Evidence map›Paper›PMID 28673452›Full record

ArticleKidney international2017

Circulating complement factor H-related proteins 1 and 5 correlate with disease activity in IgA nephropathy.

Nicholas R Medjeral-Thomas, Hannah J Lomax-Browne, Hannah Beckwith, Michelle Willicombe, Adam G McLean, Paul Brookes, Charles D Pusey, Mario Falchi, H Terence Cook, Matthew C Pickering

Open access · hybridAbstract read
In one paragraph

Article in Kidney international, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 82 papers.

0numbers the graph read from it
0cells of the map it votes in
82citing papers in PubMed
7.6field-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

82 citing papers in PubMed, 141 citations in OpenAlex.

  1. Article
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  7. Association of Complement Genetics with Outcomes in IgA Nephropathy.Clinical journal of the American Society of Nephrology : CJASN · 2026
    Article
  8. Review
  9. Article
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  11. Article
  12. Review
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  15. Article
  16. Review
  17. Article
  18. Article
  19. Complement System Inhibitors in Nephrology: An Update-Narrative Review.International journal of molecular sciences · 2025
    Review
  20. Review

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 4 institutions in 1 country.

Nicholas R Medjeral-ThomasCentre for Complement and Inflammation Research, Imperial College London, UK.
Hannah J Lomax-BrowneCentre for Complement and Inflammation Research, Imperial College London, UK.
Hannah BeckwithCentre for Complement and Inflammation Research, Imperial College London, UK.
Michelle WillicombeRenal and Transplant Centre, Imperial College Healthcare NHS Trust, London, UK.
Adam G McLeanRenal and Transplant Centre, Imperial College Healthcare NHS Trust, London, UK.
Paul BrookesHistocompatibility & Immunogenetics, Imperial College Healthcare NHS Trust, London, UK.
Charles D PuseyRenal and Vascular Inflammation Section, Imperial College London, UK.
Mario FalchiDepartment of Twin Research and Genetic Epidemiology, King's College London, UK.
H Terence CookCentre for Complement and Inflammation Research, Imperial College London, UK.
Matthew C PickeringCentre for Complement and Inflammation Research, Imperial College London, UK. Electronic address: matthew.pickering@imperial.ac.uk.
Centre for Inflammation Research · GBImperial College Healthcare NHS Trust · GBImperial College London · GBKing's College London · GB

Funding

Medical Research Council MR/K01353X/1Medical Research Council MR/K01353X/2Wellcome Trust
6 · The paper itself

Abstract

IgA nephropathy (IgAN) is a common cause of chronic kidney disease and end-stage renal failure, especially in young people. Due to a wide range of clinical outcomes and difficulty in predicting response to immunosuppression, we need to understand why and identify which patients with IgAN will develop progressive renal impairment. A deletion polymorphism affecting the genes encoding the complement factor H-related protein (FHR)-1 and FHR-3 is robustly associated with protection against IgAN. Some FHR proteins, including FHR-1 and FHR-5, antagonize the ability of complement factor H (fH), the major negative regulator of the complement alternative pathway, to inhibit complement activation on surfaces, a process termed fH deregulation. From a large cohort of patients, we demonstrated that plasma FHR-1 and the FHR-1/fH ratio were elevated in IgAN and associated with progressive disease. Plasma FHR-1 negatively correlated with eGFR but remained elevated in patients with IgAN with normal eGFR. Serum FHR5 was slightly elevated in IgAN but did not correlate with eGFR. Neither FHR5 levels nor the FHR-5/fH ratio was associated with progressive disease. However, higher serum FHR-5 levels were associated with a lack of response to immunosuppression, the presence of endocapillary hypercellularity, and histology scores of disease severity (the Oxford Classification MEST score). Thus, FHR-1 and FHR-5 have a role in IgAN disease progression.

Indexed as

AdultAgedAged, 80 and overBiomarkersComplement C3b Inactivator ProteinsComplement Pathway, AlternativeComplement System ProteinsDisease ProgressionFemaleGlomerular Filtration RateGlomerulonephritis, IGAHumansImmunosuppressive AgentsKidneyMaleMiddle AgedBiomarkersCFHR1 protein, humanCFHR5 protein, humanComplement C3b Inactivator ProteinsComplement System ProteinsImmunosuppressive Agentscomplementglomerular diseaseIgA nephropathy

Identifiers

PMID28673452
PMCPMC5611987
OpenAlexW2727919476

What OpenQuestion holds

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LicenceCC BY
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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.