Celltrion

  STEQEYMA®, one of the first-wave biosimilars to STELARA®, is now available in the U.S. Approved for the same indications as the reference product, STEQEYMA will be priced with a wholesale acquisition cost (WAC) list price at an 85% discount to the current WAC list price of STELARA to help improve patient access to high-quality biologic treatments[1] With the launch of STEQEYMA, Celltrion expands its immunology portfolio beyond tumor necrosis factor (TNF)-alpha inhibitors, to include interleukin (IL)-12 and IL-23 inhibitors, broadening treatment options for multiple immune-mediated diseases Celltrion has nine biosimilars and five immunology biologics granted marketing authorization in the U.S. JERSEY CITY, N.J., March 12, 2025 - Celltrion today announced the U.S. launch of STEQEYMA® (ustekinumab-stba), a biosimilar to STELARA® (ustekinumab), following approval by the U.S. Food and Drug Administration (FDA) in December 2024. STEQEYMA is approved for the same indications as STELARA, providing consistency in treatment for patients and healthcare providers.[1] STEQEYMA is indicated for the treatment of plaque psoriasis (PsO) and psoriatic arthritis (PsA) in adult and pediatric patients, as well as Crohn's disease (CD) and ulcerative colitis (UC) in adult patients. It is available in both subcutaneous injection and intravenous infusion.[1] "Chronic inflammatory diseases such as plaque psoriasis and psoriatic arthritis place significant burden on patients," said Mark G. Lebwohl*, MD, Icahn School of Medicine at Mount Sinai, New York. "Biosimilars increase access to essential therapies, while maintaining the same high standards as the reference product. The availability of STEQEYMA provides patients and healthcare providers a cost-effective alternative to manage chronic inflammatory diseases." STEQEYMA will be priced with a WAC list price at an 85% discount to the current WAC list price of STELARA to help improve patient access to high-quality biologic treatments. The FDA approval of STEQEYMA was based on the totality of evidence, including the results from a Phase III study in adults with moderate to severe plaque psoriasis, in which the primary endpoint was the rate of change in the Psoriasis Area and Severity Index (PASI) for skin symptoms. The clinical results demonstrated that STEQEYMA and its reference product, ustekinumab, are highly similar, and have no clinically meaningful differences in terms of safety and efficacy. [2],[3] "The introduction of STEQEYMA in the U.S., as one of the first-wave biosimilars to STELARA, marks an important step in our ongoing efforts to expand patient access to high-quality biologic treatments," said Thomas Nusbickel, Chief Commercial Officer at Celltrion USA. "With this launch, we are expanding our immunology portfolio beyond TNF-alpha to include IL-12/23 inhibitors, offering more options for multiple immune-mediated diseases. To further enhance accessibility, Celltrion is actively collaborating with key pharmacy benefit managers to secure broader formulary coverage for STEQEYMA." STEQEYMA is supported by Celltrion's comprehensive patient and practice support programs, designed to assist patients throughout their treatment journey. Celltrion offers a suite of resources, including Celltrion CONNECT® Patient Support Program and Celltrion CARES™ Co-pay Assistance Program, benefits verification, prior authorization assistance, and co-pay assistance. Eligible patients with private or commercial insurance may pay as little as $0 out of pocket per dose. Patients who are uninsured may be eligible to receive STEQEYMA through the Celltrion CONNECT® Patient Assistance Program (PAP). Additionally, nurses will be available to answer patient questions and provide injection support. Visit www.CelltrionConnect.com to learn more. Celltrion has nine biosimilars approved by the FDA, demonstrating its established leadership in the biosimilar development space and its commitment to advancing high-quality treatments. STEQEYMA has also received approval in key global markets, including the European Union, Canada and Australia.  Notes to Editors:*Dr. Mark Lebwohl is a paid consultant for Celltrion. About STEQEYMA® (ustekinumab-stba)STEQEYMA®, formerly known as CT-P43, is a human IL-12 and -23 antagonist indicated for multiple immune-mediated diseases. It encompasses all indications approved for the STELARA® reference product, including psoriasis (PsO), psoriatic arthritis (PsA), Crohn's disease (CD), ulcerative colitis (UC) in adults, and PsO and PsA in pediatric patients 6 years of age and older. STEQEYMA is available in both subcutaneous and intravenous formulations. The subcutaneous injection comes in two strengths: 45mg/0.5 mL or 90mg/1 mL solution in a single-dose, prefilled syringe. The intravenous infusion is provided as a 130mg/26 mL (5mg/mL) solution in a single-dose vial. INDICATIONSSTEQEYMA® (ustekinumab-stba) is indicated for the treatment of: Plaque Psoriasis (PsO) in adults and pediatric patients 6 years of age and older with moderate to severe plaque psoriasis who are candidates for phototherapy or systemic therapy. Psoriatic Arthritis (PsA) in adults and pediatric patients 6 years of age and older with active psoriatic arthritis. Crohn's Disease (CD) in adult patients with moderately to severely active Crohn's disease. Ulcerative Colitis (UC) in adult patients with moderately to severely active ulcerative colitis. IMPORTANT SAFETY INFORMATION STEQEYMA is contraindicated in patients with clinically significant hypersensitivity to ustekinumab products or to any of the excipients in STEQEYMA.  