Evidence map›Paper›PMID 26809805›Full record

ArticlePediatric nephrology (Berlin, Germany)2016

Identification of 47 novel mutations in patients with Alport syndrome and thin basement membrane nephropathy.

Stefanie Weber, Katja Strasser, Sabine Rath, Achim Kittke, Sonja Beicht, Martin Alberer, Bärbel Lange-Sperandio, Peter F Hoyer, Marcus R Benz, Sabine Ponsel and 3 more

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In one paragraph

Article in Pediatric nephrology (Berlin, Germany), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 1 pooled it
2.4field-weighted citation impact, top 13% 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

32 citing papers in PubMed, 1 synthesis or guideline pooled it, 46 citations in OpenAlex.

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  6. Lithuanian Study onInternational journal of molecular sciences · 2025
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  11. Genetic diagnosis of Alport syndrome in 16 Chinese families.Molecular genetics & genomic medicine · 2024
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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

13 authors at 5 institutions in 1 country.

Stefanie WeberPediatric Nephrology, Pediatrics II, University of Duisburg-Essen, Essen, Germany.
Katja StrasserPediatric Nephrology, Pediatrics II, University of Duisburg-Essen, Essen, Germany.
Sabine RathCenter for Human Genetics and Laboratory Diagnostics Dr. Klein, Dr. Rost and Colleagues, Martinsried, Germany.
Achim KittkeCenter for Human Genetics and Laboratory Diagnostics Dr. Klein, Dr. Rost and Colleagues, Martinsried, Germany.
Sonja BeichtCenter for Human Genetics and Laboratory Diagnostics Dr. Klein, Dr. Rost and Colleagues, Martinsried, Germany.
Martin AlbererDepartment of Infectious Diseases and Tropical Medicine, Ludwig-Maximilians University, Munich, Germany.
Bärbel Lange-SperandioPediatric Nephrology, University Children's Hospital, Ludwig-Maximilians University, Munich, Germany.
Peter F HoyerPediatric Nephrology, Pediatrics II, University of Duisburg-Essen, Essen, Germany.
Marcus R BenzPediatric Nephrology, University Children's Hospital, Cologne, Germany.
Sabine PonselPediatric Nephrology, University Children's Hospital, Ludwig-Maximilians University, Munich, Germany.
Lutz T WeberPediatric Nephrology, University Children's Hospital, Cologne, Germany.
Hanns-Georg KleinCenter for Human Genetics and Laboratory Diagnostics Dr. Klein, Dr. Rost and Colleagues, Martinsried, Germany.
Julia HoefeleCenter for Human Genetics and Laboratory Diagnostics Dr. Klein, Dr. Rost and Colleagues, Martinsried, Germany. julia.hoefele@tum.de.
CS Diagnostics · DELudwig-Maximilians-Universität München · DEUniversity of Duisburg-Essen · DEUniversity Hospital Cologne · DETechnical University of Munich · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAlport syndrome (ATS) is a progressive hereditary nephropathy characterized by hematuria and proteinuria. It can be associated with extrarenal manifestations. In contrast, thin basement membrane nephropathy (TBMN) is characterized by microscopic hematuria, is largely asymptomatic, and is rarely associated with proteinuria and end-stage renal disease. Mutations have been identified in the COL4A5 gene in ATS and in the COL4A3 and COL4A4 genes in ATS and TBMN. To date, more than 1000 different mutations in COL4A5, COL4A3, and COL4A4 are known.

methodsIn this study mutational analysis by exon sequencing and multiplex ligation-dependent probe amplification was performed in a large European cohort of families with ATS and TBMN.

resultsMolecular diagnostic testing of 216 individuals led to the detection of 47 novel mutations, thereby expanding the spectrum of known mutations causing ATS and TBMN by up to 10 and 6%, respectively, depending on the database. Remarkably, a high number of ATS patients with only single mutations in COL4A3 and COL4A4 were identified. Additionally, three ATS patients presented with synonymous sequence variants that possible affect correct mRNA splicing, as suggested by in silico analysis.

conclusionsThe results of this study clearly broaden the genotypic spectrum of known mutations for ATS and TBMN, which will in turn now facilitate future studies into genotype-phenotype correlations. Further studies should also examine the significance of single heterozygous mutations in COL4A3 and COL4A4 and of synonymous sequence variants associated with ATS.

Indexed as

AdolescentAdultAgedAutoantigensChildChild, PreschoolCohort StudiesCollagen Type IVDNA Mutational AnalysisExonsFemaleGenetic Association StudiesHematuriaHeterozygoteHumansInfantAutoantigensCOL4A4 protein, humanCOL4A5 protein, humanCollagen Type IVtype IV collagen alpha3 chainAlport syndromeCOL4A3COL4A4COL4A5Mutational analysisThin basement membrane nephropathy

Identifiers

PMID26809805
OpenAlexW2259779968

What OpenQuestion holds

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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.