Evidence map›Paper›PMID 35498891›Full record

ArticleClinical kidney journal2022

C5a receptor inhibitor avacopan in immunoglobulin A nephropathy-an open-label pilot study.

Annette Bruchfeld, Hasan Magin, Patrick Nachman, Samir Parikh, Richard Lafayette, Antonia Potarca, Shichang Miao, Pirow Bekker

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Clinical kidney journal, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 2 pooled it
7.9field-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

52 citing papers in PubMed, 2 syntheses or guidelines pooled it, 86 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

8 authors at 6 institutions in 2 countries.

Annette BruchfeldDepartment of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden.ORCID https://orcid.org/0000-0002-9752-9941
Hasan MaginDepartment of Renal Medicine, Karolinska University Hospital and CLINTEC Karolinska Institutet, Stockholm, Sweden.
Patrick NachmanDivision of Renal Diseases and Hypertension, Minneapolis, University of Minnesota, Minneapolis, MN, USA.
Samir ParikhDepartment of Nephrology, Ohio State University Wexner Medical Center, Columbus, OH, USA.
Richard LafayetteDepartment of Nephrology, Stanford University, Palo Alto, CA, USA.
Antonia PotarcaChemoCentryx, San Carlos, CA, USA.
Shichang MiaoChemoCentryx, San Carlos, CA, USA.
Pirow BekkerChemoCentryx, San Carlos, CA, USA.
ChemoCentryx (United States) · USKarolinska University Hospital · SELinköping University · SEStanford University · USThe Ohio State University Wexner Medical Center · USUniversity of Minnesota · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Improvement of proteinuria as a marker for disease activity is associated with a better renal outcome in immunoglobulin A nephropathy (IgAN). Complement is an effector pathway in IgA-mediated kidney injury. Avacopan, a selective C5a receptor inhibitor, has previously shown efficacy in anti-neutrophil cytoplasmic antibody-associated vasculitis. The aim of this study was to evaluate the safety and efficacy of avacopan in patients with IgAN with persistent proteinuria despite a maximally tolerated dose of renin-angiotensin-aldosterone system blockade. The efficacy evaluation was based on the change in proteinuria. Methods: This open-label pilot trial enrolled adult patients with biopsy-proven IgAN, urinary protein:creatinine ratio (UPCR) >1 g/g creatinine and an estimated glomerular filtration rate (eGFR) >60 mL/min/1.73 m Results: A total of 10 of 15 screened patients entered the run-in period. Seven patients with a UPCR >1 g/g creatinine received avacopan. Six of seven patients had numerical improvement in the UPCR during the avacopan treatment period, three of whom had a numerical improvement of ∼50% at week 12. At week 24, five of seven patients still showed numerical improvement in the UPCR compared with baseline. The urinary monocyte chemoattractant protein-1:creatinine ratio decreased numerically 30% by week 8, possibly reflecting the anti-inflammatory activity of avacopan. Avacopan was well tolerated. There was one serious adverse event of unstable angina, which was deemed to be unrelated to avacopan. Conclusions: This short-term pilot study showed an improvement in the slope of the UPCR, with ∼50% improvement in three of seven patients with IgAN. Longer avacopan treatment duration may be indicated for maximal benefit.

Indexed as

avacopanC5a receptorC5a receptor inhibitorcomplementIgA nephropathyproteinuria

Identifiers

PMID35498891
PMCPMC9050557
OpenAlexW4206416282

What OpenQuestion holds

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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.