MediciNova Receives Notice of Allowance for Second Patent Covering MN-166 (ibudilast) for the Treatment of Glioblastoma

LA JOLLA, Calif., April 20, 2020 (GLOBE NEWSWIRE) -- MediciNova, Inc., a biopharmaceutical company traded on the NASDAQ Global Market (NASDAQ:MNOV) and the JASDAQ Market of the Tokyo Stock Exchange (Code Number: 4875), today announced that it has received a Notice of Allowance from the U.S. Patent and Trademark Office for a pending patent application which covers MN-166 (ibudilast) for the treatment of glioblastoma.  This new patent has improved therapeutic claims compared to the first patent which covers MN-166 (ibudilast) for the treatment of glioblastoma, which was granted last year, and has a later expiration date than the first patent.

Once issued, the patent maturing from this allowed patent application is expected to expire no earlier than February 2039.  The allowed claims cover a method of treating a patient diagnosed with glioblastoma or recurrent glioblastoma, wherein the patient expresses methylated MGMT (O6-methylguanine-DNA methyltransferase), using MN-166 (ibudilast) in combination with one or more other therapeutic agents including temozolomide (TMZ), carmustine, bevacizumab, procarbazine, hydroxyurea, irinotecan, lomustine, nimotuzumab, sirolimus, mipsagargin, cabozantinib, onartuzumab, patupilone (epothilone B), and recombinant oncolytic poliovirus (PVS-RIPO).  The allowed claims cover a wide range of doses of MN-166 (ibudilast) during an optionally repeating dosing cycle.  The allowed claims also cover different types of glioblastoma including classical glioblastoma, proneural glioblastoma, mesenchymal glioblastoma, and neural glioblastoma.

Yuichi Iwaki, MD, PhD, President and Chief Executive Officer of MediciNova, Inc., commented, "We are very pleased to receive notice that this new patent will be granted as it offers better coverage than our first patent covering glioblastoma.  We believe it could substantially increase the potential value of MN‑166 as we have an ongoing clinical trial of MN-166 in combination with temozolomide for the treatment of recurrent glioblastoma at the Dana-Farber Cancer Institute, Harvard Medical School.  Results of the glioblastoma animal model study showed that median survival was longer in the group that received combination treatment with MN-166 plus temozolomide compared to the group that received the standard treatment of temozolomide alone, and this data was presented at the American Society of Clinical Oncology (ASCO) annual meeting.  Encouragingly, the FDA granted orphan-drug designation to MN-166 as adjunctive therapy to temozolomide for the treatment of glioblastoma based on this data."