For Media
Tyler Marciniak Rick Bierly
Director, Communications Chief Financial Officer
(847) 736-7145 (415) 543-3470
tyler.marciniak@astellas.com
For Investors Anne Bowdidge
So Sekine Senior Director, Investor Relations
Senior Manager, Investor Relations (650) 218-6900
(847) 224-9557
sou.sekine@astellas.com
TOKYO and SAN FRANCISCO, February 22, 2016 - Astellas Pharma Inc. (TSE: 4503) and Medivation, Inc. (Nasdaq: MDVN) today announced that the U.S. Food and Drug Administration (FDA) has accepted for review a supplemental New Drug Application (sNDA) that they have submitted for XTANDI® (enzalutamide) capsules in metastatic castration- resistant prostate cancer (mCRPC), which includes findings from the Phase 2 TERRAIN and STRIVE studies, to update the relevant clinical sections within the current indication.
Enzalutamide is approved by the FDA for the treatment of patients with mCRPC. The Prescription Drug User Fee Act (PDUFA) goal date for a decision by the FDA is October 22, 2016.
A Type-II variation to update the Summary of Product Characteristics (SmPC) has also been submitted to the European Medicines Agency.
The Phase 2 TERRAIN trial enrolled 375 patients in North America and Europe. The trial enrolled patients with metastatic prostate cancer whose disease progressed despite treatment with a luteinizing hormone-releasing hormone (LHRH) analogue therapy or following surgical castration. The primary endpoint of the trial was progression-free survival (PFS), defined as time from randomization to centrally confirmed radiographic progression, skeletal-related event, initiation of new anti-neoplastic therapy or death, whichever occurred first. The trial was designed to evaluate enzalutamide at a dose of 160 mg taken orally once daily versus bicalutamide at a dose of 50 mg taken once daily, the approved dose in combination with an LHRH analogue.
The Phase 2 STRIVE trial enrolled 396 CRPC patients in the U.S. The trial randomized 257
patients with metastatic prostate cancer and 139 patients with non-metastatic prostate cancer whose disease progressed despite treatment with a LHRH analogue therapy or following surgical castration. The primary endpoint of the trial was PFS, defined as time from randomization to radiographic (bone or soft tissue) progression, prostate-specific antigen (PSA) progression (defined by Prostate Cancer Working Group 2 criteria), or death due to any cause, whichever occurs first. The trial was designed to evaluate enzalutamide at a dose of 160 mg taken once daily (n=198) versus bicalutamide at a dose of 50 mg taken once daily (n=198), the approved dose in combination with a LHRH analogue.
XTANDI is approved by the U.S. Food and Drug Administration for the treatment of patients with metastatic castration-resistant prostate cancer (CRPC).
Enzalutamide is an androgen receptor inhibitor that blocks multiple steps in the androgen receptor signaling pathway within the tumor cell. In preclinical studies, enzalutamide has been shown to competitively inhibit androgen binding to androgen receptors, and inhibit androgen receptor nuclear translocation and interaction with DNA. The clinical significance of this MOA is unknown.
In Study 1, Grade 3 and higher adverse reactions were reported among 47% of XTANDI patients and 53% of placebo patients. Discontinuations due to adverse events were reported for 16% of XTANDI patients and 18% of placebo patients. In Study 2, Grade 3-4 adverse reactions were reported in 44% of XTANDI patients and 37% of placebo patients.
Discontinuations due to adverse events were reported for 6% of both study groups.
Lab Abnormalities: Grade 1-4 neutropenia occurred in 15% of XTANDI patients (1% Grade 3-4) and 6% of placebo patients (0.5% Grade 3-4). Grade 1-4 thrombocytopenia occurred in 6% of XTANDI patients (0.3% Grade 3-4) and 5% of placebo patients (0.5% Grade 3-4). Grade 1-4 elevations in ALT occurred in 10% of XTANDI patients (0.2% Grade 3-4) and 16% of placebo patients (0.2% Grade 3-4). Grade 1-4 elevations in bilirubin occurred in 3% of XTANDI patients (0.1% Grade 3-4) and 2% of placebo patients (no Grade 3-4).
Infections: In Study 1, 1% of XTANDI patients compared to 0.3% of placebo patients died from infections or sepsis. In Study 2, 1 patient in each treatment group (0.1%) had an infection resulting in death.
Falls (including fall-related injuries), occurred in 9% of XTANDI patients and 4% of placebo patients. Falls were not associated with loss of consciousness or seizure. Fall-related injuries were more severe in XTANDI patients, and included non-pathologic fractures, joint injuries, and hematomas.
Hypertension occurred in 11% of XTANDI patients and 4% of placebo patients. No patients experienced hypertensive crisis. Medical history of hypertension was balanced between arms. Hypertension led to study discontinuation in
For Full Prescribing Information for XTANDI (enzalutamide) capsules, please visit http://www.astellas.us/docs/us/12A005-ENZ-WPI.pdf?v=1
Astellas Pharma Inc., based in Tokyo, Japan, is a company dedicated to improving the health of people around the world through the provision of innovative and reliable pharmaceutical products. We focus on Urology, Oncology, Immunology, Nephrology and Neuroscience as
prioritized therapeutic areas while advancing new therapeutic areas and discovery research leveraging new technologies/modalities. We are also creating new value by combining internal capabilities and external expertise in the medical/healthcare business. Astellas is on the forefront of healthcare change to turn innovative science into value for patients. For more information, please visit our website at www.astellas.com/en.
Medivation, Inc. is a biopharmaceutical company focused on the development and commercialization of medically innovative therapies to treat serious diseases for which there are limited treatment options. Medivation aims to transform the treatment of these diseases and offer hope to critically ill patients and their families. For more information, please visit us at http://www.medivation.com
In October 2009, Medivation (NASDAQ: MDVN) and Astellas (TSE: 4503) entered into a global agreement to jointly develop and commercialize enzalutamide. The companies are collaborating on a comprehensive development program that includes studies to develop enzalutamide across the full spectrum of advanced prostate cancer as well as advanced breast cancer. The companies jointly commercialize XTANDI in the United States and Astellas has responsibility for manufacturing and all additional regulatory filings globally, as well as commercializing XTANDI outside the United States.
This press release contains forward-looking statements regarding the supplemental New Drug Application (sNDA) for XTANDI® (enzalutamide) capsules, which are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 and are subject to risks and uncertainties. Actual results may differ substantially for a number of reasons, including if the data from STRIVE and/or TERRAIN are not incorporated into the prescribing information for XTANDI and other risks detailed in Medivation's filings with the Securities and Exchange Commission, or SEC, including its quarterly report on Form 10-Q for the quarter ended September 30, 2015, which was filed on November 6, 2015. You are cautioned not to place undue reliance on the forward-looking statements, which speak only as of the date of this press release. Medivation disclaims any obligation or undertaking to update, supplement or revise any forward-looking statements contained in this press release.
###
Astellas Pharma Inc. issued this content on 23 February 2016 and is solely responsible for the information contained herein. Distributed by Public, unedited and unaltered, on 23 February 2016 00:28:06 UTC
Original Document: http://www.astellas.com/en/corporate/news/pdf/160222_eg.pdf