Pemphigoid, Bullous

$374 million in fourth quarter and $1.2 billion in full year global net product sales sBLA for VYVGART® Hytrulo for CIDP accepted for priority review by FDA with PDUFA target action date of June 21, 2024 On track to report data from six Phase 2 proof-of-concept trials by end of 2024 Management to host conference call today at 2:30 pm CET (8:30 am ET) February 29, 2024, 7:00 am CET Amsterdam, the Netherlands – argenx SE (Euronext & Nasdaq: ARGX), a global immunology company committed to improving the lives of people suffering from severe autoimmune diseases, today reported financial results for the full year 2023 and provided a fourth quarter business update. “argenx reached thousands of new patients and their families in 2023 by delivering on our commitment to make VYVGART available to the global MG community,” said Tim Van Hauwermeiren, Chief Executive Officer of argenx. “This expansion demonstrates that VYVGART has the potential to address the high unmet need for innovation in patients suffering from MG, and moves us closer to sustainability as we build an integrated immunology company. Clinically, we generated significant data through multiple study readouts, achieving key milestones for both the CIDP and MMN patient communities and importantly advancing our second molecule, empasiprubart. Looking forward to 2024, we will act with a continued sense of purpose to expand our patient reach. We will use the learnings and momentum from our gMG launch to strategically lay the groundwork for a potential CIDP approval, leveraging our current infrastructure and deep relationships in the neurology community to position VYVGART SC for success. CIDP patients have been waiting for innovation, and we are eager to translate the transformative ADHERE data into potential benefit for patients as quickly as possible.” FOURTH QUARTER 2023 AND RECENT BUSINESS UPDATE Reaching More Patients with VYVGART VYVGART® (efgartigimod alfa-fcab) is a first-in-class antibody fragment targeting the neonatal Fc receptor (FcRn), and is now approved in more than 30 countries globally for the treatment of generalized myasthenia gravis (gMG). VYVGART subcutaneous (SC) (efgartigimod alfa and hyaluronidase-qvfc) is approved in the U.S. (as VYVGART Hytrulo), Japan (as VYVDURA®) and Europe, making VYVGART the only gMG treatment available as both an IV and simple SC injection. argenx is planning to reach more patients commercially through its multi-dimensional expansion efforts, including patients earlier in the MG treatment paradigm and new patient populations through global regulatory approvals for MG and the expansion of use to treat additional autoimmune indications. Generated global net product revenues (inclusive of both VYVGART and VYVGART SC) of $374 million in the fourth quarter and $1.2 billion in the full year of 2023Medicines and Healthcare products Regulatory Agency (MHRA) approved VYVGART SC in the United Kingdom for the treatment of adult patients with gMG on February 6, 2024, with self-administrationMinistry of Health, Labour and Welfare (MHLW) approved VYVDURA in Japan for the treatment of adult patients with gMG, inclusive of seronegative patients, on January 18, 2024, with self-administrationDecisions on regulatory approvals of VYVGART for gMG expected in Switzerland, Australia, Saudi Arabia and South Korea by end of 2024Decision on approval of VYVGART SC for gMG in China through Zai Lab expected by end of 2024Decision on approval of VYVGART for primary immune thrombocytopenia (ITP) in Japan expected in first quarter of 2024Supplemental Biologics License Application (sBLA) for VYVGART Hytrulo accepted for priority review by FDA for chronic inflammatory demyelinating polyneuropathy (CIDP); Prescription Drug User Fee Act (PDUFA) target action date of June 21, 2024Regulatory submissions of VYVGART SC for CIDP in Japan, Europe, China and Canada expected in 2024Registrational studies to expand VYVGART label into broader MG populations, including in seronegative patients, expected to start in 2024Update on pre-filled syringe development expected in first half of 2024; ongoing clinical studies expected to support potential approval in gMG and CIDP in 2024 Advancing Current Pipeline argenx continues to demonstrate breadth and depth within its immunology pipeline and is advancing multiple pipeline-in-a-product candidates. With efgartigimod, argenx is solidifying its leadership in FcRn and is on track to be approved or in development in 15 autoimmune indications by 2025. Beyond efgartigimod, argenx is advancing its earlier stage pipeline programs, including empasiprubart (C2 inhibitor) with Phase 2 studies ongoing in multifocal motor neuropathy (MMN), delayed graft function (DGF) and dermatomyositis (DM). In addition, argenx is evaluating ARGX-119, a muscle-specific kinase (MuSK) agonist in both congenital myasthenic syndrome (CMS) and amyotrophic lateral sclerosis (ALS). Evaluation ongoing to determine path forward in BALLAD study evaluating efgartigimod in bullous pemphigoid (BP), with an update expected in 2024Topline data from Phase 2 RHO study evaluating efgartigimod in primary Sjogren’s syndrome expected in first half of 2024Topline data from Phase 2 ALPHA study evaluating efgartigimod in post-COVID-19 postural orthostatic tachycardia syndrome (PC-POTS) expected in first half of 2024Topline data from seamless Phase 2/3 ALKIVIA study evaluating efgartigimod across three myositis subsets (immune-mediated necrotizing myopathy (IMNM), anti-synthetase syndrome (ASyS), and DM) expected in second half of 2024Full Phase 2 topline data from ARDA study evaluating empasiprubart in MMN expected to be shared in 2024; cohort 2 is ongoing to