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Celltrion

European Commission approves Celltrion’s SteQeyma® (CT-P43), a biosimilar to Stelara® (ustekinumab), for the treatment of multiple chronic inflammatory diseases

2024.08.26

SteQeyma® (CT-P43) is approved as a biologic therapy in gastroenterology, dermatology and rheumatology indications1The European Commission (EC) approval is based on the totality of evidence including the results from a Phase III study in adults with moderate to severe plaque psoriasisCelltrion is committed to expanding their biosimilar portfolio and building expertise in immunology August 26, 2024 07:57 AM INCHEON, South Korea-Celltrion today announced that the European Commission (EC) has approved the use of SteQeyma® (CT-P43), an ustekinumab biosimilar referencing Stelara®, for the treatment of multiple chronic inflammatory diseases. SteQeyma is approved as a biologic therapy in gastroenterology, dermatology and rheumatology indications.1 Stelara was the first biologic therapy for Crohn’s disease to target interleukin (IL)-12 and IL-23 cytokines, known to play a key role in inflammatory and immune responses.2 The decision from the EC follows a positive opinion recommending SteQeyma from the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) in June 2024.3 The EC 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 is highly similar to its reference product, Stelara, and has no clinically meaningful differences in terms of efficacy and safety.4,5 “The EC approval of SteQeyma brings an important new therapeutic option to patients and we’re excited to launch this innovative therapy, with a proven track record in Crohn’s and other immune diseases,” said Taehun Ha, Senior Vice President and Head of Europe Division at Celltrion. “This approval, alongside those of Remsima SC and Yuflyma, marks a key milestone in our strategy to strengthen Celltrion’s immunology offering, and with the recent approval of Omlyclo in May, we are looking forward to expanding our portfolio into the dermatology sector. We believe the approval demonstrates our unwavering commitment to expanding patient access to affordable, high-quality biologic medicines.” SteQeyma is Celltrion’s seventh biosimilar approved for use in the European Union (EU). Alongside Remsima® SC, a subcutaneous formulation of infliximab approved in the EU, SteQeyma joins Celltrion’s distinguished portfolio that includes Remsima® (biosimilar infliximab), Truxima® (biosimilar rituximab), Herzuma® (biosimilar trastuzumab), Yuflyma® (biosimilar adalimumab), Vegzelma® (biosimilar bevacizumab) and Omlyclo® (biosimilar omalizumab). About SteQeyma® (CT-P43, biosimilar ustekinumab)1SteQeyma®, formerly known as CT-P43, is a human IL-12 and IL-23 antagonist indicated for multiple immune-mediated diseases. 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. About CelltrionCelltrion is a leading biopharmaceutical company based in Incheon, South Korea that specialises in researching, developing, manufacturing, marketing and sales of innovative therapeutics that improve people's lives worldwide. The company’s solutions include world-class monoclonal antibody biosimilars such as Remsima®, Truxima® and Herzuma®, providing broader patient access globally. Celltrion has also received U.S. FDA and EC approval for Vegzelma®, Yuflyma® and Omlyclo®, FDA approval for Zymfentra®, and EC approval for Remsima® SC. To learn more, please visit www.celltrion.com/en-us. 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 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, which may cause actual performance and financial results in future periods to differ materially from any projections of future performance or result expressed or implied by such forward-looking statements.Although forward-looking statements contained in this presentation are based upon what management of Celltrion Inc. and its subsidiaries believes are reasonable assumptions, there can be no assurance that forward-looking statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in 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. The reader is cautioned not to place undue reliance on forward-looking statements. TrademarkStelara® is a registered trademark of Johnson & Johnson.SteQeyma® is a registered trademark of Celltrion, Inc., used under license. References1 European Medicines Agency Summary of Product Characteristics (SmPC), SteQeyma.2 European Medicines Agency. Summary of Product Characteristics (SmPC), STELARA Available at: https://www.ema.europa.eu/en/documents/product-information/stelara-epar-product-information_en.pdf. [Last accessed August 2024].3 European Medicines Agency. Meeting highlights from the Committee for Medicinal Products for Human Use (CHMP) 24-27 June 2024. Available at: https://www.ema.europa.eu/en/news/meeting-highlights-committee-medicinal-products-human-use-chmp-24-27-june-2024. [Last accessed August 2024].4 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; Available at: https://link.springer.com/article/10.1007/s40259-023-00630-5. [Last accessed August 2024].5 Papp K et al., Efficacy and Safety after Switch from Reference Ustekinumab to Ustekinumab Biosimilar (CT-P43) in comparison with the Maintenance Group (CT-P43 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 August 2024].

