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MaaT Pharma Provides a Business Update and Highlights Key Milestones Expected in 2025

Regulatory News:

MaaT Pharma (EURONEXT: MAAT – the “Company”), a clinical-stage biotechnology company and a leader in the development of Microbiome Ecosystem Therapies^TM (MET) dedicated to enhancing survival for patients with cancer through immune modulation, today provides a business update and highlights its key milestones expected for the second half of 2025.

“Following the submission of the Marketing Authorization Application to the EMA for our lead asset, Xervyteg, earlier this month, we are excited to advance Xervyteg toward commercialization — a potential world first for a microbiota therapeutic in oncology — and are now fully focused on progressing registration activities across Europe”, said Hervé Affagard, CEO and co-founder of MaaT Pharma. “This marks a major step in confirming our commitment to address high unmet medical needs and, importantly, it serves as a stepping stone toward international expansion, as we aim to bring our therapies to patients worldwide"

Pipeline highlights

In Hemato-Oncology

Acute Graft-versus-Host Disease (aGvHD) – Xervyteg (MaaT013)

In January 2025, the Company announced positive topline results from the pivotal Phase 3 ARES Study evaluating Xervyteg (MaaT013) in aGvHD. The study met its primary endpoint with a significant gastrointestinal overall response rate at Day 28 of 62% and demonstrates the unprecedented efficacy of Xervyteg as third-line treatment of aGvHD with gastrointestinal involvement (GI-aGvHD) consistent with communicated Early Access Program results.
On June 02, 2025, the Company announced the submission of a Marketing Authorization Application (MAA) to the European Medicines Agency (EMA) for its lead drug candidate MaaT013, under the registered brand name of Xervyteg. If approved, the Marketing Authorization would establish Xervyteg as the first microbiota therapeutic approved by the EMA, the first one in hemato-oncology worldwide and the first approved therapy in third-line GI-aGvHD.
On June 13, 2025, the Company presented positive updated data in Early Access Program for 173 patients at the 2025 annual EHA Congress supporting the high efficacy and good safety profile of Xervyteg. This dataset confirms the breakthrough potential of Xervyteg for aGvHD patients with limited treatment options.
Final results from the pivotal ARES study, including 12-month overall survival data, are expected before the end of 2025 and will be incorporated into the filing dossier.
The potential marketing authorization could be delivered around mid-2026, enabling the start of the commercialization of Xervyteg in Europe.
MaaT Pharma is advancing discussions with potential partners to accelerate the commercialization plan across Europe.
MaaT Pharma primarily focuses on the commercialization of its most advanced asset with the completion of regulatory steps in Europe, and dedicated preparation activities for the European launch of Xervyteg.
In parallel, the Company continues discussions with the FDA to optimize a dedicated pivotal study in the U.S., with the objective of enabling the earliest possible access to Xervyteg for U.S. patients. Such a study could be initiated in 2026 (instead of Q4 2025), subject to regulatory confirmation as MaaT Pharma continues watching the evolving regulatory policies and process in the United States.
The Company continues the ongoing Early Access Program in the United States, initiated in December 2024.