determine dose response ahead of Phase 3 study startPhase 1 study of ARGX-119 ongoing in healthy volunteers; subsequent Phase 1b/2a trials planned to assess early signal detection in patients with CMS and ALS in 2024 Leveraging Repeatable Innovation Playbook to Drive Long-Term Pipeline Growth argenx continues to invest in its discovery engine, the Immunology Innovation Program (IIP), to drive long-term sustainable pipeline growth. Through the IIP, four new pipeline candidates have been nominated, including: ARGX-213 targeting FcRn and further solidifying argenx’s leadership in this new class of medicine; ARGX-121 and ARGX-220, which are first-in-class targets broadening argenx’s focus across the immune system; and ARGX-109, targeting IL-6, which plays an important role in inflammation. On track to file four investigational new drug (IND) applications by end of 2025Received $30M milestone from AbbVie for advancement of ABBV-151 (ARGX-115) to Phase 2 FOURTH QUARTER AND FULL YEAR 2023 FINANCIAL RESULTS argenx SE UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF PROFIT OR LOSS Three Months Ended December 31, Twelve Months Ended December 31, (in thousands of $ except for shares and EPS) 2023 2022 2023 2022Product net sales $374,351 $173,396 $1,190,783 $400,720Collaboration revenue 32,486 764 35,533 10,026Other operating income 11,003 7,956 42,278 34,520Total operating income $417,840 $182,116 $1,268,594 $445,267 Cost of sales $(39,477) $(12,786) $(117,835) $(29,431)Research and development expenses (306,373) (147,798) (859,492) (663,366)Selling, general and administrative expenses (208,826) (135,287) (711,905) (472,132)Loss from investment in joint venture (1,788) (677) (4,411) (677)Total operating expenses (556,464) (296,548) (1,693,643) (1,165,607) Operating loss $(138,624) $(114,432) $(425,049) $(720,341) Financial income $40,308 $13,925 $107,386 $27,665Financial expense (280) (990) (906) (3,906)Exchange gains/(losses) 37,418 60,259 14,073 (32,732) Loss for the period before taxes $(61,178) $(41,238) $(304,496) $(729,314)Income tax benefit / (expense) $(37,994) $2,625 $9,443 $19,720Loss for the period $(99,172) $(38,613) $(295,053) $(709,594)Loss for the year attributable to: Owners of the parent $(99,172) $(38,613) $(295,053) $(709,594)Weighted average number of shares outstanding 59,118,827 55,364,124 57,169,253 54,381,371Basis and diluted (loss) per share (in $) (1.68) (0.70) (5.16) (13.05)Net increase/(decrease) in cash, cash equivalents and current financial assets compared to year-end 2022 and 2021 $987,296 $(144,180)Cash and cash equivalents and current financial assets at the end of the period $3,179,844 $2,192,548 DETAILS OF THE FINANCIAL RESULTS Total operating income for the fourth quarter and full year in 2023 was $418 million and $1,269 million, respectively, compared to $182 million and $445 million for the same periods in 2022, and mainly consists of: Product net sales of VYVGART and VYVGART SC for the fourth quarter and full year in 2023, were $374 million and $1,191 million, respectively, compared to $173 million and $401 million for the same periods in 2022.Collaboration revenue for the fourth quarter and full year in 2023 was $32 million and $36 million, respectively, compared to $1 million and $10 million for the same periods in 2022. The increase is mainly related to the clinical development milestone argenx achieved with AbbVie following the dosing of the first patient in the Phase 2 trial for ABBV-151. Collaboration revenue for full year in 2023 also includes $1 million in royalty revenue from VYVGART sales in China.Other operating income for the fourth quarter and full year in 2023 was $11 million and $42 million, respectively, compared to $8 million and $35 million for the same periods in 2022. The other operating income for the fourth quarter and full year in 2023, primarily relates to research and development tax incentives and payroll tax rebates. Total operating expenses for the fourth quarter and full year in 2023 were $556 million and $1,694 million, respectively, compared to $297 million and $1,166 million for the same periods in 2022, and mainly consists of: Cost of sales for the fourth quarter and full year in 2023 was $39 million and $118 million, respectively, compared to $13 million and $29 million for the same periods in 2022. The cost of sales was recognized with respect to the sale of VYVGART and VYVGART SC.Research and development expenses for the fourth quarter and full year in 2023 were $306 million and $859 million, respectively, compared to $148 million and $663 million for the same periods in 2022. The research and development expenses mainly relate to external research and development expenses and personnel expenses incurred in the clinical development of efgartigimod in various indications and the expansion of other clinical and preclinical pipeline candidates. The research and development expenses for the fourth quarter and the full year in 2023, includes the amortization of the priority review voucher submitted with the sBLA filling for VYVGART Hytrulo for the treatment of CIDP, which resulted in an expense of $102 million.Selling, general and administrative expenses for the fourth quarter and full year in 2023 were $209 million and $712 million, respectively, compared to $135 million and $472 million for the same periods in 2022. The selling, general and administrative expenses mainly relate to professional and marketing fees linked to the commercialization of VYVGART and VYVGART SC, and personnel expenses. Financial income for the fourth quarter and full year in 2023 was $40 million and $107 million, respectively, compared to $14 million and $28 million for the same periods