Celltrion USA

Celltrion USA announces incorporation of adalimumab-aaty, a Humira® biosimilar, to the Costco Member Prescription Program

2024.08.13

 Adalimumab-aaty was first approved by the Food and Drug Administration on May 23, 2023 and became commercially available among key distributors across the U.S. on July 2, 2023 Adalimumab-aaty's inclusion creates greater accessibility to treatments for Americans with inflammatory conditions JERSEY CITY, N.J., Aug. 12, 2024 - Celltrion USA, Inc., (Celltrion USA) today announced its FDA-approved biosimilar adalimumab-aaty, has been added to the Costco member prescription program. Adalimumab-aaty is a high-concentration (100mg/mL) and citrate-free biosimilar to Humira® (adalimumab). Adalimumab-aaty is approved for the treatment of patients with rheumatoid arthritis, juvenile idiopathic arthritis, psoriatic arthritis, ankylosing spondylitis, Crohn's disease, ulcerative colitis, plaque psoriasis, and Hidradenitis Suppurativa.[1] The treatment has been available in the U.S. from Costco Specialty Pharmacy on October 1, 2023 for self-funded employer plans and will now be available for all Costco members through the Costco Member Prescription Program. "We are pleased to partner with Costco, the largest warehouse club and third-largest retailer in America," said Francine Galante, Vice President of Market Access at Celltrion USA. "We are committed to increasing patient choice through access to biosimilars. The inclusion of adalimumab-aaty to the Costco Member Prescription Program will expand patients' treatment options and help reduce healthcare costs." More than 80% of patients treated with Humira in the U.S. utilize a high-concentration and citrate-free formulation. Adalimumab-aaty provides additional benefits of administration via a latex-free device and a longer shelf life due to its ability to maintain a stability at 77°F for 31 days.  The Costco Member Prescription Program is a prescription drug discount card program that provides eligible Costco members and their eligible dependents the ability to obtain lower prices on adalimumab-aaty and other participating drugs at participating pharmacies. Costco members who are uninsured and want to pay cash for their adalimumab-aaty prescription, or who have been denied coverage by their insurer, may use this program to fill their adalimumab-aaty prescriptions at a substantial savings. The pricing available through the discount card applies at Costco Specialty Pharmacies.  "Celltrion is well positioned for continued growth in the U.S. market, which will increase competition and, ultimately, access to high-quality biosimilars and biologic products at a reduced cost," said Tom Nusbickel, Chief Commercial Officer at Celltrion USA. "To further enhance patient access, we are increasing our manufacturing capacity and strengthening our supply chain resilience to ensure delivery of patient treatment." IMPORTANT SAFETY INFORMATION[1]This important safety information also applies to YUFLYMA® (adalimumab-aaty) SERIOUS INFECTIONSPatients treated with adalimumab-aaty are at increased risk for developing serious infections that may lead to hospitalization or death. Most patients who developed these infections were taking concomitant immunosuppressants such as methotrexate or corticosteroids.Discontinue adalimumab-aaty if a patient develops a serious infection or sepsis. Reported infections include: Active tuberculosis (TB), including reactivation of latent TB. Patients with TB have frequently presented with disseminated or extrapulmonary disease. Test patients for latent TB before adalimumab-aaty use and during therapy. Initiate treatment for latent TB prior to adalimumab-aaty use. Invasive fungal infections, including histoplasmosis, coccidioidomycosis, candidiasis, aspergillosis, blastomycosis, and pneumocystosis. Patients with histoplasmosis or other invasive fungal infections may present with disseminated, rather than localized, disease. Antigen and antibody testing for histoplasmosis may be negative in some patients with active infection. Consider empiric antifungal therapy in patients at risk for invasive fungal infections who develop severe systemic illness. Bacterial, viral, and other infections due to opportunistic pathogens, including Legionella and Listeria. Carefully consider the risks and benefits of treatment with adalimumab-aaty prior to initiating therapy in patients with chronic or recurrent infection.Monitor patients closely for the development of signs and symptoms of infection during and after treatment with adalimumab-aaty, including the possible development of TB in patients who tested negative for latent TB infection prior to initiating therapy.  Treatment with adalimumab-aaty should not be initiated in patients with an active infection, including localized infections. Patients over 65 years of age, patients with co-morbid conditions and/or patients taking concomitant immunosuppressants (such as corticosteroids or methotrexate), may be at greater risk of infection. Discontinue adalimumab-aaty if a patient develops a serious infection or sepsis. For a patient who develops a new infection during treatment with adalimumab-aaty, closely monitor them, perform a prompt and complete diagnostic workup appropriate for an immunocompromised patient, and initiate appropriate antimicrobial therapy. Drug interactions with biologic products: In clinical studies in patients with RA, an increased risk of serious infections has been observed with the combination of TNF blockers with anakinra or abatacept, with no added benefit; therefore, use of adalimumab-aaty with abatacept or anakinra is not recommended in patients with RA. A higher rate of serious infections has also been observed in patients with RA treated with rituximab who received subsequent treatment with a TNF blocker. There is insufficient information regarding the concomitant use of adalimumab-aaty and other biologic products for