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NCT04537715 · OUTCOME

Part 2: Cmax 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
ng/mL
Interval / dispersion
Geometric Coefficient of Variation
Time frame
Pre-dose (0 hour), 0.5, 1, 1.5, 2, 4, 6, 8, 12, 24, 36, and 48 hours post-dose on Cycle 1 Day 1 and Cycle 1 Day 15

What was measured

Blood samples were collected at specified timepoints. Cmax was assessed using non-compartmental data analysis method.

Analysis population: The PK population included all participants who had sufficient PK concentration data to calculate steady-state PK parameters in Part 2 and did not have any major protocol deviation that was deemed to greatly alter the steady-state exposure to tazemetostat or rifampin.

Groups in this outcome

Part 2: Tazemetostat

Participants received a single oral dose of 800 mg tazemetostat on Cycle 1 Day 1, BID dose of 800 mg of tazemetostat from Days 3 to 14 and a single oral dose of 800 mg tazemetostat on Day 15. From Days 17 to 23, they received an 800 mg BID dose of tazemetostat. On Day 24, subjects received a single dose of 800 mg tazemetostat. Participants continued to receive tazemetostat treatment at the recommended therapeutic dose (oral 800 mg tazemetostat BID), from Day 27 (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 2: Tazemetostat16

Reported measurements

Cycle 1 Day 1
Values in ng/mL · Interval/dispersion: Geometric Coefficient of Variation
GroupValueSpreadLowerUpperComment
Part 2: Tazemetostat133067.4Not reportedNot reportedNot reported
Cycle 1 Day 15
Values in ng/mL · Interval/dispersion: Geometric Coefficient of Variation
GroupValueSpreadLowerUpperComment
Part 2: Tazemetostat110078.7Not reportedNot reportedNot reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        spread
        67.4
        value
        1330
    title
    Cycle 1 Day 1
  2. categories
    1. measurements
      1. group Id
        OG000
        spread
        78.7
        value
        1100
    title
    Cycle 1 Day 15
denoms
  1. counts
    1. group Id
      OG000
      value
      16
    units
    Participants
description
Blood samples were collected at specified timepoints. Cmax was assessed using non-compartmental data analysis method.
dispersion Type
Geometric Coefficient of Variation
groups
  1. description
    Participants received a single oral dose of 800 mg tazemetostat on Cycle 1 Day 1, BID dose of 800 mg of tazemetostat from Days 3 to 14 and a single oral dose of 800 mg tazemetostat on Day 15. From Days 17 to 23, they received an 800 mg BID dose of tazemetostat. On Day 24, subjects received a single dose of 800 mg tazemetostat. Participants continued to receive tazemetostat treatment at the recommended therapeutic dose (oral 800 mg tazemetostat BID), from Day 27 (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 2: Tazemetostat
param Type
GEOMETRIC_MEAN
population Description
The PK population included all participants who had sufficient PK concentration data to calculate steady-state PK parameters in Part 2 and did not have any major protocol deviation that was deemed to greatly alter the steady-state exposure to tazemetostat or rifampin.
reporting Status
POSTED
time Frame
Pre-dose (0 hour), 0.5, 1, 1.5, 2, 4, 6, 8, 12, 24, 36, and 48 hours post-dose on Cycle 1 Day 1 and Cycle 1 Day 15
title
Part 2: Cmax of Tazemetostat
type
PRIMARY
unit Of Measure
ng/mL

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Preserved source evidence · Not medical advice