Trial Outcomes & Findings for Open-Label, Multicenter, Two-Part, Phase 1 Study to Characterize Effects of a Moderate CYP3A Inhibitor on PK of Tazemetostat, Effects of Tazemetostat on PK of CYP2C8 and CYP2C19 Substrates, and Effect of Increased Gastric pH on PK of Tazemetostat in B-cell Lymphoma or Advanced Solid Tumor Patients (NCT NCT03028103)

NCT ID: NCT03028103

Last Updated: 2023-06-26

Results Overview

Recruitment status

COMPLETED

Study phase

PHASE1

Target enrollment

32 participants

Primary outcome timeframe

Days 15 and 19, 0 to 8 hours post-dose

Results posted on

2023-06-26

Participant Flow

Participant milestones

Participant milestones
Measure
Part A
Subjects enrolled in Part A received treatment with oral tazemetostat tablets 400 mg twice daily for 24 days beginning on Day 1. Blood samples for the analysis of plasma tazemetostat and its metabolites concentrations were collected predose and over 8 hours after the morning dose of tazemetostat on Day 15. Subjects received fluconazole 400 mg once daily for 4 days starting on Day 16. On Day 19, blood samples for the analysis of plasma tazemetostat, its metabolites, and fluconazole were collected predose and over 8 hours after the morning tazemetostat dose. Tazemetostat 400 mg twice daily continued through Day 24. Subjects then received tazemetostat 800 mg twice daily starting on Day 25.
Part B
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Overall Study
STARTED
16
16
Overall Study
COMPLETED
16
16
Overall Study
NOT COMPLETED
0
0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Open-Label, Multicenter, Two-Part, Phase 1 Study to Characterize Effects of a Moderate CYP3A Inhibitor on PK of Tazemetostat, Effects of Tazemetostat on PK of CYP2C8 and CYP2C19 Substrates, and Effect of Increased Gastric pH on PK of Tazemetostat in B-cell Lymphoma or Advanced Solid Tumor Patients

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Part A
n=16 Participants
Subjects enrolled in Part A received treatment with oral tazemetostat tablets 400 mg twice daily for 24 days beginning on Day 1. Blood samples for the analysis of plasma tazemetostat and its metabolites concentrations were collected predose and over 8 hours after the morning dose of tazemetostat on Day 15. Subjects received fluconazole 400 mg once daily for 4 days starting on Day 16. On Day 19, blood samples for the analysis of plasma tazemetostat, its metabolites, and fluconazole were collected predose and over 8 hours after the morning tazemetostat dose. Tazemetostat 400 mg twice daily continued through Day 24. Subjects then received tazemetostat 800 mg twice daily starting on Day 25.
Part B
n=16 Participants
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Total
n=32 Participants
Total of all reporting groups
Age, Categorical
<=18 years
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Age, Categorical
Between 18 and 65 years
9 Participants
n=5 Participants
11 Participants
n=7 Participants
20 Participants
n=5 Participants
Age, Categorical
>=65 years
7 Participants
n=5 Participants
5 Participants
n=7 Participants
12 Participants
n=5 Participants
Age, Continuous
62.9 Years
STANDARD_DEVIATION 15.10 • n=5 Participants
48.8 Years
STANDARD_DEVIATION 17.75 • n=7 Participants
55.8 Years
STANDARD_DEVIATION 17.73 • n=5 Participants
Sex: Female, Male
Female
10 Participants
n=5 Participants
7 Participants
n=7 Participants
17 Participants
n=5 Participants
Sex: Female, Male
Male
6 Participants
n=5 Participants
9 Participants
n=7 Participants
15 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants
n=5 Participants
2 Participants
n=7 Participants
3 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
15 Participants
n=5 Participants
13 Participants
n=7 Participants
28 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
1 Participants
n=7 Participants
1 Participants
n=5 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Asian
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Black or African American
2 Participants
n=5 Participants
4 Participants
n=7 Participants
6 Participants
n=5 Participants
Race (NIH/OMB)
White
14 Participants
n=5 Participants
12 Participants
n=7 Participants
26 Participants
n=5 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Region of Enrollment
United States
16 Participants
n=5 Participants
16 Participants
n=7 Participants
32 Participants
n=5 Participants
Baseline Disease Characteristics and Prior Therapies
Lymphoma
10 Participants
n=5 Participants
3 Participants
n=7 Participants
13 Participants
n=5 Participants
Baseline Disease Characteristics and Prior Therapies
Advanced Solid tumors
6 Participants
n=5 Participants
13 Participants
n=7 Participants
19 Participants
n=5 Participants
Baseline Disease Characteristics and Prior Therapies
Stage at diagnosis: I
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Baseline Disease Characteristics and Prior Therapies
Stage at diagnosis: II
1 Participants
n=5 Participants
1 Participants
n=7 Participants
2 Participants
n=5 Participants
Baseline Disease Characteristics and Prior Therapies
Stage at diagnosis: III
5 Participants
n=5 Participants
3 Participants
n=7 Participants
8 Participants
n=5 Participants
Baseline Disease Characteristics and Prior Therapies
Stage at diagnosis: IV
8 Participants
n=5 Participants
10 Participants
n=7 Participants
18 Participants
n=5 Participants
Baseline Disease Characteristics and Prior Therapies
Stage at diagnosis: Unknown
2 Participants
n=5 Participants
2 Participants
n=7 Participants
4 Participants
n=5 Participants
Baseline Disease Characteristics and Prior Therapies
Progressive disease prior to study entry
16 Participants
n=5 Participants
16 Participants
n=7 Participants
32 Participants
n=5 Participants

