Evidence map›Paper›PMID 34494673›Full record

ArticleJournal of inherited metabolic disease2021

Human and animal fertility studies in cystinosis reveal signs of obstructive azoospermia, an altered blood-testis barrier and a subtherapeutic effect of cysteamine in testis.

Ahmed Reda, Koenraad Veys, Prashant Kadam, Anna Taranta, Laura Rita Rega, Bianca M Goffredo, Chelsea Camps, Martine Besouw, Daniel Cyr, Maarten Albersen and 10 more

Open access · hybridAbstract read
In one paragraph

Article in Journal of inherited metabolic disease, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.9field-weighted citation impact, top 27% 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

8 citing papers in PubMed, 7 citations in OpenAlex.

  1. Article
  2. Long-term outcomes in nephropathic cystinosis: a review.Pediatric nephrology (Berlin, Germany) · 2026
    Review
  3. Article
  4. Review
  5. Review
  6. Article
  7. Review
  8. 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

20 authors at 8 institutions in 4 countries.

Ahmed RedaLaboratory of Pediatric Nephrology, Department of Development and Regeneration, KU Leuven, Leuven, Belgium.
Koenraad VeysLaboratory of Pediatric Nephrology, Department of Development and Regeneration, KU Leuven, Leuven, Belgium.
Prashant KadamBiology of the Testis (BITE) Laboratory, Department of Reproduction, Genetics and Regenerative Medicine, Vrije Universiteit Brussel (VUB), Brussels, Belgium.
Anna TarantaRenal Diseases Research Unit, Genetics and Rare Diseases Research Area, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.
Laura Rita RegaRenal Diseases Research Unit, Genetics and Rare Diseases Research Area, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.
Bianca M GoffredoLaboratory of Pediatric Medicine, Laboratory of Metabolic Diseases, Bambino Gesù Children's Hospital-IRCCS, Rome, Italy.
Chelsea CampsLaboratory of Pediatric Nephrology, Department of Development and Regeneration, KU Leuven, Leuven, Belgium.
Martine BesouwDepartment of Pediatric Nephrology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Daniel CyrLaboratory for Reproductive Toxicology, Institut National de la Recherche Scientifique, Centre Armand-Frappier Santé Biotechnologie, Université du Québec, Quebec, Canada.
Maarten AlbersenDepartment of Urology, University Hospitals Leuven, Leuven, Belgium.
Carl SpiessensFertility Center, Department of Gynaecology, University Hospitals Leuven, Leuven, Belgium.
Liesbeth de WeverDepartment of Radiology, University Hospitals Leuven, Leuven, Belgium.
Robert HamerDepartment of Radiology, Radboud UMC, Nijmegen, Netherlands.
Mirian C H JanssenDepartment of Internal Medicine, Radboud UMC, Nijmegen, Netherlands.
Kathleen D'HauwersDepartment of Internal Medicine, Radboud UMC, Nijmegen, Netherlands.
Alex WetzelsDepartment of Internal Medicine, Radboud UMC, Nijmegen, Netherlands.
Leo MonnensDepartment of Internal Medicine, Radboud UMC, Nijmegen, Netherlands.
Lambertus van den HeuvelLaboratory of Pediatric Nephrology, Department of Development and Regeneration, KU Leuven, Leuven, Belgium.
Ellen GoossensBiology of the Testis (BITE) Laboratory, Department of Reproduction, Genetics and Regenerative Medicine, Vrije Universiteit Brussel (VUB), Brussels, Belgium.
Elena LevtchenkoLaboratory of Pediatric Nephrology, Department of Development and Regeneration, KU Leuven, Leuven, Belgium.ORCID 0000-0002-8352-7312
Radboud University Nijmegen · NLBambino Gesù Children's Hospital · ITKU Leuven · BEVrije Universiteit Brussel · BEUniversitair Ziekenhuis Leuven · BEInstitut National de la Recherche Scientifique · CALeuven Institute for Fertility and Embryology · BEUniversity Medical Center Groningen · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cystinosis is an inherited metabolic disorder caused by autosomal recessive mutations in the CTNS gene leading to lysosomal cystine accumulation. The disease primarily affects the kidneys followed by extra-renal organ involvement later in life. Azoospermia is one of the unclarified complications which are not improved by cysteamine, which is the only available disease-modifying treatment. We aimed at unraveling the origin of azoospermia in cysteamine-treated cystinosis by confirming or excluding an obstructive factor, and investigating the effect of cysteamine on fertility in the Ctns

Indexed as

AdultAnimalsAzoospermiaBlood-Testis BarrierCysteamineCystine Depleting AgentsCystinosisDisease Models, AnimalExtracellular Matrix ProteinsHumansInfertility, MaleMaleMiceMice, Inbred C57BLMiddle AgedNeoplasm ProteinsCysteamineCystine Depleting AgentsExtracellular Matrix ProteinsNeoplasm ProteinsZonula Occludens-1 Proteinazoospermiacysteaminecystinosisepididymal obstructioninfertility

Identifiers

PMID34494673
PMCPMC9291572
OpenAlexW3196656744

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.