Welcome to the Big Molecule Watch!


Big Molecule Watch will be posting updates and analyses on regulatory issues, litigation, legislation, and other news in the ever-developing world of biosimilars. The editors of this blog have collectively been watching and engaging with the world of biosimilars (“big molecules”) since before the inception of the biosimilar industry in the U.S., and we’re excited to share the observations of our active watch on this new forum.

If you’re looking for a primer on biologics, check out our background post introducing the world of biologics, biosimilars, and the Biologics Price Competition and Innovation Act (“BPCIA”).

We’ve also collected (and will continue to update) some reference documents that might be of interest to visitors of this blog—you can find them under the “Links” section to the right of this page.

ASH Presentations Show Benefits of Biosimilar Pegfilgrastim Over On-Body Injector

Investigators presented two studies on Monday at the American Society of Hematology Annual Meeting and Exposition (ASH) showing the potential for significant cost-savings by switching to biosimilar pegfilgrastim from the pegfilgrastim on-body injector (PEG-OBI). In one study, investigators demonstrated a potential for savings from a conversion to several biosimilar filgrastim…

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Biosimilar Market Updates: Samsung Biologics, Celltrion, and Alvotech

Samsung Biologics’ third quarter report disclosed that it had suspended its research and development of its SAIT101, a biosimilar of Rituxan.  As we previously reported, the rituximab product was being developed through Archigen Biotech, a joint venture with AstraZeneca.  According to a report in Korea Biomedical Review, a Samsung Biologics…

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FDA Accepts Application From Samsung Bioepis and Biogen For Lucentis® (ranibizumab) Biosimilar

Samsung Bioepis and Biogen issued a press release on November 18 announcing that the U.S. Food and Drug Administration has accepted for review their Biologics License Application for SB11, a proposed biosimilar of Lucentis® (ranibizumab). Ranibizumab is an anti-VEGF (vascular endothelial growth factor) therapy used to treat retinal vascular disorders,…

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Survey of U.S. Rheumatologists Suggests Acceptance of Biosimilars for Treatment of New Patients, but Reluctance to Switch Patients from Reference Products

The results of a survey of board-certified rheumatologists in the United States about their beliefs and knowledge regarding biosimilar products were recently published in the journal Rheumatology. The online survey was conducted in May 2019 and included 19 multiple-choice questions assessing respondents’ knowledge of concepts and terminology concerning biosimilars, availability…

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Genentech Sues Centus Over Proposed Bevacizumab Biosimilar

Yesterday, Genentech, Inc. filed a complaint in the Eastern District of Texas alleging that Centus Biotherapeutics, Ltd., Fujifilm Kyowa Kirin Biologics Co., Ltd., Fujifilm Corp., and Kyowa Kirin Co, Ltd. (collectively, Centus) proposed biosimilar to Genentech’s AVASTIN (bevacizumab) product infringes 10 U.S. patents.  Genentech’s complaint, styled as a Complaint for…

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