in 2022. The increase in financial income is mainly due to an increase in interest income which results from higher interest rates and a higher amount of current financial assets, cash and cash equivalents as a result of the financing round in July 2023. Exchange gains for the fourth quarter and full year in 2023 were $37 million and $14 million respectively, compared to $60 million of exchange gains and $33 million of exchange losses for the same periods in 2022. Exchange gains/losses are mainly attributable to unrealized exchange rate gains or losses on the cash, cash equivalents and current financial assets denominated in Euro. Income tax for the fourth quarter and full year in 2023 was $38 million of tax expense and $9 million of tax benefit, respectively, compared to $3 million and $20 million of tax benefit for the same periods in 2022. Tax expense for the fourth quarter in 2023, consists of $12 million of income tax benefit and $50 million of deferred tax expense, compared to $12 million of income tax expense and $15 million of deferred tax benefit for the comparable prior period. Net loss for the fourth quarter and full year in 2023, was $99 million and $295 million, respectively, compared to $39 million and $710 million over the prior year periods. On a per weighted average share basis, the net loss was $5.16 and $13.05 for the twelve months ended December 31, 2023 and 2022, respectively. Cash, cash equivalents and current financial assets totalled $3.2 billion as of December 31, 2023, compared to $2.2 billion as of December 31, 2022. The increase in cash and cash equivalents and current financial assets resulted primarily from the closing of a global offering of shares, including a U.S. offering, which resulted in the receipt of $1.2 billion in net proceeds in July 2023, partially offset by net cash flows used in operating activities. FINANCIAL GUIDANCE Based on its current operating plans, argenx expects its combined Research and development and Selling, general and administrative expenses in 2024 to be less than $2 billion. argenx expects to utilize up to $500 million of net cash in 2024 on these anticipated operating expenses as well as working capital and capital expenditures. EXPECTED 2024 FINANCIAL CALENDAR May 9, 2024: Q1 2024 financial results and business updateJuly 25, 2024: Q2 2024 financial results and business updateOctober 31, 2024: Q3 2024 financial results and business update CONFERENCE CALL DETAILS The full year 2023 financial results and fourth quarter business update will be discussed during a conference call and webcast presentation today at 2:30 pm CET/8:30 am ET. A webcast of the live call may be accessed on the Investors section of the argenx website at argenx.com/investors. A replay of the webcast will be available on the argenx website. Dial-in numbers: Please dial in 15 minutes prior to the live call. Belgium 32 800 50 201France 33 800 943355Netherlands 31 20 795 1090United Kingdom 44 800 358 0970United States 1 888 415 4250Japan 81 3 4578 9081Switzerland 41 43 210 11 32 About argenx argenx is a global immunology company committed to improving the lives of people suffering from severe autoimmune diseases. Partnering with leading academic researchers through its Immunology Innovation Program (IIP), argenx aims to translate immunology breakthroughs into a world-class portfolio of novel antibody-based medicines. argenx developed and is commercializing the first approved neonatal Fc receptor (FcRn) blocker, globally in the U.S., Japan, Israel, the EU, the UK, China and Canada. The Company is evaluating efgartigimod in multiple serious autoimmune diseases and advancing several earlier stage experimental medicines within its therapeutic franchises. For more information, visit www.argenx.com and follow us on LinkedIn, Twitter, and Instagram. For further information, please contact: Media:Ben Petokbpetok@argenx.com Investors:Alexandra Roy (US)aroy@argenx.com Lynn Elton (EU)lelton@argenx.com Forward-looking Statements The contents of this announcement include statements that are, or may be deemed to be, “forward-looking statements.” These forward-looking statements can be identified by the use of forward-looking terminology, including the terms “plans,” “aims,” “continues,” “anticipates,” “expects,” “will,” or “commitment” and include statements argenx makes concerning its utilization of its learnings and momentum from its gMG launch for a potential CIDP approval and to position VYVGART SC for success; its plans to expand its patient reach, including through its multidimensional expansion efforts aimed at including patients earlier in the MG treatment paradigm and pursuing global regulatory approvals for MG as well as additional autoimmune indications; our goal to translate the ADHERE data into potential benefit for patients; the advancement of, and anticipated clinical development, data readouts and regulatory milestones and plans, including: (1) expected decisions on regulatory approvals of VYVGART for gMG in Switzerland, Australia, Saudi Arabia and South Korea by end of 2024, (2) expected decisions on approval of VYVGART SC for gMG in China through Zai Lab by end of 2024, (3) expected decisions on approval of VYVGART for ITP in Japan in the first quarter of 2024, (4) expected regulatory submissions of VYVGART SC of CIDP in Japan, Europe, China and Canada in 2024, (5) the expansion of our VYVGART registrational studies into broader MG populations, including in seronegative patients, expected to start in 2024, (6) the update on pre-filled syringe development expected in the first half of 2024, (7) clinical studies expected to support potential approval in gMG and CIDP in 2024, (8) expected update