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The New England Journal of Medicine Publishes Positive Phase 2 Data on Litifilimab (BIIB059) in Cutaneous Lupus Erythematosus

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Biogen Inc. (Nasdaq: BIIB) today announced that The New England Journal of Medicine (NEJM) has published positive results from the cutaneous lupus erythematosus (CLE) portion of the two-part Phase 2 LILAC study (Part B) evaluating litifilimab (known as BIIB059), an investigational drug for the treatment of lupus. Litifilimab met its primary endpoint by demonstrating superior efficacy to placebo in reducing skin disease activity.

“CLE can have a lasting negative impact on skin symptoms and emotional aspects of people’s lives, leading to a debilitating impact on quality of life and irreversible skin damage,” said Victoria Werth, M.S., M.D., Professor of Dermatology at the University of Pennsylvania’s Perelman School of Medicine. “Despite advancements over the past two decades, CLE represents a high unmet medical need with no cure. The LILAC study is among the first randomized controlled trials in CLE and I am encouraged by the publication of these positive results in NEJM.”

Biogen has progressed litifilimab to late-stage development and is actively enrolling participants with systemic lupus erythematosus into the Phase 3 TOPAZ-1 and TOPAZ-2 studies, with plans to initiate a pivotal study in CLE this year. Litifilimab has a novel mechanism of action that engages blood dendritic cell antigen 2 (BDCA2), a receptor solely expressed on the surface of plasmacytoid dendritic cells, resulting in decreased production of type 1 interferons, cytokines and chemokines at the site of inflammation such as the skin.1

“Litifilimab was developed by Biogen scientists as a potential first-in-class therapy for lupus,” said Nathalie Franchimont, M.D., Ph.D., Head of the Multiple Sclerosis and Immunology Development Unit at Biogen. “These Phase 2 data underscore our goal of delivering meaningful new therapies to people with cutaneous lupus, an autoimmune disease affecting the skin that can occur with or without impacting other organs, who currently have limited treatment options. We are excited to progress this promising candidate into late-stage development to further evaluate its potential, particularly in those who historically have been underserved.”

The Phase 2 LILAC Part B Results: LILAC was a randomized, double-blind, placebo-controlled study that evaluated the efficacy and safety of litifilimab versus placebo in two parts: Part A in participants who had systemic lupus erythematosus (SLE) with active joint and skin manifestations; and Part B in participants with moderate-to-severe active CLE, including active subacute and chronic subtypes, with or without systemic manifestations. As previously reported,2,3 both Part A and Part B of the study met their respective primary endpoints, with litifilimab demonstrating superior efficacy to placebo in reducing total active joint count and improving skin disease activity in participants with SLE and CLE, respectively.

Part B of the LILAC study assessed multiple doses of litifilimab or placebo in participants with active, histologically confirmed CLE. The primary analysis included a test of dose-response to assess whether there was a response across the four dose groups (placebo, 50, 150, or 450 mg litifilimab, administered subcutaneously at weeks 0, 2, 4, 8, and 12) on the basis of the primary endpoint of skin disease activity. This Phase 2 trial was not powered to assess secondary endpoints.

The LILAC study population in Part B was representative of the broader CLE patient population, with approximately 10 percent of participants who reported race and ethnicity identifying as Black or African American. In Part B, litifilimab demonstrated a significant dose-response relationship based on the percent change from baseline in the Cutaneous Lupus Erythematosus Disease Area and Severity Index (CLASI-A) score (primary endpoint), a measure of skin disease activity, at Week 16.

In Part B, litifilimab was generally well tolerated, with most reported adverse events (AEs) rated as mild or moderate. The most common AEs reported in ≥5% of participants in the pooled litifilimab groups were nasopharyngitis, headache, injection-site erythema, SLE, arthralgia, upper respiratory tract infection, influenza, pruritus, and cough.

Detailed findings for Part A of LILAC, which enrolled participants with SLE with active joint and skin manifestations, will be published separately in a peer-reviewed journal.

Litifilimab (known as BIIB059), discovered and developed in-house by Biogen scientists, is a humanized IgG1 monoclonal antibody (mAb) targeting blood dendritic cell antigen 2 (BDCA2) and is being investigated for the potential treatment of systemic lupus erythematosus (SLE) and cutaneous lupus erythematosus (CLE). BDCA2 is a receptor that is exclusively expressed on a subset of human immune cells called Plasmacytoid Dendritic Cells (pDCs), and it has been shown to reduce inflammatory production from pDCs, including type-I IFN (IFN-I) as well as other cytokines and chemokines. These inflammatory mediators are thought to play a major role in the pathogenesis of systemic and cutaneous lupus.

