Evidence map›Paper›PMID 32201884›Full record

ArticleBrain : a journal of neurology2020

Variants in saposin D domain of prosaposin gene linked to Parkinson's disease.

Yutaka Oji, Taku Hatano, Shin-Ichi Ueno, Manabu Funayama, Kei-Ichi Ishikawa, Ayami Okuzumi, Sachiko Noda, Shigeto Sato, Wataru Satake, Tatsushi Toda and 22 more

Abstract read
PubMed Publisher
In one paragraph

Article in Brain : a journal of neurology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

52 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Species-dependent activities of the PINK1-parkin axis.Translational neurodegeneration · 2026
    Review
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Prosaposin in CNS health and disease, metabolic stress and exercise adaptation.Journal of molecular medicine (Berlin, Germany) · 2026
    Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Review
  18. Parkinson's Disease: Biomarkers for Diagnosis and Disease Progression.International journal of molecular sciences · 2024
    Review
  19. Article
  20. International journal of molecular sciences · 2024
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

32 authors.

Yutaka OjiDepartment of Neurology, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Taku HatanoDepartment of Neurology, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Shin-Ichi UenoDepartment of Neurology, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Manabu FunayamaResearch Institute for Diseases of Old Age, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Kei-Ichi IshikawaDepartment of Neurology, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Ayami OkuzumiDepartment of Neurology, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Sachiko NodaDepartment of Neurology, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Shigeto SatoDepartment of Neurology, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Wataru SatakeDepartment of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Tatsushi TodaDepartment of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Yuanzhe LiDepartment of Neurology, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Tomoko Hino-TakaiDepartment of Pathophysiology and Metabolism, Kawasaki Medical School, Okayama, Japan.
Soichiro KakutaLaboratory of Morphology and Image Analysis, Research Support Center, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Taiji TsunemiDepartment of Neurology, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Hiroyo YoshinoResearch Institute for Diseases of Old Age, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Kenya NishiokaDepartment of Neurology, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Tatsuya HattoriDepartment of Neurology, Hommachi Neurological Clinic, Nagoya, Japan.
Yasuaki MizutaniDepartment of Neurology, Fujita Health University School of Medicine, Aichi, Japan.
Tatsuro MutohDepartment of Neurology, Fujita Health University School of Medicine, Aichi, Japan.
Fusako YokochiDepartment of Neurology, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan.
Yuta IchinoseDepartment of Neurology, Graduate School of Medical Sciences, University of Yamanashi, Yamanashi, Japan.
Kishin KohDepartment of Neurology, Graduate School of Medical Sciences, University of Yamanashi, Yamanashi, Japan.
Kazumasa ShindoDepartment of Neurology, Graduate School of Medical Sciences, University of Yamanashi, Yamanashi, Japan.
Yoshihisa TakiyamaDepartment of Neurology, Graduate School of Medical Sciences, University of Yamanashi, Yamanashi, Japan.
Tsuyoshi HamaguchiDepartment of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.
Masahito YamadaDepartment of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.
Matthew J FarrerDepartment of Medical Genetics, University of British Columbia, Vancouver, Canada.
Yasuo UchiyamaDepartment of Cellular and Molecular Neuropathology, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Wado AkamatsuCenter for Genomic and Regenerative Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Yih-Ru WuDepartment of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan.
Junko MatsudaDepartment of Pathophysiology and Metabolism, Kawasaki Medical School, Okayama, Japan.
Nobutaka HattoriDepartment of Neurology, Juntendo University Graduate School of Medicine, Tokyo, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Recently, the genetic variability in lysosomal storage disorders has been implicated in the pathogenesis of Parkinson's disease. Here, we found that variants in prosaposin (PSAP), a rare causative gene of various types of lysosomal storage disorders, are linked to Parkinson's disease. Genetic mutation screening revealed three pathogenic mutations in the saposin D domain of PSAP from three families with autosomal dominant Parkinson's disease. Whole-exome sequencing revealed no other variants in previously identified Parkinson's disease-causing or lysosomal storage disorder-causing genes. A case-control association study found two variants in the intronic regions of the PSAP saposin D domain (rs4747203 and rs885828) in sporadic Parkinson's disease had significantly higher allele frequencies in a combined cohort of Japan and Taiwan. We found the abnormal accumulation of autophagic vacuoles, impaired autophagic flux, altered intracellular localization of prosaposin, and an aggregation of α-synuclein in patient-derived skin fibroblasts or induced pluripotent stem cell-derived dopaminergic neurons. In mice, a Psap saposin D mutation caused progressive motor decline and dopaminergic neurodegeneration. Our data provide novel genetic evidence for the involvement of the PSAP saposin D domain in Parkinson's disease.

Indexed as

AgedAnimalsCase-Control StudiesDopaminergic NeuronsFemaleGenetic Predisposition to DiseaseHumansMaleMiceMice, Mutant StrainsMiddle AgedNerve DegenerationParkinson DiseaseSaposinsPSAP protein, humanPsap protein, mouseSaposinslysosomal storage disorderParkinson’s diseaseprosaposinsaposin Dα-synuclein

Identifiers

PMID32201884

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.