Tazemetostat in Treating Patients With Metastatic or Unresectable Solid Tumors or B-Cell Lymphomas With Liver Dysfunction

A Phase I Study of Single Agent Tazemetostat in Subjects With Advanced Solid Tumors and B-Cell Lymphomas With Hepatic Dysfunction

This phase I trial studies the best dose and side effects of tazemetostat in treating patients with solid tumors or B-cell lymphomas with liver dysfunction that have spread to other places in the body or cannot be removed by surgery. Tazemetostat may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth.

Study Overview

• Status: Withdrawn
• Conditions: Metastatic Malignant Solid Neoplasm; Unresectable Solid Neoplasm; Stage IIIB Hepatocellular Carcinoma AJCC v7; Stage IIIC Hepatocellular Carcinoma AJCC v7; Ann Arbor Stage IV B-Cell Non-Hodgkin Lymphoma; Ann Arbor Stage III B-Cell Non-Hodgkin Lymphoma; Stage IV Hepatocellular Carcinoma AJCC v7; Stage III Hepatocellular Carcinoma AJCC v7; Stage IIIA Hepatocellular Carcinoma AJCC v7; Stage IVA Hepatocellular Carcinoma AJCC v7; Stage IVB Hepatocellular Carcinoma AJCC v7
• Intervention / Treatment: Other: Laboratory Biomarker Analysis; Other: Pharmacological Study; Drug: Tazemetostat

Detailed Description

PRIMARY OBJECTIVES:

I. To determine safety, tolerability and recommended phase 2 dose (RP2D) of tazemetostat in patients with varying degrees of hepatic dysfunction.

SECONDARY OBJECTIVES:

I. To assess the pharmacokinetics (PK) profiles of tazemetostat in patients with varying degrees of hepatic dysfunction.

II. To observe preliminary antitumor activity of tazemetostat in this population, especially in tumors with aberrations in EZH2 or SWI/SNF complex pathways.

OUTLINE: This is a dose escalation study.

Patients receive tazemetostat orally (PO) twice daily (BID) on days 1-28. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up at 4 weeks.

• Study Type: Interventional
• Phase: Phase 1

Contacts and Locations

Study Locations

• United States
  • Maryland
    • Baltimore, Maryland, United States, 21287
      • Johns Hopkins University/Sidney Kimmel Cancer Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (ADULT, OLDER_ADULT)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Patients must have histologically and/or cytologically confirmed solid tumors or B cell lymphoma that are metastatic or unresectable and for which standard treatment options do not exist; patients with hepatocellular carcinoma are eligible without pathological diagnosis if diagnosed on the basis of blood work and imaging
• Patients with evaluable disease will be eligible
• All patients must have completed any prior chemotherapy, targeted therapy and major surgery, >= 28 days before study entry; for daily or weekly chemotherapy without the potential for delayed toxicity, a washout period of 14 days may be acceptable, and questions related to this can be discussed with study principal investigator
• Eastern Cooperative Oncology Group (ECOG) performance status =< 2 (Karnofsky >= 60%)
• Life expectancy of greater than 3 months
• Able to swallow and retain orally-administered medication and does not have any clinically significant gastrointestinal abnormalities that may alter absorption such as malabsorption syndrome or major resection of the stomach or bowels
• All prior treatment-related toxicities must be Common Terminology Criteria for Adverse Events (CTCAE) version 5.0 grade =< 1 (except alopecia) at the time of enrollment
• Leukocytes >= 3,000/mcL
• Absolute neutrophil count >= 1,500/mcL
• Platelets >= 100,000/mcL
• Hemoglobin >= 90 g/L (9.0 g/dL)
• Creatinine within normal institutional limits OR calculated creatinine clearance >= 60 mL/min/1.73 m^2 (Cockcroft-Gault formula) for patients with creatinine levels above institutional normal
• Patients with abnormal hepatic function will be eligible and will be grouped according to criteria; patients with active hemolysis should be excluded; no distinction should be made between liver dysfunction due to metastases and liver dysfunction due to other causes; this data will be captured in the case report form (CRF); registration laboratory investigations will be used to assign a patient to a hepatic function group; hepatic function tests should be repeated within 24 hours prior to starting initial therapy and may result in patients' group assignment being altered if different to registration test results

• For women of childbearing potential: agreement to remain abstinent (refrain from heterosexual intercourse) or use contraceptive methods that result in a failure rate of < 1% per year during the treatment period and for 30 days after tazemetostat discontinuation

