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Eisai Receives Positive Opinion from the CHMP in the European Union for Lecanemab in Early Alzheimer’s Disease

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Eisai and Biogen received a positive opinion from the European Medicines Agency's CHMP for lecanemab in treating early Alzheimer's disease. The treatment is recommended for adult patients with mild cognitive impairment and mild dementia due to Alzheimer's, specifically for ApoE ε4 non-carriers or heterozygotes with confirmed amyloid pathology. The European Commission's final decision is expected within 67 days. In clinical trials, lecanemab showed a 31% reduction in clinical decline compared to placebo at 18 months, and demonstrated a 33% less decline in daily living activities. The drug is already approved in several countries including the U.S., Japan, and China.

Eisai e Biogen hanno ricevuto un parere positivo dal CHMP dell'Agenzia Europea dei Medicinali per lecanemab nel trattamento dell'Alzheimer nella fase iniziale. Il trattamento è raccomandato per pazienti adulti con lieve deterioramento cognitivo e demenza lieve dovuti all'Alzheimer, specificamente per i non portatori o gli eterozigoti di ApoE ε4 con patologia di amiloide confermata. La decisione finale della Commissione Europea è attesa entro 67 giorni. Negli studi clinici, lecanemab ha mostrato una riduzione del 31% nel declino clinico rispetto al placebo a 18 mesi, e ha dimostrato un declino del 33% in meno nelle attività quotidiane. Il farmaco è già approvato in diversi paesi, tra cui Stati Uniti, Giappone e Cina.

Eisai y Biogen recibieron una opinión positiva del CHMP de la Agencia Europea de Medicamentos para lecanemab en el tratamiento de la enfermedad de Alzheimer en etapas tempranas. El tratamiento se recomienda para pacientes adultos con deterioro cognitivo leve y demencia leve debido al Alzheimer, específicamente para no portadores o heterocigotos de ApoE ε4 con patología de amiloide confirmada. Se espera que la decisión final de la Comisión Europea se tome en un plazo de 67 días. En ensayos clínicos, lecanemab mostró una reducción del 31% en el declive clínico en comparación con placebo a los 18 meses, y demostró un declive del 33% menor en actividades de la vida diaria. El medicamento ya está aprobado en varios países, incluidos EE. UU., Japón y China.

아이사이(Eisai)와 바이오젠(Biogen)은 조기 알츠하이머병 치료를 위한 레카네맙(lecanemab)에 대해 유럽약품청(CHMP)으로부터 긍정적인 의견을 받았습니다. 이 치료는 알츠하이머로 인해 경미한 인지 저하와 경증 치매가 있는 성인 환자에게 권장됩니다. 특히, 아밀로이드 병리가 확인된 ApoE ε4 비보유자 또는 이형 접합자에게 해당됩니다. 유럽연합 집행위원회의 최종 결정은 67일 이내에 나올 것으로 예상됩니다. 임상 시험에서 레카네맙은 18개월 동안 위약에 비해 임상적 쇠퇴 31% 감소를 나타냈으며, 일상 생활 활동에서 33% 더 적은 쇠퇴를 시연했습니다. 이 약물은 이미 미국, 일본 및 중국을 포함한 여러 국가에서 승인받았습니다.

Eisai et Biogen ont reçu un avis positif du CHMP de l'Agence Européenne des Médicaments pour lecanemab dans le traitement de la maladie d'Alzheimer à un stade précoce. Ce traitement est recommandé pour les patients adultes présentant une légère déficience cognitive et une légère démence dues à la maladie d'Alzheimer, spécifiquement pour les non-porteurs ou hétérozygotes d'ApoE ε4 avec une pathologie amyloïde confirmée. La décision finale de la Commission Européenne est attendue dans un délai de 67 jours. Dans les essais cliniques, lecanemab a montré une réduction de 31% du déclin clinique par rapport au placebo à 18 mois, et a démontré une réduction de 33% du déclin dans les activités de la vie quotidienne. Le médicament est déjà approuvé dans plusieurs pays, y compris les États-Unis, le Japon et la Chine.

