Aadi Bioscience Announces FDA Approval of its First Product FYARRO™ for Patients with Locally Advanced Unresectable or Metastatic Malignant Perivascular Epithelioid Cell Tumor (PEComa)

  • FYARRO is the first and only approved therapy for adults for the treatment of malignant PEComa, an ultra-rare and aggressive form of sarcoma with a strong female predominance

LOS ANGELES, CA, USA I November 23, 2021 I Aadi Bioscience, Inc. (“Aadi”) (Nasdaq: AADI), a biopharmaceutical company focusing on precision therapies for genetically-defined cancers with alterations in mTOR pathway genes, today announced that the U.S. Food and Drug Administration (FDA) has approved FYARRO™ (sirolimus protein-bound particles for injectable suspension) (albumin-bound) for intravenous use for the treatment of adult patients with locally advanced unresectable or metastatic malignant perivascular epithelioid cell tumor (PEComa). FYARRO is the first and only FDA-approved treatment for advanced malignant PEComa in adults.

Neil Desai, Ph.D., Founder, Chief Executive Officer and President of Aadi, stated, “We are thrilled to have received full FDA-approval of FYARRO. The approval of FYARRO is a momentous event not just for Aadi but, importantly for advanced malignant PEComa patients. We reiterate that all of us at Aadi are incredibly grateful to all of the people with advanced malignant PEComa, their families and caregivers, as well as the healthcare professionals who made the FYARRO clinical studies possible.”

“The approval of FYARRO, the first approved drug for advanced malignant PEComa, an aggressive sarcoma with a poor prognosis and few treatment options, will provide physicians with a new weapon for treating patients with this rare disease,” added Andrew Wagner, M.D., Ph.D., a senior oncologist at Dana-Farber Cancer Institute and the Principal Investigator in the pivotal AMPECT registrational trial. “In our AMPECT trial, FYARRO demonstrated durable responses in mTOR inhibitor-naïve patients with locally advanced unresectable or metastatic PEComa, with an acceptable and manageable safety profile. This is a drug that will be welcomed by the physician community as the only approved therapeutic option for patients with advanced malignant PEComa.”

In the Phase 2 registrational AMPECT trial the overall response rate as assessed by independent review was 39% (12/31) with 2 patients achieving a Complete Response after prolonged follow up. The median duration of response has not been reached with a median follow-up of 36 months, and a range of 5.6 to 55.5+ months and ongoing. Among responders, 92% had a response lasting greater than or equal to 6 months; 67% had a response lasting greater than or equal to 12 months; and 58% had a response lasting greater than or equal to 2 years. As is the case with other therapeutics of the mTOR class, the FYARRO prescribing information includes warnings and precautions related to stomatitis, myelosuppression, infections, hypokalemia, hyperglycemia, interstitial lung disease, hemorrhage, and hypersensitivity reactions. Grade 3 non-hematologic events occurring in more than 10% of patients included stomatitis, rash, fatigue and infections. Grade 3 laboratory abnormalities occurring in more than 10% of patients that worsened from baseline included lymphocytopenia, increased glucose, and decreased potassium. For detailed important safety information, please see below.

Brendan Delaney, Chief Operating Officer of Aadi, added, “We have built a strong commercial team and devised a thoughtful strategy in preparation for FYARRO’s launch. With FYARRO’s demonstrated clinical profile we believe it will become a standard of care for advanced malignant PEComa. We look forward to engaging with physicians to educate the market about this new treatment.”

Robert G. Maki, M.D., Ph.D., Clinical Director of the Sarcoma Program, and Professor of Medicine at the University of Pennsylvania, added, “Patients living with locally advanced or metastatic PEComa are in urgent need of new treatment options. The approval of FYARRO is a significant advancement for treating patients with this disease. Treating sarcoma patients in my practice, I have seen the need for a therapy that addresses the specific molecular alterations of advanced malignant PEComa. I am encouraged that FYARRO provided a clinically meaningful benefit in overall response rate, with some patients responding for up to several years. I am pleased to have FYARRO as a new therapeutic option to offer my advanced malignant PEComa patients."

About Malignant PEComa

Advanced malignant PEComa, defined by the World Health Organization as ‘mesenchymal tumors composed of distinctive cells that show a focal association with blood-vessel walls and usually express both melanocytic and smooth muscle markers,’ are a rare subset of soft-tissue sarcomas, with an undefined cell of origin. While there is no formal epidemiology for malignant PEComa, it is estimated that there are about 100-300 new patients per year in the United States. Malignant PEComas may arise in almost any body site (typically the uterus, retroperitoneum, lung, kidney, liver, genitourinary, and gastrointestinal tract with a female predominance) and can have an aggressive clinical course including distant metastases and ultimately death. The estimated prognosis based on retrospective reports is 12-16 months. Cytotoxic chemotherapies typically used for sarcoma show minimal benefit and there are currently no drugs approved for this disease. Malignant PEComas have been shown to frequently harbor mutations in the TSC1 and/or TSC2 genes that result in the activation of mTOR pathway making it a rational therapeutic target for this disease.


FYARRO is an mTOR inhibitor indicated for the treatment of adult patients with locally advanced unresectable or metastatic malignant perivascular epithelioid cell tumor (PEComa).

Full prescribing information can be found here.

About Aadi Bioscience 

Aadi is a commercial-stage biopharmaceutical company focused on precision therapies for genetically-defined cancers. Aadi’s primary goal is to bring transformational therapies to cancer patients with mTOR pathway driver alterations where other mTOR inhibitors have not or cannot be effectively exploited due to problems of pharmacology, effective drug delivery, safety, or effective targeting to the disease site. In November 2021, Aadi received FDA approval for FYARRO for the treatment of adult patients with locally advanced unresectable or metastatic malignant perivascular epithelioid cell tumor (PEComa). FYARRO is an mTOR inhibitor bound to human albumin that has demonstrated significantly higher tumor accumulation, greater mTOR target suppression, and increased tumor growth inhibition over other mTOR inhibitors in preclinical models.

Based on data from the AMPECT trial with FYARRO and following discussions with the FDA about other emerging data with FYARRO, Aadi plans to initiate a tumor-agnostic registrational trial in mTOR inhibitor-naïve solid tumors harboring TSC1 or TSC2 inactivating alterations by the end of 2021 or early 2022. Aadi also has ongoing studies to evaluate dosing of FYARRO in combination regimens. More information on Aadi’s development pipeline is available on the Aadi website at www.aadibio.com.

SOURCE: Aadi Bioscience

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