Apolipoprotein E genotype does not associate with disease severity measured by Multiple Sclerosis Severity Score.

Area of Science:

• Neuroimmunology
• Genetics

Background:

• Conflicting results exist regarding the association between apolipoprotein E (APOE) polymorphism and multiple sclerosis (MS) severity.
• The Multiple Sclerosis Severity Score (MSSS) offers a standardized method for assessing MS progression using single disability assessments.

Purpose of the Study:

• To investigate the correlation between APOE genotype and MS severity using the MSSS in a defined patient cohort.
• To evaluate the utility of MSSS in genetic research for MS.

Main Methods:

• Studied 82 MS patients with at least 2 years of disease duration.
• Collected demographic and clinical data, including age of onset, disease duration, EDSS, and relapse rates.
• Calculated progression index (PI), relapse rate (RR), and MSSS for all patients.

Main Results:

• No significant association was found between APOE genotype (E2 or E4 carriers) and MSSS scores.
• APOE E4 carriers exhibited significantly lower relapse rates (RR) and progression indices (PI).

Conclusions:

• APOE genotype does not influence MS severity as measured by MSSS.
• MSSS is a reliable and recommended tool for measuring MS severity in genetic studies, despite other indicators like PI suggesting potential associations.