Skip to content
← Full study record

NCT01520909 · OUTCOME

Pharmacokinetic (PK) Assessments for Eltrombopag for Cmax

Study of a New Medication for Childhood Chronic Immune Thrombocytopenia (ITP), a Blood Disorder of Low Platelet Counts That Can Lead to Bruising Easily, Bleeding Gums, and/or Bleeding Inside the Body. · Source last updated 2015-03-10

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

Measure
GEOMETRIC_MEAN
Unit
micrograms per milliliter (ug/mL)
Interval / dispersion
95% Confidence Interval
Time frame
Part 1 Weeks 2, 4, 6, 8, 10, 12, and Part 2 Weeks 1-12 (Study Weeks 13 - 37)

What was measured

Single PK samples were collected at each visit during Part 1 Weeks 2, 4, 6, 8, 10, 12 and at each weekly or monthly visit during Part 2 Weeks 1-12 (Study Weeks 13-37). The concentration data were pooled across visits to identify population PK and variability parameter estimates and covariate effects. Cmax is defined as the maximum observed concentration. The Cmax for a 50mg dose was estimated for each cohort. From the final model, a single value of each PK parameter was estimated for each subject, and geometric mean (95% CI) values are presented for each cohort for a 50mg dose.

Analysis population: PK Population. Only those participants who provided pharmacokinetic samples were analyzed

Groups in this outcome

Eltrombopag Cohort 1 (12-17 Years)

Participants who received eltrombopag in Part 1 continued on the same dose in Part 2 unless adjustments were warranted according to the dosing guidelines. Participants who received placebo in Part 1 received Eltrombopag as per age criteria as follows:body weight \<27 kg received eltrombopag 37.5 mg QD, and those with a body weight \>=27 kg received eltrombopag 50 mg QD. Participants of East Asian ancestry received a starting dose of eltrombopag 25 mg QD.

Eltrombopag Cohort 2 (6-11 Years)

Participants who received eltrombopag in Part 1 continued on the same dose in Part 2 unless adjustments were warranted according to the dosing guidelines. Participants who received placebo in Part 1 received Eltrombopag as per age criteria as follows: body weight \<27 kg received eltrombopag 37.5 mg QD, and those with a body weight \>=27 kg received eltrombopag 50 mg QD. Participants of East Asian ancestry received a starting dose of eltrombopag 25 mg QD.

Eltrombopag Cohort 3 (1-5 Years)

Participants who received eltrombopag in Part 1 continued on the same dose in Part 2 unless adjustments were warranted according to the dosing guidelines. Participants who received placebo in Part 1 received Eltrombopag 1.2 mg/kg QD and; participants of East Asian ancestry received a starting dose of eltrombopag 0.8 mg/kg/day.

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

Analysis denominator · Participants

GroupSource count
Eltrombopag Cohort 1 (12-17 Years)33
Eltrombopag Cohort 2 (6-11 Years)38
Eltrombopag Cohort 3 (1-5 Years)19

Reported measurements

Source class 1
Values in micrograms per milliliter (ug/mL) · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Eltrombopag Cohort 1 (12-17 Years)6.94Not reported5.968.08Not reported
Eltrombopag Cohort 2 (6-11 Years)11.2Not reported9.9112.8Not reported
Eltrombopag Cohort 3 (1-5 Years)12.5Not reported10.714.6Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        5.96
        upper Limit
        8.08
        value
        6.94
      2. group Id
        OG001
        lower Limit
        9.91
        upper Limit
        12.8
        value
        11.2
      3. group Id
        OG002
        lower Limit
        10.7
        upper Limit
        14.6
        value
        12.5
denoms
  1. counts
    1. group Id
      OG000
      value
      33
    2. group Id
      OG001
      value
      38
    3. group Id
      OG002
      value
      19
    units
    Participants
description
Single PK samples were collected at each visit during Part 1 Weeks 2, 4, 6, 8, 10, 12 and at each weekly or monthly visit during Part 2 Weeks 1-12 (Study Weeks 13-37). The concentration data were pooled across visits to identify population PK and variability parameter estimates and covariate effects. Cmax is defined as the maximum observed concentration. The Cmax for a 50mg dose was estimated for each cohort. From the final model, a single value of each PK parameter was estimated for each subject, and geometric mean (95% CI) values are presented for each cohort for a 50mg dose.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants who received eltrombopag in Part 1 continued on the same dose in Part 2 unless adjustments were warranted according to the dosing guidelines. Participants who received placebo in Part 1 received Eltrombopag as per age criteria as follows:body weight \<27 kg received eltrombopag 37.5 mg QD, and those with a body weight \>=27 kg received eltrombopag 50 mg QD. Participants of East Asian ancestry received a starting dose of eltrombopag 25 mg QD.
    id
    OG000
    title
    Eltrombopag Cohort 1 (12-17 Years)
  2. description
    Participants who received eltrombopag in Part 1 continued on the same dose in Part 2 unless adjustments were warranted according to the dosing guidelines. Participants who received placebo in Part 1 received Eltrombopag as per age criteria as follows: body weight \<27 kg received eltrombopag 37.5 mg QD, and those with a body weight \>=27 kg received eltrombopag 50 mg QD. Participants of East Asian ancestry received a starting dose of eltrombopag 25 mg QD.
    id
    OG001
    title
    Eltrombopag Cohort 2 (6-11 Years)
  3. description
    Participants who received eltrombopag in Part 1 continued on the same dose in Part 2 unless adjustments were warranted according to the dosing guidelines. Participants who received placebo in Part 1 received Eltrombopag 1.2 mg/kg QD and; participants of East Asian ancestry received a starting dose of eltrombopag 0.8 mg/kg/day.
    id
    OG002
    title
    Eltrombopag Cohort 3 (1-5 Years)
param Type
GEOMETRIC_MEAN
population Description
PK Population. Only those participants who provided pharmacokinetic samples were analyzed
reporting Status
POSTED
time Frame
Part 1 Weeks 2, 4, 6, 8, 10, 12, and Part 2 Weeks 1-12 (Study Weeks 13 - 37)
title
Pharmacokinetic (PK) Assessments for Eltrombopag for Cmax
type
SECONDARY
unit Of Measure
micrograms per milliliter (ug/mL)

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

Preserved source evidence · Not medical advice