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Delays in treatment initiation for patients with relapsing-remitting multiple sclerosis: A nationwide population-based study

  • Maiju Savolainen
  • , Matias Viitala
  • , Katariina Kuutti
  • , Hanna Kuusisto
  • , Ilkka Rauma
  • , Mervi Ryytty
  • , Johanna Krüger
  • , Päivi Hartikainen
  • , Marja Niiranen
  • , Jukka Saarinen
  • , Merja Soilu-Hänninen
  • , Sini M Laakso

Research output: Contribution to journal › Article › Scientific › peer-review

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Abstract

BACKGROUND: Early disease-modifying therapy (DMT) improves outcomes in patients with relapsing-remitting multiple sclerosis (pwRRMS), but reasons for delayed or absent initiation are unclear.

OBJECTIVE: To investigate reasons and trends for delayed or absent DMT initiation among Finnish pwRRMS.

METHODS: A nationwide retrospective study using the Finnish MS Registry identified 2363 pwRRMS diagnosed between 2010 and 2019 in the participating centers. Patients never receiving DMT or starting >2 years post-diagnosis were compared to those initiating DMT within a year of diagnosis.

RESULTS: We identified 193 pwRRMS who never started DMT, 88 had delayed initiation over 2 years, and 1944 started within a year. The no/delayed DMT group was older at diagnosis (mean 38.7 vs 35.2 years, p < 0.001). Corticosteroid-treated relapses were more frequent among early initiators. Optic neuritis was more common in patients with delayed or no DMT. Treatment refusal was the primary reason for delayed/no DMT (35.6%), with 68% of refusers never starting. From 2010to 2019, delayed/no DMT initiation (p = 0.007) and treatment refusal (p = 0.004) decreased significantly.

CONCLUSION: Delayed or absent DMT initiation is linked to older age, optic neuritis, disease inactivity, and treatment refusal, which declined over time, likely due to expanded DMT options.

Original languageEnglish
Article number20552173251360358
JournalMultiple Sclerosis Journal - Experimental, Translational and Clinical
Volume11
Issue number3
DOIs
Publication statusPublished - 2025
Publication typeA1 Journal article-refereed

Publication forum classification

  • Publication forum level 1

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