EMD Serono, the biopharmaceutical business of Merck KGaA, Darmstadt, Germany, in the US and Canada, and Pfizer Inc. announced that the US Food and Drug Administration (FDA) has accepted for Priority Review EMD Serono's Biologics License Application (BLA) for avelumab as a treatment for patients with locally advanced or metastatic urothelial carcinoma (mUC) with disease progression on or after platinum-based therapy. The FDA has set a Prescription Drug User Fee Act (PDUFA) target action date of August 27, 2017, for avelumab in this indication.

"Taken together with last year's filing for metastatic Merkel cell carcinoma, this BLA acceptance confirms our rapid and continued progress in the clinical development of avelumab," said Luciano Rossetti, M.D., Executive Vice President, Global Head of Research & Development at the biopharma business of Merck KGaA, Darmstadt, Germany. "We continue to evaluate avelumab in cancers that have limited or suboptimal treatment choices, such as metastatic or locally advanced urothelial carcinoma, to hopefully be able to provide patients with new treatment options for fighting their disease."

Despite advances in the treatment of UC, the prognosis for patients remains poor, particularly when the disease has metastasized. Bladder cancer makes up approximately 90% of urothelial cancers and is the sixth most common cancer in the US.[1],[2] "

Advanced urothelial carcinoma remains a difficult-to-treat tumor, which is why we are developing a comprehensive clinical development program that involves Phase I and III trials designed to address this challenge," said Chris Boshoff, M.D., Ph.D., senior vice president and head of immuno-oncology, Early Development and Translational Oncology, Pfizer Global Product Development. "We're continuing to accelerate our urothelial carcinoma development program and look forward to continuing our dialogue with the FDA."

Avelumab is an investigational, fully human anti-PD-L1 antibody. The FDA's Priority Review status reduces the review time from 10 months to a goal of six months from the day of filing acceptance and is given to drugs that may offer major advances in treatment or may provide a treatment where no adequate therapy exists. In November 2016, the FDA accepted, and granted Priority Review status to, the BLA for avelumab for the treatment of patients with metastatic Merkel cell carcinoma.

The international clinical development program for avelumab, known as JAVELIN, involves at least 30 clinical programs, including nine Phase III trials, and more than 4,000 patients evaluated across more than 15 tumor types. In December 2015, Merck KGaA, Darmstadt, Germany, and Pfizer announced the initiation of a Phase III study (JAVELIN Bladder 100) of avelumab in the first-line setting as a maintenance treatment in patients with locally advanced or metastatic UC. This trial is currently enrolling patients.

Urothelial Carcinoma includes several tumors originating from the cells lining the bladder, renal pelvis and urethra. While cancers outside of the bladder are relatively uncommon, accounting for an estimated 10% of cases, bladder cancer represents 90% of urothelial cancers and is the ninth most common cancer globally. Worldwide, approximately 400,000 new cases of bladder cancer are diagnosed and 150,000 deaths are attributed to this disease each year. The incidence and mortality of bladder cancer have remained unchanged over the past 25 years.

Avelumab is a fully human antibody specific for a protein found on tumor cells called PD-L1, or programmed death ligand-1. By inhibiting PD-L1 interactions, avelumab is thought to enable the activation of T-cells and the adaptive immune system. By retaining a native Fc-region, avelumab is thought to potentially engage the innate immune system and induce antibody-dependent cell-mediated cytotoxicity (ADCC). In November 2014, Merck KGaA, Darmstadt, Germany, and Pfizer announced a strategic alliance to co-develop and co-commercialize avelumab. Common adverse reactions include fatigue, musculoskeletal pain, diarrhea, nausea peripheral edema, decreased appetite, and rash. Immune-mediated adverse reactions have also been reported.

Immuno-oncology is a top priority for Merck KGaA, Darmstadt, Germany, and Pfizer Inc. The global strategic alliance between Merck KGaA, Darmstadt, Germany, and Pfizer Inc., New York, US, enables the companies to benefit from each other's strengths and capabilities and further explore the therapeutic potential of avelumab, an investigational anti-PD-L1 antibody initially discovered and developed by Merck KGaA, Darmstadt, Germany. The immuno-oncology alliance will jointly develop and commercialize avelumab and advance Pfizer's PD-1 antibody. The alliance is focused on developing high-priority international clinical programs to investigate avelumab as a monotherapy, as well as in combination regimens, and is striving to find new ways to treat cancer.

EMD Serono is the biopharmaceutical business of Merck KGaA, Darmstadt, Germany - a leading science and technology company - in the US and Canada focused exclusively on specialty care.