Data from the QUASAR long-term extension study demonstrate more than 70% of patients were in clinical remission and more than 40% of patients were in endoscopic remission at Week 92
SAN DIEGO, CA (May 5, 2025) – Johnson & Johnson (NYSE: JNJ) today announced new data from the TREMFYA® (guselkumab) Phase 3 QUASAR long-term extension (LTE) study in adults with moderately-to-severely active ulcerative colitis (UC). These data are among 24 abstracts highlighting the Company’s research being presented at Digestive Disease Week (DDW) 2025.
Data from the QUASAR LTE study demonstrate patients treated with TREMFYA® sustained clinical and endoscopic efficacy at Week 92: a,1
- 72% of patients were in clinical remissionb with 99% of those patients remaining corticosteroid free for 8 or more weeks through Week 92.
- 43% of patients were in endoscopic remission.c
- Among patients achieving endoscopic improvementd at Week 44, 84% maintained endoscopic improvement through Week 92.
Patients treated with TREMFYA® sustained clinical and endoscopic remission regardless of prior biologic and/or JAK inhibitor treatment history.
“People living with ulcerative colitis seek treatments that both address the challenging symptoms of the disease and provide durable results,” said Gary R. Lichtenstein, Vice Chief, Division of Gastroenterology and Hepatology, Development and Philanthropy at the University of Pennsylvania.e “These new data show TREMFYA delivers long-term, sustained clinical and endoscopic remission, marking important progress in UC care.”
Safety data were consistent with the well-established safety profile of TREMFYA® in inflammatory bowel disease (IBD) with no new safety concerns identified.
“With these findings, TREMFYA shows the powerful impact it can have in achieving longer term remission in patients,” said Esi Lamousé-Smith, MD, PhD, Vice President, Gastroenterology Disease Area Lead, Immunology, Johnson & Johnson Innovative Medicine. “This is a significant step forward in our mission to reshape the standard of care in inflammatory bowel disease.”
TREMFYA® is the first and only approved, dual-acting monoclonal antibody that blocks IL-23 while also binding to CD64, a receptor on cells that produce IL-23. IL-23 is a cytokine secreted by activated monocyte/macrophages and dendritic cells that is known to be a driver of immune-mediated diseases including UC.2,3,4,5,6
TREMFYA® received FDA approval in September 2024 for the treatment of adult patients with moderately to severely active UC and is currently administered via an IV induction regimen, followed by a SC maintenance regimen. In November 2024, a supplemental Biologics License Application (sBLA) was submitted to the FDA seeking approval of a SC induction regimen of TREMFYA® for the treatment of adults with moderately to severely active UC. TREMFYA® was also approved by the FDA in March 2025 for SC and IV induction options for the treatment of adults with moderately to severely active Crohn’s disease (CD).
For a full list of all data being presented at DDW visit: https://innovativemedicine.jnj.com/our-innovation/focus-areas/immunology/gastroenterology/gastroenterology-newsroom
Editor’s Notes:
a. Nonresponder imputation results. Data were analyzed using 2 methods: ‘nonresponder imputation’ (NRI) accounting for patients with treatment failure or missing data, and ‘as observed’. NRI results were consistent with as observed.
b. Clinical remission was defined as a Mayo stool frequency subscore of 0 or 1 and not increased from induction baseline, a Mayo rectal bleeding subscore of 0, and a Mayo endoscopic subscore (MES) of 0 or 1.
c. Endoscopic remission (normalization) was defined as a MES of 0.
d. Endoscopic improvement was defined as a MES of 0 or 1
e. Dr. Lichtenstein has received honorarium for his role as a consultant to Johnson & Johnson. He has not been compensated for any media work.
ABOUT THE QUASAR PROGRAM (NCT04033445)
QUASAR is a randomized, double-blind, placebo-controlled, parallel group, multicenter, Phase 2b/3 program designed to evaluate the efficacy and safety of TREMFYA® in adults with moderately to severely active ulcerative colitis who had an inadequate response or intolerance to conventional therapy (e.g., thiopurines or corticosteroids), prior biologics (TNF antagonists or vedolizumab) and/or JAK inhibitors (tofacitinib). QUASAR included a Phase 2b dose-ranging induction study, a confirmatory Phase 3 induction study, and a Phase 3 randomized withdrawal maintenance study. In the Phase 3 induction study, patients received either TREMFYA® 200 mg or placebo by IV infusion at Weeks 0, 4, and 8. In the Phase 3 maintenance study, patients received a SC maintenance regimen of either TREMFYA® 200 mg q4w, TREMFYA® 100 mg q8w, or placebo.7 The ongoing long-term extension study provides an additional 4 years of treatment. Efficacy, safety, pharmacokinetics, immunogenicity, and biomarkers are assessed at specified time points.