Serious infections have occurred. Avoid starting STEQEYMA during any clinically important active infection. If a serious or clinically significant infection develop, discontinue STEQEYMA until the infection resolves. Serious infections from mycobacteria, salmonella, and BCG vaccinations have been reported in patients genetically deficient in IL-12/IL-23. Consider diagnostic tests for these infections as dictated by clinical circumstances. Evaluate patients for TB prior to starting STEQEYMA. Initiate treatment of latent TB before administering STEQEYMA. Ustekinumab products may increase risk of malignancy. The safety of ustekinumab products in patients with a history of or a known malignancy has not been evaluated. Monitor all patients receiving STEQEYMA for signs of malignancies. If an anaphylactic or other clinically significant hypersensitivity reaction occurs, institute appropriate therapy and discontinue STEQEYMA. If Posterior Reversible Encephalopathy Syndrome (PRES) is suspected, treat promptly, and discontinue STEQEYMA. Avoid use of live vaccines in patients during treatment with STEQEYMA. Non-live vaccinations received during STEQEYMA treatment may not elicit enough immune response to prevent disease. If diagnosis of noninfectious pneumonia is confirmed, discontinue STEQEYMA and institute appropriate treatment. The most common adverse reactions (≥3%) reported in patients receiving ustekinumab were: Psoriasis: nasopharyngitis, upper respiratory tract infection, headache, and fatigue. CD: vomiting, nasopharyngitis, injection site erythema, vulvovaginal candidiasis/mycotic infection, bronchitis, pruritus, urinary tract infection, and sinusitis. UC: nasopharyngitis, nasopharyngitis, headache, abdominal pain, influenza, fever, diarrhea, sinusitis, fatigue, and nausea. For more information, see Full Prescribing Information. About CelltrionCelltrion is a leading biopharmaceutical company that specializes in researching, developing, manufacturing, marketing and sales of innovative therapeutics that improve people's lives worldwide. Celltrion is a pioneer in the biosimilar space, having launched the world's first monoclonal antibody biosimilar. Our global pharmaceutical portfolio addresses a range of therapeutic areas including immunology, oncology, hematology, ophthalmology and endocrinology. Beyond biosimilar products, we are committed to advancing our pipeline with novel drugs to push the boundaries of scientific innovation and deliver quality medicines. For more information, please visit our website www.celltrion.com/en-us. and stay updated with our latest news and events on our social media: LinkedIn, Instagram, X, and Facebook. About Celltrion USACelltrion USA is Celltrion's U.S. subsidiary established in 2018. Headquartered in New Jersey, Celltrion USA is committed to expanding access to innovative biologics to improve care for U.S. patients. Celltrion currently has nine biosimilars approved by the U.S. FDA: INFLECTRA® (infliximab-dyyb), TRUXIMA® (rituximab-abbs), HERZUMA® (trastuzumab-pkrb), VEGZELMA® (bevacizumab-adcd), YUFLYMA®(adalimumab-aaty), STEQEYMA® (ustekinumab-stba), AVTOZMA® (tocilizumab-anoh), OSENVELT®/ STOBOCLO® (denosumab-bmwo), and OMLYCLO® (omalizumab-igec), as well as a novel biologic ZYMFENTRA® (infliximab-dyyb). Celltrion USA will continue to leverage Celltrion's unique heritage in biotechnology, supply chain excellence and best-in-class sales capabilities to improve access to high-quality biopharmaceuticals for U.S. patients. For more information, please visit www.celltrionusa.com and stay updated with our latest news and events on our social media: LinkedIn.FORWARD-LOOKING STATEMENTCertain information set forth in this press release contains statements related to our future business and financial performance and future events or developments involving Celltrion, Inc. and its subsidiaries that may constitute forward-looking statements, under pertinent securities laws. This press release contains forward looking statements. These statements may be also identified by words such as "prepares," "hopes to," "upcoming," "plans to," "aims to," "to be launched," "is preparing," "once gained," "could," "with the aim of," "may," "once identified," "will," "working towards," "is due," "become available," "has potential to," the negative of these words or such other variations thereon or comparable