Two studies conducted by PHAR were presented at the 37th Congress of the European Committee for Treatment and Research in Multiple Sclerosis (ECTRIMS). The first study, done in partnership with Sanofi US, examined the effectiveness of teriflunomide in patients with relapsing multiple sclerosis (RMS) who switched from other DMTs following disease progression. The authors of this retrospective chart review study observed that RMS patients who switched to teriflunomide after progression may have experienced reductions in EDSS scores and stable or reduced relapse rates. In the second study, PHAR collaborated with Genentech to develop a claims-based algorithm to identify patients with neuromyelitis optica spectrum disorder (NMOSD) and distinguish them from patients with multiple sclerosis and other central nervous system inflammatory disorders, allowing researchers and clinicians to better estimate NMOSD burden. The posters can be viewed on the PHAR website publications page and the abstracts were published in the October supplement issue of Multiple Sclerosis Journal.