Determinants of disability development in patients with multiple sclerosis

Area of Science:

• Neurology
• Clinical Research
• Epidemiology

Background:

• Multiple sclerosis (MS) is a prevalent chronic neurological condition impacting young adults.
• Understanding factors influencing disability progression and disease phase transition is crucial for patient management.

Purpose of the Study:

• To identify demographic and clinical factors associated with irreversible disability development in MS.
• To determine predictors for the transition from relapsing-remitting MS (RRMS) to progressive MS (PMS).

Main Methods:

• Retrospective analysis of 741 patients diagnosed with RRMS and PMS using McDonald criteria.
• Kaplan-Meier analysis to assess time to Expanded Disability Status Scale (EDSS) milestones (EDSS 4 and EDSS 6).

Main Results:

• Factors predicting reaching EDSS 4 and EDSS 6 included age >40, polysymptomatic onset, pyramidal/bladder-intestinal symptoms, ≥7 relapses in 5 years, and <2 years between first two episodes.
• Progression from EDSS 4 to EDSS 6 was associated with pyramidal/bladder-intestinal onset, 4-6 relapses in 5 years, delayed treatment (>2 years), and smoking.

Conclusions:

• Identified key demographic and clinical predictors for disability progression and phase transition in Turkish MS patients.
• Further research is needed to elucidate the underlying MS pathophysiology related to these identified parameters.