May 14, 2025: MaaT Pharma To Present Updated Data for MaaT013 in Early Access Program at the European Hematology Association (EHA) Annual Congress

Date : May 14, 2025

MaaT Pharma To Present Updated Data for MaaT013 in Early Access Program at the European Hematology Association (EHA) Annual Congress

  • Oral presentation will highlight updated data in Early Access Program (EAP) for 173 patients with acute Graft-vs-Host Disease (aGvHD) treated with MaaT013.
  • Poster presentation selected for ongoing Phase 2b trial of MaaT033 in patients receiving allogeneic hematopoietic stem cell transplantation (allo-HSCT)

Lyon, France, May 14, 2025 – 6:00pm CET – MaaT Pharma (EURONEXT: MAAT – the “Company”), a clinical-stage biotechnology company and a leader in the development of Microbiome Ecosystem TherapiesTM (MET) dedicated to enhancing survival for patients with cancer through immune modulation, today announced that updated data from its Early Access Program for 173 patients with aGvHD treated with MaaT013 have been selected for oral presentation at the European Hematology Association (EHA) Annual congress, taking place in Milan from June 12–15, 2025. The oral presentation of MaaT013 data at EHA—Europe’s leading hematology conference—underlines the growing recognition of the drug’s clinical potential and the Company’s leadership in hemato-oncology using microbiome-based approach.

These updated EAP results for 173 patients, to be presented at EHA Congress, are consistent with the positive topline results of the Phase 3 trial announced in January 2025 and further confirm MaaT013’s high efficacy and favorable safety profile in treating patients with gastrointestinal aGvHD. There are currently no approved options for patients with GI-aGvHD who are refractory to steroids and either refractory or intolerant to ruxolitinib, despite the poor prognosis with one-year survival rates of 15% (Abedin et al., 2021).

MaaT Pharma has observed a 75% increase in physician demand with MaaT013 under the ongoing EAP in 2024 compared to 2023, across Europe and, more recently, in the United States. This steady demand for access to MaaT013 reflects its growing adoption by the medical community as a treatment option for patients with GI-aGvHD. To date, the Company has safely treated more than 300 patients with aGvHD across clinical trials and the Company’s EAP ongoing in both Europe and the U.S.

With upcoming regulatory milestones in Europe including a Marketing Authorization submission expected in June 2025, growing global physician interest, and continued clinical validation, MaaT013 has the potential to become the first approved third-line treatment for GI-aGvHD, significantly improving survival outcomes for approximately 3,000 third-line patients annually across the U.S., Canada, and Europe.

Details of the Oral Presentation:

  • Title: Pooled Fecal Allogeneic Microbiotherapy for Refractory Gastrointestinal Acute Graft-Versus-Host Disease: Results from the Early Access Program in Europe
  • Abstract number: S260
  • Presenting Author: Mohamad Mohty, Professor of Hematology and Head of the Hematology and Cellular Therapy Department at Saint-Antoine Hospital and Sorbonne University
  • Session title: s424 Stem cell transplantation – Session 2
  • Date & Time: 13/06/2025 (17:00 – 18:15 CEST) – Brown Hall 3

MaaT Pharma will also present its ongoing Phase 2b trial (PHOEBUS) design for MaaT033 developed as an adjunctive therapy to enhance overall survival in allo-HSCT. This international, multi-center trial (NCT05762211) is the largest randomized controlled study to date of a microbiome-based therapy in oncology, enrolling up to 387 patients across 60 sites. To date, the independent Data Safety Monitoring Board (DSMB) has conducted two safety reviews and one unblinded interim analysis, all of which concluded positively with the recommendation that the PHOEBUS trial proceed as planned.

About MaaT Pharma

MaaT Pharma is a leading, late-stage clinical company focused on developing innovative gut microbiome-driven therapies to modulate the immune system and enhance cancer patient survival. Supported by a talented team committed to making a difference for patients worldwide, the Company was founded in 2014 and is based in Lyon, France.

As a pioneer, MaaT Pharma is leading the way in bringing the first microbiome-driven immunomodulator in oncology. Using its proprietary pooling and co-cultivation technologies, MaaT Pharma develops high diversity, standardized drug candidates, aiming at extending life of cancer patients. MaaT Pharma has been listed on Euronext Paris (ticker: MAAT) since 2021.

Forward-Looking statements

All statements other than statements of historical fact included in this press release about future events are subject to (i) change without notice and (ii) factors beyond the Company’s control. These statements may include, without limitation, any statements preceded by, followed by, or including words such as “target,” “believe,” “expect,” “aim”, “intend,” “may,” “anticipate,” “estimate,” “plan,” “project,” “will,” “can have,” “likely,” “should,” “would,” “could” and other words and terms of similar meaning or the negative thereof. Forward-looking statements are subject to inherent risks and uncertainties beyond the Company’s control that could cause the Company’s actual results or performance to be materially different from the expected results or performance expressed or implied by such forward-looking statements

 

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Acting Chief Scientific Officer

Sheri Simmons

Sheri Simmons, Ph.D., is Acting Chief Scientific Officer at MaaT Pharma. Sheri brings extensive experience in biotechnology, particularly in the microbiome field, having held scientific leadership positions at Seres Therapeutics, Johnson & Johnson’s Microbiome Solutions team, and most recently at Seed Health, a leading probiotics company. In her role, she strengthens the Company’s scientific leadership, overseeing preclinical research, AI/data initiatives, and supporting efforts toward the Marketing Authorization Application of Xervyteg® in aGvHD.

Sheri holds a PhD in Biological Oceanography from the Massachusetts Institute of Technology (MIT) and completed an A.B. in Ecology & Evolutionary Biology at Princeton University, graduating summa cum laude and as a Phi Beta Kappa member, receiving one of six awards for the best senior thesis in the sciences. Sheri holds a PhD in Biological Oceanography from the Massachusetts Institute of Technology (MIT) and completed an A.B. in Ecology & Evolutionary Biology at Princeton University, graduating summa cum laude and as a Phi Beta Kappa member, receiving one of six awards for the best senior thesis in the sciences.

CEO and co-founder

Hervé Affagard

Hervé Affagard is the CEO and co-founder of MaaT Pharma. For the past 15 years, Hervé has been an intra/entrepreneur in the healthcare industry, after starting his career in IT in the steel industry. In late 2014, Hervé co-founded the company alongside Dr. Joël Doré, author of nearly 500 publications, and
one of the world’s most cited authors in the microbiome sphere today, after a professional career that spanned multiple industries. Hervé has led MaaT Pharma’s development from its early concept in 2013 and has been at the forefront of the development of the microbiome healthcare ecosystem in France and Europe. In January 2022, Hervé has been elected President of Allliance Promotion Microbiote, an organization founded in 2021 to support the microbiome sector development in France.

Engineer, MBA