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MAX BioPharma is Pursuing Strategic Partnerships and Series A Financing LOS ANGELES, Oct. 24, 2024 /PRNewswire/ -- MAX BioPharma, Inc. ( ) recently published an article demonstrating the anti-atherosclerotic, anti-inflammatory, and cholesterol-lowering effects of its orally bioavailable oxysterol lead compound, Oxy210, in the peer-reviewed journal, Cells. Oxy210 is derived from the Company's Oxysterol Therapeutics® platform of proprietary small molecule oxysterols that has enabled discovery of diverse oxysterol-based drug candidates in different therapeutic areas, such as bone regeneration, viral and bacterial infection, cancer, pathologic fibrosis, and chronic inflammation. Oxy210 displays unique mechanisms of action that mediate its anti-inflammatory and anti-fibrotic effects based on multipronged targeting of not just one, but multiple cellular signaling pathways. When dysregulated, these vital signals are known to drive the progression of complex diseases such as metabolic dysfunction-associated steatohepatitis (MASH) and its comorbidity, atherosclerosis, which is the leading cause of death in people with MASH. Continue Reading During previous research conducted at the David Geffen School of Medicine at the University of California, Los Angeles and directed by Principal Investigator Dr. Jake Lusis, Professor of Medicine, and Dr. Simon Hui, Project Scientist, Oxy210 was found to significantly inhibit the development of fibrosis in a humanized mouse model of MASH that involves progressive inflammation, fat deposition, and fibrosis in the livers of these mice. The inhibition of fibrosis by Oxy210 was associated with reduced hepatic lipid deposition and the inhibited expression of pro-fibrotic and pro-inflammatory factors including transforming growth factor beta (TGF-β), NLRP3 inflammasome, interleukin-6 (IL-6), tumor necrosis alpha (TNF-α), interleukin-1 beta (IL-1β) and monocyte chemotactic protein 1 (MCP-1). Moreover, Oxy210 inhibited adipose tissue inflammation, suggesting its anti-inflammatory potential that reaches beyond the liver. In their recently published article, the investigators report on significant inhibition of atherosclerosis, a chronic inflammatory disease, in addition to parallel inhibition of MASH. Treatment with Oxy210 was associated with lowering circulating cholesterol levels and reducing macrophage proliferation and content in the artery wall. Together with the in vitro findings of the anti-inflammatory effects of Oxy210 in aortic endothelial cells and macrophages, it appears that Oxy210 could be a promising drug candidate for targeting MASH, atherosclerosis, and perhaps other chronic inflammatory diseases associated with metabolic dysfunction. An anti-inflammatory, anti-fibrotic, cholesterol-lowering oxysterol drug candidate targeting MASH and atherosclerosis Post this "There is an urgent need for therapies to treat fatty liver disease and its more advanced form, MASH, and I find the results of our studies with MAX BioPharma quite exciting" states Dr. Lusis. "Our humanized hyperlipidemic mouse model of MASH reflects the natural history of metabolic dysfunction-associated steatotic liver disease (MASLD) progression in humans and reproduces the salient features of human MASH. Attenuation of hepatic fibrosis and inflammation, as well as anti-atherosclerotic effects suggest that Oxy210 should be further explored as a therapeutic candidate for targeting both conditions " explains Dr. Hui." Dr. Frank Stappenbeck, Director of Chemistry at MAX BioPharma, comments: "Oxysterol-based molecules have been our treasure-trove, driving the Company's drug discovery efforts across several therapeutic indications", adding that "Surprisingly, Oxy210 acts a bit like a Swiss-army knife by combining anti-inflammatory, anti-fibrotic, and lipid-lowering effects, a rare combination of helpful properties". Additional pre-clinical studies required by the FDA for clinical development of Oxy210 are currently underway at MAX BioPharma and the Company is seeking strategic partnerships with biotechnology and pharmaceutical companies with the expertise and resources to further the development of oxysterol-based molecules towards FDA approval and commercialization. In