ABOUT ULCERATIVE COLITIS
Ulcerative colitis (UC) is a chronic disease of the large intestine, also known as the colon, in which the lining of the colon becomes inflamed and develops tiny open sores, or ulcers, that produce pus and mucus. It is the result of the immune system’s overactive response. Symptoms vary but may typically include loose and more urgent bowel movements, rectal bleeding or bloody stool, persistent diarrhea, abdominal pain, loss of appetite, weight loss, and fatigue.8
ABOUT TREMFYA® (guselkumab)
Developed by Johnson & Johnson, TREMFYA® is the first approved fully-human, dual-acting monoclonal antibody designed to neutralize inflammation at the cellular source by blocking IL-23 and binding to CD64 (a receptor on cells that produce IL-23). Findings for dual-acting are limited to in vitro studies that demonstrate guselkumab binds to CD64, which is expressed on the surface of IL-23 producing cells in an inflammatory monocyte model. The clinical significance of this finding is not known.
TREMFYA® is a prescription medicine approved in the U.S. to treat:
- adults with moderate to severe plaque psoriasis who may benefit from taking injections or pills (systemic therapy) or phototherapy (treatment using ultraviolet or UV light).
- adults with active psoriatic arthritis.
- adults with moderately to severely active ulcerative colitis.
- adults with moderately to severely active Crohn’s disease.4
TREMFYA® is approved in Europe, Canada, Japan, and a number of other countries for the treatment of adults with moderate-to-severe plaque psoriasis and for the treatment of adults with active psoriatic arthritis. In addition, TREMFYA ® is approved in Europe, Japan and Brazil for the treatment of adult patients with moderately to severely active UC and in Brazil and China for the treatment of adults with moderately to severely active CD.
Johnson & Johnson maintains exclusive worldwide marketing rights to TREMFYA®. For more information, visit: www.tremfya.com.
IMPORTANT SAFETY INFORMATION
What is the most important information I should know about TREMFYA®?
TREMFYA® is a prescription medicine that may cause serious side effects, including:
- Serious Allergic Reactions. Stop using TREMFYA® and get emergency medical help right away if you develop any of the following symptoms of a serious allergic reaction:
- fainting, dizziness, feeling lightheaded (low blood pressure)
- swelling of your face, eyelids, lips, mouth, tongue or throat
- trouble breathing or throat tightness
- chest tightness
- skin rash, hives
- itching
Infections. TREMFYA® may lower the ability of your immune system to fight infections and may increase your risk of infections. Your healthcare provider should check you for infections and tuberculosis (TB) before starting treatment with TREMFYA® and may treat you for TB before you begin treatment with TREMFYA® if you have a history of TB or have active TB. Your healthcare provider should watch you closely for signs and symptoms of TB during and after treatment with TREMFYA®.
Tell your healthcare provider right away if you have an infection or have symptoms of an infection, including:
- fever, sweats, or chills
- muscle aches
- weight loss
- cough
- warm, red, or painful skin or sores on your body different from your psoriasis
- diarrhea or stomach pain
- shortness of breath
- blood in your phlegm (mucus)
- burning when you urinate or urinating more often than normal
- Liver problems. With the treatment of Crohn’s disease or ulcerative colitis, your healthcare provider will do blood tests to check your liver before and during treatment with TREMFYA®. Your healthcare provider may stop treatment with TREMFYA® if you develop liver problems. Tell your healthcare provider right away if you notice any of the following symptoms:
- unexplained rash
- vomiting
- tiredness (fatigue)
- yellowing of the skin or the whites of your eyes
- nausea
- stomach pain (abdominal)
- loss of appetite
- dark urine
Do not use TREMFYA® if you have had a serious allergic reaction to guselkumab or any of the ingredients in TREMFYA®.
