Plasma biomarkers of Alzheimer's disease in the continuum of dementia with Lewy bodies

Patricia Diaz-Galvan, Scott A. Przybelski, Alicia Algeciras-Schimnich, Dan J. Figdore, Timothy G. Lesnick, Christopher G. Schwarz, Matthew L. Senjem, Jeffrey L. Gunter, Clifford R. Jack, Paul H. Min, Manoj K. Jain, Toji Miyagawa, Leah K. Forsberg, Julie A. Fields, Rodolfo Savica, Jonathan Graff-Radford, Vijay K. Ramanan, David T. Jones, Hugo Botha, Erik K. St LouisDavid S. Knopman, Neill R. Graff-Radford, Tanis J. Ferman, Ronald C. Petersen, Val J. Lowe, Bradley F. Boeve, Kejal Kantarci

Research output: Contribution to journalArticlepeer-review


INTRODUCTION: Patients with dementia with Lewy bodies (DLB) may have Alzheimers disease (AD) pathology that can be detected by plasma biomarkers. Our objective was to evaluate plasma biomarkers of AD and their association with positron emission tomography (PET) biomarkers of amyloid and tau deposition in the continuum of DLB, starting from prodromal stages of the disease. METHODS: The cohort included patients with isolated rapid eye movement (REM) sleep behavior disorder (iRBD), mild cognitive impairment with Lewy bodies (MCI-LB), or DLB, with a concurrent blood draw and PET scans. RESULTS: Abnormal levels of plasma glial fibrillary acidic protein (GFAP) were found at the prodromal stage of MCI-LB in association with increased amyloid PET. Abnormal levels of plasma phosphorylated tau (p-tau)-181 and neurofilament light (NfL) were found at the DLB stage. Plasma p-tau-181 showed the highest accuracy in detecting abnormal amyloid and tau PET in patients with DLB. DISCUSSION: The range of AD co-pathology can be detected with plasma biomarkers in the DLB continuum, particularly with plasma p-tau-181 and GFAP.

Original languageEnglish (US)
Pages (from-to)2485-2496
Number of pages12
JournalAlzheimer's and Dementia
Issue number4
StatePublished - Apr 2024


  • Alzheimer's disease
  • Lewy body
  • PET biomarkers
  • REM sleep behavior disorder
  • mild cognitive impairment
  • plasma biomarkers

ASJC Scopus subject areas

  • Epidemiology
  • Health Policy
  • Developmental Neuroscience
  • Clinical Neurology
  • Geriatrics and Gerontology
  • Cellular and Molecular Neuroscience
  • Psychiatry and Mental health


Dive into the research topics of 'Plasma biomarkers of Alzheimer's disease in the continuum of dementia with Lewy bodies'. Together they form a unique fingerprint.

Cite this