Clinical Report: An Enhanced Frailty Index for Identifying High-Risk Populations in ALS
Overview
This study developed a modified frailty index (MFI) to identify individuals at elevated risk for amyotrophic lateral sclerosis (ALS).
Background
Amyotrophic lateral sclerosis (ALS) is a progressive motor neuron disease with a poor prognosis, necessitating early detection for better therapeutic outcomes. Current diagnostic methods often lead to delays in diagnosis, highlighting the need for effective screening tools. The frailty index (FI) has been linked to aging-related diseases, and its modified version (MFI) may enhance risk stratification for ALS.
Data Highlights
Index
Hazard Ratio (HR)
95% Confidence Interval (CI)
FI
4.58
1.31–16.07
MFI
4.59
2.79–7.53
Key Findings
Five deficits significantly associated with ALS were identified: falls, whole-body pain, long-standing illness, disability or infirmity, and self-rated health.
The MFI was constructed using these deficits and demonstrated a higher risk of ALS.
The combination of MFI, gender, age, and BMI provided the best discriminative ability for ALS risk.
The MFI achieved a C-index of 0.696 in the validation set.
Clinical Implications
The modified frailty index (MFI) can serve as a screening tool for identifying individuals at elevated risk for ALS in the general population.
Conclusion
The MFI, by focusing on specific deficits associated with ALS, enhances the ability to identify high-risk individuals.
