Press Release: Dupixent® (dupilumab) late-breaking Phase 3 COPD results presented at ATS and simultaneously published in the New England Journal of Medicine

Dupixent® (dupilumab) late-breaking Phase 3 COPD results presented at ATS and simultaneously published in the New England Journal of Medicine Dupixent is the first and only investigational biologic for COPD that has demonstrated a significant reduction in moderate or severe acute exacerbations by 30% compared to placeboDupixent is the first and only investigational biologic for COPD that has significantly improved lung function at 12 and 52 weeks, with numerical improvements seen as early as 2 weeksDupixent significantly improved quality of life, with numerical improvements as early as 4 weeks after initiating treatment, and respiratory symptoms COPD is the third leading cause of death worldwide, with no new treatment approaches approved in more than a decade; trial enrolled patients with moderate-to-severe disease and evidence of type 2 inflammation (i.e., blood eosinophils ≥300 cells/µL) Paris and Tarrytown, N.Y. May 21, 2023. Positive Phase 3 results evaluating the investigational use of Dupixent® (dupilumab) compared to placebo in adults currently on maximal standard-of-care inhaled therapy (triple therapy) with uncontrolled chronic obstructive pulmonary disease (COPD) and evidence of type 2 inflammation were shared today in the 2023 American Thoracic Society (ATS) International Conference session “New England Journal of Medicine and JAMA. Discussion on the Edge: Reports of Recently Published Pulmonary Research” and simultaneously published in the New England Journal of Medicine (NEJM). These results will also be presented in the “Breaking News: Clinical Trial Results in Pulmonary Medicine” session on May 22. Surya Bhatt, M.D., MSPHAssociate Professor at the University of Alabama at Birmingham Division of Pulmonary, Allergy, and Critical Care Medicine, and a co-principal investigator of the trial”I’ve seen patients with uncontrolled chronic obstructive pulmonary disease struggle for far too long with the debilitating symptoms of this progressive disease – with limited, incremental improvement on current treatment options. This trial showed that dupilumab has the potential to impact the vicious cycle of exacerbations and lung function decline in patients with uncontrolled COPD with type 2 inflammation, and significantly improve respiratory symptoms. Dupilumab also helped improve health-related quality of life measures, which, from my years of experience as a physician, are just as meaningful for patients as being able to breathe easier.” COPD is a life-threatening respiratory disease that damages the lungs and causes progressive lung function decline. Symptoms include persistent cough and breathlessness that may not only impair the ability to perform routine daily activities, but can also lead to anxiety, depression and sleep disturbances. COPD is also associated with a significant health and economic burden due to recurrent acute exacerbations that require systemic corticosteroid treatment and/or lead to hospitalization or even death. Smoking and exposure to noxious particles are key risk factors for COPD, but even individuals who quit smoking can still develop or continue having the disease. In the U.S. alone, approximately 300,000 people live with uncontrolled COPD with evidence of type 2 inflammation. The results presented at ATS and published in NEJM are from the BOREAS trial, which met the primary and all key secondary endpoints. As presented and published, patients receiving Dupixent (n=468) compared to placebo (n=471) added to maximal standard-of-care inhaled triple therapy experienced a: 30% reduction in moderate or severe acute COPD exacerbations over 52 weeks (p<0.001), the primary endpoint.160 mL improvement in lung function from baseline at 12 weeks versus 77 mL (p<0.001). Numerical improvements were observed as early as 2 weeks, with the benefit versus placebo sustained through 52 weeks (Dupixent: 153 mL, placebo: 70 mL; p<0.001). 9.7-point improvement in health-related quality of life (QoL; patient-reported outcome on a scale from 0-100) from baseline at 52 weeks versus a 6.4-point improvement (p=0.002), with numerical improvements observed as early as 4 weeks. 2.7-point reduction in respiratory symptom severity (patient-reported outcome on a scale from 0-40) from baseline at 52 weeks versus a 1.6-point reduction (p=0.001). In a pre-specified analysis from a subgroup of patients (Dupixent n=195, placebo n=188) with elevated levels (≥20 ppb) of fractional exhaled nitric oxide (FeNO) – an airway biomarker of type 2 inflammation – Dupixent treatment also led to a significant 38% reduction in exacerbations compared to placebo at 52 weeks (p=0.005). In this subgroup, Dupixent also led to an improvement in lung function of 232 mL versus 108 mL for placebo at 12 weeks (p=0.002) that was sustained at 52 weeks with an improvement in lung function of 247 mL versus 120 mL for placebo (p=0.003). The safety results were generally consistent with the known safety profile of Dupixent in its approved indications. Overall rates of adverse events (AEs) were 77% for Dupixent and 76% for placebo. AEs more commonly observed with Dupixent compared to placebo included headache (8.1% Dupixent, 6.8% placebo), diarrhea (5.3% Dupixent, 3.6% placebo) and back pain (5.1% Dupixent, 3.4% placebo). AEs more commonly observed with placebo compared to Dupixent included upper respiratory tract infection (9.8% placebo, 7.9% Dupixent), hypertension (6.0% placebo, 3.6% Dupixent) and COVID-19 (5.7% placebo, 4.1% Dupixent). AEs leading to deaths were balanced between the two arms (1.7% placebo, 1.5% Dupixent). The second, replicate Phase 3 trial of Dupixent in