A nonsynonymous mutation in PLCG2 reduces the risk of Alzheimer’s disease, dementia with Lewy bodies and frontotemporal dementia, and increases the likelihood of longevity

DESGESCO (Dementia Genetics Spanish Consortium), EADB (Alzheimer Disease European DNA biobank), EADB (Alzheimer Disease European DNA biobank), IFGC (International FTD-Genomics Consortium), IPDGC (The International Parkinson Disease Genomics Consortium), IPDGC (The International Parkinson Disease Genomics Consortium), RiMod-FTD (Risk and Modifying factors in Fronto-Temporal Dementia), Netherlands Brain Bank (NBB), The GIFT (Genetic Investigation in Frontotemporal Dementia and Alzheimer’s Disease) Study Group

Research output: Contribution to journalArticle (Academic Journal)

24 Citations (Scopus)
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Abstract

The genetic variant rs72824905-G (minor allele) in the PLCG2 gene was previously associated with a reduced Alzheimer’s disease risk (AD). The role of PLCG2 in immune system signaling suggests it may also protect against other neurodegenerative diseases and possibly associates with longevity. We studied the effect of the rs72824905-G on seven neurodegenerative diseases and longevity, using 53,627 patients, 3,516 long-lived individuals and 149,290 study-matched controls. We replicated the association of rs72824905-G with reduced AD risk and we found an association with reduced risk of dementia with Lewy bodies (DLB) and frontotemporal dementia (FTD). We did not find evidence for an effect on Parkinson’s disease (PD), amyotrophic lateral sclerosis (ALS) and multiple sclerosis (MS) risks, despite adequate sample sizes. Conversely, the rs72824905-G allele was associated with increased likelihood of longevity. By-proxy analyses in the UK Biobank supported the associations with both dementia and longevity. Concluding, rs72824905-G has a protective effect against multiple neurodegenerative diseases indicating shared aspects of disease etiology. Our findings merit studying the PLCγ2 pathway as drug-target.

Original languageEnglish
Pages (from-to)237-250
Number of pages14
JournalActa Neuropathologica
Volume138
Issue number2
Early online date27 May 2019
DOIs
Publication statusPublished - 1 Aug 2019

Keywords

  • Alzheimer’s disease
  • Amyotrophic lateral sclerosis
  • Dementia with Lewy bodies
  • Frontotemporal dementia
  • Longevity
  • Multiple sclerosis
  • Neurodegenerative disease
  • Parkinson’s disease
  • Phospholipase C Gamma 2
  • PLCG2
  • Progressive supranuclear palsy

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