PRIMARY outcome

Timeframe: Days 15 and 19, 0 to 8 hours post-dose

Outcome measures

Outcome measures
Measure
Part A
n=14 Participants
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Part A: Effect of CYP3A Inhibition by Fluconazole on the PK of Tazemetostat (AUC0-t, AUC0-8)
Part: A; Day 15; Treatment: Tazemetostat Alone; Analyte: EPZ-6438
1340 h*ng/mL
Standard Deviation 1180
Part A: Effect of CYP3A Inhibition by Fluconazole on the PK of Tazemetostat (AUC0-t, AUC0-8)
Part: A; Day 19; Treatment: Tazemetostat with Fluconazole; Analyte: EPZ-6438
4100 h*ng/mL
Standard Deviation 2680

PRIMARY outcome

Timeframe: Days 15 and 19, 0 to 8 hours post-dose

Outcome measures

Outcome measures
Measure
Part A
n=14 Participants
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Part A: Cmax of Tazemetostat During Co-administration With Fluconazole
Part: A; Day 15; Treatment: Tazemetostat Alone; Analyte: EPZ-6438
426 ng/mL
Standard Deviation 337
Part A: Cmax of Tazemetostat During Co-administration With Fluconazole
Part: A; Day 19; Treatment: Tazemetostat with Fluconazole; Analyte: EPZ-6438
968 ng/mL
Standard Deviation 801

PRIMARY outcome

Timeframe: Days 1 and 16, 0 to 8 hours post-dose

Population: In Part B, 13 subjects completed taking omeprazole and repaglinide on Day 1, with tazemetostat on Day 16 and 11 subjects completed taking tazemetostat alone on Day 19.

Outcome measures

Outcome measures
Measure
Part A
n=13 Participants
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Part B: The Potential of Tazemetostat to Inhibit or Induce CYP2C8 Using Repaglinide as a Probe Substrate (AUC0-t, AUC0-∞)
Part: B; Day 1; Treatment: Repaglinide Alone; Analyte: Repaglinide - AUC(0-t)
8.16 h*ng/mL
Standard Deviation 13.7
Part B: The Potential of Tazemetostat to Inhibit or Induce CYP2C8 Using Repaglinide as a Probe Substrate (AUC0-t, AUC0-∞)
Part: B; Day 16; Treatment: Repaglinide with Tazemetostat; Analyte: Repaglinide - AUC(0-t)
14.7 h*ng/mL
Standard Deviation 15.1
Part B: The Potential of Tazemetostat to Inhibit or Induce CYP2C8 Using Repaglinide as a Probe Substrate (AUC0-t, AUC0-∞)
Part: B; Day 1; Treatment: Repaglinide Alone; Analyte: Repaglinide - AUC(0-∞)
12.7 h*ng/mL
Standard Deviation 19.4
Part B: The Potential of Tazemetostat to Inhibit or Induce CYP2C8 Using Repaglinide as a Probe Substrate (AUC0-t, AUC0-∞)
Part: B; Day 16; Treatment: Repaglinide with Tazemetostat; Analyte: Repaglinide - AUC(0-∞)
17 h*ng/mL
Standard Deviation 15.7

PRIMARY outcome

Timeframe: Days 1 and 16, 0 to 8 hours post-dose

Population: In Part B, 13 subjects completed taking omeprazole and repaglinide on Day 1, with tazemetostat on Day 16 and 11 subjects completed taking tazemetostat alone on Day 19.

