Jazz Pharmaceuticals plc today announced that the U.S. Food and Drug Administration (FDA) has granted accelerated approval for Modeyso™ (dordaviprone) for the treatment of adult and pediatric patients 1 year of age and older with diffuse midline glioma harboring an H3 K27M mutation with progressive disease following prior therapy.1 Continued approval for this indication may be contingent upon verification and description of clinical benefit in the Phase 3 ACTION confirmatory trial.1

Modeyso is the first and only treatment option approved by the FDA for this ultra-rare and aggressive brain tumor that affects an estimated 2,000 people in the U.S. each year, many of whom are children and young adults.2 The disease is characterized by rapid progression and historically has had no effective systemic treatment options.3 To address this urgent unmet patient need, Modeyso is expected to be commercially available in the coming weeks.

"This is a major turning point in neuro-oncology," said Patrick Wen, M.D., Director, Center for Neuro-Oncology, Dana-Farber Cancer Institute and Professor of Neurology, Harvard Medical School. "For the first time, we have an FDA-approved therapy for patients with recurrent H3 K27M-mutant diffuse midline glioma. While outcomes remain challenging for many patients, the objective responses observed with dordaviprone, including durable benefit in some patients, represent a meaningful advancement. This therapy was developed with the underlying biology of the tumor in mind and introduces a new treatment option for a population with historically limited choices."

Modeyso is administered as an oral capsule once weekly. The FDA's decision was based on an integrated efficacy analysis of 50 patients with recurrent H3 K27M-mutant diffuse midline glioma, selected from five open-label clinical studies based on prespecified eligibility criteria. The overall response rate (ORR), as assessed by blinded independent central review (BICR) using Response Assessment in Neuro-Oncology (RANO) 2.0 criteria, was 22% (95% CI: 12 to 36), with an additional responder identified by integrated RANO 2.0. Among responders, the median duration of response was 10.3 months (95% CI: 7.3 to 15.2), with 73% maintaining their response for at least six months and 27% for at least 12 months.1

"The FDA approval of Modeyso is a milestone moment for the patients and families who have long needed new options, the clinicians who have tirelessly searched for solutions, and the researchers and advocates who never gave up," said Joshua E. Allen, Ph.D., Chief Scientific Officer, Chimerix, a Jazz Pharmaceuticals Company. "We're proud to deliver precisely the kind of transformative innovation we strive for, and we congratulate our combined Chimerix and Jazz team, and the community who worked together tirelessly to bring this treatment forward. This approval not only equips clinicians with the first targeted option for this disease but also signals a meaningful shift in what patients and families can expect after diagnosis. We would like to extend our thanks to the patients, advocates, clinicians, principal investigators, scientists, regulators and partner institutions who made this possible."

"This approval represents a long-awaited treatment option for families affected by H3 K27M-mutant diffuse midline glioma," said David F. Arons, President and Chief Executive Officer of the National Brain Tumor Society. "This is a fast-moving, devastating disease that turns families' lives upside down. For years, this diagnosis has lacked an approved treatment and today, that changes. Families finally have a treatment option, and a reason to believe in more time together to make memories that might not have otherwise been possible."

The safety of Modeyso was evaluated in 376 adult and pediatric patients with glioma across four open-label clinical studies. Serious adverse reactions occurred in 33% of patients. Serious adverse reactions reported in more than 2% of patients included hydrocephalus (5%), vomiting (4.3%), headache (3.2%), seizure (2.4%) and muscular weakness (2.1%). The most common adverse reactions in patients who received Modeyso (≥20%) were fatigue, headache, vomiting, nausea and musculoskeletal pain.

Source: prnewswire.com