terminology. In addition, our representatives may make oral forward-looking statements. Such statements are based on the current expectations and certain assumptions of Celltrion, Inc. and its subsidiaries' management, of which many are beyond its control. Forward-looking statements are provided to allow potential investors the opportunity to understand management's beliefs and opinions in respect of the future so that they may use such beliefs and opinions as one factor in evaluating an investment. These statements are not guarantees of future performance and undue reliance should not be placed on them. Such forward-looking statements necessarily involve known and unknown risks and uncertainties associated with the company's business, including the risk factors disclosed in its Annual Report and/or Quarterly Reports, which may cause actual performance and financial results in future periods to differ materially from any projections of future performance or results expressed or implied by such statements.Celltrion, Inc. and its subsidiaries undertake no obligation to update forward-looking statements if circumstances or management's estimates or opinions should change except as required by applicable securities laws. TrademarksSTELARA® is a registered trademark of Johnson & Johnson.STEQEYMA® is a registered trademark of Celltrion, Inc., used under license. References[1] STEQEYMA U.S. prescribing information (2024)[2] Papp KA et al., Efficacy and Safety of Candidate Biosimilar CT-P43 Versus Originator Ustekinumab in Moderate to Severe Plaque Psoriasis: 28-Week Results of a Randomised, Active-Controlled, Double-Blind, Phase III study. BioDrugs. 2023; Online ahead of print. Available at: https://link.springer.com/article/10.1007/s40259-023-00630-5#article-info [Last accessed February 2025][3] Papp K et al., Efficacy and Safety after Switch from Reference Ustekinumab to Ustekinumab Biosimilar (CT-P43) in comparison with the Maintenance Group (CTP43 or Reference Ustekinumab) in Patients with Moderate-to-Severe Plaque Psoriasis: 1-Year Result. [EADV 2023, Abstract #4035]. Available at: https://eadv.org/wp-content/uploads/scientific-abstracts/EADV-congress-2023/Biologics-immunotherapy-targeted-therapy.pdf [Last accessed February 2025]

OMLYCLO® (omalizumab-igec) is the first and only omalizumab biosimilar approved by the FDARegulatory approval for interchangeability was supported by positive phase III data demonstrating comparable efficacy and safety profile with the reference product XOLAIR® (omalizumab)[1]The availability of the first omalizumab biosimilar will help increase access and potentially lower the healthcare cost for people with asthma and allergic diseases JERSEY CITY, N.J., March 9, 2025 /PRNewswire/ -- Celltrion today announced the U.S. Food and Drug Administration (FDA) approved OMLYCLO® (omalizumab-igec) as the first and only biosimilar designated as interchangeable with XOLAIR® (omalizumab) for the treatment of moderate to severe persistent asthma, chronic rhinosinusitis with nasal polyps (CRSwNP), Immunoglobulin E (IgE)-mediated food allergy, and chronic spontaneous urticaria (CSU).[2]  "We are proud to achieve the approval of the first biosimilar to omalizumab in the U.S., which will help broaden access to this important medicine for patients with allergic and respiratory conditions, as well as for physicians, payers and providers," said Hetal Patel, Vice President of Medical Affairs at Celltrion USA. "The interchangeability designation of OMLYCLO reinforces confidence among physicians and patients that there is no decrease in effectiveness or increase in safety risk associated with switching between OMLYCLO and the reference product." The FDA approval and designation of interchangeability are based on comprehensive clinical evidence, including results from a global Phase III clinical trial involving 619 adult patients with CSU up to Week 40. Patients were randomized to receive 300 mg or 150 mg of OMLYCLO or reference product every 4 weeks. From Week 12, patients who received OMLYCLO were continued on OMLYCLO, and patients who received 300mg of the reference product were re-randomized in a 1:1 ratio to switch to OMLYCLO or to continue reference product. From Week 24, patients were followed up until Week 40 without dosing. The result demonstrated the comparable efficacy and safety of OMLYCLO to reference product during both treatment and off-dose periods.[1] An interchangeable biosimilar is a biosimilar that meets additional requirements outlined by the law that allows for the FDA to approve biosimilar and interchangeable biosimilar medications.