on the path forward for BALLAD study in 2024, (9) expected topline data from Phase 2 RHO in the first half of 2024, (10) expected topline data from Phase 2 ALPHA study in the first half of 2024, (11) expected topline data from Phase 2/3 ALKIVIA in the second half of 2024, (12) the full Phase 2 topline data from ARDA study expected in 2024, (13) planned Phase 1b/2a clinical trials of ARGX-119 in 2024, (14) four IND applications expected to be filed by end of 2025, (15) expected data from six Phase 2 proof-of-concept trials by the end of 2024, and (16) the expected approval or development in 15 autoimmune indications by 2025; the potential of its continued investment in its IIP to drive long-term sustainable pipeline growth; its future financial and operating performance, including its anticipated operating expenses and utilization of net cash for 2024; and our goal of translating immunology breakthroughs into a world-class portfolio of novel antibody-based medicines. By their nature, forward-looking statements involve risks and uncertainties and readers are cautioned that any such forward-looking statements are not guarantees of future performance. argenx’s actual results may differ materially from those predicted by the forward-looking statements as a result of various important factors, including but not limited to, the results of argenx’s clinical trials, expectations regarding the inherent uncertainties associated with development of novel drug therapies, preclinical and clinical trial and product development activities and regulatory approval requirements, the acceptance of our products and product candidates by our patients as safe, effective and cost-effective, and the impact of governmental laws and regulations on our business. A further list and description of these risks, uncertainties and other risks can be found in argenx’s U.S. Securities and Exchange Commission (SEC) filings and reports, including in argenx’s most recent annual report on Form 20-F filed with the SEC as well as subsequent filings and reports filed by argenx with the SEC. Given these uncertainties, the reader is advised not to place any undue reliance on such forward-looking statements. These forward-looking statements speak only as of the date of publication of this document. argenx undertakes no obligation to publicly update or revise the information in this press release, including any forward-looking statements, except as may be required by law.

NORTHAMPTON, MA / ACCESSWIRE / February 29, 2024 / Quest Diagnostics No-cost laboratory testing: Fourth-year dental student, Tyesha Younger MS, and Mark Mintline DDS diagnose a case of pemphigus vulgaris as part of the Biopsies Save Lives program. Photo credit: WesternU In honor of Rare Disease Day on February 29, we're highlighting a program dedicated to diagnosing and treating patients in underserved communities in Southern California affected by the rare autoimmune diseases pemphigus and pemphigoid, which can be life-threatening if left untreated. Last year, we announced that Quest Diagnostics teamed up with Western University of Health Sciences (WesternU) to offer no-cost diagnostic testing services to support Biopsies Save Lives as part of the Quest for Health Equity (Q4HE) initiative. The program offers no-cost testing to patients who are low-income, uninsured, and/or underinsured and who also have rare erosive and blistering diseases, and enables faster diagnosis and treatment of these conditions. Since the collaboration between Q4HE and WesternU started, the Biopsies Save Lives program has helped lead to the potentially life-saving diagnosis of 3 patients affected by these rare diseases. "We are very thankful to Quest Diagnostics and their Quest for Health Equity initiative for supporting the Biopsies Save Lives program," said WesternU Health Oral Pathology Laboratory Director Mark Mintline, DDS. "Biopsies Save Lives breaks down financial barriers to laboratory testing and turns the scariest part of healthcare-waiting for results from a potentially life-changing test-into one that is most welcoming, supportive, and educational. The no-cost laboratory testing that Quest is providing has been critical for our patients, and the support has been a blessing for underserved communities with erosive and blistering diseases in Los Angeles County." Through Biopsies Save Lives, patients better understand their blistering diseases, how to ask their providers questions, and are connected to expert dermatologists. "This is a great, real-world example of how we are working together to create a healthier world, one life at a time, and highlights the positive impact our work has on patients," said Cynita Smith-Watson, Senior Manager, Regional Contracting for Q4HE. Rare Disease Day is an observance held on the last day of February to raise awareness of rare diseases and improve access to treatment and medical representation for individuals with rare diseases and their families. To learn more about the Biopsies Save Lives program, visit . View additional multimedia and more ESG storytelling from Quest Diagnostics on 3blmedia.com. Contact Info: Spokesperson: Quest Diagnostics Website: Email: info@3blmedia.com SOURCE: Quest Diagnostics View the original press release on accesswire.com

