Evidence map›Paper›PMID 34182938›Full record

ArticleBMC neurology2021

Case report of homozygous E200D mutation of PRNP in apparently sporadic Creutzfeldt-Jakob disease.

Ahamad Hassan, Tracy Campbell, Lee Darwent, Hans Odd, Alison Green, John Collinge, Simon Mead

Open access · goldAbstract readCase Reports
In one paragraph

Article in BMC neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
0.5field-weighted citation impact, top 38% 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

5 citing papers in PubMed, 1 synthesis or guideline pooled it, 8 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Prion Mutations in Republic of Republic of Korea, China, and Japan.International journal of molecular sciences · 2022
    Review
  4. Review
  5. 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

7 authors at 4 institutions in 1 country.

Ahamad HassanDepartment of Neurology, Leeds General Infirmary, Leeds, LS1 3EX, UK.
Tracy CampbellMRC Prion Unit at UCL, UCL Institute of Prion Diseases, 33 Cleveland Street, London, W1W 7FF, UK.
Lee DarwentMRC Prion Unit at UCL, UCL Institute of Prion Diseases, 33 Cleveland Street, London, W1W 7FF, UK.
Hans OddNational Prion Clinic, University College London Hospitals NHS Foundation Trust, London, UK.
Alison GreenNational CJD Research & Surveillance Unit, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, EH16 4SB, UK.
John CollingeMRC Prion Unit at UCL, UCL Institute of Prion Diseases, 33 Cleveland Street, London, W1W 7FF, UK.
Simon MeadMRC Prion Unit at UCL, UCL Institute of Prion Diseases, 33 Cleveland Street, London, W1W 7FF, UK. s.mead@prion.ucl.ac.uk.ORCID http://orcid.org/0000-0002-4326-1468
University College London Hospitals NHS Foundation Trust · GBMRC Prion Unit · GBLeeds General Infirmary · GBUniversity of Edinburgh · GB

Funding

Medical Research Council G0400713Medical Research Council MC_UU_00024/1Medical Research Council MC_UU_00024/9Medical Research Council MR/J016071/1
6 · The paper itself

Abstract

backgroundInherited prion diseases are rare autosomal dominant disorders associated with diverse clinical presentations. All are associated with mutation of the gene that encodes prion protein (PRNP). Homozygous mutations with atypical clinical phenotypes have been described but are extremely rare. CASE PRESENTATION: A Chinese patient presented with a rapidly progressive cognitive and motor disorder in the clinical spectrum of sCJD. Investigations strongly suggested a diagnosis of CJD. He was found to carry a homozygous mutation at PRNP codon 200 (E200D), but there was no known family history of the disorder. The estimated allele frequency of E200D in East Asian populations is incompatible with it being a highly penetrant mutation in the heterozygous state.

conclusionIn our view the homozygous PRNP E200D genotype is likely to be causal of CJD in this patient. Homotypic PrP interactions are well known to favour the development of prion disease. The case is compatible with recessively inherited prion disease.

Indexed as

Creutzfeldt-Jakob SyndromeHumansMaleMutationPrion ProteinsPrion ProteinsCJDE200DInherited prion diseasePrionPRNPRecessive

Identifiers

PMID34182938
PMCPMC8237416
OpenAlexW3177280945

What OpenQuestion holds

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LicenceCC BY
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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.