[3] "The approval of OMLYCLO could have a meaningful impact for the medical community and patients, offering a high quality and affordable treatment option, while reducing the burden of healthcare costs," said Thomas Nusbickel, Chief Commercial Officer at Celltrion USA. "With our integrated development, manufacturing, and commercialization platform, Celltrion remains committed to alleviating treatment costs and delivering life-changing medicines to support patients with allergic conditions in the U.S." About OMLYCLO® (omalizumab-igec)  OMLYCLO® (omalizumab-igec) is the first U.S. Food and Drug Administration (FDA)-approved anti-IgE antibody biosimilar referencing XOLAIR® (omalizumab). OMLYCLO 75 mg/0.5 mL and 150 mg/mL solution in a single-dose prefilled syringe is approved as interchangeable with reference product for all indications based on comprehensive data and clinical evidence confirming the therapeutic equivalence to XOLAIR.[1],[2] OMLYCLO was also approved by the European Commission (EC) in May 2024. INDICATIONOMLYCLO® (omalizumab-igec) injection, is an anti-IgE antibody indicated for: Moderate to severe persistent asthma in adults and pediatric patients ≥6 years of age with a positive skin test or in vitro reactivity to a perennial aeroallergen and symptoms that are inadequately controlled with inhaled corticosteroidsChronic rhinosinusitis with nasal polyps (CRSwNP) in adult patients ≥18 years of age with inadequate response to nasal corticosteroids, as add-on maintenance treatmentIgE-mediated food allergy in adult and pediatric patients aged ≥1 year age for the reduction of allergic reactions (Type I), including anaphylaxis, that may occur with accidental exposure to one or more foods. To be used in conjunction with food allergen avoidanceChronic spontaneous urticaria (CSU) in adults and adolescents ≥12 years of age who remain symptomatic despite H1 antihistamine treatmentLimitations of Use: Not indicated for: acute bronchospasm or status asthmaticus; emergency treatment of allergic reactions, including anaphylaxis; other forms of urticaria. IMPORTANT SAFETY INFORMATION WARNING: ANAPHYLAXISAnaphylaxis presenting as bronchospasm, hypotension, syncope, urticaria, and/or angioedema of the throat or tongue, has been reported to occur after administration of omalizumab products. Anaphylaxis has occurred as early as after the first dose of omalizumab products, but also has occurred beyond 1 year after beginning regularly administered treatment. Because of the risk of anaphylaxis, initiate OMLYCLO therapy in a healthcare setting and closely observe patients for an appropriate period of time after OMLYCLO administration.Health care providers administering OMLYCLO should be prepared to manage anaphylaxis which can be life-threatening. Inform patients of the signs and symptoms of anaphylaxis and instruct them to seek immediate medical care should symptoms occur. Selection of patients for self-administration of OMLYCLO should be based on criteria to mitigate risk from anaphylaxis. Contraindications: Severe hypersensitivity reaction to OMLYCLO or any ingredient of OMLYCLO. Anaphylaxis. Omalizumab products, including OMLYCLO, have been associated with anaphylaxis, reported in both clinical trials and postmarketing data. Patients with a history of anaphylaxis to foods, medications, or other causes face an increased risk. Initiate OMLYCLO only in a healthcare setting with anaphylaxis management capabilities. Patients should be monitored for an appropriate period post-administration, informed of symptoms, and instructed to seek immediate medical care if they occur. Malignancy. Malignancies have been observed in clinical studies, with various cancer types reported. The long-term risk, especially in high-risk groups, is unknown. Acute Asthma Symptoms and Deteriorating Disease. Omalizumab products have not been shown to alleviate asthma exacerbations acutely. Do not use OMLYCLO to treat acute bronchospasm or status asthmaticus. Corticosteroid Reduction. Do not discontinue systemic or inhaled corticosteroids abruptly upon initiation of OMLYCLO therapy for asthma or CRSwNP. Eosinophilic Conditions. Be alert to eosinophilia, vasculitic rash, worsening pulmonary symptoms, cardiac complications, and/or neuropathy, especially upon reduction of oral corticosteroids. Fever, Arthralgia, and Rash. Stop OMLYCLO if a patient develops this constellation of signs and symptoms, including arthritis/arthralgia, rash, fever, and lymphadenopathy. Parasitic (Helminth) Infection. Monitor patients at high risk of geohelminth infection while on OMLYCLO therapy. Laboratory Tests. Omalizumab increases serum total IgE due to drug:IgE complexes. Do not use serum total IgE levels within one year of discontinuation to reassess dosing regimen, as they may not reflect steady-state free IgE. Potential Medication Error Related to Emergency Treatment of Anaphylaxis. OMLYCLO should not be used for the emergency treatment of allergic reactions, including anaphylaxis. Instruct patients that OMLYCLO is for maintenance use to reduce allergic reactions, including anaphylaxis, while avoiding food allergens. Most Common Adverse ReactionsAsthma: In patients ≥12 years, reported in ≥1%: arthralgia, general pain, leg pain, fatigue, dizziness, fracture, arm pain, pruritus, dermatitis, and earache. In pediatric patients (6 to <12 years), reported