Evidence map›Paper›PMID 33585978›Full record

ArticlePediatric nephrology (Berlin, Germany)2021

APOL1 in an ethnically diverse pediatric population with nephrotic syndrome: implications in focal segmental glomerulosclerosis and other diagnoses.

Andreia Watanabe, Mara Sanches Guaragna, Vera Maria Santoro Belangero, Fernanda Maria Serafim Casimiro, João Bosco Pesquero, Luciana de Santis Feltran, Lilian Monteiro Pereira Palma, Patrícia Varela, Precil Diego Miranda de Menezes Neves, Antonio Marcondes Lerario and 7 more

Abstract readMulticenter Study
PubMed Publisher
In one paragraph

Article in Pediatric nephrology (Berlin, Germany), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 15% 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

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

  1. Guideline
  2. Update on APOL1 and chronic kidney diseases in children.Pediatric nephrology (Berlin, Germany) · 2026
    Review
  3. Review
  4. Article
  5. KDOQI US Commentary on the KDIGO 2025 Clinical Practice Guideline for the Management of Nephrotic Syndrome in Children.American journal of kidney diseases : the official journal of the National Kidney Foundation · 2026
    Review
  6. Article
  7. Article
  8. Review
  9. Review
  10. Review
  11. Article
  12. Review
  13. Article
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

17 authors at 5 institutions in 2 countries.

Andreia Watanabe *Department of Pediatrics, University of São Paulo School of Medicine, São Paulo, Brazil.ORCID https://orcid.org/0000-0002-8053-2968
Mara Sanches Guaragna *Center for Molecular Biology and Genetic Engineering, State University of Campinas, Campinas, Brazil.ORCID https://orcid.org/0000-0002-6508-8571
Vera Maria Santoro BelangeroDepartment of Pediatrics, State University of Campinas, Campinas, Brazil. vmsbelangero@gmail.com.
Fernanda Maria Serafim CasimiroCenter for Diagnosis and Research on Genetic Diseases, Department of Biophysics, Federal University of São Paulo School of Medicine, São Paulo, Brazil.ORCID https://orcid.org/0000-0002-2249-1109
João Bosco PesqueroCenter for Diagnosis and Research on Genetic Diseases, Department of Biophysics, Federal University of São Paulo School of Medicine, São Paulo, Brazil.ORCID https://orcid.org/0000-0002-4507-632X
Luciana de Santis FeltranDepartment of Nephrology, Federal University of São Paulo School of Medicine, São Paulo, Brazil.ORCID https://orcid.org/0000-0003-3339-0749
Lilian Monteiro Pereira PalmaDepartment of Pediatrics, State University of Campinas, Campinas, Brazil.ORCID https://orcid.org/0000-0002-0334-8470
Patrícia VarelaCenter for Diagnosis and Research on Genetic Diseases, Department of Biophysics, Federal University of São Paulo School of Medicine, São Paulo, Brazil.ORCID https://orcid.org/0000-0002-2165-0761
Precil Diego Miranda de Menezes NevesDivision of Molecular Medicine, University of São Paulo School of Medicine, São Paulo, Brazil.ORCID https://orcid.org/0000-0003-1089-6763
Antonio Marcondes LerarioDivision of Endocrinology, University of Michigan, Ann Arbor, MI, USA.ORCID https://orcid.org/0000-0002-8336-6432
Marcela Lopes de SouzaCenter for Molecular Biology and Genetic Engineering, State University of Campinas, Campinas, Brazil.ORCID https://orcid.org/0000-0002-6055-0683
Maricilda Palandi de MelloCenter for Molecular Biology and Genetic Engineering, State University of Campinas, Campinas, Brazil.ORCID https://orcid.org/0000-0003-0521-9100
Anna Cristina Gervásio de Brito LutaifDepartment of Pediatrics, State University of Campinas, Campinas, Brazil.ORCID https://orcid.org/0000-0003-1601-4389
Cassio Rodrigues FerrariDepartment of Pediatrics, State University of Campinas, Campinas, Brazil.
Matthew Gordon SampsonDivision of Pediatric Nephrology, Boston Children's Hospital, Boston, MA, USA.ORCID https://orcid.org/0000-0001-9560-076X
Luiz Fernando OnuchicDivision of Molecular Medicine, University of São Paulo School of Medicine, São Paulo, Brazil. lonuchic@usp.br.ORCID https://orcid.org/0000-0002-4053-5419
Paulo Cesar Koch NogueiraDepartment of Pediatrics, Federal University of São Paulo School of Medicine, São Paulo, Brazil. pckoch@uol.com.br.ORCID https://orcid.org/0000-0002-9536-9665
Universidade Estadual de Campinas (UNICAMP) · BRUniversidade Federal de São Paulo · BRUniversidade de São Paulo · BRBroad Institute · USUniversity of Michigan · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAPOL1 high-risk genotypes (HRG) are associated with increased risk of kidney disease in individuals of African ancestry. We analyzed the effects of APOL1 risk variants on an ethnically diverse Brazilian pediatric nephrotic syndrome (NS) cohort.

methodsMulticenter study including 318 NS patients, categorized as progressors to advanced CKD [estimated glomerular filtration rate (eGFR)] < 30 mL/min/1.73 m

resultsNineteen patients (6%) had an HRG. Of these, 47% were self-reported White. Patients with HRG manifested NS at older ages and presented higher frequencies of FSGS and SRNS. HRG patients progressed to advanced CKD more often than low-risk-genotype (LRG) children in the whole NS cohort (p = 0.001) and the three subgroups. In SRNS and biopsied patients, a single risk variant was associated with trends of higher CKD progression risk.

conclusionsNovel discoveries include a substantial prevalence of HRG among patients self-reported White, worse kidney outcomes in HRG versus LRG children in the FSGS subgroup, and a trend of higher CKD progression risk associated with a single risk variant in the SRNS cohort. These findings suggest APOL1-associated NS extends beyond patients self-reported non-White, the HRG effect is independent of FSGS, and a single risk variant may have a detrimental impact in children with NS.

Indexed as

Glomerulosclerosis, Focal SegmentalNephrotic SyndromeRenal Insufficiency, ChronicApolipoprotein L1ChildErbB ReceptorsHumansAPOL1 protein, humanApolipoprotein L1ErbB ReceptorsAPOL1Brazilian admixture raceChildrenFocal segmental glomerulosclerosisNephrotic syndromeRisk alleles

Identifiers

PMID33585978
OpenAlexW3132540450

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.