the treatment of RA, PsA, AS, CD, UC, PS, and HS. Concomitant administration of adalimumab-aaty with other biologic DMARDs (e.g., anakinra and abatacept) or other TNF blockers is not recommended based upon the possible increased risk for infections and other potential pharmacological interactions. A higher rate of serious infections has been observed in RA patients treated with rituximab who received subsequent treatment with a TNF blocker. MALIGNANCYLymphoma and other malignancies, some fatal, have been reported in children and adolescent patients treated with TNF blockers, including adalimumab products. Postmarketing cases of hepatosplenic T-cell lymphoma (HSTCL), a rare type of T-cell lymphoma, have been reported in patients treated with TNF blockers, including adalimumab products. These cases have had a very aggressive disease course and have been fatal. The majority of reported TNF blocker cases have occurred in patients with Crohn's disease or ulcerative colitis and the majority were in adolescent and young adult males. Almost all of these patients had received treatment with azathioprine or 6-mercaptopurine concomitantly with a TNF blocker at or prior to diagnosis. It is uncertain whether the occurrence of HSTCL is related to the use of a TNF blocker or a TNF blocker in combination with these other immunosuppressants.  Consider the risks and benefits of TNF blocker treatment including adalimumab-aaty prior to initiating therapy in patients with a known malignancy other than a successfully treated non-melanoma skin cancer (NMSC), or when considering continuing a TNF blocker in patients who develop a malignancy. In controlled portions of clinical trials of some adalimumab products, more cases of malignancies have been observed compared to control-treated adult patients. Non-melanoma skin cancer (NMSC) was reported during clinical trials for patients treated with adalimumab products. During the controlled portions of 39 global adalimumab clinical trials in adult patients with RA, PsA, AS, CD, UC, PS and HS, the rate (95% confidence interval) of NMSC was 0.8 (0.52, 1.09) per 100 patient-years among adalimumab-treated patients and 0.2 (0.10, 0.59) per 100 patient-years among control-treated patients. Examine all patients, particularly those with a medical history of prior prolonged immunosuppressant therapy or psoriasis patients with a history of PUVA treatment, for the presence of NMSC prior to and during treatment with adalimumab-aaty. In clinical trials of some adalimumab products, there was an approximately threefold higher rate of lymphoma than expected in the general U.S. population. Patients with RA and other chronic inflammatory diseases, particularly those with highly active disease and/or chronic exposure to immunosuppressant therapies, may be at a higher risk (up to severalfold) than the general population for the development of lymphoma, even in the absence of TNF blockers. Postmarketing cases of acute and chronic leukemia were reported with the use of a TNF blocker in RA and other indications. Approximately half of the postmarketing cases of malignancies in children, adolescents, and young adults receiving adalimumab were lymphomas; other cases represented a variety of different malignancies and included rare malignancies usually associated with immunosuppression and malignancies that are not usually observed in children and adolescents. HYPERSENSITIVITY Anaphylaxis and angioneurotic edema have been reported following administration of adalimumab products. If an anaphylactic or other serious allergic reaction occurs, immediately discontinue administration of adalimumab-aaty and institute appropriate therapy. HEPATITIS B VIRUS REACTIVATION Use of TNF blockers, including adalimumab-aaty, may increase the risk of reactivation of hepatitis B virus (HBV) in patients who are chronic carriers. In some instances, HBV reactivation occurring in conjunction with TNF blocker therapy has been fatal. Evaluate patients at risk for HBV infection for prior evidence of HBV infection before initiating TNF blocker therapy. Exercise caution in prescribing TNF blockers for patients identified as carriers of HBV and closely monitor such patients for clinical and laboratory signs of active HBV infection throughout therapy and for several months following termination of therapy. In patients who develop HBV reactivation, stop adalimumab-aaty and initiate effective antiviral therapy with appropriate supportive treatment. The safety of resuming TNF blocker therapy after HBV reactivation is controlled is not known. Therefore, exercise caution when considering resumption of adalimumab-aaty therapy in this situation and monitor patients closely. NEUROLOGIC REACTIONS Use of TNF blocking agents, including adalimumab products, has been associated with rare cases of new onset or exacerbation of clinical symptoms and/or radiographic evidence of central nervous system demyelinating disease, including multiple sclerosis (MS) and optic neuritis, and peripheral demyelinating disease, including Guillain-Barré syndrome. Exercise caution in considering the use of adalimumab-aaty in patients with preexisting or recent-onset central or peripheral nervous system demyelinating disorders; discontinuation of adalimumab-aaty should be considered if any of these disorders develop. There is a known association between intermediate uveitis and central demyelinating disorders. HEMATOLOGIC REACTIONS Rare reports of pancytopenia including aplastic anemia have been reported with TNF blocking agents. Adverse reactions of the hematologic system, including medically significant cytopenia, have been infrequently reported with adalimumab products. Consider discontinuation of adalimumab-aaty therapy in patients with confirmed significant hematologic abnormalities. HEART FAILURE Cases of worsening congestive heart failure (CHF) and new-onset CHF have been reported with TNF blockers. Cases of worsening CHF have also