PHAR, in collaboration with Genentech, presented the interim results of their claims-based algorithm used to identify patients with neuromyelitis optica spectrum disorder (NMOSD) at ACTRIMS 2022. The algorithm helps distinguish patients with NMOSD from patients with multiple sclerosis and other central nervous system inflammatory disorders, allowing researchers and clinicians to better estimate NMOSD burden. The poster can be viewed on the PHAR publications page and the abstract published in the May 2022 supplement of Multiple Sclerosis Journal Online.