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NCT04537715 · OUTCOME

Part 1: Area Under the Plasma Concentration-Time Curve From Time 0 to 12 Hours of Quantifiable Concentration (AUC0-12h) of Tazemetostat

Effects of Itraconazole and Rifampin on the Blood Tazemetostat Levels · Source last updated 2025-02-19

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

Measure
GEOMETRIC_MEAN
Unit
hours*nanogram/milliliter (h*ng/mL)
Interval / dispersion
Geometric Coefficient of Variation
Time frame
Pre-dose (0 hour), 0.5, 1, 1.5, 2, 4, 6, 8, and 12 hours post-dose on Cycle 1 Day 1 and Cycle 1 Day 15

What was measured

Blood samples were collected at specified timepoints. AUC0-12h was assessed using non-compartmental data analysis method. AUC0-12h was estimated by a combination of linear trapezoidal method on concentrations going up and logarithmic trapezoidal method on concentrations going down (Linear up/Log down method).

Analysis population: The Pharmacokinetic (PK) population included all participants who had sufficient PK concentration data to calculate steady-state PK parameters in Part 1 and did not have any major protocol deviation that was deemed to greatly alter the steady-state exposure to tazemetostat or itraconazole.

Groups in this outcome

Part 1: Tazemetostat

Participants received a single oral dose of 400 mg tazemetostat on Cycle 1 Day 1, BID dose of tazemetostat 400 mg on Days 3 to 14 and single dose of tazemetostat 400 mg on Day 15. From Days 21 to 35, they received a 400 mg BID dose of tazemetostat. On Cycle 1 Day 36, they received a single dose of 400 mg tazemetostat. Participants continued to receive tazemetostat treatment at the recommended therapeutic dose (oral 800 mg tazemetostat BID), from Day 40 (Cycle 2 Day 1) for each subsequent cycle of 28-day duration until Investigator assessed clinical progression per standard practice, unacceptable treatment related toxicity/withdrawal; survival follow-up (until death/study closure).

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

Analysis denominator · Participants

GroupSource count
Part 1: Tazemetostat16

Reported measurements

Cycle 1 Day 1
Values in hours*nanogram/milliliter (h*ng/mL) · Interval/dispersion: Geometric Coefficient of Variation
GroupValueSpreadLowerUpperComment
Part 1: Tazemetostat218055.3Not reportedNot reportedNot reported
Cycle 1 Day 15
Values in hours*nanogram/milliliter (h*ng/mL) · Interval/dispersion: Geometric Coefficient of Variation
GroupValueSpreadLowerUpperComment
Part 1: Tazemetostat183037.6Not reportedNot reportedNot reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        spread
        55.3
        value
        2180
    title
    Cycle 1 Day 1
  2. categories
    1. measurements
      1. group Id
        OG000
        spread
        37.6
        value
        1830
    title
    Cycle 1 Day 15
denoms
  1. counts
    1. group Id
      OG000
      value
      16
    units
    Participants
description
Blood samples were collected at specified timepoints. AUC0-12h was assessed using non-compartmental data analysis method. AUC0-12h was estimated by a combination of linear trapezoidal method on concentrations going up and logarithmic trapezoidal method on concentrations going down (Linear up/Log down method).
dispersion Type
Geometric Coefficient of Variation
groups
  1. description
    Participants received a single oral dose of 400 mg tazemetostat on Cycle 1 Day 1, BID dose of tazemetostat 400 mg on Days 3 to 14 and single dose of tazemetostat 400 mg on Day 15. From Days 21 to 35, they received a 400 mg BID dose of tazemetostat. On Cycle 1 Day 36, they received a single dose of 400 mg tazemetostat. Participants continued to receive tazemetostat treatment at the recommended therapeutic dose (oral 800 mg tazemetostat BID), from Day 40 (Cycle 2 Day 1) for each subsequent cycle of 28-day duration until Investigator assessed clinical progression per standard practice, unacceptable treatment related toxicity/withdrawal; survival follow-up (until death/study closure).
    id
    OG000
    title
    Part 1: Tazemetostat
param Type
GEOMETRIC_MEAN
population Description
The Pharmacokinetic (PK) population included all participants who had sufficient PK concentration data to calculate steady-state PK parameters in Part 1 and did not have any major protocol deviation that was deemed to greatly alter the steady-state exposure to tazemetostat or itraconazole.
reporting Status
POSTED
time Frame
Pre-dose (0 hour), 0.5, 1, 1.5, 2, 4, 6, 8, and 12 hours post-dose on Cycle 1 Day 1 and Cycle 1 Day 15
title
Part 1: Area Under the Plasma Concentration-Time Curve From Time 0 to 12 Hours of Quantifiable Concentration (AUC0-12h) of Tazemetostat
type
PRIMARY
unit Of Measure
hours*nanogram/milliliter (h*ng/mL)

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Preserved source evidence · Not medical advice