in ≥3%: nasopharyngitis, headache, pyrexia, upper abdominal pain, streptococcal pharyngitis, otitis media, viral gastroenteritis, arthropod bites, and epistaxis.CRSwNP: In ≥3% of adults: headache, injection site reactions, arthralgia, upper abdominal pain, and dizziness.IgE-Mediated Food Allergy: In ≥3% of patients: injection site reactions and pyrexia.CSU: In ≥2% of patients: nausea, nasopharyngitis, sinusitis, upper respiratory tract infections (viral and non-viral), arthralgia, headache, and cough. For more information, see Full Prescribing Information. About CelltrionCelltrion is a leading biopharmaceutical company that specializes in researching, developing, manufacturing, marketing and sales of innovative therapeutics that improve people's lives worldwide. Celltrion is a pioneer in the biosimilar space, having launched the world's first monoclonal antibody biosimilar. Our global pharmaceutical portfolio addresses a range of therapeutic areas including immunology, oncology, hematology, ophthalmology and endocrinology. Beyond biosimilar products, we are committed to advancing our pipeline with novel drugs to push the boundaries of scientific innovation and deliver quality medicines. For more information, please visit our website www.celltrion.com/en-us. and stay updated with our latest news and events on our social media: LinkedIn, Instagram, X, and Facebook. About Celltrion USACelltrion USA is Celltrion's U.S. subsidiary established in 2018. Headquartered in New Jersey, Celltrion USA is committed to expanding access to innovative biologics to improve care for U.S. patients. Celltrion currently has nine biosimilar products approved by the U.S. FDA: INFLECTRA® (infliximab-dyyb), TRUXIMA® (rituximab-abbs), HERZUMA® (trastuzumab-pkrb), VEGZELMA® (bevacizumab-adcd), YUFLYMA®(adalimumab-aaty), AVTOZMA® (tocilizumab-anho), STEQEYMA® (Ustekinumab-stba) STOBOCLO® (denosumab-bmwo) and OSENVELT® (denosumab-bmwo) as well as a novel biologic ZYMFENTRA® (infliximab-dyyb). Celltrion USA will continue to leverage Celltrion's unique heritage in biotechnology, supply chain excellence and best-in-class sales capabilities to improve access to high-quality biopharmaceuticals for U.S. patients. For more information, please visit www.celltrionusa.com, and stay updated with our latest news and events on our social media: LinkedIn. FORWARD-LOOKING STATEMENT Certain information set forth in this press release contains statements related to our future business and financial performance and future events or developments involving Celltrion Inc. and its subsidiaries that may constitute forward-looking statements, under pertinent securities laws. These statements may be also identified by words such as "prepares", "hopes to", "upcoming", "plans to", "aims to", "to be launched", "is preparing", "once gained", "could", "with the aim of", "may", "once identified", "will", "working towards", "is due", "become available", "has potential to", the negative of these words or such other variations thereon or comparable terminology. In addition, our representatives may make oral forward-looking statements. Such statements are based on the current expectations and certain assumptions of Celltrion Inc. and its subsidiaries' management, of which many are beyond its control. Forward-looking statements are provided to allow potential investors the opportunity to understand management's beliefs and opinions in respect to the future so that they may use such beliefs and opinions as one factor in evaluating an investment. These statements are not guarantees of future performance and undue reliance should not be placed on them. Such forward-looking statements necessarily involve known and unknown risks and uncertainties associated with the company's business, including the risk factors disclosed in its Annual Report and/or Quarterly Reports, which may cause actual performance and financial results in future periods to differ materially from any projections of future performance or results expressed or implied by such statements. Celltrion Inc. and its subsidiaries undertake no obligation to update forward-looking statements if circumstances or management's estimates or opinions should change except as required by applicable securities laws. TrademarksOMLYCLO® is a registered trademark of CELLTRION, Inc.XOLAIR® is a registered trademark of Novartis AG. References[1] Sarbjit Singh Saini et al., CT-P39 Compared With Reference Omalizumab in Chronic Spontaneous Urticaria: Results From a Double-Blind, Randomized, Active-Controlled, Phase 3 Study. Available at: https://onlinelibrary.wiley.com/doi/pdf/10.1111/all.16446?msockid=30d535870b30638b14c920090a18627c  [Last accessed March 2025][2] OMLYCLO U.S. prescribing information (2025)[3] U.S. Food and Drug Administration (FDA). Available at: https://www.fda.gov/drugs/things-know-about/9-things-know-about-biosimilars-and-interchangeable-biosimilars [Last accessed March 2025]US-OML-25-00001