addition, MAX BioPharma is in the process of raising a series A tranche financing round to support the advancement of its therapeutic development programs. "We are very excited and hopeful that our efforts will result in an effective and safe therapy for MASH, a condition with currently only one FDA-approved treatment, indicated for non-cirrhotic MASH and apparently effective in less than 30% of patients. Nevertheless, with dozens of failed clinical drug candidate in this field, this first ever FDA-approved drug reintroduced some degree of hope for people suffering with this condition, once considered untreatable" says Dr. Farhad Parhami, Founder, President and CEO of MAX BioPharma, adding "we hope to continue the advancement of MASH therapeutics with our novel drug candidate". About MAX BioPharma, Inc. MAX BioPharma is a privately held preclinical stage California-based biopharmaceutical company developing novel small molecule lipids as drug candidates for intervention in debilitating and fatal human diseases. The company will be a leader in a new field of Oxysterol Therapeutics® by leveraging a robust and growing intellectual property portfolio that will lead to treatments for numerous indications. MAX BioPharma's first success based on small molecule lipids has contributed to the discovery of novel osteogenic oxysterol compounds that target multipotent mesenchymal cells, including mesenchymal stem cells, to induce the formation of bone-forming osteoblasts and bone. The company is translating this technology into the next generation of therapeutic agents for stimulation of bone formation, locally and systemically, in indications such as spinal fusion, non-union fractures, and osteoporosis. MAX BioPharma is also pursuing the development of small molecule oxysterols that function as anti-tumorigenic Hedgehog and TGF-b pathway antagonists that will be more effective than currently known antagonists in treating a variety of cancers, including lung and pancreatic cancer, and hematologic malignancies, as well as fibrotic diseases of liver, lung, and kidney among others. For more information, please visit us at Media Contact: Farhad Parhami [email protected] SOURCE MAX BioPharma WANT YOUR COMPANY'S NEWS FEATURED ON PRNEWSWIRE.COM? 440k+ Newsrooms & Influencers 9k+ Digital Media Outlets 270k+ Journalists Opted In GET STARTED

Abivax Provides Update on Ulcerative Colitis (UC) Combination Therapy Program Strategy and Announces Early Preclinical Combination Data of Obefazimod and Etrasimod in Inflammatory Bowel Disease (IBD) Mouse Model Abivax is actively conducting preclinical studies with multiple oral and injectable therapies and will report additional data in Q4 2024.Pre-clinical evaluation of obefazimod combined with etrasimod improved body weight protection and Disease Activity Index with a synergistic and statistically significant reduction of several cytokines (TNF-alpha, IL-17, IL-6, IFN-gamma) in the blood compared to each treatment alone. PARIS, France, September 25, 2024, 10:00 p.m. CEST – Abivax SA (Euronext Paris & 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, announced today results of initial preclinical combination data of obefazimod combined with etrasimod in a mouse model of IBD. “Despite progress and development of multiple new advanced targeted therapies in IBD, efficacy rates appear to have reached a ceiling. Fewer than half of patients achieve clinical remission, and many of those lose response over time. It is imperative for our field to explore rational and scientifically driven combination therapies to break through the efficacy ceiling, which in turn will lead to improved long-term outcomes for patients,” said David Rubin, MD Professor of Medicine and Chief, Gastroenterology, Hepatology and Nutrition at The University of Chicago. “Our goal for this program is to develop a fixed-dose combination therapy for UC patients that delivers best-in-disease state induction and maintenance efficacy, a safety profile on par with obefazimod, and an IP runway into the late 2040’s”, said Marc de Garidel, CEO of Abivax. He went on to say, “We believe that obefazimod's emerging safety and efficacy profile, with potentially best-in-disease maintenance efficacy, could provide a meaningful benefit to patients