Priority Review granted based on positive results from two Phase 3 trials; if approved, Dupixent would be the only biologic therapy for COPD and the first new treatment approach for this disease in more than a decade Regulatory submissions are also under review in China and Europe Dupixent is the leading biologic treatment for all five of its FDA-approved indications in new-to-brand prescriptions in the U.S. TARRYTOWN, N.Y. and PARIS, Feb. 23, 2024 (GLOBE NEWSWIRE) -- Regeneron Pharmaceuticals, Inc. (NASDAQ: REGN) and Sanofi today announced that the U.S. Food and Drug Administration (FDA) has accepted for Priority Review the supplemental Biologics License Application (sBLA) for Dupixent® (dupilumab) in a sixth potential indication as an add-on maintenance treatment in certain adult patients with uncontrolled chronic obstructive pulmonary disease (COPD). The target action date for the FDA decision is June 27, 2024. Regulatory submissions are under review in China and Europe. The sBLA, as well as other submissions around the world, is supported by data from the Phase 3 COPD clinical research program evaluating the efficacy and safety of Dupixent in adults who were current or former smokers with uncontrolled COPD with evidence of type 2 inflammation (i.e., blood eosinophils ≥300 cells per μL). All patients were on background maximal standard-of-care inhaled therapy (nearly all on triple therapy). The primary endpoint was met in both trials (BOREAS, NOTUS), showing Dupixent significantly reduced annualized moderate or severe acute COPD exacerbations by 30% and 34%, respectively, compared to placebo. In both trials, Dupixent rapidly and significantly improved lung function compared to placebo, with improvements sustained at 52 weeks. Safety results in both trials were generally consistent with the known safety profile of Dupixent in its approved indications. Adverse events more commonly observed with Dupixent (≥5%) compared to placebo in either trial were back pain, COVID-19, diarrhea, headache and nasopharyngitis. Priority Review is granted to regulatory applications seeking approval for therapies that have the potential to provide significant improvements in the treatment, diagnosis or prevention of serious conditions. The potential use of Dupixent in COPD is currently under clinical development, and its safety and efficacy for this indication have not been fully evaluated by any regulatory authority. About COPDCOPD is a respiratory disease that damages the lungs and causes progressive lung function decline. Symptoms include persistent cough, breathlessness and excessive mucus production 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. 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. There have been no new treatment approaches approved for more than a decade. In the U.S., approximately 300,000 people live with uncontrolled COPD with evidence of type 2 inflammation.About Regeneron and Sanofi’s COPD Clinical Research ProgramRegeneron and Sanofi 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. Itepekimab is currently under clinical investigation, with two Phase 3 trials currently enrolling, and its safety and efficacy have not been evaluated by any regulatory authority. About DupixentDupixent, which was invented using Regeneron’s proprietary VelocImmune® technology, 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), prurigo nodularis and chronic spontaneous urticaria (CSU). Dupixent has received regulatory approvals in one or more countries around the world for use in certain patients with atopic dermatitis, asthma, CRSwNP, EoE, prurigo nodularis or CSU 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. Approximately 800,000 patients are being treated with Dupixent globally. About Regeneron's VelocImmune® TechnologyRegeneron's VelocImmune technology utilizes a proprietary genetically engineered mouse platform endowed with a genetically humanized immune system to produce optimized fully human antibodies. When Regeneron's co-Founder, President and Chief Scientific Officer George D. Yancopoulos was a graduate student with his mentor Frederick W. Alt in 1985, they were the first to envision making such a genetically humanized mouse, and Regeneron has spent decades inventing and developing VelocImmune and related VelociSuite® technologies. Dr. Yancopoulos and his team have used VelocImmune technology to create a substantial portion of all original, FDA-approved or authorized fully human monoclonal antibodies. This includes REGEN-COV® (casirivimab and imdevimab), Dupixent, Libtayo® (cemiplimab-rwlc), Praluent® (alirocumab), Kevzara® (sarilumab), Evkeeza® (evinacumab-dgnb) and Inmazeb® (atoltivimab, maftivimab and odesivimab-ebgn). Dupilumab Development ProgramDupilumab is being jointly developed by Regeneron and Sanofi 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, Regeneron and Sanofi are studying dupilumab in a broad range of diseases driven by type 2 inflammation or other allergic processes in Phase 3 trials, including 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. U.S. INDICATIONS DUPIXENT is a prescription medicine used: to treat adults and children 6 months of age and older with moderate-to-severe eczema (atopic dermatitis or AD) that is not well controlled with prescription therapies used on the skin (topical), or who cannot use topical therapies. DUPIXENT can be used with or without topical corticosteroids. It is not known if DUPIXENT is safe and effective in children with atopic dermatitis under 6 months of age.with other asthma medicines for the maintenance treatment of moderate-to-severe eosinophilic or oral steroid dependent asthma in adults and children 6 years of age and older whose asthma is not controlled with their current asthma medicines. DUPIXENT helps prevent severe asthma attacks (exacerbations) and can improve your breathing. DUPIXENT may also help reduce the amount of oral corticosteroids you need while preventing severe asthma attacks and improving your breathing. DUPIXENT is not used to treat sudden breathing problems. It is not known if DUPIXENT is safe and effective in children with asthma