been observed with adalimumab products. Exercise caution when using adalimumab-aaty in patients who have heart failure and monitor them carefully. AUTOIMMUNITY Treatment with adalimumab products may result in the formation of autoantibodies and, rarely, in the development of a lupus-like syndrome. If a patient develops symptoms suggestive of a lupus-like syndrome following treatment with adalimumab-aaty, discontinue treatment. IMMUNIZATIONS Patients on adalimumab-aaty may receive concurrent vaccinations, except for live vaccines. It is recommended that pediatric patients, if possible, be brought up to date with all immunizations in agreement with current immunization guidelines prior to initiating adalimumab-aaty therapy. No data are available on the secondary transmission of infection by live vaccines in patients receiving adalimumab products. The safety of administering live or live-attenuated vaccines in infants exposed to adalimumab in utero is unknown. Risks and benefits should be considered prior to vaccinating (live or live-attenuated) exposed infants. ADVERSE REACTIONS The most common adverse reactions in adalimumab clinical trials (>10%) were: infections (e.g., upper respiratory, sinusitis), injection site reactions, headache, and rash. INDICATIONSAdalimumab-aaty is a tumor necrosis factor (TNF) blocker indicated for: Rheumatoid Arthritis (RA): reducing signs and symptoms, inducing major clinical response, inhibiting the progression of structural damage, and improving physical function in adult patients with moderately to severely active RA Juvenile Idiopathic Arthritis (JIA): reducing signs and symptoms of moderately to severely active polyarticular JIA in patients 2 years of age and older Psoriatic Arthritis (PsA): reducing signs and symptoms, inhibiting the progression of structural damage, and improving physical function in adult patients with active PsA Ankylosing Spondylitis (AS): reducing signs and symptoms in adult patients with active AS Crohn's Disease (CD): treatment of moderately to severely active Crohn's disease in adults and pediatric patients 6 years of age and older Ulcerative Colitis (UC): treatment of moderately to severely active ulcerative colitis in adultsLimitations of Use: Effectiveness has not been established in patients who have lost response to or were intolerant to TNF blockers Plaque Psoriasis (Ps): treatment of adult patients with moderate to severe chronic plaque psoriasis who are candidates for systemic therapy or phototherapy, and when other systemic therapies are medically less appropriate Hidradenitis Suppurativa (HS): treatment of adult patients with moderate to severe hidradenitis suppurativa Please see full Prescribing Information including Boxed Warning for adalimumab-aaty Notes to Editors:About adalimumab-aaty[1]Adalimumab-aaty is an unbranded version of YUFLYMA® (CT-P17, biosimilar adalimumab).   YUFLYMA is a recombinant fully human anti–tumour necrosis factor α (anti-TNFα) monoclonal antibody. YUFLYMA is FDA-approved for the treatment of patients with rheumatoid arthritis, juvenile idiopathic arthritis, psoriatic arthritis, ankylosing spondylitis, Crohn's disease, ulcerative colitis, plaque psoriasis and Hidradenitis Suppurativa. Following the launch of 40mg/0.4mL in July 2023 and 80mg/0.8mL in December 2023, additional dosage form of 20mg/0.2mL was launched in the U.S. in March 2024. 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 five biosimilars approved by the U.S. FDA: INFLECTRA® (infliximab-dyyb), TRUXIMA® (rituximab-abbs), HERZUMA® (trastuzumab-pkrb), VEGZELMA® (bevacizumab-adcd) and YUFLYMA®(adalimumab-aaty) as well as a new biologic ZYMFENTRA™. 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/ 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/Celltrion Healthcare that may constitute forward-looking statements, under pertinent securities laws.These statements may be 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/Celltrion Healthcare's 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, which may cause actual performance and financial results in future periods to differ materially from any projections of future performance or result expressed or implied by such forward-looking statements. Such Risks and uncertainties may include, among other things, uncertainties regarding the launch timing and commercial success of Celltrion in the United States; the uncertainties inherent in supply chain, manufacturing, research and development, and the possibility of unfavorable new clinical data and further analyses of existing clinical data as it relates to Celltrion products; intellectual property and/or litigation/settlement implications; decisions by the FDA impacting labeling, manufacturing processes, safety, promotion, and/or other matters that could affect the availability or commercial potential of Celltrion products; and uncertainties regarding access challenges for our biosimilar products where our product may not receive appropriate formulary access or remains in a disadvantaged position relative to competitive products; and competitive developments. A further description of risks and uncertainties can be found in Celltrion's Annual Report. Although forward-looking statements contained in this presentation are based upon what management of Celltrion/Celltrion Healthcare believes are reasonable assumptions, there can be no assurance that forward-looking statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Celltrion/Celltrion Healthcare undertakes no obligation to update forward-looking statements if circumstances or management's estimates or opinions should change except as required by applicable securities laws. The reader is cautioned not to place undue reliance on forward-looking statements. TrademarksHumira is a registered trademark of AbbVie.YUFLYMA® is a registered trademark of Celltrion, Inc., used under license. References[1]  Adalimumab-aaty U.S. prescribing information

