• SELARSDI is approved for both adult and pediatric indications and is the second biosimilar approved under the strategic partnership between Alvotech and Teva
  • SELARSDI is expected to be marketed in the U.S. on or after February 21, 2025, following a settlement agreement with Johnson & Johnson, the manufacturer of Stelara
  • SELARSDI was developed and is manufactured by Alvotech using murine cell (Sp2/0) and a continuous perfusion process, which are the same type of cells and process used for the production of Stelara

REYKJAVIK, Iceland & PARSIPPANY, NJ, USA I April 16, 2024 I Alvotech (NASDAQ: ALVO) and Teva Pharmaceuticals, a U.S. affiliate of Teva Pharmaceutical Industries Ltd. (NYSE and TASE: TEVA), today announced that the U.S. Food and Drug Administration (FDA) has approved SELARSDI (ustekinumab-aekn) injection for subcutaneous use, as a biosimilar to Stelara, for the treatment of moderate to severe plaque psoriasis and for active psoriatic arthritis in adults and pediatric patients 6 years and older. Under the strategic partnership between Teva and Alvotech, Teva is responsible for the exclusive commercialization of SELARSDI in the United States.

“The approval of SELARSDI – which is our second biosimilar approval this year – underscores Teva’s commitment to expanding the availability, access and uptake of this important treatment option to patients in the U.S.,” said Thomas Rainey, Senior Vice President, U.S. Market Access at Teva. “The biosimilars market is growing, both globally and in the U.S., and biosimilars are a key component of delivering on Teva’s Pivot to Growth strategy. The partnership model that we’ve established enables us to leverage our commercial presence and experiences globally as we move to bring additional biosimilars to market.”

Robert Wessman, Chairman and CEO of Alvotech, added, “We are delighted to announce our second biosimilar approval in the U.S., which is the thirty-eighth approved market for our biosimilar to Stelara globally. Bringing SELARSDI to market in the U.S. early next year presents a significant opportunity to improve patient access to a vital biologic in inflammatory disease and contribute to the reduction of inflationary pressure in healthcare costs. The development of SELARSDI leveraged our purpose-built end-to-end development and manufacturing platform for biosimilars. Being able to develop the biosimilar in the same cell type and continuous perfusion process as was used for the reference product, facilitated the development program’s success.”

Ustekinumab is a human monoclonal antibody (mAb) that selectively targets the p40 protein, a component common to both interleukin (IL)-12 and IL-23 cytokines, which play crucial roles in treating immune-mediated diseases like psoriasis and psoriatic arthritis. Alvotech developed and produces SELARSDI using Sp2/0 cells and a continuous perfusion process, which are the same type of host cell line and process used in the production of Stelara.

Sales of the reference product Stelara in the U.S. were nearly $7 billion in 2023.1 The availability of a Stelara biosimilar will create opportunities for cost savings across the healthcare system and introduce additional treatment options for patients. In the U.S., plaque psoriasis is the most common form of psoriasis while psoriatic arthritis accounts for approximately six percent of all cases of juvenile arthritis.2,3

In June 2023, Alvotech and Teva announced that they had reached a settlement and license agreement with the manufacturer of the reference biologic, Johnson & Johnson, granting a license entry date for SELARSDI in the United States no later than February 21, 2025.

In August 2020, Alvotech and Teva entered into a strategic partnership for the exclusive commercialization of five of Alvotech’s biosimilar product candidates, and in August 2023, the collaboration was extended to include two additional biosimilars and new presentations of two previously partnered products. Alvotech handles development and manufacturing, while Teva is responsible for the exclusive commercialization in the U.S., which leverages Teva’s experience and extensive sales and marketing infrastructure. SELARSDI is the second biosimilar approved under the strategic partnership: in February 2024, the FDA approved SIMLANDI®, the first high-concentration, citrate-free biosimilar to Humira that has been granted an interchangeability status by the FDA.