Eisai und Biogen erhielten eine positive Stellungnahme des CHMP der Europäischen Arzneimittelbehörde für Lecanemab zur Behandlung von frühen Alzheimer-Erkrankungen. Die Behandlung wird für erwachsene Patienten mit leichter kognitiver Beeinträchtigung und leichter Demenz aufgrund von Alzheimer empfohlen, insbesondere für ApoE ε4 Nicht-Träger oder Heterozygoten mit bestätigter Amyloidpathologie. Die endgültige Entscheidung der Europäischen Kommission wird innerhalb von 67 Tagen erwartet. In klinischen Studien zeigte Lecanemab eine Reduktion des klinischen Rückgangs um 31% im Vergleich zu Placebo nach 18 Monaten und zeigte einen 33% geringeren Rückgang bei den täglichen Aktivitäten. Das Medikament ist bereits in mehreren Ländern, darunter den USA, Japan und China, zugelassen.

Positive
  • Received positive CHMP opinion for EU market approval
  • Clinical trials showed 31% reduction in clinical decline vs placebo
  • 33% less decline in daily living activities vs placebo
  • Already approved in major markets (US, Japan, China)
  • Addresses large market with 6.9M affected patients in Europe
Negative
  • to specific patient population (ApoE ε4 non-carriers or heterozygotes)
  • Common adverse reactions include infusion-related reactions (26%) and ARIA-H (13%)

Insights

The CHMP's positive opinion for lecanemab in early Alzheimer's disease represents a significant regulatory milestone. The data shows 31% reduction in clinical decline on CDR-SB at 18 months compared to placebo and 33% less decline in daily living activities. This efficacy profile in the target population (ApoE ε4 non-carriers or heterozygotes) is meaningful for early-stage AD patients.

The potential EU approval would open access to approximately 6.9 million AD patients in Europe, though the actual eligible population will be smaller due to specific genetic and disease stage requirements. The safety profile appears manageable, with key adverse events including infusion reactions (26%) and ARIA complications.

This development strengthens Biogen and Eisai's market position in the AD space, following previous approvals in major markets including the US, Japan and China. The upcoming EU Commission decision could significantly expand the commercial opportunity for both companies.

TOKYO and CAMBRIDGE, Mass., Nov. 14, 2024 (GLOBE NEWSWIRE) -- Eisai Co., Ltd. (Headquarters: Tokyo, CEO: Haruo Naito, “Eisai”) and Biogen Inc. (Nasdaq: BIIB, Corporate headquarters: Cambridge, Massachusetts, CEO: Christopher A. Viehbacher, “Biogen”) announced today a positive opinion has been received from the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) recommending approval of the amyloid-beta (Aβ) monoclonal antibody lecanemab as a treatment of adult patients with a clinical diagnosis of mild cognitive impairment and mild dementia due to Alzheimer’s disease (Early Alzheimer’s disease) who are apolipoprotein E ε4 (ApoE ε4)* non-carriers or heterozygotes with confirmed amyloid pathology.1 Eisai had requested a re-examination of the prior negative opinion adopted by the CHMP in July 2024. In accordance with European Medicines Agency regulatory process, the European Commission is expected to make a final decision on the marketing authorization application (MAA) of lecanemab based on the CHMP recommendation within 67 days of receipt of CHMP opinion.2  

Lecanemab selectively binds to soluble Aβ aggregates (protofibrils**), as well as insoluble Aβ aggregates (fibrils) which are a major component of Aβ plaques in AD, thereby reducing both Aβ protofibrils and Aβ plaques in the brain.3,4,5

AD currently affects an estimated 6.9 million people in Europe,6 and this figure is expected to nearly double by 2050 as aging populations increase.7 AD progresses in stages that increase in severity over time, and each stage of the disease presents different challenges for those living with AD and their care partners. There is a significant unmet need for new treatment options that slow down the progression of early AD and reduce the overall burden on people affected by AD and society.

Eisai serves as the lead for lecanemab’s development and regulatory submissions globally with both Eisai and Biogen co-commercializing and co-promoting the product and Eisai having final decision-making authority.

