Cited by 39Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

The most prevalent rare coding variants of TREM2 conferring risk of Alzheimer's disease: A systematic review and meta‑analysis

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Li, Rong, Wang, Xia, He, Pengfei·2021·Experimental and Therapeutic Medicine

Abstract

Rare variants in the coding sequence of triggering receptor expressed on myeloid cells 2 (TREM2) have been identified in Alzheimer's disease (AD). They have been reported to be causative or confer risk of AD in several populations. However, the results are not conclusive. Therefore, a meta-analysis was performed to investigate the association between rare variants of TREM2 and the susceptibility to AD. Case-control studies meeting the inclusion criteria were identified by searching the PubMed, Embase and Web of Science databases. The association between four commonly analyzed variants of TREM2, p.Arg47His (R47H), p.Arg62His (R62H), p.Asp87Asn (D87N) and p.His157Tyr (H157Y), and the risk of AD were evaluated by meta-analyses with the fixed-effects model. Finally, a total of 26 datasets comprising 28,007 cases and 45,121 controls were included. There was no or low between-study heterogeneity in all comparisons. A significantly increased risk of AD was observed in carriers of R47H compared with non-carriers [odds ratio (OR)=3.88, 95% CI: 3.17-4.76, P<0.001], R62H (OR=1.37, 95% CI: 1.11-1.70, P=0.004) and H157Y (OR=4.22, 95% CI: 1.93-9.21, P<0.001). However, R62H only conferred a mild risk compared to R47H and H157Y (OR=1.37 vs. 3.88 and 4.22, respectively). D87N was not associated with AD susceptibility. Sensitivity analysis indicated that the association identified for R62H was not significant (P=0.192) when excluding a large-sample study. Subgroup analysis according to ethnicity revealed significant associations (R47H and H157Y) in Caucasians but not in Asians. In conclusion, rare coding variants of TREM2 were associated with an elevated risk of AD, particularly in Caucasians.

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  • Numerous TREM2 mutations linked with AD have been identified, including R47H, R62H, N68K, D87N, and T96K.

    “Numerous TREM2 mutations linked with AD have been identified, including R47H, R62H, N68K, D87N, T96K, and so on.191,193”

    From Role of neuroinflammation in neurodegeneration development (2023) · cites this paper as [193]

    The Introduction identifies R47H and R62H as AD-linked TREM2 variants and reports D87N in AD subjects. The Results and Discussion, however, find no significant pooled association between D87N and AD susceptibility. Searches for N68K and T96K found no supporting passages in our copy. Section labels are available, but page numbers are not. (LLM, conf=0.88)

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Authors
Li, R., Wang, X., & He, P.
Affiliations
Shanxi Medical University (CN)
Corresponding author
Li, Rong
Venue
Experimental and Therapeutic Medicine
Published
2021-02-11
Volume
21
Issue
4
Pages
347-347
ISSN
  • 1792-0981 (ISSN-L)
  • 1792-1015
OpenAlex
W3127595830
Cited by
39
References
42
Citations by year
2026: 7 · 2025: 9 · 2024: 9 · 2023: 5 · 2022: 7 · 2021: 2
FWCI
0.77
Type
journal article
Language
en
Open access
Licence
cc-by-nc-nd
Locations
  • Experimental and Therapeutic Medicine (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
TREM2, Alzheimer's disease, rare coding variants, genetic susceptibility, ethnic differences, Caucasians, Asian populations

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