Outcome measures

Outcome measures
Measure
Part A
n=13 Participants
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Part B: Cmax of Repaglinide During Co-administration With Tazemetostat
Part: B; Day 1; Treatment: Repaglinide Alone; Analyte: Repaglinide
5.14 ng/mL
Standard Deviation 8.28
Part B: Cmax of Repaglinide During Co-administration With Tazemetostat
Part: B; Day 16; Treatment: Repaglinide with Tazemetostat; Analyte: Repaglinide
7.75 ng/mL
Standard Deviation 8.73

PRIMARY outcome

Timeframe: Days 1 and 16, 0 to 8 hours post-dose

Population: In Part B, 13 subjects completed taking omeprazole and repaglinide on Day 1, with tazemetostat on Day 16 and 11 subjects completed taking tazemetostat alone on Day 19.

Outcome measures

Outcome measures
Measure
Part A
n=13 Participants
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Part B: The Potential of Tazemetostat to Inhibit or Induce CYP2C19 Using Omeprazole as Probe a Substrate (AUC0-t, AUC0-∞)
Part: B; Day 1; Treatment: Omeprazole Alone; Analyte: Omeprazole - AUC(0-t)
600 h*ng/mL
Standard Deviation 1600
Part B: The Potential of Tazemetostat to Inhibit or Induce CYP2C19 Using Omeprazole as Probe a Substrate (AUC0-t, AUC0-∞)
Part: B; Day 16; Treatment: Omeprazole with Tazemetostat; Analyte: Omeprazole - AUC(0-t)
480 h*ng/mL
Standard Deviation 837
Part B: The Potential of Tazemetostat to Inhibit or Induce CYP2C19 Using Omeprazole as Probe a Substrate (AUC0-t, AUC0-∞)
Part: B; Day 1; Treatment: Omeprazole Alone; Analyte: Omeprazole - AUC(0-∞)
672 h*ng/mL
Standard Deviation 463
Part B: The Potential of Tazemetostat to Inhibit or Induce CYP2C19 Using Omeprazole as Probe a Substrate (AUC0-t, AUC0-∞)
Part: B; Day 16; Treatment: Omeprazole with Tazemetostat; Analyte: Omeprazole - AUC(0-∞)
1120 h*ng/mL
Standard Deviation 1530

PRIMARY outcome

Timeframe: Days 1 and 16, 0 to 8 hours post-dose

Population: In Part B, 13 subjects completed taking omeprazole and repaglinide on Day 1, with tazemetostat on Day 16 and 11 subjects completed taking tazemetostat alone on Day 19.

Outcome measures

Outcome measures
Measure
Part A
n=13 Participants
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Part B: Cmax of Omeprazole During Co-administration With Tazemetostat
Part: B; Day 1; Treatment: Omeprazole Alone; Analyte: Omeprazole
253 ng/mL
Standard Deviation 462
Part B: Cmax of Omeprazole During Co-administration With Tazemetostat
Part: B; Day 16; Treatment: Omeprazole with Tazemetostat; Analyte: Omeprazole
207 ng/mL
Standard Deviation 275

PRIMARY outcome

Timeframe: Days 16 and 19, 0 to 8 hours post-dose

Population: In Part B, 13 subjects completed taking omeprazole and repaglinide on Day 1, with tazemetostat on Day 16 and 11 subjects completed taking tazemetostat alone on Day 19.

Outcome measures

Outcome measures
Measure
Part A
n=13 Participants
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Part B: Effect of Increased Gastric pH by Omeprazole on the PK of Tazemetostat (AUC0-t, AUC0-8)
Part: B; Day 16; Treatment: Omeprazole with Tazemetostat; Analyte: EPZ-6438 - AUC(0-t)
1780 h*ng/mL
Standard Deviation 2010
Part B: Effect of Increased Gastric pH by Omeprazole on the PK of Tazemetostat (AUC0-t, AUC0-8)
Part: B; Day 19; Treatment: Tazemetostat Alone; Analyte: EPZ-6438 - AUC(0-t)
2150 h*ng/mL
Standard Deviation 1030

PRIMARY outcome

Timeframe: Days 16 and 19, 0 to 8 hours post-dose

Population: In Part B, 13 subjects completed taking omeprazole and repaglinide on Day 1, with tazemetostat on Day 16 and 11 subjects completed taking tazemetostat alone on Day 19.

Outcome measures

Outcome measures
Measure
Part A
n=13 Participants
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Part B: Cmax of Tazemetostat During Co-administration With Omeprazole
Part: B; Day 16; Treatment: Omeprazole with Tazemetostat; Analyte: EPZ-6438
521 ng/mL
Standard Deviation 627
Part B: Cmax of Tazemetostat During Co-administration With Omeprazole
Part: B; Day 19; Treatment: Tazemetostat Alone; Analyte: EPZ-6438
641 ng/mL
Standard Deviation 404

SECONDARY outcome

Timeframe: From the first dose of study treatment until the earlier of either 30 days after the discontinuation of study treatment or until the initiation of subsequent anticancer therapy, up to 2 years.

