Evidence map›Paper›PMID 29675612›Full record

ArticleHuman genetics2018

Complement receptor 1 gene (CR1) intragenic duplication and risk of Alzheimer's disease.

Ezgi Kucukkilic, Keeley Brookes, Imelda Barber, Tamar Guetta-Baranes, ARUK Consortium, Kevin Morgan, Edward J Hollox

Abstract read
In one paragraph

Article in Human genetics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
–field-weighted citation impact
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

29 citing papers in PubMed.

  1. Article
  2. Review
  3. Review
  4. Review
  5. fSuSiE enables fine-mapping of QTLs from genome-scale molecular profiles.bioRxiv : the preprint server for biology · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Immune receptors and aging brain.Bioscience reports · 2024
    Review
  11. Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Review
  20. Uncurtaining the pivotal role of ABC transporters in diabetes mellitus.Environmental science and pollution research international · 2021
    Review
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

7 authors.

Ezgi KucukkilicDepartment of Genetics and Genome Biology, University of Leicester, Leicester, UK.
Keeley BrookesSchool of Life Sciences, University of Nottingham, Nottingham, UK.
Imelda BarberSchool of Life Sciences, University of Nottingham, Nottingham, UK.
Tamar Guetta-BaranesSchool of Life Sciences, University of Nottingham, Nottingham, UK.
ARUK Consortium
Kevin MorganSchool of Life Sciences, University of Nottingham, Nottingham, UK.
Edward J HolloxDepartment of Genetics and Genome Biology, University of Leicester, Leicester, UK. ejh33@leicester.ac.uk.ORCID http://orcid.org/0000-0002-0115-2298

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Single nucleotide variants (SNVs) within and surrounding the complement receptor 1 (CR1) gene show some of the strongest genome-wide association signals with late-onset Alzheimer's disease. Some studies have suggested that this association signal is due to a duplication allele (CR1-B) of a low copy repeat (LCR) within the CR1 gene, which increases the number of complement C3b/C4b-binding sites in the mature receptor. In this study, we develop a triplex paralogue ratio test assay for CR1 LCR copy number allowing large numbers of samples to be typed with a limited amount of DNA. We also develop a CR1-B allele-specific PCR based on the junction generated by an historical non-allelic homologous recombination event between CR1 LCRs. We use these methods to genotype CR1 and measure CR1-B allele frequency in both late-onset and early-onset cases and unaffected controls from the United Kingdom. Our data support an association of late-onset Alzheimer's disease with the CR1-B allele, and confirm that this allele occurs most frequently on the risk haplotype defined by SNV alleles. Furthermore, regression models incorporating CR1-B genotype provide a better fit to our data compared to incorporating the SNV-defined risk haplotype, supporting the CR1-B allele as the variant underlying the increased risk of late-onset Alzheimer's disease.

Indexed as

Genetic Predisposition to DiseaseAdultAgedAged, 80 and overAllelesAlzheimer DiseaseBinding SitesComplement C3bComplement C4b-Binding ProteinDNA Copy Number VariationsFemaleGene DuplicationGenome-Wide Association StudyGenotypeHumansMaleComplement C3bComplement C4b-Binding ProteinCR1 protein, humanReceptors, Complement 3b

Identifiers

PMID29675612
PMCPMC5937907

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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.