• YUFLYMA®(adalimumab-aaty) is a high-concentration (100mg/mL) and citrate-free formulation of Humira® (adalimumab) biosimilar[1]
• Celltrion previously received interchangeability (IC) designation for YUFLYMA ® (adalimumab-aaty) in prefilled syringes (20mg & 80mg); Expanded interchangeability (IC) designation applies to prefilled syringe (40mg) and autoinjectors (40mg and 80mg)

INCHEON, South Korea , May 21, 2025 /PRNewswire/ -- Celltrion, Inc. today announced that the U.S. Food and Drug Administration (FDA) has granted an expanded interchangeable designation for YUFLYMA ® (adalimumab-aaty), now including prefilled syringe (40mg) and autoinjectors (40mg and 80mg) presentations. With this approval, YUFLYMA is now fully interchangeable with the reference product, Humira ® (adalimumab), across all marketed dosage forms and strengths.

YUFLYMA is a high-concentration, citrate-free biosimilar to Humira, approved for multiple inflammatory indications including rheumatoid arthritis (RA), psoriatic arthritis (PsA), ankylosing spondylitis (AS), ulcerative colitis (UC), plaque psoriasis (Ps), hidradenitis suppurativa (HS), and uveitis (UV) in adult patients; Crohn's disease (CD) in adults and pediatric patients 6 years of age and older; and juvenile idiopathic arthritis (JIA) in patients 2 years of age and older. [1]

"This full interchangeability designation comes at a pivotal time as Celltrion continues to lead in the evolving biosimilar landscape," said Thomas Nusbickel , Chief Commercial Officer at Celltrion USA . "In alignment with recent federal initiatives aimed at lowering drug costs, we've taken timely action to enhance patient access and affordability. YUFLYMA – a high-concentration, citrate-free adalimumab biosimilar now fully interchangeable with Humira – reflects our long-standing commitment to delivering high-quality, accessible treatment options. Going forward, Celltrion will continue to put patients first by keeping drug costs affordable and remaining at the forefront of the U.S. biosimilar market, bringing competitive pricing and high-quality, accessible treatment options."

The interchangeable designation builds on the Phase III interchangeability study, which demonstrated similar outcomes in terms of pharmacokinetics, efficacy, safety and immunogenicity in patients with moderately to severely active plaque psoriasis who received reference adalimumab (ADA) continuously and those who alternated between reference ADA and YUFLYMA during the dosing interval of Weeks 25-27. The result of the interchangeability study was presented at the European Academy of Dermatology & Venereology (EADV), September 2024 , in theNetherlands . [2] 

The expanded interchangeability designation for YUFLYMA is complemented by a strategic price reduction that reflects Celltrion's ongoing commitment to improving patient access while aligning with federal efforts to lower drug prices. Effective immediately, the wholesale acquisition cost (WAC) list price of YUFLYMA has been reduced to $948 per syringe, and the updated pricing has been uploaded to the national pricing compendia.

YUFLYMA was first introduced in the U.S. market in July 2023 and is currently available as a 20mg, 40mg, and 80mg solution for injection in prefilled syringes and as 40mg and 80mg in autoinjectors. Celltrion offers adalimumab-aaty in both branded and unbranded versions, with two pricing options to meet different patient needs and improve patient affordability.

Notes to Editors:

About YUFLYMA ®  (CT-P17, biosimilar adalimumab-aaty) [1]

YUFLYMA is a high-concentration , low-volume and citrate-free adalimumab biosimilar to receive European Commission approval. 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, hidradenitis suppurativa and uveitis. YUFLYMA has been designated by the FDA as an interchangeable biosimilar in a prefilled syringe and autoinjector. YUFLYMA is a recombinant fully human anti–tumor necrosis factor α (anti-TNFα) monoclonal antibody. YUFLYMA is available in prefilled syringe as 20mg/0.2mL, 40mg/0.4mL and 80mg/0.8mL and autoinjector as 40mg/0.4mL and 80mg/0.8mL. Additionally, YUFLYMA features one of the longest shelf lives in its class, maintaining stability at room temperature (77 °F, 25 °C) for up to 31 days.

IMPORTANT SAFETY INFORMATION [1]
This important safety information also applies to YUFLYMA ® (adalimumab-aaty).

SERIOUS INFECTIONS

Patients 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 disease-modifying antirheumatic drugs (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.

MALIGNANCY

Lymphoma 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.
• 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, HS and UV, 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 psoralen + ultraviolet light A (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.

INDICATIONS

Adalimumab-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 adults Limitations 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
• Uveitis (UV): treatment of non-infectious intermediate, posterior, and panuveitis in adult patients

For Yuflyma (adalimumab-aaty): Please click for Full U.S. Prescribing Information.

For adalimumab-aaty:Please see Full U.S. Prescribing Information.

Globally, prescribing information varies; refer to the individual country product label for complete information.

About Celltrion, Inc.

Celltrion 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 USA

Celltrion 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's FDA-approved biosimilar products in immunology, oncology, hematology, and endocrinology include: INFLECTRA ®  (infliximab-dyyb), TRUXIMA ®  (rituximab-abbs), HERZUMA ®  (trastuzumab-pkrb), VEGZELMA ®  (bevacizumab-adcd), YUFLYMA ® (adalimumab-aaty), AVTOZMA ®  (tocilizumab-anho), STEQEYMA ®  (ustekinumab-stba), STOBOCLO ®  (denosumab-bmwo), OSENVELT ®  (denosumab-bmwo) and OMLYCLO ®  (omalizumab-igec), as well as the 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 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. 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", "anticipate" 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.

Trademarks

Humira is a registered trademark of AbbVie.

YUFLYMA ®  is a registered trademark of Celltrion, Inc., used under license.

References

For further information please contact: 
Andria Arena
aarena@jpa.com
+1 516-578-0057

SOURCE Celltrion