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NCT01915498 · OUTCOME

Phase 1: Apparent Terminal Phase Half-life (t½) of Enasidenib After a Single Oral Dose on Day -3

Phase 1/2 Study of Enasidenib (AG-221) in Adults With Advanced Hematologic Malignancies With an Isocitrate Dehydrogenase Isoform 2 (IDH2) Mutation · Source last updated 2024-10-22

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

Measure
GEOMETRIC_MEAN
Unit
hours
Interval / dispersion
Geometric Coefficient of Variation
Time frame
Day -3 prior to the single dose of enasidenib and at 0.5, 1, 2, 3, 4, 6, 8, 10, 24, 48, and 72 hours post-dose.

What was measured

The first 3 participants enrolled in each cohort of the dose escalation phase and the first 15 participants enrolled in each arm of Phase 1 Expansion received a single dose of enasidenib three days prior to starting the 28-day dosing regimen (Day -3). Plasma enasidenib was measured using validated liquid chromatography-mass spectrometry methods (LC-MS/MS). The lower limit of quantification (LLOQ) in plasma was 1.00 ng/mL. T1/2 was not calculated when the terminal elimination rate constant (λz) was not estimable.

Analysis population: Participants who received 1 dose of enasidenib on Day -3 with sufficient data to determine PK parameters. Participants who received 2 doses on Day -3 or who received the incorrect dose were excluded. Participants in the Phase 1 Escalation BID and QD and Phase 1 Expansion cohorts were were grouped by dose for Day -3 analyses.

Groups in this outcome

Enasidenib 30 mg

Participants received a single oral dose of enasidenib 30 mg on Day -3.

Enasidenib 50 mg

Participants received a single oral dose of enasidenib 50 mg on Day -3.

Enasidenib 75 mg

Participants received a single oral dose of enasidenib 75 mg on Day -3.

Enasidenib 100 mg

Participants received a single oral dose of enasidenib 100 mg on Day -3.

Enasidenib 150 mg

Participants received a single oral dose of enasidenib 150 mg on Day -3.

Enasidenib 200 mg

Participants received a single oral dose of enasidenib 200 mg on Day -3.

Enasidenib 300 mg

Participants received a single oral dose of enasidenib 300 mg on Day -3.

Enasidenib 450 mg

Participants received a single oral dose of enasidenib 450 mg on Day -3.

Enasidenib 650 mg

Participants received a single oral dose of enasidenib 650 mg on Day -3.

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

Analysis denominator · Participants

GroupSource count
Enasidenib 30 mg3
Enasidenib 50 mg8
Enasidenib 75 mg7
Enasidenib 100 mg29
Enasidenib 150 mg5
Enasidenib 200 mg3
Enasidenib 300 mg2
Enasidenib 450 mg0
Enasidenib 650 mg0

Reported measurements

Source class 1
Values in hours · Interval/dispersion: Geometric Coefficient of Variation
GroupValueSpreadLowerUpperComment
Enasidenib 30 mg33.2124.6Not reportedNot reportedNot reported
Enasidenib 50 mg36.857.3Not reportedNot reportedNot reported
Enasidenib 75 mg52.6109.5Not reportedNot reportedNot reported
Enasidenib 100 mg65.986.5Not reportedNot reportedNot reported
Enasidenib 150 mg96.260.1Not reportedNot reportedNot reported
Enasidenib 200 mg73.818.8Not reportedNot reportedNot reported
Enasidenib 300 mg91.3NANot reportedNot reportedPercent coefficient of variation could not be calculated due to small sample size
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        spread
        124.6
        value
        33.2
      2. group Id
        OG001
        spread
        57.3
        value
        36.8
      3. group Id
        OG002
        spread
        109.5
        value
        52.6
      4. group Id
        OG003
        spread
        86.5
        value
        65.9
      5. group Id
        OG004
        spread
        60.1
        value
        96.2
      6. group Id
        OG005
        spread
        18.8
        value
        73.8
      7. comment
        Percent coefficient of variation could not be calculated due to small sample size
        group Id
        OG006
        spread
        NA
        value
        91.3
denoms
  1. counts
    1. group Id
      OG000
      value
      3
    2. group Id
      OG001
      value
      8
    3. group Id
      OG002
      value
      7
    4. group Id
      OG003
      value
      29
    5. group Id
      OG004
      value
      5
    6. group Id
      OG005
      value
      3
    7. group Id
      OG006
      value
      2
    8. group Id
      OG007
      value
      0
    9. group Id
      OG008
      value
      0
    units
    Participants
description
The first 3 participants enrolled in each cohort of the dose escalation phase and the first 15 participants enrolled in each arm of Phase 1 Expansion received a single dose of enasidenib three days prior to starting the 28-day dosing regimen (Day -3). Plasma enasidenib was measured using validated liquid chromatography-mass spectrometry methods (LC-MS/MS). The lower limit of quantification (LLOQ) in plasma was 1.00 ng/mL. T1/2 was not calculated when the terminal elimination rate constant (λz) was not estimable.
dispersion Type
Geometric Coefficient of Variation
groups
  1. description
    Participants received a single oral dose of enasidenib 30 mg on Day -3.
    id
    OG000
    title
    Enasidenib 30 mg
  2. description
    Participants received a single oral dose of enasidenib 50 mg on Day -3.
    id
    OG001
    title
    Enasidenib 50 mg
  3. description
    Participants received a single oral dose of enasidenib 75 mg on Day -3.
    id
    OG002
    title
    Enasidenib 75 mg
  4. description
    Participants received a single oral dose of enasidenib 100 mg on Day -3.
    id
    OG003
    title
    Enasidenib 100 mg
  5. description
    Participants received a single oral dose of enasidenib 150 mg on Day -3.
    id
    OG004
    title
    Enasidenib 150 mg
  6. description
    Participants received a single oral dose of enasidenib 200 mg on Day -3.
    id
    OG005
    title
    Enasidenib 200 mg
  7. description
    Participants received a single oral dose of enasidenib 300 mg on Day -3.
    id
    OG006
    title
    Enasidenib 300 mg
  8. description
    Participants received a single oral dose of enasidenib 450 mg on Day -3.
    id
    OG007
    title
    Enasidenib 450 mg
  9. description
    Participants received a single oral dose of enasidenib 650 mg on Day -3.
    id
    OG008
    title
    Enasidenib 650 mg
param Type
GEOMETRIC_MEAN
population Description
Participants who received 1 dose of enasidenib on Day -3 with sufficient data to determine PK parameters. Participants who received 2 doses on Day -3 or who received the incorrect dose were excluded. Participants in the Phase 1 Escalation BID and QD and Phase 1 Expansion cohorts were were grouped by dose for Day -3 analyses.
reporting Status
POSTED
time Frame
Day -3 prior to the single dose of enasidenib and at 0.5, 1, 2, 3, 4, 6, 8, 10, 24, 48, and 72 hours post-dose.
title
Phase 1: Apparent Terminal Phase Half-life (t½) of Enasidenib After a Single Oral Dose on Day -3
type
SECONDARY
unit Of Measure
hours

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

Preserved source evidence · Not medical advice