when taken as a monotherapy. Additionally, since obefazimod is an oral therapy that has thus far demonstrated a favorable safety profile, it is an attractive candidate to be combined with other mechanisms of action to attempt to break through the efficacy ceiling observed with advanced therapies." Fabio Cataldi, MD Chief Medical Officer of Abivax provided key elements of the combination therapy program. “This program involves multiple stages. First, we will perform additional pre-clinical experiments evaluating the efficacy of obefazimod in combination with several other mechanisms of action. Based on our findings, we plan to select a candidate in 2025 and work towards developing a fixed dose combination to move into clinical development.” “We are setting a high bar for success and are excited about the promising data we are generating with this preclinical combination program,” Mr. de Garidel said. “We are planning to present this data at an upcoming scientific conference and are actively conducting additional combination studies that address various disease pathways. We look forward to providing an update on our progress by year end.” Pre-Clinical Program and Initial Findings Preclinical evaluation of obefazimod combined with etrasimod, was conducted in the T-cell adoptive transfer mouse model. In this study, CD4+CD45high or CD4+CD45low cells were intraperitoneally injected to 6-week-old male C57BL/6NRj-Rag2tm1Ciphe/Rj mice (10 mice per group). The mice were then orally treated for 55 days with obefazimod or etrasimod alone or with the combination of both compounds. The results showed that treatment with the combination improved the response on body weight protection and Disease Activity Index with a synergistic and statistically significant reduction of several cytokines (TNF-alpha, IL-17, IL-6, IFN-gamma) in the blood compared to each drug alone. About ObefazimodObefazimod, Abivax’s lead investigational drug candidate, is an orally administered small molecule that was demonstrated to potentially enhance the expression of a single microRNA, miR-124. Phase 2 clinical trials in patients with UC have generated positive data, resulting in the initiation of a pivotal global Phase 3 clinical trial program (ABTECT Program), with first patients enrolled in the United States in October 2022. Initiation of a Phase 2b clinical trial in Crohn’s disease is expected in Q3 2024, and exploration of potential combination therapy opportunities in UC is ongoing. About AbivaxAbivax 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. More information on the Company is available at www.abivax.com. Follow us on LinkedIn and on X, formerly Twitter, @Abivax. Contact: Patrick MalloySVP, Investor Relations, Abivax patrick.malloy@abivax.com +1 847 987 4878 FORWARD-LOOKING STATEMENTS This press release contains forward-looking statements, forecasts and estimates, including those relating to the Company’s business and financial objectives. Words such as “expect,” “plan,” “potential,” “will” and variations of such words and similar expressions are intended to identify forward-looking statements. These forward-looking statements include statements concerning or implying the therapeutic potential of Abivax's drug candidates, the availability and timing of preclinical data to support decision-making on therapy candidates for use in combination with obefazimod in UC, as well as the availability and timing of disclosure of preclinical data of any such combination therapy, the timing of initiation of clinical trials, obefazimod’s potential, as monotherapy or in combination with other therapies, to provide meaningful benefit to patients suffering from UC, Crohn’s disease, IBD or other indications, 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 our Annual Report on Form 20-F filed with the U.S. Securities and Exchange Commission on April 5, 2024 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 labelling and other matters that could affect the availability or commercial potential of such product candidates. Current results are not necessarily indicative of future results. 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 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 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.

