Evidence map›Paper›PMID 26500098›Full record

ArticleClinical and experimental nephrology2016

Functional analysis of novel allelic variants in URAT1 and GLUT9 causing renal hypouricemia type 1 and 2.

Andrea Mancikova, Vladimir Krylov, Olha Hurba, Ivan Sebesta, Makiko Nakamura, Kimiyoshi Ichida, Blanka Stiburkova

Abstract readCase Reports
PubMed Publisher
In one paragraph

Article in Clinical and experimental nephrology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing 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

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 55 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Review
  5. Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Review
  14. Review
  15. Article
  16. Article
  17. Urate transport in health and disease.Best practice & research. Clinical rheumatology · 2021
    Review
  18. Article
  19. Article
  20. Urate Transporters in the Kidney: What Clinicians Need to Know.Electrolyte & blood pressure : E & BP · 2021
    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

7 authors at 5 institutions in 2 countries.

Andrea MancikovaDepartment of Cell Biology, Faculty of Science, Charles University in Prague, Prague, Czech Republic.
Vladimir KrylovDepartment of Cell Biology, Faculty of Science, Charles University in Prague, Prague, Czech Republic.
Olha HurbaInstitute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic.
Ivan SebestaInstitute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic.
Makiko NakamuraDepartment of Pathophysiology, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan.
Kimiyoshi IchidaDepartment of Pathophysiology, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan.
Blanka StiburkovaInstitute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic. stiburkova@revma.cz.
Charles University · CZGeneral University Hospital in Prague · CZInstitute of Rheumatology · CZJikei University School of Medicine · JPTokyo University of Pharmacy and Life Sciences · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundRenal hypouricemia is a rare heterogeneous inherited disorder characterized by impaired tubular uric acid transport with severe complications, such as acute kidney injury and nephrolithiasis. Type 1 is caused by a loss-of-function mutation in the SLC22A12 gene (URAT1), while type 2 is caused by defects in the SLC2A9 gene (GLUT9). METHODS AND

resultsIn this article we present clinical, biochemical and molecular genetics of two Czech patients. The serum uric acid in the probands was 57 and 98 µmol/l and expressed as an increase in the fractional excretion of uric acid (40 and 18 %). The sequencing analysis of SLC22A12 and SLC2A9 revealed novel variants p.R92C and p.R203C in URAT1 and p.G72D in GLUT9. Functional studies were performed for these novel variants and for previously reported variants p.I118HfsX27, p.G216R and p.N333S in GLUT9 responsible for renal hypouricemia in three probands from Czech Republic and United Kingdom. Functional studies showed significantly decreased urate uptake for all variants. However, urate uptake of GLUT9 variants prepared for both isoforms were not significantly different.

conclusionsThis is the first complex function characterization of non-synonymous allelic variants in patients with renal hypouricemia regarding both GLUT9 isoforms. Our finding of defects in the SLC2A9 and SLC22A12 genes show the following: renal hypouricemia is not restricted to East Asia populations; urate uptake of GLUT9 variants prepared for both isoforms were not significantly different; renal hypouricemia type 2 has more wide clinical variability than type 1; the phenotypic severity of renal hypouricemia is not correlated with results of functional characterizations of URAT1 and GLUT9 variants.

Indexed as

AdolescentAnimalsChildDNA Mutational AnalysisFemaleGlucose Transport Proteins, FacilitativeHumansMiddle AgedOrganic Anion TransportersOrganic Cation Transport ProteinsRenal Tubular Transport, Inborn ErrorsUrinary CalculiXenopusGlucose Transport Proteins, FacilitativeOrganic Anion TransportersOrganic Cation Transport ProteinsSLC22A12 protein, humanSLC2A9 protein, humanGLUT9Renal hypouricemiaSLC22A12SLC2A9URAT1Uric acid transporters

Identifiers

PMID26500098
OpenAlexW1809027901

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.