STOBOCLO® (denosumab-bmwo) and OSENVELT® (denosumab-bmwo) are approved by FDA for all indications of reference products PROLIA® (denosumab) and XGEVA® (denosumab) respectively[1], [2]The FDA approval is based on robust clinical evidence, which show no clinically meaningful differences from the reference productsWith the FDA approval of STOBOCLO® (denosumab-bmwo) and OSENVELT® (denosumab-bmwo) Celltrion's biosimilar portfolio continues to grow, expanding treatment options to reach more patients JERSEY CITY, N.J., March 3, 2025 /PRNewswire/ -- Celltrion today announced that the U.S. Food and Drug Administration (FDA) has approved STOBOCLO® (CT-P41, denosumab-bmwo) and OSENVELT® (CT-P41, denosumab-bmwo), biosimilars referencing PROLIA® (denosumab) and XGEVA® (denosumab) respectively for all indications of reference products.[1], [2] "The approval of STOBOCLO and OSENVELT is another step forward in our efforts to deliver cost-effective and high-quality treatments that address critical unmet needs in osteoporosis-related fracture as well as cancer-related skeletal events," said Thomas Nusbickel, Chief Commercial Officer at Celltrion USA. "Patients deserve therapeutic options that have the potential to make real impacts on their care and their lives. We are committed to continuous innovation to meet these goals leveraging our experience and successful track record with biosimilar and novel biologics." The FDA approval is based on robust clinical evidence, including results from Phase III clinical trials in postmenopausal women with osteoporosis designed to evaluate the efficacy, pharmacodynamics (PD), pharmacokinetics (PK), safety and immunogenicity of CT-P41 to reference denosumab. Study results demonstrated that CT-P41 had equivalent efficacy and PD to reference denosumab with similar PK and comparable safety and immunogenicity profiles. "Denosumab is used to improve or protect bone health in patients with osteoporosis or those undergoing various cancer treatments and as a therapy for a lifetime for postmenopausal osteoporosis (PMO) patients," said Prof. Jean-Yves Reginster, Professor of Medicine, Protein Research Chair, Biochemistry Dept, College of Science, King Saud University, Riyadh, Kingdom of Saudi Arabia and Director WHO Collaborating Centre for Epidemiology of Musculoskeletal Health and Aging, Liège, Belgium. "Biosimilars have expanded into new therapeutic areas such as immunology, oncology and ophthalmology as they continue to offer significant cost-saving potential while expanding patient access. Having a denosumab product with a clinically proven track record in quality and safety is a valuable addition for my patients." In accordance with a settlement agreement with Amgen Inc., STOBOCLO and OSENVELT are expected to be available in the U.S. in June 2025. About STOBOCLO® (denosumab-bmwo) STOBOCLO® (denosumab-bmwo) is a receptor activator of NF-κb ligand (RANKL) inhibitor referencing PROLIA® (denosumab). STOBOCLO 60 mg/mL injection is approved by the FDA based on comprehensive data and clinical evidence confirming the therapeutic equivalence to PROLIA. In the U.S., STOBOCLO is approved to treat postmenopausal women with osteoporosis at high risk for fracture, to increase bone mass in men with osteoporosis at high risk for fracture, to treat glucocorticoid-induced osteoporosis in men and women at high risk for fracture, to increase bone mass in men at high risk for fracture receiving androgen deprivation therapy for nonmetastatic prostate cancer, and to increase bone mass in women at high risk for fracture receiving adjuvant aromatase inhibitor therapy for breast cancer. STOBOCLO was also approved by the European Medicines Agency (EMA) in February 2025. INDICATIONSSTOBOCLO® (denosumab-bmwo) is a RANK ligand (RANKL) inhibitor indicated for treatment:of postmenopausal women with osteoporosis at high risk for fractureto increase bone mass in men with osteoporosis at high risk for fracture or in men at high risk for fracture receiving androgen deprivation therapy for nonmetastatic prostate cancerof glucocorticoid-induced osteoporosis in men and women at high risk for fractureto increase bone mass in women at high risk for fracture receiving a adjuvant aromatase inhibitor therapy for breast cancer IMPORTANT SAFETY INFORMATION WARNING: SEVERE HYPOCALCEMIA IN PATIENTS WITH ADVANCED KIDNEY DISEASEPatients with advanced chronic kidney disease, including those on dialysis, face a higher risk of severe hypocalcemia after denosumab administration, with reported cases leading to hospitalization, life-threatening events, and fatalities.The presence of chronic kidney disease-mineral bone disorder (CKD-MBD) markedly increases the risk of hypocalcemia in these patientsBefore starting STOBOCLO® (denosumab-bmwo) in advanced chronic kidney disease patients, assess for CKD-MBD. Treatment should be supervised by a healthcare provider experienced in diagnosing and managing CKD-MBD. STOBOCLO is contraindicated in hypocalcemia, pregnant women, and in patients with known