Measure
MEDIAN
Unit
Days
Interval / dispersion
95% Confidence Interval
Time frame
From first dose through 3 weeks post last dose (up to approximately 218 weeks)

What was measured

Transfusion independence was defined as the absence of any transfusion during any consecutive "rolling" 8-week time interval within the treatment period, ie, Days 1 to 56, Days 2 to 57 and so on. Longest duration of transfusion independence was estimated based on Kaplan-Meier model.

Analysis population: All randomized participants who were transfusion independent for ≥ 8 weeks

Groups in this outcome

Luspatercept + BSC

Luspatercept (ACE-536) was administered subcutaneously (SC) at a starting dose level of 1 mg/kg once every 21 days. Participants could be dose-titrated to 1.25 mg/kg, but the maximum total dose should not exceed 120 mg, total dose per administration during the Treatment Period, the Long-term Treatment Period, and Open-Label Treatment Period. BSC = Best Supportive Care

Placebo + BSC

Placebo (normal saline) was administered subcutaneously (SC) in volumes to match active treatment once every 21 days. BSC = Best Supportive Care

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

Analysis denominator · Participants

GroupSource count
Luspatercept + BSC27
Placebo + BSC2

Reported measurements

Source class 1
Values in Days · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Luspatercept + BSC72.0Not reported62.0103.0Not reported
Placebo + BSC71.5Not reported62.0NAInsufficient number of events to determine the upper limit
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        62.0
        upper Limit
        103.0
        value
        72.0
      2. comment
        Insufficient number of events to determine the upper limit
        group Id
        OG001
        lower Limit
        62.0
        upper Limit
        NA
        value
        71.5
denoms
  1. counts
    1. group Id
      OG000
      value
      27
    2. group Id
      OG001
      value
      2
    units
    Participants
description
Transfusion independence was defined as the absence of any transfusion during any consecutive "rolling" 8-week time interval within the treatment period, ie, Days 1 to 56, Days 2 to 57 and so on. Longest duration of transfusion independence was estimated based on Kaplan-Meier model.
dispersion Type
95% Confidence Interval
groups
  1. description
    Luspatercept (ACE-536) was administered subcutaneously (SC) at a starting dose level of 1 mg/kg once every 21 days. Participants could be dose-titrated to 1.25 mg/kg, but the maximum total dose should not exceed 120 mg, total dose per administration during the Treatment Period, the Long-term Treatment Period, and Open-Label Treatment Period. BSC = Best Supportive Care
    id
    OG000
    title
    Luspatercept + BSC
  2. description
    Placebo (normal saline) was administered subcutaneously (SC) in volumes to match active treatment once every 21 days. BSC = Best Supportive Care
    id
    OG001
    title
    Placebo + BSC
param Type
MEDIAN
population Description
All randomized participants who were transfusion independent for ≥ 8 weeks
reporting Status
POSTED
time Frame
From first dose through 3 weeks post last dose (up to approximately 218 weeks)
title
Longest Duration of Transfusion Independence
type
SECONDARY
unit Of Measure
Days

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

Preserved source evidence · Not medical advice