Celltrion

Celltrion showcases promising results in phase III study for CT-P47, a biosimilar candidate of RoActemra® (tocilizumab) in patients with rheumatoid arthritis (RA) at EULAR 2024

2024.06.14

CT-P47 was highly similar in terms of efficacy and safety to the reference product RoActemra® (tocilizumab) for the treatment of rheumatoid arthritis (RA) up to week 321High usability of the CT-P47 autoinjector (AI) was observed in RA patients, offering greater flexibility and an alternative treatment option June 13, 2024 06:01 PM Eastern Daylight TimeINCHEON, South Korea--(BUSINESS WIRE)--Celltrion today presented positive Phase III data for CT-P47, a biosimilar candidate referencing RoActemra® in patients with moderate-to-severe rheumatoid arthritis (RA), at the Annual European Congress of Rheumatology (EULAR) 2024. Data from the Phase III comparative clinical trial demonstrated that the investigational biosimilar candidate, CT-P47, has an equivalent efficacy, and comparable safety and immunogenicity profile to the reference tocilizumab product.The Phase III study randomised 471 patients with moderate to severe RA to receive either CT-P47 or reference tocilizumab every 4 weeks at a dose of 8 mg/kg for the first 20 weeks. Prior to dosing at week 24, patients receiving tocilizumab were re-randomised either to continue with reference tocilizumab or undergo transition to CT-P47 up to week 48. The primary endpoint was disease activity score 28 (DAS28) erythrocyte segmentation rate (ESR), improvement at weeks 12 and 24. The estimated differences between the two groups were -0.01 at week 12 and -0.1 at week 24, and the confidence intervals of the difference were entirely within the pre-defined equivalence margins at both timepoints (95% CI: -0.26 to 0.24 at week 12 and 90% CI: -0.30 to 0.10 at week 24). The treatment groups were highly similar in terms of mean serum concentration up to week 32, incidence of treatment emergent adverse events and anti-drug antibody positivity, demonstrating comparable pharmacokinetics, safety and immunogenicity. “Biosimilars provide an opportunity to address unmet medical needs by expanding access to high-quality biologic medicines. The positive top-line results from the Phase III study supports the biosimilarity of CT-P47 to reference tocilizumab, and also provide clinical evidence for the possibility of switching from reference tocilizumab to CT-P47,” said Dr. Josef S. Smolen, Emeritus Professor of Medicine at the Medical University of Vienna, Austria. In addition, a Phase I/III study compared pharmacokinetic (PK) similarity between the CT-P47 autoinjector (AI) and the pre-filled syringe (PFS) and evaluated the usability of the CT-P47 AI.2 The study showed PK similarity of the CT-P47 AI and the PFS in healthy subjects. In addition, higher usability of the CT-P47 AI was observed compared to the PFS in RA patients. The CT-P47 AI was well tolerated, and no new safety signals were found in the study. “We believe that administration of CT-P47 via an autoinjector presents an alternative delivery option to a pre-filled syringe in clinical practice and aims to improve treatment compliance,” said Taehun Ha, Vice President and Head of Europe Division at Celltrion. “The availability of tocilizumab biosimilars such as CT-P47 represents a great opportunity to reduce treatment costs, contributing to health-care budget sustainability, improved patient access, and lower disease burden. At Celltrion, we are always expanding our biosimilars portfolio for immunology, and we remain committed to improving the quality of patients’ lives and the sustainability of healthcare systems whilst increasing physician choice and patient