hypersensitivity to denosumab.Severe Hypocalcemia: Ensure adequate calcium and vitamin D; monitor for severe hypocalcemia.Drug Products with Same Active Ingredient: Do not use with other denosumab products.Hypersensitivity: If an anaphylactic or other clinically significant allergic reaction occurs, initiate appropriate therapy and discontinue further use of STOBOCLO.Osteonecrosis of the Jaw (ONJ): ONJ can occur in patients on STOBOCLO. Conduct oral exams before treatment; maintain oral hygiene; consider discontinuation of STOBOCLO if ONJ develops.Atypical Subtrochanteric and Diaphyseal Femoral Fractures: Monitor for thigh, hip, or groin pain; evaluate for fractures. Interruption of STOBOCLO therapy should be considered, pending a benefit-risk assessment, on an individual basis.Multiple Vertebral Fractures (MVF) Following Discontinuation of Treatment: Increased risk post-discontinuation of denosumab; transition to alternative therapy if discontinuing STOBOCLO.Serious Infections: Higher risk in denosumab users; assess benefit-risk profile, especially in immunocompromised patients. Assess the benefit-risk profile before starting STOBOCLO and reconsider its use if serious infections develop.Dermatologic Adverse Reactions: Consider discontinuing STOBOCLO if severe dermatitis, eczema, or rashes occur.Musculoskeletal Pain: Consider discontinuation of STOBOCLO if severe pain develops.Bone Turnover Suppression: In clinical trials in women with postmenopausal osteoporosis, denosumab significantly suppressed bone remodelling; patients should be monitored for these outcomes.Hypercalcemia in Pediatrics Patients with Osteogenesis Imperfecta: Not for pediatric use; hypercalcemia reported in patients osteogenesis imperfecta treated with denosumab products.Most common Adverse Reactions:In (>5%) of patients with: Postmenopausal osteoporosis were back pain, pain in extremity, hypercholesterolemia, musculoskeletal pain, and cystitis. Pancreatitis has been reported in clinical trials. Male osteoporosis were back pain, arthralgia, and nasopharyngitis.Glucocorticoid-induced osteoporosis (> 3%) were back pain, hypertension, bronchitis, and headache.Bone loss due to hormone ablation for cancer (≥ 10%) were arthralgia and back pain. Pain in extremity and musculoskeletal pain have also been reported in clinical trials. For more information, see Full Prescribing Information. About OSENVELT® (denosumab-bmwo) OSENVELT® (denosumab-bmwo) is a receptor activator of NF-κb ligand (RANKL) inhibitor referencing XGEVA® (denosumab). OSENVELT 120 mg/1.7 mL (70 mg/mL) injection is approved by the FDA based on a robust clinical trial and comprehensive data confirming the therapeutic equivalence to XGEVA. In the U.S., OSENVELT is indicated to prevent skeletal-related events in patients with multiple myeloma and in patients with bone metastases from solid tumors, to treat adults and skeletally mature adolescents with giant cell tumor of bone that is unresectable or where surgical resection is likely to result in severe morbidity, and to treat hypercalcemia of malignancy refractory to bisphosphonate therapy. OSENVELT was also approved by the European Medicines Agency (EMA) in February 2025. INDICATIONOSENVELT® (denosumab-bmwo) is indicated for:Prevention of skeletal-related events in patients with multiple myeloma and in patients with bone metastases from solid tumors.Treatment of adults and skeletally mature adolescents with giant cell tumor of bone that is unresectable or where surgical resection is likely to result in severe morbidity.Treatment of hypercalcemia of malignancy refractory to bisphosphonate therapy. IMPORTANT SAFETY INFORMATION Contraindications: Patients with hypocalcemia or with known clinically significant hypersensitivity to denosumab products.Drug Products with Same Active Ingredient. Patients receiving OSENVELT should not receive other denosumab products concomitantly.Hypersensitivity. If an anaphylactic or other clinically significant allergic reaction occurs, initiate appropriate therapy and discontinue further use of OSENVELT.Hypocalcemia. Severe hypocalcemia can occur, and fatal cases have been reported. Monitor calcium levels and calcium and vitamin D intake.Osteonecrosis of the Jaw (ONJ): ONJ can occur in patients on OSENVELT. Conduct oral exams and appropriate preventive dentistry before and during treatment; maintain oral hygiene and avoid invasive dental procedures; consider discontinuation of OSENVELT if ONJ develops.Atypical Subtrochanteric and Diaphyseal Femoral Fractures: Monitor for thigh, hip, or groin pain; evaluate for fractures. Interruption of OSENVELT therapy should be considered, pending a benefit-risk assessment, on an individual basis.Hypercalcemia Following Treatment Discontinuation in Patients with Giant Cell Tumor of Bone and in Patients with Growing Skeletons. Clinically significant hypercalcemia, potentially requiring hospitalization, can occur within a year after stopping denosumab in patients with giant cell tumor of