under 6 years of age.with other medicines for the maintenance treatment of chronic rhinosinusitis with nasal polyposis (CRSwNP) in adults whose disease is not controlled. It is not known if DUPIXENT is safe and effective in children with chronic rhinosinusitis with nasal polyposis under 18 years of age.to treat adults and children 1 year of age and older with eosinophilic esophagitis (EoE), who weigh at least 33 pounds (15 kg). It is not known if DUPIXENT is safe and effective in children with eosinophilic esophagitis under 1 year of age, or who weigh less than 33 pounds (15 kg).to treat adults with prurigo nodularis (PN). It is not known if DUPIXENT is safe and effective in children with prurigo nodularis under 18 years of age. IMPORTANT SAFETY INFORMATION Do not use if you are allergic to dupilumab or to any of the ingredients in DUPIXENT®. Before using DUPIXENT, tell your healthcare provider about all your medical conditions, including if you: have eye problems.have a parasitic (helminth) infection.are scheduled to receive any vaccinations. You should not receive a “live vaccine” right before and during treatment with DUPIXENT.are pregnant or plan to become pregnant. It is not known whether DUPIXENT will harm your unborn baby. A pregnancy registry for women who take DUPIXENT during pregnancy collects information about the health of you and your baby. To enroll or get more information call 1-877-311-8972 or go to https://mothertobaby.org/ongoing-study/dupixent/. are breastfeeding or plan to breastfeed. It is not known whether DUPIXENT passes into your breast milk. Tell your healthcare provider about all the medicines you take, including prescription and over-the- counter medicines, vitamins, and herbal supplements. Especially tell your healthcare provider if you are taking oral, topical, or inhaled corticosteroid medicines; have asthma and use an asthma medicine; or have atopic dermatitis, chronic rhinosinusitis with nasal polyposis, eosinophilic esophagitis, or prurigo nodularis and also have asthma. Do not change or stop your corticosteroid medicine or other asthma medicine without talking to your healthcare provider. This may cause other symptoms that were controlled by the corticosteroid medicine or other asthma medicine to come back. DUPIXENT can cause serious side effects, including: Allergic reactions. DUPIXENT can cause allergic reactions that can sometimes be severe. Stop using DUPIXENT and tell your healthcare provider or get emergency help right away if you get any of the following signs or symptoms: breathing problems or wheezing, swelling of the face, lips, mouth, tongue or throat, fainting, dizziness, feeling lightheaded, fast pulse, fever, hives, joint pain, general ill feeling, itching, skin rash, swollen lymph nodes, nausea or vomiting, or cramps in your stomach-area.Eye problems. Tell your healthcare provider if you have any new or worsening eye problems, including eye pain or changes in vision, such as blurred vision. Your healthcare provider may send you to an ophthalmologist for an exam if needed.Inflammation of your blood vessels. Rarely, this can happen in people with asthma who receive DUPIXENT. This may happen in people who also take a steroid medicine by mouth that is being stopped or the dose is being lowered. It is not known whether this is caused by DUPIXENT. Tell your healthcare provider right away if you have: rash, chest pain, worsening shortness of breath, a feeling of pins and needles or numbness of your arms or legs, or persistent fever.Joint aches and pain. Some people who use DUPIXENT have had trouble walking or moving due to their joint symptoms, and in some cases needed to be hospitalized. Tell your healthcare provider about any new or worsening joint symptoms. Your healthcare provider may stop DUPIXENT if you develop joint symptoms. The most common side effects include: Eczema: injection site reactions, eye and eyelid inflammation, including redness, swelling, and itching, sometimes with blurred vision, dry eye, cold sores in your mouth or on your lips, and high count of a certain white blood cell (eosinophilia).Asthma: injection site reactions, high count of a certain white blood cell (eosinophilia), pain in the throat (oropharyngeal pain), and parasitic (helminth) infections.Chronic Rhinosinusitis with Nasal Polyposis: injection site reactions, eye and eyelid inflammation, including redness, swelling, and itching, sometimes with blurred vision, high count of a certain white blood cell (eosinophilia), gastritis, joint pain (arthralgia), trouble sleeping (insomnia), and toothache.Eosinophilic Esophagitis: injection site reactions, upper respiratory tract infections, cold sores in your mouth or on your lips, and joint pain (arthralgia).Prurigo Nodularis: eye and eyelid inflammation, including redness, swelling, and itching, sometimes with blurred vision, herpes virus infections, common cold symptoms (nasopharyngitis), dizziness, muscle pain, and diarrhea. Tell your healthcare provider if you have any side effect that bothers you or that does not go away. These are not all the possible side effects of DUPIXENT. Call your doctor for medical advice about side effects. You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch, or call 1-800-FDA-1088. Use DUPIXENT exactly as prescribed by your healthcare provider. It’s an injection given under the skin (subcutaneous injection). Your healthcare provider will decide if you or your caregiver can inject DUPIXENT. Do not try to prepare and inject DUPIXENT until you or your caregiver have been trained by your healthcare provider. In children 12 years of age and older, it’s recommended DUPIXENT be administered by or under supervision of an adult. In