The FDA approval of SELARSDI, referred to as AVT04 during development, was based on a totality of evidence, including analytical and clinical data. The clinical development program included data from: 1) Study AVT04-GL-301, a randomized, double blind, multicenter, 52-week study to demonstrate equivalent efficacy and to compare safety and immunogenicity between SELARSDI and the reference product Stelara in patients with moderate to severe chronic plaque-type psoriasis. The study was conducted in four countries in Europe and enrolled 581 patients. The primary efficacy endpoint was Psoriasis Area and Severity Index (PASI) percent improvement from Baseline to Week 12; 2) Study AVT04-GL-101, a Phase I, randomized, double-blind, single-dose, parallel-group, 3-arm study to compare the pharmacokinetic, safety, tolerability, and immunogenicity profiles of SELARSDI, administered as a single 45mg/0.5mL subcutaneous injection with that of the US-licensed Stelara as well as EU-approved Stelara. The study was conducted in Australia and New Zealand and enrolled 294 healthy adult volunteers.

Use of Trademarks

Stelara® is a registered trademark of Johnson & Johnson.
Humira® is a registered trademark of AbbVie Biotechnology Ltd.

About Alvotech

Alvotech is a biotech company, founded by Robert Wessman, focused solely on the development and manufacture of biosimilar medicines for patients worldwide. Alvotech seeks to be a global leader in the biosimilar space by delivering high quality, cost-effective products, and services, enabled by a fully integrated approach and broad in-house capabilities. Alvotech’s current pipeline includes eight disclosed biosimilar candidates aimed at treating autoimmune disorders, eye disorders, osteoporosis, respiratory disease, and cancer. Alvotech has formed a network of strategic commercial partnerships to provide global reach and leverage local expertise in markets that include the United States, Europe, Japan, China, and other Asian countries and large parts of South America, Africa and the Middle East. Alvotech’s commercial partners include Teva Pharmaceuticals, a US affiliate of Teva Pharmaceutical Industries Ltd. (US), STADA Arzneimittel AG (EU), Fuji Pharma Co., Ltd (Japan), Advanz Pharma (EEA, UK, Switzerland, Canada, Australia and New Zealand), Cipla/Cipla Gulf/Cipla Med Pro (Australia, New Zealand, South Africa/Africa), JAMP Pharma Corporation (Canada), Yangtze River Pharmaceutical (Group) Co., Ltd. (China), DKSH (Taiwan, Hong Kong, Cambodia, Malaysia, Singapore, Indonesia, India, Bangladesh and Pakistan), YAS Holding LLC (Middle East and North Africa), Abdi Ibrahim (Turkey), Kamada Ltd. (Israel), Mega Labs, Stein, Libbs, Tuteur and Saval (Latin America) and Lotus Pharmaceuticals Co., Ltd. (Thailand, Vietnam, Philippines, and South Korea). Each commercial partnership covers a unique set of product(s) and territories. Except as specifically set forth therein, Alvotech disclaims responsibility for the content of periodic filings, disclosures and other reports made available by its partners. For more information, please visit www.alvotech.com. None of the information on the Alvotech website shall be deemed part of this press release.

About Teva

Teva Pharmaceutical Industries Ltd. (NYSE and TASE: TEVA) is a global pharmaceutical leader with a category-defying portfolio, harnessing our generics expertise and stepping up innovation to continue the momentum behind the discovery, delivery, and expanded development of modern medicine. For over 120 years, Teva’s commitment to bettering health has never wavered. Today, the company’s global network of capabilities enables its 37,000 employees across 58 markets to push the boundaries of scientific innovation and deliver quality medicines to help improve health outcomes of millions of patients every day. To learn more about how Teva is all in for better health, visit www.tevapharm.com.


SELARSDI is a human interleukin-12 and -23 antagonist indicated for:

  • the treatment of adults and pediatric patients 6 years of age and older with moderate to severe plaque psoriasis who are candidates for phototherapy or systemic therapy.
  • the treatment of adults and pediatric patients 6 years of age and older with active psoriatic arthritis.

Please click here for full Prescribing Information for SELARSDI.

1 Johnson and Johnson Full-Year and Fourth Quarter 2023 Financial Results: https://www.investor.jnj.com/news/news-details/2024/Johnson–Johnson-Reports-Q4-and-Full-Year-2023-Results/default.aspx.
2 Psoriasis in Children: Your FAQs. (2021, June 29). Healthline.
3 Philadelphia, T. C. H. of. (2014, August 23). Psoriatic Arthritis in Children.

SOURCE: Alvotech