Business Wire

Chugai’s Enspryng (Satralizumab) Receives Regulatory Approval from FDA for Neuromyelitis Optica Spectrum Disorder

17.8.2020 09:00:00 EEST | Business Wire | Press release

Share

Chugai Pharmaceutical Co., Ltd. (TOKYO: 4519) announced that the U.S. Food and Drug Administration (FDA) has approved the pH-dependent binding humanized anti-IL-6 receptor monoclonal antibody, Enspryng™ (US generic name: satralizumab-mwge) (hereafter, Enspryng) created by Chugai for the treatment of adults living with anti-aquaporin-4 (AQP4) antibody positive neuromyelitis optica spectrum disorder (NMOSD). Enspryng is administered subcutaneously every four weeks**. Enspryng was granted Breakthrough Therapy Designation in December 2018 and the US Biologics License Application (BLA) was filed in August 2019 by Genentech Inc., a member of Roche Group.

This approval is based on the results from two global phase III clinical studies in patients with NMOSD: SAkuraSky Study (NCT02028884) and SAkuraStar Study (NCT02073279). SAkuraSky is a study to evaluate Enspryng in combination with baseline immunosuppressive treatment, and SAkuraStar is a study to evaluate Enspryng as monotherapy.

Enspryng, created by Chugai, is a pH-dependent binding humanized anti-IL-6 receptor antibody, which was the first product developed by applying our proprietary recycling antibody technology. The drug is believed to prevent relapse of NMOSD by inhibiting IL-6 signal signaling which is a key driver in NMOSD. Enspryng has been approved in Canada, Japan and Switzerland. Enspryng is designated as an orphan drug in Europe. The application was accepted for review by the European Medicines Agency in 2019.

*Self-administration is not included in Japanese package insert
**Subcutaneous administration at 2-week intervals up to the fourth week of treatment and at 4-week intervals thereafter

[Reference]

About neuromyelitis optica spectrum disorder (NMOSD)

NMOSD is an autoimmune disease of the central nervous system characterized by inflammatory lesions in the optic nerves and spinal cord, and cause continual and significant decrease in quality of life due to permanent neurological disability. Patients with NMOSD frequently experience a relapsing disease course with repeated attacks leading to accumulating neurological damage and disability. Symptoms may include visual impairment, motor disability, pain leading to decreased quality of life. In some cases, attacks of NMOSD result in death. Aquaporin-4 antibodies (AQP4-IgG), pathogenic antibodies, are detected in at least two-thirds of NMOSD people. AQP4-IgG is known to target and damage a specific central nervous cell type called astrocytes, resulting in inflammatory demyelinating lesions of the optic nerve(s), spinal cord and brain 1-4. The inflammatory cytokine IL-6 is now emerging as an important factor in NMOSD pathogenesis 5-9.

Diagnostic criteria introduced in 2006 for NMO were characterized by inflammation of the optic nerve (optic neuritis) and the spinal cord (myelitis). These were revised in 2007 with the definition of NMOSD, proposed for diseases with either optic neuritis or myelitis. In 2015, the definition of NMOSD further revised to include a broader spectrum of diseases. The diagnostic term NMOSD is now widely used 10.

Trademarks used or mentioned in this release are protected by laws.

