Biogen’s MS antibody Tysabri also sees $2 billion in annual sales due to its high efficacy

Business Strategy & Outlook

Biogen’s specialty-market-focused drug portfolio and novel, neurology-focused pipeline create a wide economic moat. Biogen’s strategy has its roots in the 2003 merger of Biogen (multiple sclerosis drug Avonex) and Idec (cancer drug Rituxan). While Rituxan is succumbing to biosimilar competition, Biogen is expanding its neurology portfolio beyond MS, including blockbuster neuromuscular disease drug Spinraza and several promising drugs behind Aduhelm in Alzheimer’s disease. In MS, Avonex and longer-acting Plegridy still generate nearly $2 billion in annual sales and remain the leading MS interferon drugs. Biogen’s MS antibody Tysabri also sees $2 billion in annual sales due to its high efficacy. Oral MS drug Tecfidera peaked above $4 billion in sales in 2019, but U.S. generics drastically cut into sales in 2021 after entry in 2020. The new oral therapy Vumerity offers improved GI tolerability but will only partly offset this headwind. While pricing power and demand for Biogen’s injectable MS portfolio are eroding in the face of new competition, Biogen receives substantial royalties on the biggest new competitor, Roche’s Ocrevus, which helps offset pressure on older MS drugs.

Outside of MS, Biogen has strong human genetic validation for its neurology pipeline. Spinal muscular atrophy drug Spinraza (partnered with Ionis) is a $2 billion drug, although competition from Novartis (gene therapy Zolgensma) and Roche (oral drug Evrysdi) are beginning to erode sales. While Aduhelm was approved in the U.S. in June 2021, skepticism surrounding the launch and lack of Medicare coverage have made the drug a commercial failure. That said, Biogen and Eisai’s lecanemab (data fall 2022) could have more definitive data. While there is significant uncertainty surrounding Biogen’s Alzheimer’s pipeline, the market also underestimates Biogen’s remaining pipeline, which includes a continuing partnership with Ionis (including tau-targeting Alzheimer’s drug BIIB080) and drug candidates to treat conditions including stroke, depression, Parkinson’s, pain, and ALS.

Financial Strengths

Biogen’s year-end 2021 cash and marketable securities balance ($4.7 billion) and free cash flow will help fund future repurchases and allow the firm flexibility on future acquisitions. Most maturities for Biogen’s $7.3 billion in long-term debt are well into the future, with only $1 billion in debt due before 2025. Historically, Biogen has focused on returning excess cash to shareholders via buybacks, but its limited acquisition and collaboration record is strong, and more tuck-in acquisitions going forward can be seen. Of the $15 billion in free cash flow generated in 2006-15, Biogen spent the vast majority of this cash on repurchases, with an average repurchase price over 2006-15 of $87 per share.

Bulls Say

Biogen leads the $20 billion global MS market with Avonex, Plegridy, Tysabri, and Tecfidera, and the launch of Vumerity partly protects Tecfidera sales from generic headwinds in the U.S.
Biogen receives royalties and profit share from Roche on MS drug Ocrevus and cancer therapies Rituxan and Gazyva, boosting Biogen’s profitability.
Biogen’s neurology portfolio outside of MS, including Spinraza in SMA, should help diversify revenue and boost.

Company Description

Biogen and Idec merged in 2003, combining forces to market Biogen’s multiple sclerosis drug Avonex and Idec’s cancer drug Rituxan. Today, Rituxan and next-generation antibody Gazyva are marketed via a collaboration with Roche. Biogen also markets novel MS drugs Plegridy, Tysabri, Tecfidera, and Vumerity. In Japan, Biogen’s MS portfolio is co-promoted by Eisai. Hemophilia therapies Eloctate and Alprolix (partnered with SOBI) were spun off as part of Bioverativ in 2017. Biogen has several drug candidates in phase 3 trials in neurology and neurodegenerative diseases and has launched Spinraza with partner Ionis. Aduhelm was approved as the firm’s first Alzheimer’s disease therapy in June 2021.

(Source: Morningstar)

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