Outcome measures

Outcome measures
Measure
Part A
n=16 Participants
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
n=16 Participants
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Incidence of Treatment-emergent Adverse Events as a Measure of Safety
Any TEAE
12 Participants
14 Participants
Incidence of Treatment-emergent Adverse Events as a Measure of Safety
Any TEAE Grade 3 or 4
7 Participants
8 Participants
Incidence of Treatment-emergent Adverse Events as a Measure of Safety
Any Treatment-Related TEAE
9 Participants
10 Participants
Incidence of Treatment-emergent Adverse Events as a Measure of Safety
Any Treatment-Related TEAE Grade 3 or 4
4 Participants
3 Participants
Incidence of Treatment-emergent Adverse Events as a Measure of Safety
Any TEAE Leading to Dose Reduction
2 Participants
2 Participants
Incidence of Treatment-emergent Adverse Events as a Measure of Safety
Any TEAE Leading to Study Drug Interruption
3 Participants
6 Participants
Incidence of Treatment-emergent Adverse Events as a Measure of Safety
Any TEAE Leading to Study Drug Discontinuation
0 Participants
0 Participants
Incidence of Treatment-emergent Adverse Events as a Measure of Safety
Any TESAE
4 Participants
6 Participants
Incidence of Treatment-emergent Adverse Events as a Measure of Safety
Any Treatment-Related TESAE
1 Participants
0 Participants
Incidence of Treatment-emergent Adverse Events as a Measure of Safety
Any Protocol Defined AE of Special Interest
0 Participants
0 Participants

SECONDARY outcome

Timeframe: Days 15 and 19, 0 to 8 hours post-dose

Outcome measures

Outcome measures
Measure
Part A
n=14 Participants
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Part A: PK of Tazemetostat and Its Metabolites After Administration Alone and With Fluconazole (AUC0-t, AUC0-8)
Part: A; Day 15; Treatment: Tazemetostat Alone; Analyte: EPZ-6930 (ER-897387)
2590 h*ng/mL
Standard Deviation 1200
Part A: PK of Tazemetostat and Its Metabolites After Administration Alone and With Fluconazole (AUC0-t, AUC0-8)
Part: A; Day 19; Treatment: Tazemetostat with Fluconazole; Analyte: EPZ-6930 (ER-897387)
2860 h*ng/mL
Standard Deviation 1600
Part A: PK of Tazemetostat and Its Metabolites After Administration Alone and With Fluconazole (AUC0-t, AUC0-8)
Part: A; Day 15; Treatment: Tazemetostat Alone; Analyte: EPZ006931
770 h*ng/mL
Standard Deviation 630
Part A: PK of Tazemetostat and Its Metabolites After Administration Alone and With Fluconazole (AUC0-t, AUC0-8)
Part: A; Day 19; Treatment: Tazemetostat with Fluconazole; Analyte: EPZ006931
921 h*ng/mL
Standard Deviation 780
Part A: PK of Tazemetostat and Its Metabolites After Administration Alone and With Fluconazole (AUC0-t, AUC0-8)
Part: A; Day 15; Treatment: Tazemetostat Alone; Analyte: EPZ034163
276 h*ng/mL
Standard Deviation 415
Part A: PK of Tazemetostat and Its Metabolites After Administration Alone and With Fluconazole (AUC0-t, AUC0-8)
Part: A; Day 19; Treatment: Tazemetostat with Fluconazole; Analyte: EPZ034163
295 h*ng/mL
Standard Deviation 430

SECONDARY outcome

Timeframe: Days 15 and 19, 0 to 8 hours post-dose

Outcome measures

Outcome measures
Measure
Part A
n=14 Participants
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Part A: Tmax of Tazemetostat After Administration Alone and With Fluconazole
Part: A; Day 15; Treatment: Tazemetostat Alone; Analyte: EPZ-6438
1.13 hours
Standard Deviation 0.87
Part A: Tmax of Tazemetostat After Administration Alone and With Fluconazole
Part: A; Day 19; Treatment: Tazemetostat with Fluconazole; Analyte: EPZ-6438
2 hours
Standard Deviation 0.84

