30 October 2007 - Nexavar® Becomes First and Only Approved Treatment of Hepatocellular Carcinoma in Europe
Wayne, NJ and Emeryville, CA – Bayer HealthCare AG and Onyx Pharmaceuticals, Inc. today announced that the European Commission has granted marketing authorization to Nexavar® (sorafenib) tablets for the treatment of patients with hepatocellular carcinoma (HCC), or liver cancer. Nexavar, an oral anti-cancer drug, is the first and only approved systemic drug therapy for liver cancer and the only drug therapy shown to significantly improve overall survival in patients with the disease. Additional regulatory filings in HCC are under review in countries around the world including the U.S. and, most recently, in Japan. Nexavar is currently approved in more than 60 countries for the treatment of patients with advanced kidney cancer.
“The approval of Nexavar, a novel multi-kinase inhibitor, represents an unprecedented advance for patients with HCC who, until now, had no approved systemic treatment options,” said Arthur J. Higgins, chairman of the Executive Committee of Bayer HealthCare. “This milestone will likely establish Nexavar as the standard of care in HCC and shows the dedication of health authorities to make Nexavar available as quickly as possible. Most importantly, it allows us to offer patients and medical professionals the potential to improve treatment outcomes for this devastating disease.”
“Liver cancer is one of the few cancers in which the number of related deaths continues to increase,” said Hollings C. Renton, chairman, president and chief executive officer of Onyx Pharmaceuticals, Inc. “This second approval for Nexavar – first in advanced kidney cancer and now, less than two years later, in HCC – demonstrates our commitment to expediting the clinical development of this innovative therapy to treat today’s unmet needs in cancer. We will move swiftly to make Nexavar rapidly available to patients.”
The European Commission’s decision to approve Nexavar is based on positive data from the international, Phase 3, placebo-controlled Sorafenib HCC Assessment Randomized Protocol (SHARP) trial which demonstrated that Nexavar extended overall survival by 44 percent in patients with HCC (HR=0.69; p=0.0006) versus placebo. The primary objective of the study was to compare overall survival in patients administered Nexavar versus those administered placebo. Median overall survival was 10.7 months in Nexavar-treated patients compared to 7.9 months in those taking placebo. There were no significant differences in serious adverse event rates between the Nexavar and placebo-treated groups with the most commonly observed adverse events in patients receiving Nexavar being diarrhea and hand-foot skin reaction. Based on these data, a supplemental New Drug Application for Nexavar was granted Priority Review status by the U.S. Food and Drug Administration (FDA) in August. Most recently, the regulatory filing in Japan has been submitted.
“Results of the BEYOND study confirm the high efficacy, excellent tolerability and low drop-out rate for Betaferon®. The standard Betaferon® 250 mcg dose is the optimal Betaferon® dose for treatment-naïve patients,” said Dr. Douglas S Goodin, Professor of Neurology at the University of California, San Francisco (UCSF) and member of the Steering Committee of the BEYOND study. “BEYOND is a well-conducted, comprehensive study with a wealth of data that is still to be analyzed. I look forward to identifying how additional data that will come over time might help answer some of our remaining questions about MS and its treatment.“
HCC, the most common form of liver cancer, is responsible for about 90 percent of the primary malignant liver tumors in adults. Liver cancer is the sixth most common cancer in the world and the third leading cause of cancer-related deaths globally. Over 600,000 cases of liver cancer are diagnosed worldwide each year (about 54,000 in Europe, 19,000 in the U.S. and 390,000 in China, Korea and Japan) and incidence is increasing. Currently, the 5-year survival rate for patients with liver cancer in Europe is less than 8 percent. The 5-year survival rate for liver cancer patients in the United States is 11 percent and less than 10 percent in Asia among patients with non-resectable tumors.
Nexavar's Differentiated Mechanism
Nexavar targets both the tumor cell and tumor vasculature. In preclinical studies, Nexavar has been shown to target members of two classes of kinases known to be involved in both cell proliferation (growth) and angiogenesis (blood supply) – two important processes that enable cancer growth. These kinases included Raf kinase, VEGFR-1, VEGFR-2, VEGFR-3, PDGFR-B, KIT, FLT-3 and RET. Preclinical models have also demonstrated that Raf/MEK/ERK has a role in HCC. Therefore, blocking signaling through Raf-1 may offer therapeutic benefits in HCC.
Nexavar is currently approved in more than 50 countries, including the United States and the European Union, for the treatment of patients with advanced kidney cancer. In Europe, Nexavar is approved for the treatment of patients with advanced renal cell carcinoma (RCC) who have failed prior interferon-alpha or interleukin-2 based therapy or are considered unsuitable for such therapy. Nexavar is also being evaluated by the companies, international study groups, government agencies, and individual investigators as a single agent or combination treatment in a wide range of other cancers, including adjuvant therapy for kidney cancers, metastatic melanoma, breast cancer and non-small cell lung cancer (NSCLC).
Important Safety Considerations for U.S. Patients
Taking Nexavar A supplemental New Drug Application has been submitted to the U.S. Food and Drug Administration for Nexavar in the treatment of liver cancer, and is currently under review. Based on the currently approved package insert for the treatment of patients with advanced kidney cancer, hypertension may occur early in the course of therapy and blood pressure should be monitored weekly during the first six weeks of therapy and treated as needed. Incidence of bleeding regardless of causality was 15% for Nexavar vs. 8% for placebo and the incidence of treatment-emergent cardiac ischemia/infarction was 2.9% for Nexavar vs. 0.4% for placebo. Most common treatment-emergent adverse events with Nexavar were diarrhea, rash/desquamation, fatigue, hand-foot skin reaction, alopecia, and nausea. Grade 3/4 adverse events were 38% for Nexavar vs. 28% for placebo. Women of child-bearing potential should be advised to avoid becoming pregnant and advised against breast-feeding. In cases of any severe or persistent side effects, temporary treatment interruption, dose modification or permanent discontinuation should be considered.
For information on Nexavar, including U.S. prescribing information, visit www.nexavar.com or call 1.866.NEXAVAR (1.866.639.2827).
About Onyx Pharmaceuticals, Inc.
Onyx Pharmaceuticals, Inc. is a biopharmaceutical company developing innovative therapies that target the molecular mechanisms that cause cancer. The company is developing Nexavar®, a small molecule drug, with Bayer HealthCare Pharmaceuticals Inc. For more information about Onyx's pipeline and activities, visit the company's web site at: www.onyx-pharm.com.
About Bayer HealthCare Pharmaceuticals Inc.
Bayer HealthCare Pharmaceuticals Inc. is the U.S.-based pharmaceuticals unit of Bayer HealthCare LLC, a division of Bayer AG. One of the world's leading, innovative companies in the healthcare and medical products industry, Bayer HealthCare combines the global activities of the Animal Health, Consumer Care, Diabetes Care, and Pharmaceuticals divisions. In the U.S., Bayer HealthCare Pharmaceuticals comprises the following business units: Women's Healthcare, Diagnostic Imaging, Specialized Therapeutics, Hematology/Cardiology and Oncology.
