Abivax to Present Data on Obefazimod at United European Gastroenterology (UEG) Week 2026

Abivax to Present Data on Obefazimod at United European Gastroenterology (UEG) Week 2026

Four oral presentations and three posters build upon Phase 3 ABTECT Maintenance and Induction programs in ulcerative colitis, long-term Phase 2 findings, and preclinical anti-fibrotic research

PARIS, France – September 30, 2026 – 10:05 PM CEST – Abivax SA (Euronext Paris: FR0012333284 – ABVX / Nasdaq: ABVX) (“Abivax” or the “Company”), a clinical-stage biotechnology company focused on developing therapeutics that harness the body’s natural regulatory mechanisms to stabilize the immune response in patients with chronic inflammatory diseases, today announced that seven scientific abstracts on obefazimod, its lead drug candidate for the treatment of moderately to severely active ulcerative colitis (UC), will be presented at the United European Gastroenterology (UEG) Week 2026 meeting, taking place October 17–20, 2026, in Barcelona, Spain. These presentations will highlight data from the Phase 3 ABTECT Maintenance and Induction trials in UC, long-term follow-up from the Phase 2 program in UC, and preclinical research on obefazimod's anti-fibrotic and anti-tumor activity.

"The data being presented at UEG Week add to the growing understanding of obefazimod and its potential in inflammatory bowel disease,” said Marc de Garidel, MBA, Chief Executive Officer of Abivax. “These findings reinforce our confidence in obefazimod’s potential to address significant unmet needs for patients living with inflammatory bowel disease."

Chris Rabbat, PhD, Chief Medical Officer of Abivax, added, "The seven accepted abstracts reflect the breadth and maturity of the obefazimod program, spanning Phase 3 maintenance results, long-term Phase 2 efficacy and safety data, and preclinical findings on inflammation and fibrosis. We look forward to sharing these findings with the global gastroenterology community and highlighting the growing clinical and scientific evidence supporting obefazimod.”

Visit the publications page of Abivax’s website to view the presentations after the conclusion of the meeting.

Data to be Presented:

 About Abivax

Abivax is a clinical-stage biotechnology company focused on developing therapeutics that harness the body’s natural regulatory mechanisms to stabilize the immune response in patients with chronic inflammatory diseases. Based in France and the United States, Abivax’s lead drug candidate, obefazimod (ABX464), is in Phase 3 clinical trials for the treatment of moderately to severely active ulcerative colitis. 

Contact:

Patrick Malloy
SVP, Investor Relations
Abivax SA
patrick.malloy@abivax.com
+1 847 987 4878 

Media Contact:

LifeSci Communications
Karissa Baltz, PhD
Associate Director
LSC_ABIVAX@lifescicomms.com
 

FORWARD-LOOKING STATEMENTS

This press release contains forward-looking statements, forecasts and estimates, including those relating to the Company’s business. Words such as “anticipate,” “expect,” “on track,” “potential,” “will” and variations of such words and similar expressions are intended to identify forward-looking statements. These forward-looking statements include statements concerning the potential therapeutic benefit of obefazimod and obefazimod’s potential to address significant unmet needs for patients living with inflammatory bowel disease, and other statements that are not historical fact. Although Abivax’s management believes that the expectations reflected in such forward-looking statements are reasonable, investors are cautioned that forward-looking information and statements are subject to various risks, contingencies and uncertainties, many of which are difficult to predict and generally beyond the control of Abivax, that could cause actual results and developments to differ materially from those expressed in, or implied or projected by, the forward-looking information and statements. A description of these risks, contingencies and uncertainties can be found in the documents filed by the Company with the French Autorité des Marchés Financiers pursuant to its legal obligations including its universal registration document (Document d’Enregistrement Universel) and in its Annual Report on Form 20-F for the fiscal year ended December 31, 2025 filed with the U.S. Securities and Exchange Commission on March 23, 2026, under the caption “Risk Factors.” These risks, contingencies and uncertainties include, among other things, the uncertainties inherent in research and development, future clinical data and analysis, decisions by regulatory authorities, such as the FDA or the EMA, regarding whether and when to approve any drug candidate, as well as their decisions regarding labeling and other matters that could affect the availability or commercial potential of such product candidates, and the availability of funding sufficient for the Company’s foreseeable and unforeseeable operating expenses and capital expenditure requirements. Special consideration should be given to the potential hurdles of clinical and pharmaceutical development, including further assessment by the Company and regulatory agencies and IRBs/ethics committees following the assessment of preclinical, pharmacokinetic, carcinogenicity, toxicity, CMC and clinical data. Furthermore, these forward-looking statements, forecasts and estimates are made only as of the date of this press release. Readers are cautioned not to place undue reliance on these forward-looking statements. Abivax disclaims any obligation to update these forward-looking statements, forecasts or estimates to reflect any subsequent changes that the Company becomes aware of, except as required by law. Information about pharmaceutical products (including products currently in development) that is included in this press release is not intended to constitute an advertisement. This press release is for information purposes only, and the information contained herein does not constitute either an offer to sell or the solicitation of an offer to purchase or subscribe for securities of the Company in any jurisdiction. Similarly, it does not give and should not be treated as giving investment advice. It has no connection with the investment objectives, financial situation or specific needs of any recipient. It should not be regarded by recipients as a substitute for exercise of their own judgment. All opinions expressed herein are subject to change without notice. The distribution of this document may be restricted by law in certain jurisdictions. Persons into whose possession this document comes are required to inform themselves about and to observe any such restrictions.