Abstract Details

Title The effect of lateral therapy switches to oral moderate-efficacy drugs in multiple sclerosis. A nationwide cohort study.

Topic Multiple Sclerosis

Presentation(s) MS and CNS Inflammatory Disease Posters (7:00 AM-5:00 PM)

Poster/Presentation
Number 048

Objective

We investigated the effect of switching patients with stable relapsing-remitting multiple sclerosis treated with interferon-beta or glatiramer acetate to oral moderate-efficacy disease-modifying therapies with regards to occurrences of disability accumulation, relapses and future treatment discontinuation.

Background Switching between first-line disease-modifying therapies in clinically stable relapsing-remitting multiple sclerosis (RRMS) patients due to reasons other than disease activity is frequent, but evidence on the effect of this practice is limited.

Design/Methods

Using the Danish Multiple Sclerosis Registry, we identified RRMS patients without disease activity who either (1) stayed on injectable platform therapy (interferon-β or glatiramer acetate) or (2) switched to dimethyl fumarate (DMF) or teriflunomide (TFL) and compared treatment outcomes using propensity-score based methods and marginal structural models (MSM).

Results

We included 3,206 patients in the study. We found no change in risk of 6-month confirmed expanded disability status scale (EDSS) score worsening in patients switching to DMF (hazard ratio (HR): 1.13, 95% confidence interval (95%CI): 0.86-1.48) or TFL (HR: 1.09, 95%CI: 0.87-1.38).

The risk of suffering any relapse was decreased when switching to DMF (HR: 0.63, 95%CI: 0.44-0.90), while unchanged when switching to TFL (HR: 1.04, 95%CI: 0.80-1.35). MSM analyses showed similar results.

Conclusions

Switching from injectable platform therapies to oral first-line therapies in clinically stable RRMS patients does not appear to alter the risk of disability accumulation or emergence of relapses. Switching to DMF may reduce the occurrence of relapses.

Authors/Disclosures
Mathias Buron PRESENTER	Mathias Buron has nothing to disclose.
Tomas Kalincik	Tomas Kalincik has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Roche. Tomas Kalincik has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Sanofi Genzyme. Tomas Kalincik has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Novartis. Tomas Kalincik has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Merck. Tomas Kalincik has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Biogen. Tomas Kalincik has received personal compensation in the range of $500-$4,999 for serving as a Consultant for National Health and Medical Research Council. Tomas Kalincik has received personal compensation in the range of $500-$4,999 for serving as a Consultant for MS Research Australia. Tomas Kalincik has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Biogen. Tomas Kalincik has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Roche. Tomas Kalincik has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Sanofi Genzyme. Tomas Kalincik has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Novartis. Tomas Kalincik has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Merck. Tomas Kalincik has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Janssen. Tomas Kalincik has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Bristol Myers Squibb. Tomas Kalincik has received personal compensation in the range of $5,000-$9,999 for serving on a Speakers Bureau for WebMD Global. Tomas Kalincik has received personal compensation in the range of $5,000-$9,999 for serving on a Speakers Bureau for Novartis. Tomas Kalincik has received personal compensation in the range of $5,000-$9,999 for serving on a Speakers Bureau for Biogen. Tomas Kalincik has received personal compensation in the range of $5,000-$9,999 for serving on a Speakers Bureau for Sanofi Genzyme. Tomas Kalincik has received personal compensation in the range of $5,000-$9,999 for serving on a Speakers Bureau for Teva. Tomas Kalincik has received personal compensation in the range of $5,000-$9,999 for serving on a Speakers Bureau for BioCSL. Tomas Kalincik has received personal compensation in the range of $5,000-$9,999 for serving on a Speakers Bureau for Merck. Tomas Kalincik has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Eisai. The institution of Tomas Kalincik has received research support from Biogen. The institution of Tomas Kalincik has received research support from Novartis. The institution of Tomas Kalincik has received research support from Genzyme. The institution of Tomas Kalincik has received research support from Roche. The institution of Tomas Kalincik has received research support from Celgene. The institution of Tomas Kalincik has received research support from Merck. The institution of Tomas Kalincik has received research support from MSBase Foundation. The institution of Tomas Kalincik has received research support from ARSEP and EDMUS Foundations. The institution of Tomas Kalincik has received research support from MS Research Australia. The institution of Tomas Kalincik has received research support from National Health and Medical Research Council. The institution of Tomas Kalincik has received research support from Australian Research Council. The institution of Tomas Kalincik has received research support from MS Society. The institution of Tomas Kalincik has received research support from Trish Foundation. Tomas Kalincik has a non-compensated relationship as a scientific leadership group chair with MSBase Foundation that is relevant to AAN interests or activities.
Finn Sellebjerg, MD (Copenhagen University Hospital Rigshospitalet)	Dr. Sellebjerg has received personal compensation for serving as an employee of Danish Multiple Sclerosis Society. Dr. Sellebjerg has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Novartis. Dr. Sellebjerg has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Biogen. Dr. Sellebjerg has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Novartis. Dr. Sellebjerg has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Roche. Dr. Sellebjerg has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Sanofi Genzyme. Dr. Sellebjerg has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Biogen. Dr. Sellebjerg has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Roche. Dr. Sellebjerg has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Novartis. Dr. Sellebjerg has received personal compensation in the range of $500-$4,999 for serving as an officer or member of the Board of Directors for Gangsted Foundation. Dr. Sellebjerg has received personal compensation in the range of $500-$4,999 for serving as an officer or member of the Board of Directors for Warwara Larsen Foundation. The institution of Dr. Sellebjerg has received research support from Biogen. The institution of Dr. Sellebjerg has received research support from Merck. The institution of Dr. Sellebjerg has received research support from Novartis. The institution of Dr. Sellebjerg has received research support from Sanofi Genzyme. Dr. Sellebjerg has received publishing royalties from a publication relating to health care.
Per Soelberg Sorensen	No disclosure on file
Melinda Magyari, MD	Dr. Magyari has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Roche. Dr. Magyari has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Merck. Dr. Magyari has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Biogen. Dr. Magyari has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Merck. Dr. Magyari has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Novartis. Dr. Magyari has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Sanofi. Dr. Magyari has received personal compensation in the range of $0-$499 for serving on a Scientific Advisory or Data Safety Monitoring board for Alexion. Dr. Magyari has received personal compensation in the range of $0-$499 for serving on a Scientific Advisory or Data Safety Monitoring board for Bristol Myers Squibb. The institution of Dr. Magyari has received research support from The Danish MS Society. The institution of Dr. Magyari has received research support from Biogen. The institution of Dr. Magyari has received research support from Novartis. The institution of Dr. Magyari has received research support from Roche. The institution of Dr. Magyari has received research support from Merck. The institution of Dr. Magyari has received research support from Sanofi.

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