Health-Related Quality of Life with Diroximel Fumarate in Patients with Relapsing Forms of Multiple Sclerosis: Findings from Qualitative Research Using Patient Interviews.

Multiple sclerosis (MS), an immune-related disease, may present with neurological symptoms that come and go. Diroximel fumarate (DRF) is a next-generation oral treatment for MS, which has been shown in clinical trials to have fewer gastrointestinal side effects compared to dimethyl fumarate (DMF), another oral treatment. Patients' perspective can shed light on what they value when choosing a treatment, so we interviewed 17 people with MS about how DRF treatment affects their daily life and work. The study participants (49.3 years old on average) received DRF for ~ 6 weeks to 10 months. Around 5 in 10 people had positive feelings about their current health following treatment with DRF. Most felt there was either improvement or no negative change in quality of life since starting DRF treatment; DRF did not affect their work or daily obligations. Treatment characteristics of DRF that were perceived as most important included ease of administration, minimal and manageable side effects, and the facilitation of overall wellness and quality of life. While the oral dosing of DRF was more convenient than injectable or infusion therapy options, about half of the respondents preferred a less frequent treatment regimen than the twice daily dosing of DRF which needs to be taken with food. However, those who switched to DRF from DMF (or other oral medications for MS) expressed that the transition was smooth. Understanding factors that are important to patients can guide treatment choices and help patients stay on treatment longer and have better MS outcomes.