children 6 months to less than 12 years of age, DUPIXENT should be given by a caregiver. Please see accompanying full Prescribing Information including Patient Information. About Regeneron Regeneron (NASDAQ: REGN) is a leading biotechnology company that invents, develops and commercializes life-transforming medicines for people with serious diseases. Founded and led for over 35 years by physician-scientists, our unique ability to repeatedly and consistently translate science into medicine has led to numerous FDA-approved treatments and 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, hematologic conditions, infectious diseases and rare diseases. Regeneron is accelerating and improving the traditional drug development process through our proprietary VelociSuite® technologies, such as VelocImmune®, which uses unique genetically humanized mice to produce optimized fully human antibodies and bispecific antibodies, and through ambitious research initiatives such as the Regeneron Genetics Center, which is conducting one of the largest genetics sequencing efforts in the world. For more information about Regeneron, please visit www.Regeneron.com or follow Regeneron on LinkedIn. About SanofiWe are an innovative global healthcare company, driven by one purpose: we chase the miracles of science to improve people's lives. Our team, across some 100 countries, is dedicated to transforming the practice of medicine by working to turn the impossible into the possible. We provide potentially life-changing treatment options and life-saving vaccine protection to millions of people globally, while putting sustainability and social responsibility at the center of our ambitions. Sanofi is listed on EURONEXT: SAN and NASDAQ: SNY. Regeneron Forward-Looking Statements and Use of Digital MediaThis press release includes forward-looking statements that involve risks and uncertainties relating to future events and the future performance of Regeneron Pharmaceuticals, Inc. (“Regeneron” or the “Company”), and actual events or results may differ materially from these forward-looking statements. Words such as “anticipate,” “expect,” “intend,” “plan,” “believe,” “seek,” “estimate,” variations of such words, and similar expressions are intended to identify such forward-looking statements, although not all forward-looking statements contain these identifying words. These statements concern, and these risks and uncertainties include, among others, the nature, timing, and possible success and therapeutic applications of products marketed or otherwise commercialized by Regeneron and/or its collaborators or licensees (collectively, “Regeneron’s Products”) and product candidates being developed by Regeneron and/or its collaborators or licensees (collectively, “Regeneron’s Product Candidates”) and research and clinical programs now underway or planned, including without limitation Dupixent® (dupilumab) and itepekimab for the treatment of chronic obstructive pulmonary disease (“COPD”); the likelihood, timing, and scope of possible regulatory approval and commercial launch of Regeneron’s Product Candidates and new indications for Regeneron’s Products, such as Dupixent and itepekimab for the treatment of COPD (including, in the case of Dupixent, based on the supplemental Biologics License Application discussed in this press release) as well as Dupixent for the treatment of chronic spontaneous urticaria, chronic pruritus of unknown origin, chronic obstructive pulmonary disease with evidence of type 2 inflammation, bullous pemphigoid, and other potential indications; uncertainty of the utilization, market acceptance, and commercial success of Regeneron’s Products and Regeneron’s Product Candidates and the impact of studies (whether conducted by Regeneron or others and whether mandated or voluntary), including the studies discussed or referenced in this press release, on any of the foregoing or any potential regulatory approval of Regeneron’s Products (such as Dupixent) and Regeneron’s Product Candidates (such as itepekimab); the ability of Regeneron’s collaborators, licensees, suppliers, or other third parties (as applicable) to perform manufacturing, filling, finishing, packaging, labeling, distribution, and other steps related to Regeneron’s Products and Regeneron’s Product Candidates; the ability of Regeneron to manage supply chains for multiple products and product candidates; safety issues resulting from the administration of Regeneron’s Products (such as Dupixent) and Regeneron’s Product Candidates (such as itepekimab) in patients, including serious complications or side effects in connection with the use of Regeneron’s Products and Regeneron’s Product Candidates in clinical trials; determinations by regulatory and administrative governmental authorities which may delay or restrict Regeneron’s ability to continue to develop or commercialize Regeneron’s Products and Regeneron’s Product Candidates; ongoing regulatory obligations and oversight impacting Regeneron’s Products, research and clinical programs, and business, including those relating to patient privacy; the availability and extent of reimbursement of Regeneron’s Products from third-party payers, including private payer healthcare and insurance programs, health maintenance organizations, pharmacy benefit management companies, and government programs such as Medicare and Medicaid; coverage and reimbursement determinations by such payers and new policies and procedures adopted by such payers; competing drugs and product candidates that may be superior to, or more cost effective than, Regeneron’s Products and Regeneron’s Product Candidates; the extent to which the results from the research and development