  • A woman is considered to be of childbearing potential if she is postmenarchal, has not reached a postmenopausal state (>= 12 continuous months of amenorrhea with no identified cause other than menopause), and has not undergone surgical sterilization (removal of ovaries and/or uterus)
  • Examples of contraceptive methods with a failure rate of < 1% per year include bilateral tubal ligation, male sterilization, established, proper use of hormonal contraceptives that inhibit ovulation, hormone-releasing intrauterine devices, and copper intrauterine devices
  • Female subjects who use hormonal contraceptives should use an additional barrier method of birth control while on study treatment and for 30 days after discontinuation of study treatment
  • The reliability of sexual abstinence should be evaluated in relation to the duration of the clinical study and the preferred and usual lifestyle of the patient; periodic abstinence (e.g., calendar, ovulation, symptothermal, or postovulation methods) and withdrawal are not acceptable methods of contraception

• For men: agreement to remain abstinent (refrain from heterosexual intercourse) or use contraceptive measures and agreement to refrain from donating sperm, as defined below:

  • With female partners of childbearing potential or pregnant female partners, men must remain abstinent or use a condom during the treatment period and for at least 4 months after the last dose of study drug; men must refrain from donating sperm during this same period; in addition, female partners of male subjects should adhere to the following:

    • Intrauterine device (IUD)(must provide medical documentation of IUD)
    • Hormonal contraceptive (partner must be on a stable dose of the same hormonal contraceptive product for at least 4 weeks before receiving study drug) AND a condom (hormonal contraceptives must be supplemented with condoms)
  • The reliability of sexual abstinence should be evaluated in relation to the duration of the clinical study and the preferred and usual lifestyle of the patient; periodic abstinence and withdrawal are not acceptable methods of contraception
• Females of childbearing potential must have a negative serum pregnancy test at screening
• Ability to understand and the willingness to sign a written informed consent document
• Has a QT interval corrected by Fridericia's formula (QTcF) =< 450 msec
• Whenever available, archival tissue (block or minimum 10 slides) is requested for molecular characterization, e.g. detection of somatic mutations and/or candidate biomarkers of response; this is not mandatory and lack of available tissue would not be an exclusion criteria

Exclusion Criteria:

• Symptomatic or untreated leptomeningeal or brain metastases or spinal cord compression as documented by computed tomography (CT) or magnetic resonance imaging (MRI) scan, analysis of cerebrospinal fluid or neurological exam; patients with primary glioblastoma multiforme are excluded
• Radiation therapy in the last 14 days; palliative radiation to a localized area without residual toxicity requires a washout of greater than 7 days
• Clinically significant bleeding diathesis or coagulopathy, including known platelet function disorders; patients on anticoagulation with low molecular weight heparin are allowed
• Known hypersensitivity to any of the components of tazemetostat
• History of allergic reactions attributed to compounds of similar chemical or biologic composition to tazemetostat

• Concurrent investigational agent or anticancer therapy

  • Note: megestrol [Megace] if used as an appetite stimulant is allowed
  • Concurrent treatment with bisphosphonates is permitted; however, treatment must be initiated prior to the first dose of study therapy; prophylactic use of bisphosphonates in patients without bone disease is not permitted, except for the treatment of osteoporosis
  • The concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, St. John's wort, kava, ephedra [ma huang], ginkgo biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng)
• Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, clinically significant bleeding diathesis or coagulopathy, including known platelet function disorders, symptomatic congestive heart failure, unstable angina pectoris, clinically significant cardiac arrhythmias, or psychiatric illness/social situations that would limit compliance with study requirements
• Active hepatitis B virus (HBV; hepatitis B surface antigen [HepBsAG] positive [+ve] and IgM anti-hepatitis B virus core antibody [HBc]), or hepatitis C virus (HCV; detectable HCV ribonucleic acid [RNA]) infection; patients with chronic or cleared HBV and HCV infection are eligible
• Patients with known human immunodeficiency virus (HIV) infection are eligible if being treated with non-interacting antiretroviral (ARV) agents or be willing to stop ARV for the protocol
• Treatment with strong inhibitors or inducers of CYP3A are prohibited from 14 days prior to the first dose of tazemetostat to the end of the study
• Active gastrointestinal tract disease with malabsorption syndrome or unable to swallow oral medications
• Any condition or medical problem in addition to the underlying malignancy and organ dysfunction that the investigator feels would pose unacceptable risk
• Has thrombocytopenia, neutropenia, or anemia of grade >= 3 (per CTCAE 5.0 criteria) or any prior history of myeloid malignancies, including myelodysplastic syndrome (MDS)
• Has abnormalities known to be associated with MDS (e.g. del 5q, chr 7 abn) and multiple primary neoplasms (MPN) (e.g. JAK2 V617F) observed in cytogenetic testing and DNA sequencing
• Has a prior history of T-acute lymphoblastic lymphoma (T-LBL)/T-acute lymphoblastic leukemia (ALL)

Study Plan

How is the study designed?