Abivax is actively conducting preclinical studies with multiple oral and injectable therapies and will report additional data in Q4 2024. Pre-clinical evaluation of obefazimod combined with etrasimod improved body weight protection and Disease Activity Index with a synergistic and statistically significant reduction of several cytokines (TNFa, IL-17, IL-6, IFNg) in the blood compared to each treatment alone. PARIS, France, September 25, 2024, 10:00 p.m. CEST – Abivax SA (Euronext Paris & 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, announced today results of initial preclinical combination data of obefazimod combined with etrasimod in a mouse model of IBD. “Despite progress and development of multiple new advanced targeted therapies in IBD, efficacy rates appear to have reached a ceiling. Fewer than half of patients achieve clinical remission, and many of those lose response over time. It is imperative for our field to explore rational and scientifically driven combination therapies to break through the efficacy ceiling, which in turn will lead to improved long-term outcomes for patients,” said David Rubin, MD Professor of Medicine and Chief, Gastroenterology, Hepatology and Nutrition at The University of Chicago. “Our goal for this program is to develop a fixed-dose combination therapy for UC patients that delivers best-in-disease state induction and maintenance efficacy, a safety profile on par with obefazimod, and an IP runway into the late 2040’s”, said Marc de Garidel, CEO of Abivax. He went on to say, “We believe that obefazimod's emerging safety and efficacy profile, with potentially best-in-disease maintenance efficacy, could provide a meaningful benefit to patients when taken as a monotherapy. Additionally, since obefazimod is an oral therapy that has thus far demonstrated a favorable safety profile, it is an attractive candidate to be combined with other mechanisms of action to attempt to break through the efficacy ceiling observed with advanced therapies." Fabio Cataldi, MD Chief Medical Officer of Abivax provided key elements of the combination therapy program. “This program involves multiple stages. First, we will perform additional pre-clinical experiments evaluating the efficacy of obefazimod in combination with several other mechanisms of action. Based on our findings, we plan to select a candidate in 2025 and work towards developing a fixed dose combination to move into clinical development.” “We are setting a high bar for success and are excited about the promising data we are generating with this preclinical combination program,” Mr. de Garidel said. “We are planning to present this data at an upcoming scientific conference and are actively conducting additional combination studies that address various disease pathways. We look forward to providing an update on our progress by year end.” Pre-Clinical Program and Initial Findings Preclinical evaluation of obefazimod combined with etrasimod, was conducted in the T-cell adoptive transfer mouse model. In this study, CD4+CD45high or CD4+CD45low cells were intraperitoneally injected to 6-week-old male C57BL/6NRj-Rag2tm1Ciphe/Rj mice (10 mice per group). The mice were then orally treated for 55 days with obefazimod or etrasimod alone or with the combination of both compounds. The results showed that treatment with the combination improved the response on body weight protection and Disease Activity Index with a synergistic and statistically significant reduction of several cytokines (TNFa, IL-17, IL-6, IFNg) in the blood compared to each drug alone. Obefazimod, Abivax’s lead investigational drug candidate, is an orally administered small molecule that was demonstrated to potentially enhance the expression of a single microRNA, miR-124. Phase 2 clinical trials in patients with UC have generated positive data, resulting in the initiation of a pivotal global Phase 3 clinical trial program (ABTECT Program), with first patients enrolled in the United States in October 2022. Initiation of a Phase 2b clinical trial in Crohn’s disease is expected in Q3 2024, and exploration of potential combination therapy opportunities in UC is ongoing. 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. More information on the Company is available at www.abivax.com. Follow us on LinkedIn and on X, formerly Twitter, @Abivax. Contact: Patrick Malloy SVP, Investor Relations, Abivax patrick.malloy@abivax.com +1 847 987 4878 This press release contains forward-looking statements, forecasts and estimates, including those relating to the Company’s business and financial objectives. Words such as “expect,” “plan,” “potential,” “will” and variations of such words and similar expressions are intended to identify forward-looking statements. These forward-looking statements include statements concerning or implying the therapeutic potential of Abivax's drug candidates, the availability and timing of preclinical data to support decision-making on therapy candidates for use in combination with obefazimod in UC, as well as the availability and timing of disclosure of preclinical data of any such combination therapy, the timing of initiation of clinical trials, obefazimod’s potential, as monotherapy or in combination with other therapies, to provide meaningful benefit to patients suffering from UC, Crohn’s disease, IBD or other indications, 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 our Annual Report on Form 20-F filed with the U.S. Securities and Exchange Commission on April 5, 2024 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 labelling and other matters that could affect the availability or commercial potential of such product candidates. Current results are not necessarily indicative of future results. 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 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 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.