Evidence map›Paper›PMID 22003108›Full record

SynthesisInvestigative ophthalmology & visual science2011

Complement factor D in age-related macular degeneration.

Chloe M Stanton, John R W Yates, Anneke I den Hollander, Johanna M Seddon, Anand Swaroop, Dwight Stambolian, Sascha Fauser, Carel Hoyng, Yi Yu, Kanda Atsuhiro and 10 more

Open access · bronzeAbstract readMeta-Analysis
In one paragraph

Synthesis in Investigative ophthalmology & visual science, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

49 citing papers in PubMed, 98 citations in OpenAlex.

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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

20 authors at 12 institutions in 5 countries.

Chloe M StantonMRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, Edinburgh, United Kingdom.
John R W Yates
Anneke I den Hollander
Johanna M Seddon
Anand Swaroop
Dwight Stambolian
Sascha Fauser
Carel Hoyng
Yi Yu
Kanda Atsuhiro
Kari Branham
Mohammad Othman
Wei Chen
Elod Kortvely
Kevin Chalmers
Caroline Hayward
Anthony T Moore
Baljean Dhillon
Marius Ueffing
Alan F Wright
MRC Institute of Genetics and Molecular Medicine · GBEye Center · SANational Eye Institute · USSTZ eyetrial · DETufts Medical Center · USUniversity College London · GBPrincess Alexandra Eye Pavilion · GBRadboud University Medical Center · NLRadboud University Nijmegen · NLUniversity Hospital Cologne · DEUniversity of Michigan–Ann Arbor · USUniversity of Pennsylvania · US

Funding

ETIOLOGIC STUDIES OF AGE-RELATED MACULAR DEGENERATIONR01EY011309 · NEI · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI SEDDON, JOHANNA M · 2003 to 2017
$9.3M
Genetic susceptibility and common multi-factorial retinal/macular diseasesZIAEY000475 · NEI · NATIONAL EYE INSTITUTE · PI SWAROOP, ANAND · 2009 to 2014
$6.9M
Intramural NIH HHSMedical Research Council G0000067Medical Research Council MC_PC_U127561128Medical Research Council MC_U127584475NEI NIH HHS R01 EY011309NEI NIH HHS R01-EY11309
6 · The paper itself

Abstract

purposeTo examine the role of complement factor D (CFD) in age-related macular degeneration (AMD) by analysis of genetic association, copy number variation, and plasma CFD concentrations.

methodsSingle nucleotide polymorphisms (SNPs) in the CFD gene were genotyped and the results analyzed by binary logistic regression. CFD gene copy number was analyzed by gene copy number assay. Plasma CFD was measured by an enzyme-linked immunosorbent assay.

resultsGenetic association was found between CFD gene SNP rs3826945 and AMD (odds ratio 1.44; P = 0.028) in a small discovery case-control series (462 cases and 325 controls) and replicated in a combined cohorts meta-analysis of 4765 cases and 2693 controls, with an odds ratio of 1.11 (P = 0.032), with the association almost confined to females. Copy number variation in the CFD gene was identified in 13 out of 640 samples examined but there was no difference in frequency between AMD cases (1.3%) and controls (2.7%). Plasma CFD concentration was measured in 751 AMD cases and 474 controls and found to be elevated in AMD cases (P = 0.00025). The odds ratio for those in the highest versus lowest quartile for plasma CFD was 1.81. The difference in plasma CFD was again almost confined to females.

conclusionsCFD regulates activation of the alternative complement pathway, which is implicated in AMD pathogenesis. The authors found evidence for genetic association between a CFD gene SNP and AMD and a significant increase in plasma CFD concentration in AMD cases compared with controls, consistent with a role for CFD in AMD pathogenesis.

Indexed as

AgedAged, 80 and overCohort StudiesComplement Factor DComplement Pathway, AlternativeFemaleGene DosageGenotypeHumansMacular DegenerationMaleMiddle AgedPolymorphism, Single NucleotideCFD protein, humanComplement Factor D

Identifiers

PMID22003108
PMCPMC3230905
OpenAlexW2097474764

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.