FDA approves first treatment option specifically for patients with epithelioid sarcoma

FDAToday, the U.S. Food and Drug Administration granted accelerated approval to Tazverik (tazemetostat) for the treatment of adults and pediatric patients aged 16 years and older with metastatic (when cancer cells spread to other parts of the body) or locally advanced (when cancer has grown outside the organ it started in, but has not yet spread to distant parts of the body) epithelioid sarcoma not eligible for complete resection (surgically removing all of a tissue, structure, or organ). Epithelioid sarcoma is a rare sub-type of soft tissue sarcoma that often occurs in young adults.

"Epithelioid sarcoma accounts for less than one percent of all soft tissue sarcomas," said Richard Pazdur, M.D., director of the FDA’s Oncology Center of Excellence and acting director of the Office of Oncologic Diseases in the FDA's Center for Drug Evaluation and Research. "Until today, there were no treatment options specifically for patients with epithelioid sarcoma. The approval of Tazverik provides a treatment option that specifically targets this disease. When we brought Tazverik’s application to the Oncologic Drugs Advisory Committee last month, the committee voted unanimously that the benefits of the drug outweighed the risks."

Tazverik blocks activity of the EZH2 methyltransferase, which may help keep the cancer cells from growing. Most cases of epithelioid sarcoma begin in the soft tissue under the skin of an extremity, though it can start in other areas of the body. Surgical removal is considered the main treatment when the cancer is localized to one area of the body. Chemotherapy or radiation may also be given. However, there is a high likelihood for local and regional spread of the disease even with treatment and approximately 50% of patients have metastatic disease at the time of diagnosis. Metastatic disease is considered life-threatening to the patient.

Tazverik’s approval was based on the results of a clinical trial enrolling 62 patients with metastatic or locally advanced epithelioid sarcoma. During the clinical trial, patients received 800 milligrams (mg) of Tazverik twice a day until the disease progressed or the patient reached an unacceptable level of toxicity. Tumor response assessments were performed every eight weeks during the clinical trial. The trial measured how many patients experienced complete or partial shrinkage (by a certain amount) of their tumors during treatment (overall response rate). The overall response rate was 15%, with 1.6% of patients having a complete response and 13% having a partial response. Of the nine patients that had a response, six (67%) patients had a response lasting six months or longer.

The most common side effects for patients taking Tazverik were pain, fatigue, nausea, decreased appetite, vomiting and constipation. Patients treated with Tazverik are at increased risk of developing secondary malignancies including: T-cell lymphoblastic lymphoma (a type of blood cancer that affects the lymphatic system usually found in the lymph nodes), myelodysplastic syndrome (a disorder resulting from poorly formed or dysfunctional blood cells) and acute myeloid leukemia (a cancer of the blood and bone marrow). The FDA advises health care professionals to tell females of reproductive potential to use effective contraception during treatment with Tazverik and for six months after the final dose. Males with a female partner of reproductive potential should use effective contraception during treatment with Tazverik and for three months after the final dose. Females who are pregnant or breastfeeding should not take Tazverik because it may cause harm to a developing fetus or newborn baby. Tazverik must be dispensed with a patient Medication Guide that describes important information about the drug’s uses and risks.

Tazverik was granted Accelerated Approval, which enables the FDA to approve drugs for serious conditions to fill an unmet medical need based on a result that is reasonably likely to predict a clinical benefit to patients. Further clinical trials may be required to verify and describe Tazverik's clinical benefit. Tazverik also received Orphan Drug designation, which provides incentives to assist and encourage the development of drugs for rare diseases.

The FDA granted the approval of Tazverik to Epizyme Inc.

The FDA, an agency within the U.S. Department of Health and Human Services, protects the public health by assuring the safety, effectiveness, and security of human and veterinary drugs, vaccines and other biological products for human use, and medical devices. The agency also is responsible for the safety and security of our nation’s food supply, cosmetics, dietary supplements, products that give off electronic radiation, and for regulating tobacco products.

Most Popular Now

Pfizer's elranatamab granted FDA Breakthrough Ther…

Pfizer Inc. (NYSE:PFE) announced its investigational cancer immunotherapy, elranatamab, received Breakthrough Therapy Designation from the U.S. Food and Drug Administrati...

Salvat Laboratories announces submission of New Dr…

Salvat Laboratories announced that it has submitted a New Drug Application (NDA) to the FDA for the approval of the first ocular corticosteroid formulated in a nanoemulsi...

Bayer with continued strong performance

The Bayer Group maintained its strong business performance across all three divisions in the third quarter. "Despite rising inflation and global supply chain problems, we...

Vividion Therapeutics names Jenna Goldberg as Chie…

Vividion Therapeutics, Inc., a biopharmaceutical company utilizing novel discovery technologies to unlock high value, traditionally undruggable targets with precision the...

New insights on antibody responses to Omicron vari…

Knowing how well vaccination against one SARS-CoV-2 strain (with or without previous infection) counteracts infection with a different strain is a critical research quest...

Pfizer and BioNTech receive positive CHMP opinion …

Pfizer Inc. (NYSE: PFE) and BioNTech SE (Nasdaq: BNTX) announced a booster dose of their Omicron BA.4/BA.5-adapted bivalent COVID-19 vaccine (COMIRNATY® Original/Omicron ...

Sugar molecules as a target in cancer therapy

Cancer cells use sugar molecules on their surface to disable attacks by the body's immune system. Researchers at the University of Basel now report on how this mechanism ...

COVID vaccination improves effectiveness of cancer…

Patients with nasopharyngeal cancer are often treated with drugs that activate their immune system against the tumor. Until now, it was feared that vaccination against Co...

Making melanoma immortal: Pitt scientists discover…

Scientists at the University of Pittsburgh School of Medicine have discovered the missing puzzle piece in the mystery of how melanoma tumors control their mortality. I...

New drug shows promise for fighting both COVID-19 …

While vaccination can provide life-saving protection against COVID-19, scientists are still searching for ways to treat severe infections, including in people who cannot ...

Study reveals vaccine confidence declined consider…

A new study suggests that, despite the success of the COVID-19 vaccination campaigns, vaccine confidence has declined significantly since the start of the pandemic. Re...

Sanofi and GSK's next-generation COVID-19 booster …

After the European Medicines Agency's Committee for Medicinal Products for Human Use (CHMP) adopted a positive opinion for VidPrevtyn® Beta, the vaccine was approved by t...