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NCT04537715 · OUTCOME

Part 1: T1/2 of Tazemetostat and EPZ-6930 After Tazemetostat at Steady-State With Itraconazole

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
MEDIAN
Unit
hour
Interval / dispersion
Full Range
Time frame
Pre-dose (0 hour), 0.5, 1, 1.5, 2, 4, 6, 8, 12, 36, and 72 hours post-dose on Cycle 1 Day 36

What was measured

Blood samples were collected at specified timepoints. T1/2 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 1 and did not have any major protocol deviation that was deemed to greatly alter the steady-state exposure to tazemetostat or itraconazole. Only data from the participants analyzed were reported.

Groups in this outcome

Part 1: Tazemetostat + Itraconazole

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. A single oral dose of 200 mg itraconazole was administered daily from Day 18 to Day 20. From Days 21 to 35, they received a 400 mg BID dose of tazemetostat co-administered with a single dose of oral 200 mg itraconazole. Itraconazole was also administered on Days 37 and 38 as a single oral 200 mg daily dose. On Cycle 1 Day 36, they received a single dose of 400 mg tazemetostat co-administered with a single dose of oral 200 mg itraconazole. 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: Tazemetostat + Itraconazole16

Reported measurements

Tazemetostat

Analysis denominator · Participants

GroupSource count
Part 1: Tazemetostat + Itraconazole15
Values in hour · Interval/dispersion: Full Range
GroupValueSpreadLowerUpperComment
Part 1: Tazemetostat + Itraconazole12.8Not reported6.4022.0Not reported
EPZ-6930

Analysis denominator · Participants

GroupSource count
Part 1: Tazemetostat + Itraconazole16
Values in hour · Interval/dispersion: Full Range
GroupValueSpreadLowerUpperComment
Part 1: Tazemetostat + Itraconazole13.9Not reported7.1921.6Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        6.40
        upper Limit
        22.0
        value
        12.8
    denoms
    1. counts
      1. group Id
        OG000
        value
        15
      units
      Participants
    title
    Tazemetostat
  2. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        7.19
        upper Limit
        21.6
        value
        13.9
    denoms
    1. counts
      1. group Id
        OG000
        value
        16
      units
      Participants
    title
    EPZ-6930
denoms
  1. counts
    1. group Id
      OG000
      value
      16
    units
    Participants
description
Blood samples were collected at specified timepoints. T1/2 was assessed using non-compartmental data analysis method.
dispersion Type
Full Range
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. A single oral dose of 200 mg itraconazole was administered daily from Day 18 to Day 20. From Days 21 to 35, they received a 400 mg BID dose of tazemetostat co-administered with a single dose of oral 200 mg itraconazole. Itraconazole was also administered on Days 37 and 38 as a single oral 200 mg daily dose. On Cycle 1 Day 36, they received a single dose of 400 mg tazemetostat co-administered with a single dose of oral 200 mg itraconazole. 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 + Itraconazole
param Type
MEDIAN
population Description
The 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. Only data from the participants analyzed were reported.
reporting Status
POSTED
time Frame
Pre-dose (0 hour), 0.5, 1, 1.5, 2, 4, 6, 8, 12, 36, and 72 hours post-dose on Cycle 1 Day 36
title
Part 1: T1/2 of Tazemetostat and EPZ-6930 After Tazemetostat at Steady-State With Itraconazole
type
SECONDARY
unit Of Measure
hour

Download exact source JSON → · Snapshot ctgov-results-25a395029948b04d52b1253f

Preserved source evidence · Not medical advice