Parkinson's Disease Research Reveals Key Factors Affecting Survival in Patients with Dementia with Lewy Bodies

Strategic Insights -

According to a recent study published in the journal Neurology, researchers at the Mayo Clinic have identified key clinical features associated with shorter survival in patients with dementia with Lewy bodies (DLB). The study analyzed clinical data from 488 patients with probable DLB, who were followed annually between 1998 and 2024. The researchers found that the development of visual hallucinations (VHs) and parkinsonism during the disease course, as well as VHs at the time of DLB diagnosis, were associated with shorter survival.

Key Takeaways:

  • The study analyzed clinical data from 488 patients with probable DLB, of which 118 (24%) were women with a mean age of 71.9 ± 8.4 years at the time of meeting probable DLB criteria.
  • Shorter survival was associated with the development of VHs (hazard ratio [HR] 3.25, 95% CI 2.46-4.29) and parkinsonism (HR 2.28, 95% CI 1.54-3.39) during the disease course.
  • VHs at the time of DLB diagnosis (HR 1.60, 95% CI 1.18-2.16) and the development of all four core features were also associated with shorter survival.
  • In 191 patients with autopsy-confirmed DLB, VHs, parkinsonism, and all four core features were associated with shorter survival.
  • The study concluded that these findings have important prognostic and management implications for patients with DLB and their caregivers.

Statistics:

  • 488 patients with probable DLB were analyzed in the study, of which 118 (24%) were women.
  • The mean age of women at the time of meeting probable DLB criteria was 71.9 ± 8.4 years.
  • The hazard ratio (HR) for shorter survival associated with the development of VHs was 3.25 (95% CI 2.46-4.29).
  • The HR for shorter survival associated with the development of parkinsonism was 2.28 (95% CI 1.54-3.39).

Sources:

  • NewsRx. Data on Parkinson's Disease Reported by Researchers at Mayo Clinic (Core Clinical Features Associated With Survival in Patients With Dementia With Lewy Bodies). Mental Health Weekly Digest. October 20, 2025; p 173.
  • Neurology. Core Clinical Features Associated With Survival in Patients With Dementia With Lewy Bodies. Neurology, 2025;105(9).