Evidence map›Paper›PMID 26420286›Full record

ArticleBMC medical genetics2015

NPHS2 mutations account for only 15% of nephrotic syndrome cases.

Mara Sanches Guaragna, Anna Cristina G B Lutaif, Cristiane S C Piveta, Marcela L Souza, Suéllen R de Souza, Taciane B Henriques, Andréa T Maciel-Guerra, Vera M S Belangero, Gil Guerra-Junior, Maricilda P De Mello

Open access · goldAbstract read
In one paragraph

Article in BMC medical genetics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 12% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Steroid-Resistant Nephrotic Syndrome due toKidney international reports · 2024
    Article
  6. Article
  7. Article
  8. Congenital nephrotic syndrome.Journal of perinatology : official journal of the California Perinatal Association · 2021
    Review
  9. Association of a NovelIranian journal of public health · 2021
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. BioMed research international · 2017
    Review
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

10 authors at 1 institution in 1 country.

Mara Sanches GuaragnaCentro de Biologia Molecular e Engenharia Genética, Universidade Estadual de Campinas, Campinas, São Paulo, Caixa Postal 6010, Brasil. mara.guaragna@gmail.com.
Anna Cristina G B LutaifNefrologia Pediátrica, Departamento de Pediatria, Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Campinas, São Paulo, Brasil. aclutaif@uol.com.br.
Cristiane S C PivetaCentro de Biologia Molecular e Engenharia Genética, Universidade Estadual de Campinas, Campinas, São Paulo, Caixa Postal 6010, Brasil. cristianepiveta@yahoo.com.br.
Marcela L SouzaCentro de Biologia Molecular e Engenharia Genética, Universidade Estadual de Campinas, Campinas, São Paulo, Caixa Postal 6010, Brasil. malopes.souza@gmail.com.
Suéllen R de SouzaCentro de Biologia Molecular e Engenharia Genética, Universidade Estadual de Campinas, Campinas, São Paulo, Caixa Postal 6010, Brasil. suellen.souza05@gmail.com.
Taciane B HenriquesCentro de Biologia Molecular e Engenharia Genética, Universidade Estadual de Campinas, Campinas, São Paulo, Caixa Postal 6010, Brasil. tacianebh@gmail.com.
Andréa T Maciel-GuerraDepartamento de Genética Médica, Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Campinas, São Paulo, Brasil. atmg@uol.com.br.
Vera M S BelangeroNefrologia Pediátrica, Departamento de Pediatria, Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Campinas, São Paulo, Brasil. vmsbelangero@gmail.com.
Gil Guerra-JuniorCentro de Investigação em Pediatria, Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Campinas, São Paulo, Brasil. gileandrea@uol.com.br.
Maricilda P De MelloCentro de Biologia Molecular e Engenharia Genética, Universidade Estadual de Campinas, Campinas, São Paulo, Caixa Postal 6010, Brasil. mpmello869@gmail.com.
Universidade Estadual de Campinas (UNICAMP) · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundNephrotic syndrome is traditionally classified on the basis of the response to standard steroid treatment. Mutations in more than 24 genes have been associated with nephrotic syndrome in children, although the great majority of steroid-resistant cases have been attributed to mutations in three main genes: NPHS1, NPHS2 and WT1. The aims of this study were to identify mutations in these genes more frequently reported as mutated and to characterize each variation using different in silico prediction algorithms in order to understand their biological functions.

methodsWe performed direct sequence analysis of exons 8 and 9 of WT1, 8 exons of NPHS2 and 29 exons of NPHS1, including NPHS2 and NPHS1 intron-exon boundary sequences, as well as 700 bp of the 5' UTR from both genes in 27 steroid-resistant patients aged between 3 months and 18 years.

resultsAnalysis of the NPHS2 gene revealed four missense mutations, one frameshift mutation and three variations in the 5' UTR. Four patients presented compound heterozygosis, and four other patients presented one heterozygous alteration only. WT1 and NPHS1 gene analysis did not reveal any mutations. DISCUSSION: This is the first study focusing on genetics of SRNS in Brazilian children. Identification of mutations is important because it could influence physicians' decision on patient treatment, as patients carrying mutations can be spared the side effects of immunosuppressive therapy and ultimately could be considered for kidney transplantation from a living donor.

conclusionsAfter molecular analysis of the genes more frequently reported as mutated in 27 steroid-resistant nephrotic syndrome patients, we identified NPHS2 mutations confirming the hereditary character of the kidney disease in only 14.8% of patients. Therefore, the next step is to perform a next generation sequencing based analysis of glomeluropathy-related panel of genes for the remaining patients in order to search for mutations in other genes related to steroid-resistant nephrotic syndrome.

Indexed as

5' Untranslated RegionsAdolescentBase SequenceChildChild, PreschoolComputational BiologyDNA PrimersFrameshift MutationHumansInfantIntracellular Signaling Peptides and ProteinsMembrane ProteinsMolecular Sequence DataMutation, MissenseNephrotic SyndromeSequence Analysis, DNA5' Untranslated RegionsDNA PrimersIntracellular Signaling Peptides and ProteinsMembrane ProteinsnephrinNPHS2 proteinWT1 protein, humanWT1 Proteins

Identifiers

PMID26420286
PMCPMC4589073
OpenAlexW2171819932

What OpenQuestion holds

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LicenceCC BY
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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.