bone or growing skeletons; monitor serum calcium and manage calcium and vitamin D needs post-discontinuation.Multiple Vertebral Fractures (MVF) Following Treatment Discontinuation. Increased risk post-discontinuation of denosumab; evaluate for risk for vertebral fractures after discontinuing OSENVELT.Embryo-Fetal Toxicity. Denosumab may cause fetal harm; verify pregnancy status before starting OSENVELT and advise effective contraception during treatment and for 5 months after the last dose.Most common Adverse Reactions:Bone Metastasis from Solid Tumors (≥ 25%) were fatigue/asthenia, hypophosphatemia, and nausea.In patients (≥ 10%) with: Multiple Myeloma were diarrhea, nausea, anemia, back pain, thrombocytopenia, peripheral edema, hypocalcemia, upper respiratory tract infection, rash, and headache; Giant Cell Tumor of Bone were arthralgia, headache, nausea, back pain, fatigue, and pain in extremity.Hypercalcemia of Malignancy (> 20%) were nausea, dyspnea, decreased appetite, headache, peripheral edema, vomiting, anemia, constipation, and diarrhea. For more information, see Full Prescribing Information. About CelltrionCelltrion is a leading biopharmaceutical company that specializes in researching, developing, manufacturing, marketing and sales of innovative therapeutics that improve people's lives worldwide. Celltrion is a pioneer in the biosimilar space, having launched the world's first monoclonal antibody biosimilar. Our global pharmaceutical portfolio addresses a range of therapeutic areas including immunology, oncology, hematology, ophthalmology and endocrinology. Beyond biosimilar products, we are committed to advancing our pipeline with novel drugs to push the boundaries of scientific innovation and deliver quality medicines. For more information, please visit our website www.celltrion.com/en-us. and stay updated with our latest news and events on our social media - LinkedIn, Instagram, X, and Facebook. About Celltrion USACelltrion USA is Celltrion's U.S. subsidiary established in 2018. Headquartered in New Jersey, Celltrion USA is committed to expanding access to innovative biologics to improve care for U.S. patients. Celltrion currently has seven biosimilars approved by the U.S. FDA: INFLECTRA® (infliximab-dyyb), TRUXIMA® (rituximab-abbs), HERZUMA® (trastuzumab-pkrb), VEGZELMA® (bevacizumab-adcd), YUFLYMA®(adalimumab-aaty), STEQEYMA® (Ustekinumab-stba), and AVTOZMA® (tocilizumab-anoh) as well as a novel biologic ZYMFENTRA® (infliximab-dyyb). Celltrion USA will continue to leverage Celltrion's unique heritage in biotechnology, supply chain excellence and best-in-class sales capabilities to improve access to high-quality biopharmaceuticals for U.S. patients. For more information, please visit www.celltrionusa.com, and stay updated with our latest news and events on our social media - LinkedIn FORWARD-LOOKING STATEMENTCertain information set forth in this press release contains statements related to our future business and financial performance and future events or developments involving Celltrion Inc. and its subsidiaries that may constitute forward-looking statements, under pertinent securities laws. These statements may be also identified by words such as "prepares", "hopes to", "upcoming", "plans to", "aims to", "to be launched", "is preparing", "once gained", "could", "with the aim of", "may", "once identified", "will", "working towards", "is due", "become available", "has potential to", the negative of these words or such other variations thereon or comparable terminology. In addition, our representatives may make oral forward-looking statements. Such statements are based on the current expectations and certain assumptions of Celltrion Inc. and its subsidiaries' management, of which many are beyond its control. Forward-looking statements are provided to allow potential investors the opportunity to understand management's beliefs and opinions in respect to the future so that they may use such beliefs and opinions as one factor in evaluating an investment. These statements are not guarantees of future performance and undue reliance should not be placed on them. Such forward-looking statements necessarily involve known and unknown risks and uncertainties associated with the company's business, including the risk factors disclosed in its Annual Report and/or Quarterly Reports, which may cause actual performance and financial results in future periods to differ materially from any projections of future performance or results expressed or implied by such statements. Celltrion Inc. and its subsidiaries undertake no obligation to update forward-looking statements if circumstances or management's estimates or opinions should change except as required by applicable securities laws. TrademarksSTOBOCLO® and OSENVELT® are registered trademarks of Celltrion Inc.PROLIA® and XGEVA® are registered trademarks of Amgen Inc. References[1] STOBOCLO U.S. prescribing information (2024)[2] OSENVELT U.S. prescribing information (2024)