SECONDARY outcome

Timeframe: Days 15 and 19, 0 to 8 hours post-dose

Outcome measures

Outcome measures
Measure
Part A
n=14 Participants
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Part A: t1/2 of Tazemetostat After Administration Alone and With Fluconazole
Part: A; Day 15; Treatment: Tazemetostat Alone; Analyte: EPZ-6438
2.88 hours
Standard Deviation 0.491
Part A: t1/2 of Tazemetostat After Administration Alone and With Fluconazole
Part: A; Day 19; Treatment: Tazemetostat with Fluconazole; Analyte: EPZ-6438
3.56 hours
Standard Deviation 0.453

SECONDARY outcome

Timeframe: Days 15 and 19, 0 to 8 hours post-dose

Outcome measures

Outcome measures
Measure
Part A
n=14 Participants
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Part A: Cmax of Tazemetostat Metabolites After Administration Alone and With Fluconazole
Part: A; Day 15; Treatment: Tazemetostat Alone; Analyte: EPZ-6930 (ER-897387)
629 ng/mL
Standard Deviation 270
Part A: Cmax of Tazemetostat Metabolites After Administration Alone and With Fluconazole
Part: A; Day 19; Treatment: Tazemetostat with Fluconazole; Analyte: EPZ-6930 (ER-897387)
548 ng/mL
Standard Deviation 288
Part A: Cmax of Tazemetostat Metabolites After Administration Alone and With Fluconazole
Part: A; Day 15; Treatment: Tazemetostat Alone; Analyte: EPZ006931
166 ng/mL
Standard Deviation 105
Part A: Cmax of Tazemetostat Metabolites After Administration Alone and With Fluconazole
Part: A; Day 15; Treatment: Tazemetostat Alone; Analyte: EPZ034163
46 ng/mL
Standard Deviation 56.7
Part A: Cmax of Tazemetostat Metabolites After Administration Alone and With Fluconazole
Part: A; Day 19; Treatment: Tazemetostat with Fluconazole; Analyte: EPZ034163
47.1 ng/mL
Standard Deviation 61.4
Part A: Cmax of Tazemetostat Metabolites After Administration Alone and With Fluconazole
Part: A; Day 19; Treatment: Tazemetostat with Fluconazole; Analyte: EPZ006931
167 ng/mL
Standard Deviation 153

SECONDARY outcome

Timeframe: Days 15 and 19, 0 to 8 hours post-dose

Outcome measures

Outcome measures
Measure
Part A
n=14 Participants
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Part A: Tmax of Tazemetostat Metabolites After Administration Alone and With Fluconazole
Part: A; Day 15; Treatment: Tazemetostat Alone; Analyte: EPZ-6930 (ER-897387)
2.01 hours
Standard Deviation 0.65
Part A: Tmax of Tazemetostat Metabolites After Administration Alone and With Fluconazole
Part: A; Day 19; Treatment: Tazemetostat with Fluconazole; Analyte: EPZ-6930 (ER-897387)
2.02 hours
Standard Deviation 0.86
Part A: Tmax of Tazemetostat Metabolites After Administration Alone and With Fluconazole
Part: A; Day 15; Treatment: Tazemetostat Alone; Analyte: EPZ006931
2.01 hours
Standard Deviation 0.89
Part A: Tmax of Tazemetostat Metabolites After Administration Alone and With Fluconazole
Part: A; Day 19; Treatment: Tazemetostat with Fluconazole; Analyte: EPZ006931
2.47 hours
Standard Deviation 0.9
Part A: Tmax of Tazemetostat Metabolites After Administration Alone and With Fluconazole
Part: A; Day 15; Treatment: Tazemetostat Alone; Analyte: EPZ034163
2.02 hours
Standard Deviation 1.26
Part A: Tmax of Tazemetostat Metabolites After Administration Alone and With Fluconazole
Part: A; Day 19; Treatment: Tazemetostat with Fluconazole; Analyte: EPZ034163
2.02 hours
Standard Deviation 1.27

SECONDARY outcome

Timeframe: Days 15 and 19, 0 to 8 hours post-dose

Outcome measures

Outcome measures
Measure
Part A
n=14 Participants
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Part A: t1/2 of Tazemetostat Metabolites After Administration Alone and With Fluconazole
Part: A; Day 15; Treatment: Tazemetostat Alone; Analyte: EPZ-6930 (ER-897387)
2.89 hours
Standard Deviation 0.358
Part A: t1/2 of Tazemetostat Metabolites After Administration Alone and With Fluconazole
Part: A; Day 19; Treatment: Tazemetostat with Fluconazole; Analyte: EPZ-6930 (ER-897387)
3.92 hours
Standard Deviation 0.621
Part A: t1/2 of Tazemetostat Metabolites After Administration Alone and With Fluconazole
Part: A; Day 15; Treatment: Tazemetostat Alone; Analyte: EPZ006931
3.24 hours
Standard Deviation 0.565

