Tazemetostat Expanded Access Program for Adults With Solid Tumors

July 1, 2026 updated by: Epizyme, Inc.
Patients with a diagnosis listed under "conditions" below are eligible to be considered for the EAP. These conditions must be serious or life-threatening at the time of enrollment and appropriate, comparable, or satisfactory alternative treatments must have been tried without clinical success. Patients with conditions not listed under "conditions" below are not eligible for the tazemetostat EAP.

Study Overview

Status

No longer available

Conditions

Intervention / Treatment

Study Type

Expanded Access

Expanded Access Type

  • Individual Patients

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

14 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

N/A

Description

Inclusion Criteria:

  1. Age (at the time of consent): >18 years of age.
  2. They are unable to participate in tazemetostat clinical trials for their condition.
  3. Can provide signed written informed consent.
  4. Documented loss of INI1 or SMARCA4 confirmed by IHC, or molecular confirmation of tumor bi-allelic INI1 or SMARCA4 loss or mutation when INI1 or SMARCA4 IHC is equivocal or unavailable.

  5. Female patients of childbearing potential should:

    • Agree to practice one highly effective method of contraception and one additional effective (barrier, for example condom or diaphragm with spermicide) method at the same time, from the time of providing voluntary written informed consent through (30 days or 5 half-lives, whichever is longer) after the last dose of tazemetostat, and
    • Have a negative beta-human chorionic gonadotropin (β-hCG) pregnancy test at time of screening and within 14 days prior to planned first dose of tazemetostat (urine or serum test is acceptable however, positive urine tests must be confirmed with serum testing), and
    • Agree to use effective contraception from start of screening until 30 days following the last dose of tazemetostat and have a male partner who uses a condom, or
    • Practice true abstinence, (when this is in line with the preferred and usual lifestyle of the patient or
    • Have a male partner who is vasectomized.

  6. Male patients with a female partner of childbearing potential should:

    • Be vasectomized, or
    • Agree to use condoms from first dose of tazemetostat until 30 days following the last dose of tazemetostat, or
    • Have a female partner who is NOT of childbearing potential.

Exclusion Criteria:

  1. Is unwilling to exclude grapefruit juice, Seville oranges and grapefruit from the diet and all foods that contain those fruits from time of enrollment to while on the EAP.
  2. Is currently taking any prohibited medication(s) as described in section 6.3.
  3. Has known hypersensitivity to any of the components of tazemetostat or other inhibitor(s) of EZH2.
  4. Has thrombocytopenia, neutropenia, or anemia of grade ≥3 (per CTCAE 4.03 criteria) within the past month, or any prior history of myeloid malignancies, including myelodysplastic syndrome (MDS).
  5. Is known to have any abnormalities associated with MDS (e.g. del 5q, chr 7 abn) and MPN (e.g. JAK2 V617F) observed in cytogenetic testing and DNA sequencing.
  6. Has a prior history of T-LBL/T-ALL.
  7. For female patients of childbearing potential: Is pregnant or nursing.
  8. For male patients: Is unwilling to adhere to contraception criteria from time of enrollment in study to at least 30 days after last dose of tazemetostat.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Epizyme, Inc.

Investigators

  • Study Director: Ipsen Medical Director, Ipsen

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Registration Dates

First Submitted

March 12, 2019

First Submitted That Met QC Criteria

March 12, 2019

First Posted (Actual)

March 14, 2019

Study Record Updates

Last Update Posted (Actual)

July 2, 2026

Last Update Submitted That Met QC Criteria

July 1, 2026

Last Verified

July 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • EZH-701

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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