access to biologics.” About rheumatoid arthritisRheumatoid arthritis (RA) is a chronic inflammatory disease that causes pain, swelling and stiffness in joints.3 Approximately 1% of the population worldwide suffer from RA4, however, the cause remains unknown. Symptoms of RA develop due to immune system dysfunction, causing immune cells to attack healthy cells, but it is currently unknown why the immune system behaves in this way. Although there's no cure for RA, early treatment such as disease-modifying anti-rheumatic drugs (DMARDs) and biological treatments can reduce the risk of joint damage and limit the impact of the condition.5 About CT-P47 (biosimilar tocilizumab)CT-P47, containing the active ingredient tocilizumab, is a recombinant humanised monoclonal antibody that acts as an interleukin 6 (IL-6) receptor antagonist. Based on data from the global Phase III clinical trial, designed to evaluate the efficacy, pharmacokinetics (PK), safety, and immunogenicity of CT-P47 compared to the reference product RoActemra®, CT-P47 was filed for regulatory approval with the U.S. Food and Drug Administration (FDA) and European Medicines Agency (EMA) in January and February 2024 respectively. About CelltrionCelltrion is a leading biopharmaceutical company based in Incheon, South Korea that specialises in researching, developing, manufacturing, marketing and sales of innovative therapeutics that improve people's lives worldwide. The company’s solutions include world-class monoclonal antibody biosimilars such as Remsima®, Truxima®, Herzuma®, Yuflyma®, and Vegzelma®, and novel therapeutics such as Remsima® SC (US brand name Zymfentra®) providing broader patient access globally. To learn more, please visit www.celltrion.com/en-us. 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 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, which may cause actual performance and financial results in future periods to differ materially from any projections of future performance or result expressed or implied by such forward-looking statements.Although forward-looking statements contained in this presentation are based upon what management of Celltrion Inc. and its subsidiaries believes are reasonable assumptions, there can be no assurance that forward-looking statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in 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. The reader is cautioned not to place undue reliance on forward-looking statements. TrademarkRoActemra® is a registered trademark of Chugai Pharmaceutical Co., Ltd., a member of the Roche Group. References1 Josef S. Smolen et al., Similar Efficacy, Safety, and Immunogenicity of Tocilizumab Biosimilar (CT-P47) and Reference Tocilizumab in Patients with Moderate–to Severe Active Rheumatoid Arthritis: Week 32 Results from the Phase 3 Single Transition Study. Poster (POS0610). Presented at EULAR 2024.2 Edward Keystone et al., Pharmacokinetics, Usability and safety of Tocilizumab Biosimilar (CT-P47) administered subcutaneously by auto-injector or pre-filled syringe. Poster (POS0634). Presented at EULAR 2024.3 Arthritis Research UK. Rheumatoid arthritis. Available at https://www.versusarthritis.org/about-arthritis/conditions/rheumatoid-arthritis.4 Allan Gibofsky. Overview of Epidemiology, Pathophysiology, and Diagnosis of Rheumatoid Arthritis. American Journal of Managed Care. 2012;18:S295-302.5 Arthritis Foundation. Rheumatoid Arthritis. Available at https://www.arthritis.org/about-arthritis/types/rheumatoid-arthritis/ [Last accessed June 2024]. NHS UK. Treatment Available at https://www.nhs.uk/conditions/rheumatoid-arthritis/treatment/.

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