Sources
1. Jarius S, Ruprecht K, Wildemann B et al. Contrasting disease patterns in seropositive and seronegative neuromyelitis optica: A multicentre study of 175 patients. J Neuroinflammation 2012;9:14.
2. Lennon VA, Wingerchuk DM, Kryzer TJ et al. A serum autoantibody marker of neuromyelitis optica: distinction from multiple sclerosis. Lancet 2004;364:2106-12.
3. Marignier R, Bernard-Valnet R, Giraudon P et al. Aquaporin-4 antibody-negative neuromyelitis optica: Distinct assay sensitivity-dependent entity. Neurology 2013;80:2194-200.
4. Takahashi T, Fujihara K, Nakashima I et al. Anti-aquaporin-4 antibody is involved in the pathogenesis of NMO: a study on antibody titre. Brain 2007;130:1235-43.
5. Chihara N, Aranami T, Sato W et al. Interleukin 6 signaling promotes anti-aquaporin 4 autoantibody production from plasmablasts in neuromyelitis optica. Proc Natl Acad Sci USA 2011;108:3701-6.
6. Kimura A, Kishimoto T. IL-6: regulator of Treg/Th17 balance. Eur J Immunol 2010;40:1830-5.
7. Lin J, Li X, Xia J. Th17 cells in neuromyelitis optica spectrum disorder: a review. Int J Neurosci2016;126:1051-60.
8. Takeshita Y, Obermeier B, Cotleur AC, et al. Effects of neuromyelitis optica-IgG at the blood-brain barrier in vitro. Neurol Neuroimmunol Neuroinflamm. 2016;4(1):e311.
9. Obermeier B, Daneman R, Ransohoff RM. Development, maintenance and disruption of the blood-brain barrier. Nat Med 2013;19:1584-96.
10. Wingerchuk DM, Banwell B, Bennett JL et al. International consensus diagnostic criteria for neuromyelitis optica spectrum disorders. Neurology 2015;85:177-89.

To view this piece of content from cts.businesswire.com, please give your consent at the top of this page.

Contact information

For Media
Chugai Pharmaceutical Co., Ltd.
Media Relations Group, Corporate Communications Dept.,
Tomoko Shimizu
Tel: +81-3-3273-0881
E-mail: pr@chugai-pharm.co.jp

For US media
Chugai Pharma USA Inc.
Casey Astringer
Tel: +1-908-516-1350
E-mail: pr@chugai-pharm.com

For European media
Chugai Pharma U.K. Ltd.
Tania Richards
Tel: +44-20-8987-5680
E-mail: pr@chugai.eu

For Taiwanese media
Chugai Pharma Taiwan Ltd.
Susan Chou
Tel: +886-2-2715-2000
E-mail: pr@chugai.com.tw

For Investors
Chugai Pharmaceutical Co., Ltd.
Investor Relations Group, Corporate Communications Dept.,
Toshiya Sasai
Tel: +81-3-3273-0554
E-mail: ir@chugai-pharm.co.jp

About Business Wire

Business Wire
Business Wire



http://www.businesswire.com

For more than 50 years, Business Wire has been the global leader in press release distribution and regulatory disclosure.

Subscribe to releases from Business Wire

Subscribe to all the latest releases from Business Wire by registering your e-mail address below. You can unsubscribe at any time.

Latest releases from Business Wire

Biocytogen Announces Clinical Milestone with First Patient Dosed in Phase 1 Trial of IDEAYA’s First-in-Class B7H3/PTK7 Bispecific TOP1 ADC IDE03428.2.2026 02:00:00 EET | Press release

Biocytogen Pharmaceuticals (Beijing) Co., Ltd. (Biocytogen, SSE: 688796; HKEX: 02315), a global biotechnology company that drives the research and development of novel antibody-based drugs with innovative technologies, today announced that its partner IDEAYA Biosciences, Inc. (“IDEAYA”; Nasdaq: IDYA) has dosed the first patient in IDEAYA’s Phase 1 dose-escalation/expansion clinical trial of IDE034, an investigational B7H3/PTK7 bispecific TOP1 ADC. Pursuant to the companies’ option and license agreement, first patient dosing triggers a $5 million milestone payment to Biocytogen. According to IDEAYA, the Phase 1 study is designed to characterize IDE034’s safety profile, tolerability, and PK as a monotherapy, and IDEAYA also intends to evaluate combination regimens with DNA damage response (DDR) -targeting agents such as its oral PARG inhibitor IDE161 as the program advances. IDE034 is a potential first-in-class bispecific B7H3/PTK7 TOP1 ADC, independently developed by Biocytogen and lice

IQM and Real Asset Acquisition Corp. to Host Conference Call/Webcast to Discuss Proposed Transaction27.2.2026 14:00:00 EET | Press release