CLE, a type of lupus, is a chronic autoimmune skin disease that can occur with or without systemic manifestations; people with CLE frequently experience symptoms including rash, pain, pruritis (itch) and photosensitivity as well as skin damage that may worsen over time and can include irreversible scarring alopecia and dyspigmentation that can be disfiguring and substantially impact quality of life.4-7

Although anyone can develop lupus, an estimated 90 percent of people living with lupus are women; most begin to see symptoms between the ages of 15-40.6 The disease disproportionately impacts diverse ethno-racial groups, including African American, Asian, American Indian/Alaskan Native and Hispanic/Latino communities.9-12 There is currently no cure for lupus.

Decades of study by Biogen on pathways at the intersection of neurology and immunology provide the company with expertise in specialized immunology. Biogen is advancing two lupus therapies in Phase 3 trials. Dapirolizumab pegol is being developed in collaboration with UCB for systemic lupus erythematosus (SLE). The second, litifilimab (BIIB059), was fully developed in-house at Biogen and is now in Phase 3 for SLE, with plans for further study in CLE.


References

  1. Furie R, Werth VP, Merola JF, et al (2019). Monoclonal antibody targeting BDCA2 ameliorates skin lesions in systemic lupus erythematosus. J Clin Invest. 129:1359–1371.
  2. Furie R, et al. Efficacy and Safety Results from a Phase 2, Randomized, Double-Blind Trial of BIIB059, an Anti-Blood Dendritic Cell Antigen 2 Antibody, in SLE [abstract]. Arthritis Rheumatol. 2020; 72 (suppl 10). https://acrabstracts.org/abstract/efficacy-and-safety-results-from-a-phase-2-randomized-double-blind-trial-of-biib059-an-anti-blood-dendritic-cell-antigen-2-antibody-in-sle/.
  3. Werth V, et al. BIIB059, a Humanized Monoclonal Antibody Targeting Blood Dendritic Cell Antigen 2 on Plasmacytoid Dendritic Cells, Shows Dose-Related Efficacy in a Phase 2 Study in Participants with Active Cutaneous Lupus Erythematosus [abstract]. Arthritis Rheumatol. 2020; 72 (suppl 10). https://acrabstracts.org/abstract/biib059-a-humanized-monoclonal-antibody-targeting-blood-dendritic-cell-antigen-2-on-plasmacytoid-dendritic-cells-shows-dose-related-efficacy-in-a-phase-2-study-in-participants-with-active-cutaneous/.
  4. Ogunsanya ME, Brown CM, Lin D, et al (2018). Understanding the disease burden and unmet needs among patients with cutaneous lupus erythematosus: A qualitative study. Int J Womens Dermatol. 4(3):152-158.
  5. Ogunsanya ME, Cho SK, Hudson A, Chong, BF (2019). Validation and reliability of a disease-specific quality of life measure in patients with cutaneous lupus erythematosus. Br J Dermatol. 180(6):1430-1437.
  6. Méndez-Flores S, Orozco-Topete R, Bermúdez-Bermejo P, Hernández-Molina G (2013). Pain and pruritus in cutaneous lupus: their association with dermatologic quality of life and disease activity. Clin Exp Rheumatol. 31(6):940-942.
  7. Foering K, Chang AY, Piette EW, et al (2013). Characterization of clinical photosensitivity in cutaneous lupus erythematosus. J Am Acad Dermatol. 69(2):205-213.
  8. Pons-Estel GJ, Ugarte-Gil MF, Alarcón GS (2017). Epidemiology of systemic lupus erythematosus. Expert Rev Clin Immunol. 13(8):799-814.
  9. Izmirly PM, Parton H, Wang L, et al (2021). Prevalence of systemic lupus erythematosus in the United States: Estimates from a meta-analysis of the Centers for Disease Control and Prevention National Lupus Registries. Arthritis Rheumatol. 73(6):991-996.
  10. Lim SS, Helmick CG, Bao G, et al (2019). Racial disparities in mortality associated with systemic lupus erythematosus – Fulton and DeKalb Counties, Georgia, 2002-2016. MMWR Morb Mortal Wkly Rep. 68(18):419-422.
  11. Rees F, Doherty M, Grainge MJ, et al (2017). The worldwide incidence and prevalence of systemic lupus erythematosus: a systematic review of epidemiological studies. Rheumatology (Oxford). 56(11):1945-1961.
  12. Drenkard C, Lim SS (2019). Update on lupus epidemiology: advancing health disparities research through the study of minority populations. Curr Opin Rheumatol. 31(6):689-696.

 

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