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Novartis biosimilar copycat takes aim at Amgen's drug Enbrel

Swiss drugmaker Novartis' logo is seen behind scaffolding at the company's plant in the northern Swiss town of Stein January 27, 2015. REUTERS/Arnd Wiegmann

ZURICH (Reuters) - The U.S. Food and Drug Administration has accepted Novartis (NOVN.VX) unit Sandoz's regulatory submission for approval of a biosimilar copy of Amgen's (AMGN.O) blockbuster Enbrel drug, the Swiss drugmaker said on Friday.

Biosimilars aim to copy biologic products, which are made inside living cells, but they can never be exact duplicates, so biosimilar manufacturers need to conduct clinical trials to show their products work as intended.

Enbrel, or etanercept as the drug is known generically, is a big prize since it was the world's fifth-biggest selling medicine in 2014 with sales of nearly $9 billion.

Amgen, which sells the drug in North America, booked Enbrel sales of $4.7 billion last year. Pfizer (PFE.N) sells Enbrel elsewhere.

Merck (MRK.N) and Samsung Bioepis last month won approval for biosimilar etanercept in South Korea and a copy is also on the way in Europe, where Samsung [SAGR.UL] is working with Biogen (BIIB.O), but Sandoz said it believed it was the first company to receive a U.S. FDA file acceptance.

Sandoz is seeking approval for all indications included in the label for Enbrel, a so-called anti-TNF drug, which is used to treat a range of autoimmune diseases including rheumatoid arthritis and psoriasis, it said in a statement.

Novartis last month launched the first biosimilar drug in the United States after a U.S. appeals court declined to stop the sale of the company's copycat version of Amgen's blockbuster cancer drug Neupogen.

Insurers and government healthcare systems hope biosimilars will cost the public 40 percent to 50 percent less than the original drugs and experience in Europe suggests that steep discounts are being offered in some markets.

"Sandoz believes that the totality of evidence in its submission, including two pivotal clinical studies, will demonstrate that the proposed biosimilar is essentially the same as the reference product," Novartis said on Friday.

The potential for biosimilars to take a large slice of the market is grabbing the attention of both healthcare providers, who see big budget savings, and investors, worried about the impact on the profits of companies making original products.

(Reporting by Michael Shields and Ben Hirschler; Editing by Muralikumar Anantharaman ad Greg Mahlich)