* Apolipoprotein E is a protein involved in the metabolism of fats in humans. It is implicated in AD.
** Protofibrils are believed to contribute to the brain injury that occurs with AD and are considered to be the most toxic form of Aβ, having a primary role in the cognitive decline of this progressive, debilitating condition.8 Protofibrils cause injury to neurons in the brain which, in turn, can negatively impact cognitive function via multiple mechanisms,8 not only increasing the development of insoluble Aβ plaques but also increasing direct damage to brain cell membranes and the connections that transmit signals between nerve cells or nerve cells and other cells. It is believed the reduction of protofibrils may slow the progression of AD by reducing damage to neurons in the brain and cognitive dysfunction.9

MEDIA CONTACTS 
Eisai Co., Ltd.
Public Relations Department
TEL: +81 (0)3-3817-5120

Eisai Europe, Ltd.
EMEA Communications Department
+44 (0) 797 487 9419
Emea-comms@eisai.net

Eisai Inc. (U.S.)
Libby Holman
+1-201-753-1945
Libby_Holman@Eisai.com
Biogen Inc.
Jack Cox
+ 1-781-464-3260
public.affairs@biogen.com

  
INVESTOR CONTACTS 
Eisai Co., Ltd.
Investor Relations Department
TEL: +81 (0) 3-3817-5122
Biogen Inc.
Stephen Amato
+ 1-781-464-2442
IR@biogen.com
  

Notes to Editors

1. About lecanemab (generic name, brand name: Leqembi®)
Lecanemab is the result of a strategic research alliance between Eisai and BioArctic. It is a humanized immunoglobulin gamma 1 (IgG1) monoclonal antibody directed against aggregated soluble (protofibril) and insoluble forms of amyloid-beta (Aβ).

Lecanemab’s Positive Opinion from the CHMP in the European Union was primarily based on Phase 3 data from Eisai’s global Clarity AD clinical trial, in which it met its primary endpoint and all key secondary endpoints with statistically significant results.1,3 Clarity AD was a Phase 3 global, placebo-controlled, double-blind, parallel-group, randomized study in 1,795 patients with early AD (MCI or mild dementia due to AD, with confirmed presence of amyloid pathology), of which 1,466 were in the recommended indicated population (ApoE ε4 non-carriers or heterozygotes ). The treatment group was administered lecanemab 10 mg/kg bi-weekly, with participants allocated in a 1:1 ratio to receive either placebo or lecanemab for 18 months.1

The primary endpoint was the global cognitive and functional scale, CDR-SB.1 In the Clarity AD clinical trial, treatment with lecanemab, in the recommended indicated population (ApoE ε4 non-carriers or heterozygotes), reduced clinical decline on CDR-SB by 31% at 18 months compared to placebo based on conservative control based imputation.1 The mean CDR-SB score at baseline was approximately 3.2 in both groups.1 The adjusted least-squares mean change from baseline at 18 months was 1.217 with lecanemab and 1.752 with placebo (difference, −0.535; 95% confidence interval [CI], −0.778 to −0.293; P=0.00001).1 CDR-SB is a global cognitive and functional scale that measures six domains of functioning, including memory, orientation, judgement and problem solving, community affairs, home and hobbies, and personal care.10

In addition, the secondary endpoint from the AD Cooperative Study-Activities of Daily Living Scale for Mild Cognitive Impairment (ADCS-MCI-ADL), which measures information provided by people caring for patients with AD, noted 33% less decline compared to placebo at 18 months.1 The adjusted mean change from baseline at 18 months in the ADCS-MCI-ADL score was −3.873 in the lecanemab group and −5.809 in the placebo group (difference, 1.936; 95% CI, 1.029 to 2.844; P=0.00002).1 The ADCS-MCI-ADL assesses the ability of patients to function independently, including being able to dress, feed themselves and participate in community activities.

In the ApoE ε4 heterozygotes or non-carriers population, the most common adverse reactions were infusion-related reaction (26%), ARIA-H (13%), headache (11%) and ARIA-E (9%).1

Lecanemab has been approved in the U.S., Japan, China, South Korea, Hong Kong, Israel, the United Arab Emirates and Great Britain and is under regulatory review in 17 countries. A supplemental Biologics License Application (sBLA) for intravenous maintenance dosing was submitted to the U.S. Food and Drug Administration (FDA) in March 2024, which was accepted in June 2024. In May 2024, the rolling submission of a Biologics License Application (BLA) for maintenance dosing of a subcutaneous injection formulation, which is being developed to enhance convenience for patients, was initiated in the U.S. under Fast Track status, with the rolling submission and completed in October 2024.

