Insmed announced on Monday, September 21, 2026 that the FDA granted Priority Review to its supplemental New Drug Application for ARIKAYCE (amikacin liposome inhalation suspension) to treat Mycobacterium avium complex (MAC) lung disease as part of a combination antibacterial regimen, with a PDUFA target action date of January 28, 2027. The filing rests on the Phase 3b ENCORE study, which enrolled 425 patients, 82.4% of them with a first MAC infection, and met its primary endpoint and its multiplicity-controlled secondary culture-conversion endpoints. ARIKAYCE's PULMOVANCE liposomal technology delivers amikacin to lung macrophages while limiting systemic exposure. The drug received FDA accelerated approval in 2018 for refractory MAC lung disease and was the first product approved under the Limited Population Pathway for Antibacterial and Antifungal Drugs.
Roche (SIX: RO, ROG; OTCQX: RHHBY) announced Thursday September 10, 2026 that the FDA granted Priority Review to a supplemental Biologics License Application (sBLA) for Enspryng (satralizumab, a humanized anti-interleukin-6 receptor monoclonal antibody using recycling-antibody technology for extended IL-6 receptor blockade) for the treatment of myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD). MOGAD is a rare inflammatory central nervous system disorder attacking optic nerves, brain, and spinal cord with estimated prevalence of 0.51 to 3.42 per 100,000 people. It has no FDA-approved disease-modifying treatments. The Phase 3 METEOROID trial met its primary endpoint of time to first relapse during double-blind treatment with a 68% reduction in relapse risk versus placebo (p=0.0025) and secondary endpoints including 87% of Enspryng-treated patients relapse-free at 48 weeks (versus 67% on placebo), 66% lower annualized relapse rate, 79% fewer active MRI lesions, and 73% reduced rescue-therapy use. The FDA action date is January 10, 2027. Enspryng is currently approved in approximately 90 countries for neuromyelitis optica spectrum disorder (NMOSD).