COPD with evidence of type 2 inflammation (NOTUS) is ongoing, with data expected in 2024. The safety and efficacy of Dupixent in COPD are currently under clinical investigation and have not been evaluated by any regulatory authority. Sanofi and Regeneron look forward to discussing the BOREAS data with regulators. About the Dupixent COPD Phase 3 Trial ProgramBOREAS is one of two pivotal trials in the Dupixent COPD program. The randomized, Phase 3, double-blind, placebo-controlled trial evaluated the efficacy and safety of Dupixent in 939 adults who were current or former smokers aged 40 to 80 years with moderate-to-severe COPD. All patients in the trial had evidence of type 2 inflammation, as measured by blood eosinophils ≥300 cells/µL. Patents with a diagnosis or history of asthma were excluded from the trial. During the 52-week treatment period, patients received Dupixent or placebo every two weeks added to a maximal standard-of-care inhaled triple therapy of inhaled corticosteroids (ICS), long-acting beta agonists, and long-acting muscarinic antagonists. Double maintenance therapy was allowed if ICS was contraindicated. The primary endpoint evaluated the annualized rate of acute moderate or severe COPD exacerbations. Moderate exacerbations were defined as those requiring systemic steroids and/or antibiotics. Severe exacerbations were defined as those: requiring hospitalization; requiring more than a day of observation in an emergency department or urgent care facility; or resulting in death. Key secondary and other hierarchy endpoints included: Change from baseline in lung function (assessed by pre-bronchodilator forced expiratory volume over one second [FEV1]) at 12 and 52 weeks in both the overall population and those with FeNO ≥ 20 ppb. Change from baseline at 52 weeks in St. George’s Respiratory Questionnaire (SGRQ) total score compared to placebo (scale from 0-100). Change from baseline at 52 weeks in the Evaluating Respiratory Symptoms in COPD (E-RS: COPD) scale score (scale from 0-40).The annualized rate of acute moderate or severe COPD exacerbations in patients with FeNO ≥ 20 ppb. About Sanofi and Regeneron’s COPD Clinical Research ProgramSanofi and Regeneron are motivated to transform the treatment paradigm of COPD by examining the role different types of inflammation play in the disease progression through the investigation of two potentially first-in-class biologics, Dupixent and itepekimab. Dupixent inhibits the signaling of the interleukin-4 (IL-4) and interleukin-13 (IL-13) pathways and the program focuses on a specific population of people with evidence of type 2 inflammation. Itepekimab is a fully human monoclonal antibody that binds to and inhibits interleukin-33 (IL-33), an initiator and amplifier of broad inflammation in COPD. Across both programs, four Phase 3 trials are ongoing and designed to inform next-generation treatments for people with COPD who might not have other options. Itepekimab is currently under clinical investigation and its safety and efficacy have not been evaluated by any regulatory authority. About DupixentDupixent is a fully human monoclonal antibody that inhibits the signaling of the interleukin-4 (IL-4) and interleukin-13 (IL-13) pathways and is not an immunosuppressant. The Dupixent development program has shown significant clinical benefit and a decrease in type 2 inflammation in Phase 3 trials, establishing that IL-4 and IL-13 are key and central drivers of the type 2 inflammation that plays a major role in multiple related and often co-morbid diseases. These diseases include approved indications for Dupixent, such as atopic dermatitis, asthma, chronic rhinosinusitis with nasal polyposis (CRSwNP), eosinophilic esophagitis (EoE) and prurigo nodularis. Dupixent has received regulatory approvals in one or more countries around the world for use in certain patients with atopic dermatitis, asthma, CRSwNP, EoE or prurigo nodularis in different age populations. Dupixent is currently approved for one or more of these indications in more than 60 countries, including in Europe, the U.S. and Japan. More than 600,000 patients are being treated with Dupixent globally. Dupilumab Development ProgramDupilumab is being jointly developed by Sanofi and Regeneron under a global collaboration agreement. To date, dupilumab has been studied across more than 60 clinical trials involving more than 10,000 patients with various chronic diseases driven in part by type 2 inflammation. In addition to the currently approved indications, Sanofi and Regeneron are studying dupilumab in a broad range of diseases driven by type 2 inflammation or other allergic processes in Phase 3 trials, including pediatric EoE, chronic spontaneous urticaria, chronic pruritus of unknown origin, chronic obstructive pulmonary disease with evidence of type 2 inflammation and bullous pemphigoid. These potential uses of dupilumab are currently under clinical investigation, and the safety and efficacy in these conditions have not been fully evaluated by any regulatory authority. About RegeneronRegeneron (NASDAQ: REGN) is a leading biotechnology company that invents, develops and commercializes life-transforming medicines for people with serious diseases. Founded and led for 35 years by physician-scientists, our unique ability to repeatedly and consistently translate science into medicine has led to nine FDA-approved treatments and numerous product candidates in development, almost all of which were homegrown in our laboratories. Our medicines and pipeline are designed to help patients with eye diseases, allergic and inflammatory diseases, cancer, cardiovascular and metabolic diseases, pain, hematologic conditions, infectious diseases and rare diseases. 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