programs conducted by Regeneron and/or its collaborators or licensees may be replicated in other studies and/or lead to advancement of product candidates to clinical trials, therapeutic applications, or regulatory approval; unanticipated expenses; the costs of developing, producing, and selling products; the ability of Regeneron to meet any of its financial projections or guidance and changes to the assumptions underlying those projections or guidance; the potential for any license, collaboration, or supply agreement, including Regeneron’s agreements with Sanofi and Bayer (or their respective affiliated companies, as applicable) to be cancelled or terminated; the impact of public health outbreaks, epidemics, or pandemics (such as the COVID-19 pandemic) on Regeneron's business; and risks associated with intellectual property of other parties and pending or future litigation relating thereto (including without limitation the patent litigation and other related proceedings relating to EYLEA® (aflibercept) Injection), other litigation and other proceedings and government investigations relating to the Company and/or its operations, the ultimate outcome of any such proceedings and investigations, and the impact any of the foregoing may have on Regeneron’s business, prospects, operating results, and financial condition. A more complete description of these and other material risks can be found in Regeneron’s filings with the U.S. Securities and Exchange Commission, including its Form 10-K for the year ended December 31, 2023. Any forward-looking statements are made based on management’s current beliefs and judgment, and the reader is cautioned not to rely on any forward-looking statements made by Regeneron. Regeneron does not undertake any obligation to update (publicly or otherwise) any forward-looking statement, including without limitation any financial projection or guidance, whether as a result of new information, future events, or otherwise. Regeneron uses its media and investor relations website and social media outlets to publish important information about the Company, including information that may be deemed material to investors. Financial and other information about Regeneron is routinely posted and is accessible on Regeneron's media and investor relations website (https://investor.regeneron.com) and its LinkedIn page (https://www.linkedin.com/company/regeneron-pharmaceuticals) Sanofi Disclaimers or Forward-Looking StatementsThis press release contains forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995, as amended. Forward-looking statements are statements that are not historical facts. These statements include projections and estimates regarding the marketing and other potential of the product, or regarding potential future revenues from the product. Forward-looking statements are generally identified by the words “expects”, “anticipates”, “believes”, “intends”, “estimates”, “plans” and similar expressions. Although Sanofi’s management believes that the expectations reflected in such forward-looking statements are reasonable, investors are cautioned that forward-looking information and statements are subject to various risks and uncertainties, many of which are difficult to predict and generally beyond the control of Sanofi, that could cause actual results and developments to differ materially from those expressed in, or implied or projected by, the forward-looking information and statements. These risks and uncertainties include among other things, unexpected regulatory actions or delays, or government regulation generally, that could affect the availability or commercial potential of the product, the fact that product may not be commercially successful, the uncertainties inherent in research and development, including future clinical data and analysis of existing clinical data relating to the product, including post marketing, unexpected safety, quality or manufacturing issues, competition in general, risks associated with intellectual property and any related future litigation and the ultimate outcome of such litigation, and volatile economic and market conditions, and the impact that pandemics or other global crises may have on us, our customers, suppliers, vendors, and other business partners, and the financial condition of any one of them, as well as on our employees and on the global economy as a whole. The risks and uncertainties also include the uncertainties discussed or identified in the public filings with the SEC and the AMF made by Sanofi, including those listed under “Risk Factors” and “Cautionary Statement Regarding Forward-Looking Statements” in Sanofi’s annual report on Form 20-F for the year ended December 31, 2022. Other than as required by applicable law, Sanofi does not undertake any obligation to update or revise any forward-looking information or statements. Regeneron Contacts:Media RelationsHannah KwaghTel: +1 914-847-6314Hannah.Kwagh@regeneron.comInvestor RelationsVesna TosicTel: +1 914-847-5443Vesna.Tosic@regeneron.com Sanofi Contacts:Media RelationsTimothy Gilbert Tel: +1 516 521 2929Timothy.Gilbert@sanofi.comInvestor RelationsEva Schaefer-JansenTel: +33 7 86 80 56 39Eva.Schaefer-Jansen@sanofi.comVictor Rouault  Tel: +33 6 70 93 71 40Victor.Rouault@sanofi.comArnaud DelepineTel: +33 (0)6 73 69 36 93Arnaud.Delepine@sanofi.comEvan BerlandTel: +1 215 432 0234evan.berland@sanofi.comCorentine DriancourtTel: +33 (0)6 40 56 92 21Corentine.Driancourt@sanofi.comSally BainTel: +1 617-834-6026Sally.Bain@sanofi.comFelix LauscherTel: +1 908-612-7239Felix.Lauscher@sanofi.com Tarik ElgoutniTel: +1 617-710-3587Tarik.Elgoutni@sanofi.com Nathalie PhamTel: +33 (0)7 85 93 30 17Nathalie.Pham@sanofi.com