Evidence map›Paper›PMID 17339482›Full record

Trial reportJournal of immunology (Baltimore, Md. : 1950)2007

Y402H polymorphism of complement factor H affects binding affinity to C-reactive protein.

Matti Laine, Hanna Jarva, Sanna Seitsonen, Karita Haapasalo, Markus J Lehtinen, Nina Lindeman, Don H Anderson, Patrick T Johnson, Irma Järvelä, T Sakari Jokiranta and 3 more

Open access · bronzeAbstract readClinical TrialComparative StudyRandomized Controlled Trial
In one paragraph

Trial report in Journal of immunology (Baltimore, Md. : 1950), 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 129 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
129citing papers in PubMed, 2 pooled it
9.2field-weighted citation impact, top 2% 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

129 citing papers in PubMed, 2 syntheses or guidelines pooled it, 241 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. Review
  6. Article
  7. Article
  8. Macrophages and Age-Related Macular Degeneration.Advances in experimental medicine and biology · 2025
    Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. The human factor H protein family - an update.Frontiers in immunology · 2024
    Review
  14. Article
  15. Article
  16. Article
  17. Polygenic risk score and biochemical/environmental variables predict a low-risk profile of age-related macular degeneration in Sardinia.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2023
    Article
  18. Article
  19. Review
  20. Article

69 more citing papers are in PubMed but not listed here.

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

13 authors at 3 institutions in 2 countries.

Matti LaineDepartment of Bacteriology and Immunology, Haartman Institute, University of Helsinki, Haartmaninkatu 3, FI-00014 Helsinki, Finland.
Hanna Jarva
Sanna Seitsonen
Karita Haapasalo
Markus J Lehtinen
Nina Lindeman
Don H Anderson
Patrick T Johnson
Irma Järvelä
T Sakari Jokiranta
Gregory S Hageman
Ilkka Immonen
Seppo Meri
University of Helsinki · FIUniversity of California, Santa Barbara · USUniversity of Iowa · US

Funding

Development of Complement Modulating Therapeutics for AMDR24EY017404 · NEI · UNIVERSITY OF UTAH · PI HAGEMAN, GREGORY S · 2006 to 2010
$14.8M
AGE-RELATED MACULOPATHY: CELLULAR AND MOLECULAR ANALYSESR01EY011515 · NEI · UNIVERSITY OF IOWA · PI HAGEMAN, GREGORY S · 1996 to 2005
$3.2M
NEI NIH HHS EY 11515NEI NIH HHS R01 EY011515NEI NIH HHS R24 EY017404
6 · The paper itself

Abstract

Complement factor H (FH) is an important regulator of the alternative complement pathway. The Y402H polymorphism within the seventh short consensus repeat of FH was recently shown to be associated with age-related macular degeneration, the most common cause of irreversible blindness in the Western world. We examined the effects of this polymorphism on various FH functions. FH purified from sera of age-related macular degeneration patients homozygous for the FH(402H) variant showed a significantly reduced binding to C-reactive protein (CRP), an acute phase protein, as compared with FH derived from unaffected controls homozygous for the FH(402Y) variant. Strongly reduced binding to CRP was also observed with a recombinant fragment of FH (short consensus repeat 5-7) containing the same amino acid change. Because the interaction of CRP and FH promotes complement-mediated clearance of cellular debris in a noninflammatory fashion, we propose that the reduced binding of FH(402H) to CRP could lead to an impaired targeting of FH to cellular debris and a reduction in debris clearance and enhanced inflammation along the macular retinal pigmented epithelium-choroid interface in individuals with age-related macular degeneration.

Indexed as

Polymorphism, GeneticAgedAged, 80 and overComplement Factor HC-Reactive ProteinFemaleHomozygoteHumansInflammationMacular DegenerationMaleMiddle AgedPigment Epithelium of EyeProtein BindingRetinaComplement Factor HC-Reactive Protein

Identifiers

PMID17339482
PMCPMC4853917
OpenAlexW2151652430

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.