SECONDARY outcome

Timeframe: Day 19, 0 to 8 hours post-dose

Outcome measures

Outcome measures
Measure
Part A
n=14 Participants
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Part A: Exposure of Fluconazole After Administration of 400 mg Once Daily for 4 Days (AUC0-8)
170000 h*ng/mL
Standard Deviation 48300

SECONDARY outcome

Timeframe: Day 19, 0 to 8 hours post-dose

Outcome measures

Outcome measures
Measure
Part A
n=14 Participants
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Part A: Cmax of Fluconazole After Administration of 400mg Once Daily for 4 Days
25900 ng/mL
Standard Deviation 6500

SECONDARY outcome

Timeframe: Day 19, 0 to 8 hours post-dose

Outcome measures

Outcome measures
Measure
Part A
n=14 Participants
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
Part A: Tmax of Fluconazole After Administration of 400mg Once Daily for 4 Days
1.48 hours
Standard Deviation 1.95

SECONDARY outcome

Timeframe: Within 28 days of Day 1, 8 weeks, 16 weeks, 24 weeks

Objective response rate (ORR: complete response \[CR\] or PR) and disease control rate (DCR: CR or PR, or stable disease lasting 24 weeks or longer from start of treatment with tazemetostat) using Lugano Classification for subjects with lymphoma, or Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 for subjects with solid tumors.

Outcome measures

Outcome measures
Measure
Part A
n=13 Participants
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
n=16 Participants
Subjects enrolled in Part B received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg twice daily began on Day 2. On Day 16, subjects again received single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also received omeprazole 20 mg once daily in the morning on Days 16 through 19. Blood samples for analysis of plasma repaglinide, repaglinide metabolites, omeprazole, 5-OH-omeprazole, and omeprazole sulfone were collected predose and over 7 hours after administration on Day 1 and Day 16. Blood samples for analysis of plasma tazemetostat and metabolites were collected over 8 hours after administration of the morning dose on Day 16 and Day 19.
The Antitumor Activity of Tazemetostat Will be Assessed in Patients With Diffuse Large B-cell Lymphoma (DLBCL), Marginal Zone Lymphoma (MZL), Follicular Lymphoma (FL) or Advanced Solid Tumors .
Complete response (CR)
1 Participants
0 Participants
The Antitumor Activity of Tazemetostat Will be Assessed in Patients With Diffuse Large B-cell Lymphoma (DLBCL), Marginal Zone Lymphoma (MZL), Follicular Lymphoma (FL) or Advanced Solid Tumors .
Partial response (PR)
1 Participants
2 Participants
The Antitumor Activity of Tazemetostat Will be Assessed in Patients With Diffuse Large B-cell Lymphoma (DLBCL), Marginal Zone Lymphoma (MZL), Follicular Lymphoma (FL) or Advanced Solid Tumors .
Stable disease (SD)
0 Participants
9 Participants
The Antitumor Activity of Tazemetostat Will be Assessed in Patients With Diffuse Large B-cell Lymphoma (DLBCL), Marginal Zone Lymphoma (MZL), Follicular Lymphoma (FL) or Advanced Solid Tumors .
Progressive disease (PD)
2 Participants
5 Participants
The Antitumor Activity of Tazemetostat Will be Assessed in Patients With Diffuse Large B-cell Lymphoma (DLBCL), Marginal Zone Lymphoma (MZL), Follicular Lymphoma (FL) or Advanced Solid Tumors .
Not evaluable, missing, or unknown
9 Participants
3 Participants
The Antitumor Activity of Tazemetostat Will be Assessed in Patients With Diffuse Large B-cell Lymphoma (DLBCL), Marginal Zone Lymphoma (MZL), Follicular Lymphoma (FL) or Advanced Solid Tumors .
Objective Response Rate (ORR)
2 Participants
2 Participants
The Antitumor Activity of Tazemetostat Will be Assessed in Patients With Diffuse Large B-cell Lymphoma (DLBCL), Marginal Zone Lymphoma (MZL), Follicular Lymphoma (FL) or Advanced Solid Tumors .
Disease control rate (DCR) at 24 weeks
2 Participants
4 Participants
The Antitumor Activity of Tazemetostat Will be Assessed in Patients With Diffuse Large B-cell Lymphoma (DLBCL), Marginal Zone Lymphoma (MZL), Follicular Lymphoma (FL) or Advanced Solid Tumors .
Number of responders (achieving a CR or PR)
2 Participants
2 Participants