IQM Finland Oy, a global leader in full-stack superconducting quantum computers (“IQM”, “IQM Quantum Computers” or the “Company”), and Real Asset Acquisition Corp. (Nasdaq: RAAQ), a special purpose acquisition company (“RAAQ”), announced that they will host a conference call to discuss their recently announced business combination, including certain transaction highlights. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260227472716/en/ IQM Radiance quantum computer As previously disclosed, on February 23, 2026, IQM and RAAQ announced they have entered into a definitive business combination agreement, which will result in IQM becoming a public company and listing American Depositary Shares on one of the two leading U.S. stock exchanges. The transaction provides funding with the aim to accelerate IQM’s technology and commercial development towards fault-tolerance quantum computing, further advancing its position as a leading p

HighRadius Launches $0 Implementation Fee, $0 Subscription Fee via Outcome Based Pricing for oCFO Software27.2.2026 13:00:00 EET | Press release

HighRadius launches Office of the CFO first Outcome Based Pricing with $0 Implementation fee and $0 Subscription until Go-Live. Customers only pay a fraction of realized gains based on P&L impact. Chapter 1: Outcome Based Pricing (OBP) Introduction of OBP: HighRadius, a provider of 190+ AI agents for Order-to-Cash, Accounts Payable, Record-to-Report, and Treasury introduces Outcome Based Pricing (OBP). Three Components of OBP: Customers pay a) $0 in Implementation fees, b) $0 in Subscription fees until Go Live, c) HighRadius earns a fraction of the actual savings realized by the client. Chapter 2: US GAAP & ASC 606 Constraints Not Designed for Innovation: The traditional ASC 606 model requires companies to standardize and recognize revenue based on contractual obligations. For a traditional SaaS subscription, the obligation is access to software over time. AI agents are designed to deliver quantifiable, real-time Business Outcomes that do not fit the traditional accounting framework. C

Kioxia Appoints Yoshihiko Kawamura as Chief Financial Officer27.2.2026 10:15:00 EET | Press release

Kioxia Holdings Corporation (TOKYO:285A), a world leader in memory solutions, today announced the appointment of Yoshihiko Kawamura as Chief Financial Officer (CFO), effective April 1, 2026. Mr. Kawamura brings extensive international experience to Kioxia, having held assignments at Mitsubishi Corporation’s U.S. headquarters, served as General Manager of its Chicago office, and completed a tenure at the World Bank. At Hitachi, Ltd., he held senior leadership positions, including Chief Strategy Officer (CSO), Chief Financial Officer (CFO), and Chief Risk Management Officer (CRMO), where he was instrumental in leading the company’s management reforms. Since joining Kioxia as Executive Vice President in June 2025, Mr. Kawamura has worked closely with the executive team to advance the business through strategic capital and financial planning. Following its initial public offering on the Prime Market of the Tokyo Stock Exchange in December 2024, Kioxia is entering a new phase of growth char

DNP Invests in Rapidus to Support the Establishment of Mass Production for Next-Generation Semiconductors27.2.2026 09:18:00 EET | Press release

Dai Nippon Printing Co., Ltd. (DNP, TOKYO:7912) today announced that it has participated in Rapidus Corporation’s funding round as one of the round investors. This strategic funding initiative supports Rapidus’ plan to steadily progress from its current R&D phase to mass production of 2nm (10⁻⁹ meters) logic semiconductors by 2027. Through this initiative, DNP will advance the development and mass production of EUV lithography photomasks and support Rapidus as it establishes a mass production system for 2nm & next-generation semiconductors. Background In recent years, the rise in energy consumption, in line with increased data generation, has become a challenge, driving demand for next-generation semiconductors capable of improving device performance and reducing power consumption. Next-generation semiconductors manufactured using EUV lithography enable the formation of finer patterns on silicon wafers compared to currently available technologies. This in turn is boosting expectations

In our pressroom you can read all our latest releases, find our press contacts, images, documents and other relevant information about us.

Visit our pressroom
World GlobeA line styled icon from Orion Icon Library.HiddenA line styled icon from Orion Icon Library.Eye