Since July 2020 the Phase 3 clinical study (AHEAD 3-45) for individuals with preclinical AD, meaning they are clinically normal and have intermediate or elevated levels of amyloid in their brains, is ongoing. AHEAD 3-45 is conducted as a public-private partnership between the Alzheimer's Clinical Trial Consortium that provides the infrastructure for academic clinical trials in AD and related dementias in the U.S, funded by the National Institute on Aging, part of the National Institutes of Health, Eisai and Biogen. Since January 2022, the Tau NexGen clinical study for Dominantly Inherited AD (DIAD), that is conducted by Dominantly Inherited Alzheimer Network Trials Unit (DIAN-TU), led by Washington University School of Medicine in St. Louis, is ongoing and includes lecanemab as the backbone anti-amyloid therapy.

2. About the Collaboration between Eisai and Biogen for AD
Eisai and Biogen have been collaborating on the joint development and commercialization of AD treatments since 2014. Eisai serves as the lead of lecanemab development and regulatory submissions globally with both companies co-commercializing and co-promoting the product and Eisai having final decision-making authority.

3. About the Collaboration between Eisai and BioArctic for AD
Since 2005, Eisai and BioArctic have had a long-term collaboration regarding the development and commercialization of AD treatments. Eisai obtained the global rights to study, develop, manufacture and market lecanemab for the treatment of AD pursuant to an agreement with BioArctic in December 2007. The development and commercialization agreement on the antibody lecanemab back-up was signed in May 2015.

4. About Eisai Co., Ltd.
Eisai's Corporate Concept is "to give first thought to patients and people in the daily living domain, and to increase the benefits that health care provides." Under this Concept (also known as human health care (hhc) Concept), we aim to effectively achieve social good in the form of relieving anxiety over health and reducing health disparities. With a global network of R&D facilities, manufacturing sites and marketing subsidiaries, we strive to create and deliver innovative products to target diseases with high unmet medical needs, with a particular focus in our strategic areas of Neurology and Oncology.

In addition, we demonstrate our commitment to the elimination of neglected tropical diseases (NTDs), which is a target (3.3) of the United Nations Sustainable Development Goals (SDGs), by working on various activities together with global partners.

For more information about Eisai, please visit www.eisai.com (for global headquarters: Eisai Co., Ltd.), and connect with us on X, LinkedIn and Facebook. The website and social media channels are intended for audiences outside of the UK and Europe. For audiences based in the UK and Europe, please visit www.eisai.eu and Eisai EMEA LinkedIn.

5. About Biogen
Founded in 1978, Biogen is a leading biotechnology company that pioneers innovative science to deliver new medicines to transform patient’s lives and to create value for shareholders and our communities. We apply deep understanding of human biology and leverage different modalities to advance first-in-class treatments or therapies that deliver superior outcomes. Our approach is to take bold risks, balanced with return on investment to deliver long-term growth.

The company routinely posts information that may be important to investors on its website at www.biogen.com. Follow Biogen on social media – Facebook, LinkedIn, X, YouTube.

Biogen Safe Harbor
This news release contains forward-looking statements, including about the potential clinical effects of lecanemab; the potential benefits, safety and efficacy of lecanemab; potential regulatory discussions, submissions and approvals and the timing thereof; the treatment of Alzheimer's disease; the anticipated benefits and potential of Biogen's collaboration arrangements with Eisai; the potential of Biogen's commercial business and pipeline programs, including lecanemab; and risks and uncertainties associated with drug development and commercialization. These statements may be identified by words such as "aim," "anticipate," "believe," "could," "estimate," "expect," "forecast," "intend," "may," "plan," "possible," "potential," "will," "would" and other words and terms of similar meaning. Drug development and commercialization involve a high degree of risk, and only a small number of research and development programs result in commercialization of a product. Results in early-stage clinical studies may not be indicative of full results or results from later stage or larger scale clinical studies and do not ensure regulatory approval. You should not place undue reliance on these statements.