Adverse Events

Part A

Serious events: 4 serious events
Other events: 12 other events
Deaths: 1 deaths

Part B

Serious events: 6 serious events
Other events: 14 other events
Deaths: 3 deaths

Serious adverse events

Serious adverse events
Measure
Part A
n=16 participants at risk
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
n=16 participants at risk
Part B: Subjects enrolled in Part B will receive single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg BID will begin on Day 2. On Day 16, subjects again will receive single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also will receive omeprazole 20 mg once daily in the morning on Days 16 through 19.
Gastrointestinal disorders
Abdominal pain
12.5%
2/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Gastrointestinal disorders
Faecal incontinence
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Gastrointestinal disorders
Small intestinal obstruction
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Infections and infestations
Herpes zoster
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Infections and infestations
Appendicitis
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Infections and infestations
Bronchitis
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Infections and infestations
Peritonitis bacterial
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Infections and infestations
Sepsis
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Metabolism and nutrition disorders
Hypercalcaemia
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Metabolism and nutrition disorders
Hypocalcaemia
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Blood and lymphatic system disorders
Anaemia
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Injury, poisoning and procedural complications
Subdural haematoma
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Investigations
Platelet count decreased
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Tumour pain
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Respiratory, thoracic and mediastinal disorders
Pleural effusion
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Respiratory, thoracic and mediastinal disorders
Pneumonia aspiration
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Respiratory, thoracic and mediastinal disorders
Respiratory failure
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.

