Durvalumab

In Australia and Europe MADRID, SPAIN and CAMBRIDGE, MA, UNITED STATES, September 16th, 2025 - Oryzon Genomics, S.A. (ISIN Code: ES0167733015, ORY), a clinical-stage biopharmaceutical company and a European leader in epigenetics, today announced that it continues to expand its patent portfolio for iadademstat and vafidemstat, Oryzon’s clinical-stage LSD1 inhibitors for oncology and central nervous system (CNS) disorders, following new Decisions to Grant from the Australian and European patent offices. The Australian Patent Office has issued a Decision to Grant for Oryzon’s patent application AU2020249493, titled “Combinations of iadademstat for cancer therapy”. The allowed claims cover combinations of iadademstat with PD1 or PD-L1 inhibitors for the treatment of cancer, including small cell lung cancer (SCLC). A Decision to Grant is an official communication from a national patent office indicating that a patent application has met all requirements for issuance as a patent. Once formally granted, this Australian patent will remain in force until at least 2040, not including any potential patent term extensions. A corresponding patent has also been granted in Russia, and applications are pending in Europe, the United States, Japan, China, and other countries. Iadademstat is currently being evaluated in combination with PD-L1 inhibitors (atezolizumab or durvalumab) in first line SCLC patients with extensive disease in a Phase I/II trial conducted and sponsored by the U.S. National Cancer Institute (NCI) under a Cooperative Research and Development Agreement (CRADA) with Oryzon. More than 30 sites accross the U.S. participate in the trial, including leading institutions such as Memorial Sloan Kettering Cancer Center, Johns Hopkins, City of Hope, Yale University and the University of Chicago, among others. Oryzon has also received a Decision to Grant from the European Patent Office for its patent application EP24205125.8, titled “Vafidemstat for treating behavior alterations”. The allowed claims cover the use of vafidemstat for the treatment of aggressiveness and social withdrawal associated with CNS diseases. Among the allowed claims, there are claims specifically aimed at the treatment of aggressiveness associated with Borderline Personality Disorder (BPD), Autism Spectrum Disorder (ASD), Alzheimer’s disease and other conditions, as well as claims directed to treating social withdrawal associated with diseases such as schizophrenia or ASD. Once formally granted, this European patent will remain in force until at least 2038, not including any potential patent term extensions. Additional patents in this family have already been granted or allowed in Europe, Australia, Canada, Hong Kong, Israel, South Korea, Malaysia, the Philippines, and Russia, with applications pending in other countries. Vafidemstat is in advanced clinical development for the treatment of aggression in psychiatric disorders, with an upcoming Phase III trial in aggression in BPD (protocol submitted), and a Phase II trial in aggression in ASD patients under preparation. In addition, a Phase II trial is ongoing in schizophrenia, with a focus on negative symptoms. One of the most prominent negative symptoms of schizophrenia is social withdrawal. “These new patent grants strengthen Oryzon’s global IP position by protecting key therapeutic indications under clinical development for iadademstat and vafidemstat, thereby extending the commercial life for both compounds”, said Neus Virgili, Oryzon’s Chief IP Officer.