Evidence map›Paper›PMID 32203581›Full record

ArticleBrain : a journal of neurology2020

Long-term post-mortem studies following neurturin gene therapy in patients with advanced Parkinson's disease.

Yaping Chu, Raymond T Bartus, Fredric P Manfredsson, C Warren Olanow, Jeffrey H Kordower

Open access · hybridAbstract readCase Reports
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 44 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 1 pooled it
4.7field-weighted citation impact, top 4% 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

44 citing papers in PubMed, 1 synthesis or guideline pooled it, 85 citations in OpenAlex.

  1. Pooled it
  2. A Phase 1 Study of Convection-Enhanced Delivery of Intraputaminal AAV2-GDNF in Advanced Parkinson's Disease.Movement disorders : official journal of the Movement Disorder Society · 2026
    Article
  3. Focused Ultrasound for the Treatment of Circuit and Molecular Pathology in Parkinson's Disease.Movement disorders : official journal of the Movement Disorder Society · 2026
    Review
  4. Article
  5. Article
  6. Review
  7. Review
  8. Review
  9. Common AAV gene therapy vectors show nonselective transduction ofMolecular therapy. Methods & clinical development · 2025
    Article
  10. Recent developments in gene therapy for Parkinson's disease.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Review
  11. Review
  12. Article
  13. Review
  14. Review
  15. Persistent GDNF Expression 45 Months after Putaminal Infusion of AAV2-GDNF in a Patient with Parkinson's Disease.Movement disorders : official journal of the Movement Disorder Society · 2024
    Article
  16. Neurosurgical gene therapy for central nervous system diseases.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2024
    Review
  17. Article
  18. Review
  19. Gene Therapy for Dopamine Dyshomeostasis: From Parkinson's to Primary Neurotransmitter Diseases.Movement disorders : official journal of the Movement Disorder Society · 2023
    Review
  20. 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

5 authors at 3 institutions in 1 country.

Yaping ChuDepartment of Neurological Sciences, Rush University Medical Center, Chicago, Illinois 60612, USA.
Raymond T BartusRTBioconsultants, Inc, San Diego, CA 92130, USA.
Fredric P ManfredssonParkinson's Disease Research Unit, Department of Neurobiology, Barrow Neurological Institute, Phoenix, Arizona 85013, USA.
C Warren OlanowDepartments of Neurology and Neuroscience, Mount Sinai School of Medicine, New York, NY, USA.
Jeffrey H KordowerDepartment of Neurological Sciences, Rush University Medical Center, Chicago, Illinois 60612, USA.
Rush University Medical Center · USBarrow Neurological Institute · USIcahn School of Medicine at Mount Sinai · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We performed post-mortem studies on two patients with advanced Parkinson's disease 8 and10 years following AAV2-neurturin (CERE120) gene therapy, the longest post-mortem trophic factor gene therapy cases reported to date. CERE120 was delivered to the putamen bilaterally in one case (10 years post-surgery), and to the putamen plus the substantia nigra bilaterally in the second (8 years post-surgery). In both patients there was persistent, albeit limited, neurturin expression in the putamen covering ∼3-12% of the putamen. In the putamen, dense staining of tyrosine hydroxylase-positive fibres was observed in areas that contained detectable neurturin expression. In the substantia nigra, neurturin expression was detected in 9.8-18.95% and 22.02-39% of remaining melanin-containing neurons in the patient with putamenal and combined putamenal and nigral gene delivery, respectively. Melanized neurons displayed intense tyrosine hydroxylase and RET proto-oncogene expression in nigral neurons in the patient where CERE120 was directly delivered to the nigra. There was no difference in the degree of Lewy pathology in comparison to untreated control patients with Parkinson's disease, and α-synuclein aggregates were detected in neurons that also stained for neurturin, RET, and tyrosine hydroxylase. These changes were not associated with antiparkinsonian benefits likely due to the limited neurturin expression. This study provides the longest term evidence of persistent transgene expression following gene delivery to the CNS and the first human results when targeting both the terminal fields in the putamen as well as the originating nigral neurons.

Indexed as

Genetic TherapyAgedAged, 80 and overalpha-SynucleinCase-Control StudiesHumansLewy BodiesMelaninsMiddle AgedNeuronsNeurturinParkinson DiseaseProto-Oncogene MasProto-Oncogene Proteins c-retPutamenSubstantia Nigraalpha-SynucleinMAS1 protein, humanMelaninsNeurturinNRTN protein, humanProto-Oncogene MasProto-Oncogene Proteins c-retRET protein, humanTyrosine 3-Monooxygenasedopaminergic neurongene therapyneuroprotectionneurturinParkinson’s disease

Identifiers

PMID32203581
PMCPMC7089653
OpenAlexW3012801913

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.