Other adverse events

Other adverse events
Measure
Part A
n=16 participants at risk
Part A: Subjects enrolled in Part A will receive treatment with oral tazemetostat tablets 400 mg BID for 24 days beginning on Day 1. Subjects will receive fluconazole 400 mg once daily for 4 days starting on Day 16. Tazemetostat 400 mg BID will continue through Day 24. Subjects will then receive tazemetostat 800 mg BID starting on Day 25.
Part B
n=16 participants at risk
Part B: Subjects enrolled in Part B will receive single oral doses of repaglinide 0.25 mg and omeprazole 20 mg on Day 1. Administration of tazemetostat 800 mg BID will begin on Day 2. On Day 16, subjects again will receive single oral doses of repaglinide 0.25 mg and omeprazole 20 mg approximately 1 hour after the morning dose of tazemetostat. Subjects also will receive omeprazole 20 mg once daily in the morning on Days 16 through 19.
Gastrointestinal disorders
Nausea
37.5%
6/16 • Adverse Events were collected over a period of 2 years.
18.8%
3/16 • Adverse Events were collected over a period of 2 years.
Gastrointestinal disorders
Diarrhoea
25.0%
4/16 • Adverse Events were collected over a period of 2 years.
25.0%
4/16 • Adverse Events were collected over a period of 2 years.
Gastrointestinal disorders
Vomiting
25.0%
4/16 • Adverse Events were collected over a period of 2 years.
18.8%
3/16 • Adverse Events were collected over a period of 2 years.
Gastrointestinal disorders
Flatulence
12.5%
2/16 • Adverse Events were collected over a period of 2 years.
12.5%
2/16 • Adverse Events were collected over a period of 2 years.
Gastrointestinal disorders
Abdominal distension
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Gastrointestinal disorders
Abdominal pain upper
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Gastrointestinal disorders
Constipation
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
25.0%
4/16 • Adverse Events were collected over a period of 2 years.
Gastrointestinal disorders
Eructation
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Gastrointestinal disorders
Oral pain
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Gastrointestinal disorders
Umbilical hernia
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
General disorders
Fatigue
37.5%
6/16 • Adverse Events were collected over a period of 2 years.
50.0%
8/16 • Adverse Events were collected over a period of 2 years.
General disorders
Asthenia
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
General disorders
Gait disturbance
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
General disorders
Influenza like illness
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
General disorders
Mucosal inflammation
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
General disorders
Oedema peripheral
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
General disorders
Face oedema
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
General disorders
Generalised oedema
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
General disorders
Pain
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
General disorders
Pyrexia
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
12.5%
2/16 • Adverse Events were collected over a period of 2 years.
Nervous system disorders
Dizziness
18.8%
3/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Nervous system disorders
Dysgeusia
12.5%
2/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Nervous system disorders
Balance disorder
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Nervous system disorders
Headache
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Nervous system disorders
Brain compression
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Nervous system disorders
Neuropathy peripheral
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Nervous system disorders
Paraesthesia
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Nervous system disorders
Presyncope
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Musculoskeletal and connective tissue disorders
Arthralgia
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Musculoskeletal and connective tissue disorders
Arthritis
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Musculoskeletal and connective tissue disorders
Back pain
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Musculoskeletal and connective tissue disorders
Bone pain
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Musculoskeletal and connective tissue disorders
Groin pain
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Musculoskeletal and connective tissue disorders
Muscle spasms
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Musculoskeletal and connective tissue disorders
Muscular weakness
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Musculoskeletal and connective tissue disorders
Fracture pain
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Musculoskeletal and connective tissue disorders
Pain in extremity
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Infections and infestations
Upper respiratory tract infection
12.5%
2/16 • Adverse Events were collected over a period of 2 years.
12.5%
2/16 • Adverse Events were collected over a period of 2 years.
Infections and infestations
Fungal skin infection
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Infections and infestations
Pneumonia
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
12.5%
2/16 • Adverse Events were collected over a period of 2 years.
Infections and infestations
Viral rash
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Infections and infestations
Lower respiratory tract infection
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Infections and infestations
Osteomyelitis
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Infections and infestations
Otitis media
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Infections and infestations
Otitis media bacterial
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Infections and infestations
Sinusitis
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
12.5%
2/16 • Adverse Events were collected over a period of 2 years.
Metabolism and nutrition disorders
Decreased appetite
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Metabolism and nutrition disorders
Hypokalaemia
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Metabolism and nutrition disorders
Hypomagnesaemia
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Metabolism and nutrition disorders
Hyponatraemia
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Skin and subcutaneous tissue disorders
Dermatitis acneiform
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Skin and subcutaneous tissue disorders
Dry skin
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Skin and subcutaneous tissue disorders
Skin exfoliation
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Skin and subcutaneous tissue disorders
Skin fissures
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Skin and subcutaneous tissue disorders
Skin lesion
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Skin and subcutaneous tissue disorders
Swelling face
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Skin and subcutaneous tissue disorders
Alopecia
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Skin and subcutaneous tissue disorders
Ecchymosis
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Skin and subcutaneous tissue disorders
Onychoclasis
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Skin and subcutaneous tissue disorders
Pruritus
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Skin and subcutaneous tissue disorders
Rash
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Eye disorders
Diplopia
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Eye disorders
Ocular discomfort
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Eye disorders
Photophobia
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Eye disorders
Macular oedema
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Eye disorders
Visual acuity reduced
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Injury, poisoning and procedural complications
Arthropod bite
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Injury, poisoning and procedural complications
Fall
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
12.5%
2/16 • Adverse Events were collected over a period of 2 years.
Injury, poisoning and procedural complications
Hip fracture
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Injury, poisoning and procedural complications
Incision site pain
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
12.5%
2/16 • Adverse Events were collected over a period of 2 years.
Psychiatric disorders
Insomnia
12.5%
2/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Psychiatric disorders
Anxiety
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Psychiatric disorders
Depression
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Psychiatric disorders
Agitation
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Immune system disorders
Seasonal allergy
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Investigations
Blood creatinine increased
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Investigations
Blood alkaline phosphatase increased
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Investigations
Blood calcium decreased
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Investigations
Blood immunoglobulin G decreased
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Investigations
Ejection fraction decreased
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Investigations
Haemoglobin decreased
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Investigations
Lymphocyte count decreased
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Investigations
Neutrophil count decreased
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Investigations
Weight increased
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Investigations
White blood cell count decreased
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
12.5%
2/16 • Adverse Events were collected over a period of 2 years.
Reproductive system and breast disorders
Testicular swelling
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Respiratory, thoracic and mediastinal disorders
Cough
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
12.5%
2/16 • Adverse Events were collected over a period of 2 years.
Respiratory, thoracic and mediastinal disorders
Wheezing
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
Respiratory, thoracic and mediastinal disorders
Dyspnoea
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Respiratory, thoracic and mediastinal disorders
Epistaxis
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Respiratory, thoracic and mediastinal disorders
Haemoptysis
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Respiratory, thoracic and mediastinal disorders
Nasal congestion
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
12.5%
2/16 • Adverse Events were collected over a period of 2 years.
Respiratory, thoracic and mediastinal disorders
Oropharyngeal pain
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Respiratory, thoracic and mediastinal disorders
Pulmonary pain
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Vascular disorders
Hypertension
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Vascular disorders
Hot flush
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Cardiac disorders
Angina pectoris
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Cardiac disorders
Stress cardiomyopathy
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Ear and labyrinth disorders
Ear pain
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Renal and urinary disorders
Micturition urgency
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.
Renal and urinary disorders
Pollakiuria
0.00%
0/16 • Adverse Events were collected over a period of 2 years.
6.2%
1/16 • Adverse Events were collected over a period of 2 years.

Additional Information

Kemly Calixte

Epizyme

Phone: 617-500-0608

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place