These statements involve risks and uncertainties that could cause actual results to differ materially from those reflected in such statements, including without limitation unexpected concerns that may arise from additional data, analysis or results obtained during clinical studies; the occurrence of adverse safety events; risks of unexpected costs or delays; the risk of other unexpected hurdles; regulatory submissions may take longer or be more difficult to complete than expected; regulatory authorities may require additional information or further studies, or may fail or refuse to approve or may delay approval of Biogen's drug candidates, including lecanemab; actual timing and content of submissions to and decisions made by the regulatory authorities regarding lecanemab; uncertainty of success in the development and potential commercialization of lecanemab; failure to protect and enforce Biogen's data, intellectual property and other proprietary rights and uncertainties relating to intellectual property claims and challenges; product liability claims; and third party collaboration risks, results of operations and financial condition. The foregoing sets forth many, but not all, of the factors that could cause actual results to differ from Biogen's expectations in any forward-looking statement. Investors should consider this cautionary statement as well as the risk factors identified in Biogen's most recent annual or quarterly report and in other reports Biogen has filed with the U.S. Securities and Exchange Commission. These statements speak only as of the date of this news release. Biogen does not undertake any obligation to publicly update any forward-looking statements.

References

1 Committee for Medicinal Products for Human Use. 2024. Leqembi (Lecanemab). Overview. Last accessed: November 2024
2 European Medicines Agency. The Centralised Procedure at the EMA. Available at: https://www.ema.europa.eu/en/about-us/what-we-do/authorisation-medicines. Last accessed: November 2024.
3 van Dyck, H., et al. Lecanemab in Early Alzheimer’s Disease. New England Journal of Medicine. 2023;388:9-21. https://www.nejm.org/doi/full/10.1056/NEJMoa2212948.
4 AlzForum. 2021. Lecanemab Sweeps Up Toxic Aβ Protofibrils, Catches Eyes of Trialists. Available at: https://www.alzforum.org/news/conference-coverage/lecanemab-sweeps-toxic-av-protofibrils-catches-eyes-trialists. Last accessed: February 2024.
5 Sehlin D, Englund H, Simu B, Karlsson M, Ingelsson M, Nikolajeff F, Lannfelt L, Pettersson FE. Large aggregates are the major soluble Aβ species in AD brain fractionated with density gradient ultracentrifugation. PLoS One. 2012;7(2):e32014. https://doi.org/10.1371/journal.pone.0032014 Epub 2012 Feb 15. PMID: 22355408; PMCID: PMC3280222.
6 Gustavsson, A., et al. Global estimates on the number of persons across the Alzheimer's disease continuum. Alzheimer’s & Dementia. 2023;19:658-670. https://alz-journals.onlinelibrary.wiley.com/doi/full/10.1002/alz.12694.
7 Alzheimer Europe. Prevalence of dementia in Europe. Available at: https://www.alzheimer-europe.org/dementia/prevalence-dementia-europe.
8 Amin L, Harris DA. Aβ receptors specifically recognize molecular features displayed by fibril ends and neurotoxic oligomers. Nat Commun. 2021;12:3451. doi:10.1038/s41467-021-23507-z
9 Ono K, Tsuji M. Protofibrils of Amyloid-β are Important Targets of a Disease-Modifying Approach for Alzheimer's Disease. Int J Mol Sci. 2020;21(3):952. doi: 10.3390/ijms21030952. PMID: 32023927; PMCID: PMC7037706.
10 Morris, J.C. The Clinical Dementia Rating (CDR): current version and scoring rules. Neurology. 1993;43:2412-2414.


FAQ

What was the CHMP recommendation for lecanemab (BIIB) in Europe?

The CHMP recommended approval of lecanemab for treating adult patients with mild cognitive impairment and mild dementia due to early Alzheimer's disease, specifically for ApoE ε4 non-carriers or heterozygotes with confirmed amyloid pathology.

How effective was lecanemab (BIIB) in clinical trials?

In the Clarity AD clinical trial, lecanemab showed a 31% reduction in clinical decline compared to placebo at 18 months, and demonstrated 33% less decline in daily living activities.

What are the main side effects of lecanemab (BIIB)?

The most common adverse reactions were infusion-related reactions (26%), ARIA-H (13%), headache (11%), and ARIA-E (9%) in the ApoE ε4 heterozygotes or non-carriers population.

When will the European Commission make a final decision on lecanemab (BIIB)?

The European Commission is expected to make a final decision within 67 days of receiving the CHMP positive opinion.

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