Neuropsychiatric symptoms cluster and fluctuate over time in behavioral variant frontotemporal dementia
- PMID: 40079430
- PMCID: PMC12133425
- DOI: 10.1111/pcn.13810
Neuropsychiatric symptoms cluster and fluctuate over time in behavioral variant frontotemporal dementia
Abstract
Aim: Cognitive and behavioral phenomena define behavioral variant frontotemporal dementia (bvFTD), but neuropsychiatric symptoms (NPS) outside the core criteria are common throughout the illness. Identifying how NPS cluster in bvFTD may guide development of future therapies.
Methods: Participants (n = 354) with sporadic and genetic bvFTD were enrolled in the ARTFL LEFFTDS Longitudinal Frontotemporal Lobar Degeneration Consortium. Dementia stage was defined as early (CDR® plus NACC FTLD ≤1) or advanced (CDR® plus NACC FTLD ≥1). Baseline and annual follow-up visit data were analyzed to compare NPS across stages of bvFTD. Psychiatric states were captured using the Neuropsychiatric Inventory-Questionnaire and Clinician Judgment of Symptoms. Polychoric cluster analysis was used to describe NPS clusters.
Results: NPS were highly prevalent (≥90%) in early and late bvFTD. Four NPS clusters were identified based on magnitude of factor loadings: affective, disinhibited, compulsive, and psychosis. Neuropsychiatric symptoms fluctuated across visits. In the affective cluster, depression showed the least visit-to-visit stability. In the disinhibited cluster, elation showed the least stability. Symptoms in the psychosis and compulsive clusters (hallucinations, delusions, obsessions/compulsions, and hyperorality) were largely stable, persisting from visit-to-visit in more than 50% of cases. Symptoms in the affective and disinhibited cluster were associated with the highest caregiver burden, while symptoms in the obsessive cluster were associated with the most functional impairment.
Conclusion: NPS in bvFTD are frequent and cluster into four discrete groups. The fluctuating nature of some NPS in bvFTD suggests that they may not be reliable markers of disease progression or stage.
Keywords: FTLD; behavioral symptoms; behavioral variant frontotemporal dementia; frontotemporal lobar degeneration; neuropsychiatry.
© 2025 The Author(s). Psychiatry and Clinical Neurosciences © 2025 Japanese Society of Psychiatry and Neurology.
Update of
-
Neuropsychiatric Symptoms Cluster and Fluctuate Over Time in Behavioral Variant Frontotemporal Dementia.medRxiv [Preprint]. 2024 Sep 28:2024.09.26.24314180. doi: 10.1101/2024.09.26.24314180. medRxiv. 2024. Update in: Psychiatry Clin Neurosci. 2025 Jun;79(6):327-335. doi: 10.1111/pcn.13810. PMID: 39398998 Free PMC article. Updated. Preprint.
References
-
- Woolley JD, Khan BK, Murthy NK, Miller BL, Rankin KP. The diagnostic challenge of psychiatric symptoms in neurodegenerative disease: rates of and risk factors for prior psychiatric diagnosis in patients with early neurodegenerative disease. J Clin Psychiatry. Feb 2011;72(2):126–33. doi:10.4088/JCP.10m06382oli - DOI - PMC - PubMed
MeSH terms
Grants and funding
- KL2TR003099/TR/NCATS NIH HHS/United States
- R01 AG064093/AG/NIA NIH HHS/United States
- Robert and Nancy Hall Brain Research Fund
- U54NS092089-01/NH/NIH HHS/United States
- U01 NS102035/NS/NINDS NIH HHS/United States
- R01 AG075111/AG/NIA NIH HHS/United States
- R01 AG075404/AG/NIA NIH HHS/United States
- K23 AG088248/AG/NIA NIH HHS/United States
- R01 AG068881/AG/NIA NIH HHS/United States
- P30 AG066509/AG/NIA NIH HHS/United States
- K23 AG059888/AG/NIA NIH HHS/United States
- K23AG088248/AG/NIA NIH HHS/United States
- KL2 TR003099/TR/NCATS NIH HHS/United States
- U01 AG045390/AG/NIA NIH HHS/United States
- U54 NS092089/NS/NINDS NIH HHS/United States
- UW CSTPA T32AG052354/AG/NIA NIH HHS/United States
- P30 AG066507/AG/NIA NIH HHS/United States
- R44 AG080861/AG/NIA NIH HHS/United States
- R01 NS108452/NS/NINDS NIH HHS/United States
- Association for Frontotemporal Degeneration
- U19 AG063911/AG/NIA NIH HHS/United States
- ALZ/Alzheimer's Association/United States
- U19AG063911/NH/NIH HHS/United States
- Tau Consortium
- K23 AG059891/AG/NIA NIH HHS/United States
- T32 AG052354/AG/NIA NIH HHS/United States
- L30 AG083912/AG/NIA NIH HHS/United States
- U01AG045390-01A1/NH/NIH HHS/United States
LinkOut - more resources
Full Text Sources
Medical