Registers of multiple sclerosis in Denmark.

Area of Science:

• Epidemiology
• Neurology
• Public Health

Background:

• Denmark maintains two comprehensive nationwide population-based registers for multiple sclerosis (MS).
• The Danish Multiple Sclerosis Registry (DMSR) focuses on epidemiological data, including prevalence, incidence, and survival.
• The Danish Multiple Sclerosis Treatment Register monitors patients receiving disease-modifying treatments since 1996.

Purpose of the Study:

• To describe the scope and utility of Denmark's two national MS registers.
• To highlight their contributions to understanding MS risk factors and treatment efficacy.
• To inform researchers about available data for epidemiological and clinical studies.

Main Methods:

• Utilizing data from the Danish Multiple Sclerosis Registry (DMSR) for historical prospective studies on environmental exposures.
• Analyzing data from the Danish Multiple Sclerosis Treatment Register for treatment-related outcomes, including antibody development.
• Leveraging nationwide population-based data for comprehensive epidemiological analysis.

Main Results:

• The DMSR has provided nationwide incidence and prevalence data for multiple sclerosis.
• Studies using the DMSR have identified and exonerated suspected environmental risk factors for MS.
• The Treatment Register has advanced knowledge regarding antibodies against biological drugs used in MS therapy.

Conclusions:

• Denmark's dual MS registers offer robust resources for epidemiological research and clinical insights.
• These registers are crucial for identifying MS risk factors and evaluating treatment effectiveness.
• Continued use of these registers will enhance understanding and management of multiple sclerosis.