Design Details

• Primary Purpose: TREATMENT
• Allocation: NA
• Interventional Model: SINGLE_GROUP
• Masking: NONE

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
EXPERIMENTAL: Treatment (tazemetostat); Patients receive tazemetostat PO BID on days 1-28. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity.	Other: Laboratory Biomarker Analysis; Correlative studies; Other: Pharmacological Study; Correlative studies; Drug: Tazemetostat; Given PO; Other Names: EPZ-6438; E7438; EPZ6438

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Incidence of adverse events of tazemetostat in patients with varying degrees of hepatic dysfunction assessed using Common Terminology Criteria for Adverse Events version 5.0	Frequency and severity of adverse events will be tabulated using counts and proportions detailing frequently occurring, serious and severe events of interest. Adverse events will be summarized using all adverse events experienced, although a sub-analysis may be conducted including only those adverse events in which the treating physician deems possibly, probably or definitely attributable to study treatment.	Up to 2 years
Recommended phase 2 dose (RP2D) of tazemetostat in patients with varying degrees of hepatic dysfunction	RP2D will be determined.	Up to 2 years

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Pharmacokinetic (PK) profiles of tazemetostat in patients with varying degrees of hepatic dysfunction	Plasma concentrations will be measured by Q2 Solutions using a validated Liquid chromatography (LC)/mass spectrometry (MS)/MS assay. Molecular and clinical predictors of clinical outcomes will be investigated using logistic regression and Cox proportional hazards models. Potential predictors include clinical predictors and molecular correlates. Descriptive statistics and plotting of data will also be used to better understand potential relationships. Given the small sample size, and exploratory nature of these endpoints, all pharmacodynamic analyses conducted will be considered exploratory. All analyses will be considered exploratory and inference will be performed with appropriate caution.	Up to course 4 day 1 (day 85)
Antitumor activity of tazemetostat	Molecular and clinical predictors of clinical outcomes will be investigated using logistic regression and Cox proportional hazards models. Potential predictors include clinical predictors and molecular correlates. Descriptive statistics and plotting of data will also be used to better understand potential relationships. All analyses will be considered exploratory and inference will be performed with appropriate caution.	Up to 2 years
Antitumor activity of tazemetostat in population with tumors with aberrations in EZH2 or SWI/SNF complex pathways	Molecular and clinical predictors of clinical outcomes will be investigated using logistic regression and Cox proportional hazards models. Potential predictors include clinical predictors and molecular correlates. Descriptive statistics and plotting of data will also be used to better understand potential relationships. All analyses will be considered exploratory and inference will be performed with appropriate caution.	Up to 2 years
Objective confirmed response	Response will be assessed using the Response Evaluation Criteria in Solid Tumors (RECIST) criteria 1.1	Up to 2 years
Duration of response	Response will be assessed using the RECIST criteria 1.1.	Up to 2 years
Best response	Response will be assessed using the RECIST criteria 1.1.	Up to 2 years

Collaborators and Investigators

• Sponsor: National Cancer Institute (NCI)
• Investigators: Principal Investigator: Daniel J Renouf, University Health Network Princess Margaret Cancer Center LAO

Study record dates

Study Major Dates

• Study Start (ACTUAL): March 16, 2018
• Primary Completion (ACTUAL): September 19, 2019
• Study Completion (ACTUAL): September 19, 2019

Study Registration Dates

• First Submitted: July 12, 2017
• First Submitted That Met QC Criteria: July 12, 2017
• First Posted (ACTUAL): July 14, 2017

Study Record Updates

• Last Update Posted (ACTUAL): February 7, 2020
• Last Update Submitted That Met QC Criteria: February 6, 2020
• Last Verified: January 1, 2020

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Digestive System Diseases; Immune System Diseases; Neoplasms by Histologic Type; Lymphoproliferative Disorders; Lymphatic Diseases; Immunoproliferative Disorders; Neoplasms by Site; Adenocarcinoma; Neoplasms, Glandular and Epithelial; Digestive System Neoplasms; Liver Diseases; Liver Neoplasms; Neoplasms; Lymphoma; Lymphoma, B-Cell; Carcinoma; Carcinoma, Hepatocellular; Lymphoma, Non-Hodgkin
• Other Study ID Numbers: NCI-2017-01231 (REGISTRY: CTRP (Clinical Trial Reporting Program)); UM1CA186644 (U.S. NIH Grant/Contract); PJC-025; 10130 (OTHER: CTEP)

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No