MAPT rs242557 variant is associated with hippocampus tau uptake on 18F-AV-1451 PET in non-demented elders.

Published

Journal Article

The microtubule-associated protein tau gene (MAPT) rs242557 variant is associated with multiple tauopathies and dementia. This study investigated whether it was correlated with brain tau-PET uptake in non-demented elders. Ninety non-demented elders were identified from the Alzheimer's Disease Neuroimaging Initiative cohort. We compared standardized uptake value ratios (SUVRs) of tau-PET tracer 18F-AV-1451 between rs242557 variant carriers and non-carriers in 25 regions of interest (ROIs). The minor allele A was associated with increased hippocampus 18F-AV-1451 uptake in non-demented elders (left: β = 0.111, Bonferroni corrected p = 0.035; right: β = 0.103, Bonferroni corrected p = 0.031). Aβ-positive participants (left: β = 0.206, Bonferroni corrected p = 0.029; right: β = 0.198, Bonferroni corrected p = 0.035) and APOE ε4 non-carriers (left: β = 0.140, Bonferroni corrected p = 0.006; right: β = 0.134, Bonferroni corrected p = 0.004) exhibited approximately the same findings in hippocampus. Considering no obvious associations in other regions, we confirmed the significant correlation of MAPT rs242557 risk variant with increased hippocampus tau deposition in non-demented elders. With higher magnitude signals in the hippocampus that is more likely to be uniquely affected in AD, the tau PET ligand 18F-AV-1451 seemed to possess a specific binding property for AD-like tau pathology.

Full Text

Duke Authors

Cited Authors

  • Shen, X-N; Miao, D; Li, J-Q; Tan, C-C; Cao, X-P; Tan, L; Yu, J-T

Published Date

  • January 31, 2019

Published In

Volume / Issue

  • 11 / 3

Start / End Page

  • 874 - 884

PubMed ID

  • 30708351

Pubmed Central ID

  • 30708351

Electronic International Standard Serial Number (EISSN)

  • 1945-4589

Digital Object Identifier (DOI)

  • 10.18632/aging.101783

Language

  • eng

Conference Location

  • United States