Before using TREMFYA®, tell your healthcare provider about all of your medical conditions, including if you:
- have any of the conditions or symptoms listed in the section “What is the most important information I should know about TREMFYA®?”
- have an infection that does not go away or that keeps coming back.
- have TB or have been in close contact with someone with TB.
- have recently received or are scheduled to receive an immunization (vaccine). You should avoid receiving live vaccines during treatment with TREMFYA®.
- are pregnant or plan to become pregnant. It is not known if TREMFYA® can harm your unborn baby.
Pregnancy Registry: If you become pregnant during treatment with TREMFYA®, talk to your healthcare provider about registering in the pregnancy exposure registry for TREMFYA®. You can enroll by visiting www.mothertobaby.org/ongoing-study/tremfya-guselkumab, by calling 1-877-311-8972, or emailing [email protected]. The purpose of this registry is to collect information about the safety of TREMFYA® during pregnancy. - are breastfeeding or plan to breastfeed. It is not known if TREMFYA® passes into your breast milk.
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.
What are the possible side effects of TREMFYA®?
TREMFYA® may cause serious side effects. See “What is the most important information I should know about TREMFYA®?”
The most common side effects of TREMFYA® include: respiratory tract infections, headache, injection site reactions, joint pain (arthralgia), diarrhea, stomach flu (gastroenteritis), fungal skin infections, herpes simplex infections, stomach pain, and bronchitis.
These are not all the possible side effects of TREMFYA®. Call your doctor for medical advice about side effects.
Use TREMFYA® exactly as your healthcare provider tells you to use it.
Please read the full Prescribing Information, including Medication Guide, for TREMFYA® and discuss any questions that you have with your doctor.
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch, or call 1-800-FDA-1088.
Dosage Forms and Strengths: TREMFYA® is available as 100 mg/mL and 200 mg/2mL for subcutaneous injection and as a 200 mg/20 mL (10 mg/mL) single dose vial for intravenous infusion.
ABOUT JOHNSON & JOHNSON
At Johnson & Johnson, we believe health is everything. Our strength in healthcare innovation empowers us to build a world where complex diseases are prevented, treated, and cured, where treatments are smarter and less invasive, and solutions are personal. Through our expertise in Innovative Medicine and MedTech, we are uniquely positioned to innovate across the full spectrum of healthcare solutions today to deliver the breakthroughs of tomorrow, and profoundly impact health for humanity.
Learn more at https://www.jnj.com/ or at www.innovativemedicine.jnj.com
Follow us at @JNJInnovMed.
Janssen Research & Development, LLC and Janssen Biotech, Inc. are Johnson & Johnson companies.
Cautions Concerning Forward-Looking Statements
This press release contains “forward-looking statements” as defined in the Private Securities Litigation Reform Act of 1995 regarding TREMFYA®. The reader is cautioned not to rely on these forward-looking statements. These statements are based on current expectations of future events. If underlying assumptions prove inaccurate or known or unknown risks or uncertainties materialize, actual results could vary materially from the expectations and projections of Johnson & Johnson. Risks and uncertainties include, but are not limited to: challenges and uncertainties inherent in product research and development, including the uncertainty of clinical success and of obtaining regulatory approvals; uncertainty of commercial success; manufacturing difficulties and delays; competition, including technological advances, new products and patents attained by competitors; challenges to patents; product efficacy or safety concerns resulting in product recalls or regulatory action; changes in behavior and spending patterns of purchasers of health care products and services; changes to applicable laws and regulations, including global health care reforms; and trends toward health care cost containment. A further list and descriptions of these risks, uncertainties and other factors can be found in Johnson & Johnson’s most recent Annual Report on Form 10-K, including in the sections captioned “Cautionary Note Regarding Forward-Looking Statements” and “Item 1A. Risk Factors,” and in Johnson & Johnson’s subsequent Quarterly Reports on Form 10-Q and other filings with the Securities and Exchange Commission. Copies of these filings are available online at www.sec.gov, www.jnj.com or on request from Johnson & Johnson. Johnson & Johnson does not undertake to update any forward-looking statement as a result of new information or future events or developments.
Source: Johnson & Johnson
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