Evidence map›Paper›PMID 33732320›Full record

ArticleExperimental and therapeutic medicine2021

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

Rong Li, Xia Wang, Pengfei He

Open access · diamondAbstract read
In one paragraph

Article in Experimental and therapeutic medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
1.8field-weighted citation impact, top 15% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 31 citations in OpenAlex.

  1. TREM2 in neurodegeneration and diseases.Molecular psychiatry · 2026
    Review
  2. Article
  3. Functional Analysis of Late-Onset Alzheimer's Disease Risk Genes inbioRxiv : the preprint server for biology · 2026
    Article
  4. Review
  5. Review
  6. Review
  7. International journal of molecular sciences · 2025
    Review
  8. Article
  9. Review
  10. Article
  11. Review
  12. Review
  13. Review
  14. Review
  15. Key variants via the Alzheimer's Disease Sequencing Project whole genome sequence data.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    Article
  16. Role of neuroinflammation in neurodegeneration development.Signal transduction and targeted therapy · 2023
    Review
  17. APOE and immunity: Research highlights.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2023
    Review
  18. The role of TREM2 in Alzheimer's disease: from the perspective of Tau.Frontiers in cell and developmental biology · 2023
    Review
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

Rong LiDepartment of Health Management, Yuncheng Central Hospital, Shanxi Medical University, Yuncheng, Shanxi 044000, P.R. China.
Xia WangDrug Clinical Trial Center, Yuncheng Central Hospital, Shanxi Medical University, Yuncheng, Shanxi 044000, P.R. China.
Pengfei HeDepartment of Health Management, Yuncheng Central Hospital, Shanxi Medical University, Yuncheng, Shanxi 044000, P.R. China.
Shanxi Medical University · CNYuncheng University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

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.

Indexed as

Alzheimer's diseasemeta-analysisR47HsusceptibilityTREM2

Identifiers

PMID33732320
PMCPMC7903442
OpenAlexW3127595830

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.