IFNA1 and insomnia measurement: As compared to Pokryszko-Dragan’s study, their cohort of PwMS had a higher rate of insomnia of 49%, a higher EDSS score of 3.2, only 32% of PwMS were treated on interferon (IFN) or glatiramer acetate (GA), and as many as 66% of PwMS did not used DMT [30].