Factors influencing accelerated progression in behavioral variant frontotemporal dementia

Area of Science:

• Neuroscience
• Clinical Neurology

Background:

• Behavioral variant frontotemporal dementia (bvFTD) is a neurodegenerative disease characterized by progressive decline.
• Identifying factors associated with accelerated disease progression is crucial for patient management and therapeutic development.

Purpose of the Study:

• To identify neuropsychiatric, motor, and cognitive features that predict accelerated disease progression in bvFTD.
• To differentiate predictive markers between mild and moderate stages of bvFTD.

Main Methods:

• 192 participants with bvFTD were classified by disease severity (mild/moderate) using CDR+NACC FTLD scores.
• Progression rate (accelerated vs. non-accelerated) was determined by changes in CDR+NACC FTLD-SB scores.
• Random forest modeling and logistic regression identified predictive features for accelerated progression.

Main Results:

• In mild bvFTD, episodic memory impairment and frontal-behavioral neuropsychiatric symptoms predicted accelerated progression.
• In moderate bvFTD, language impairments and motor signs were the strongest predictors of accelerated progression.
• Identified features significantly improved prediction in mild bvFTD (∆R2=.22, p<.001) and showed a trend in moderate bvFTD (∆R2=.11, p=.08).

Conclusions:

• Distinct clinical profiles predict accelerated progression in mild versus moderate bvFTD.
• Stage-specific clinical markers are important for prognosis and care in bvFTD.
• These findings highlight the need for tailored approaches based on disease severity.