Evidence map›Paper›PMID 30637984›Full record

ArticleMolecular genetics & genomic medicine2019

Evaluation of the detection of GBA missense mutations and other variants using the Oxford Nanopore MinION.

Melissa Leija-Salazar, Fritz J Sedlazeck, Marco Toffoli, Stephen Mullin, Katya Mokretar, Maria Athanasopoulou, Aimee Donald, Reena Sharma, Derralynn Hughes, Anthony H V Schapira and 1 more

Open access · goldAbstract readEvaluation Study
In one paragraph

Article in Molecular genetics & genomic medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
53citing papers in PubMed, 1 pooled it
7.3field-weighted citation impact, top 2% 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

53 citing papers in PubMed, 1 synthesis or guideline pooled it, 93 citations in OpenAlex.

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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

11 authors at 5 institutions in 2 countries.

Melissa Leija-SalazarDepartment of Clinical and Movement Neurosciences, Royal Free Campus, Institute of Neurology, University College London, London, UK.
Fritz J SedlazeckHuman Genome Sequencing Center, Baylor College of Medicine, Houston, Texas.
Marco ToffoliDepartment of Clinical and Movement Neurosciences, Royal Free Campus, Institute of Neurology, University College London, London, UK.
Stephen MullinDepartment of Clinical and Movement Neurosciences, Royal Free Campus, Institute of Neurology, University College London, London, UK.
Katya MokretarDepartment of Clinical and Movement Neurosciences, Royal Free Campus, Institute of Neurology, University College London, London, UK.
Maria AthanasopoulouDepartment of Molecular Neuroscience, Institute of Neurology, University College London, London, UK.
Aimee DonaldDepartment of Paediatrics, Royal Manchester Children's Hospital, Manchester, UK.
Reena SharmaThe Mark Holland Metabolic Unit, Salford Royal Foundation NHS Trust, Salford, UK.
Derralynn HughesInstitute of Immunity and Transplantation, Lysosomal Storage Disorders Unit, Royal Free Hospital, London, UK.
Anthony H V SchapiraDepartment of Clinical and Movement Neurosciences, Royal Free Campus, Institute of Neurology, University College London, London, UK.
Christos ProukakisDepartment of Clinical and Movement Neurosciences, Royal Free Campus, Institute of Neurology, University College London, London, UK.ORCID 0000-0001-6423-6539
The Royal Free Hospital · GBBaylor College of Medicine · USRoyal Manchester Children's Hospital · GBSalford Royal NHS Foundation Trust · GBUniversity College London · GB

Funding

Genomic Architecture of Common Disease in Diverse Populations: WGS of Ongoing Hemorrhagic Stroke Study SupplementUM1HG008898 · NHGRI · BAYLOR COLLEGE OF MEDICINE · PI GIBBS, RICHARD A · 2016 to 2020
$77.0M
NHGRI NIH HHS UM1 HG008898
6 · The paper itself

Abstract

backgroundMutations in GBA cause Gaucher disease when biallelic and are strong risk factors for Parkinson's disease when heterozygous. GBA analysis is complicated by the nearby pseudogene. We aimed to design and validate a method for sequencing GBA using long reads.

methodsWe sequenced GBA on the Oxford Nanopore MinION as an 8.9 kb amplicon from 102 individuals, including patients with Parkinson's and Gaucher diseases. We used NanoOK for quality metrics, NGMLR to align data (after comparing with GraphMap), Nanopolish and Sniffles to call variants, and WhatsHap for phasing.

resultsWe detected all known missense mutations in these samples, including the common p.N409S (N370S) and p.L483P (L444P) in multiple samples, and nine rarer ones, as well as a splicing and a truncating mutation, and intronic SNPs. We demonstrated the ability to phase mutations, confirm compound heterozygosity, and assign haplotypes. We also detected two known risk variants in some Parkinson's patients. Rare false positives were easily identified and filtered, with the Nanopolish quality score adjusted for the number of reads a very robust discriminator. In two individuals carrying a recombinant allele, we were able to detect and fully define it in one carrier, where it included a 55-base pair deletion, but not in another one, suggesting a limitation of the PCR enrichment method. Missense mutations were detected at the correct zygosity, except for the case where the RecNciI one was missed.

conclusionThe Oxford Nanopore MinION can detect missense mutations and an exonic deletion in this difficult gene, with the added advantages of phasing and intronic analysis. It can be used as an efficient research tool, but additional work is required to exclude all recombinants.

Indexed as

Mutation, MissenseGaucher DiseaseGenetic TestingGlucosylceramidaseHumansReagent Kits, DiagnosticReproducibility of ResultsSensitivity and SpecificitySequence Analysis, DNAGlucosylceramidaseReagent Kits, DiagnosticGaucher diseaseGBAlong-read sequencingmutation detectionmutation phasingOxford Nanopore MinIONParkinson’s disease

Identifiers

PMID30637984
PMCPMC6418358
OpenAlexW2909662798

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.