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Progranulin mutations in clinical and neuropathological Alzheimer's disease
Author(s) -
Vardarajan Badri N.,
ReyesDumeyer Dolly,
Piriz Angel L.,
Lantigua Rafael A.,
Medrano Martin,
Rivera Diones,
JiménezVelázquez Ivonne Z.,
Martin Eden,
PericakVance Margaret A.,
Bush William,
Farrer Lindsay,
Haines Jonathan L.,
Wang LiSan,
Leung Yuk Yee,
Schellenberg Gerard,
Kukull Walter,
De Jager Philip,
Bennett David A.,
Schneider Julie A.,
Mayeux Richard
Publication year - 2022
Publication title -
alzheimer's and dementia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.713
H-Index - 118
eISSN - 1552-5279
pISSN - 1552-5260
DOI - 10.1002/alz.12567
Subject(s) - frontotemporal lobar degeneration , hippocampal sclerosis , pathology , neuropathology , amyotrophic lateral sclerosis , alzheimer's disease , disease , neurofibrillary tangle , cohort , medicine , frontotemporal dementia , dementia , biology , neuroscience , senile plaques , temporal lobe , epilepsy
Abstract Introduction Progranulin ( GRN ) mutations occur in frontotemporal lobar degeneration (FTLD) and in Alzheimer's disease (AD), often with TDP‐43 pathology. Methods We determined the frequency of rs5848 and rare, pathogenic GRN mutations in two autopsy and one family cohort. We compared Braak stage, β‐amyloid load, hyperphosphorylated tau (PHFtau) tangle density and TDP‐43 pathology in GRN carriers and non‐carriers. Results Pathogenic GRN mutations were more frequent in all cohorts compared to the Genome Aggregation Database (gnomAD), but there was no evidence for association with AD. Pathogenic GRN carriers had significantly higher PHFtau tangle density adjusting for age, sex and APOE ε4 genotype. AD patients with rs5848 had higher frequencies of hippocampal sclerosis and TDP‐43 deposits. Twenty‐two rare, pathogenic GRN variants were observed in the family cohort. Discussion GRN mutations in clinical and neuropathological AD increase the burden of tau‐related brain pathology but show no specific association with β‐amyloid load or AD.