Evidence map›Paper›PMID 33659930›Full record

ReviewFaculty reviews2021

POLR3-related leukodystrophy: How do mutations affecting RNA polymerase III subunits cause hypomyelination?

Benoit Coulombe, Alexa Derksen, Roberta La Piana, Bernard Brais, Marie-Soleil Gauthier, Geneviève Bernard

Open access · diamondAbstract readReview
In one paragraph

Review in Faculty reviews, 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
1.0field-weighted citation impact, top 26% 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, 14 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

6 authors at 4 institutions in 4 countries.

Benoit CoulombeDepartment of Translational Proteomics, Institut de Recherches Cliniques de Montréal, Montréal, QC, Canada.
Alexa DerksenDepartment of Translational Proteomics, Institut de Recherches Cliniques de Montréal, Montréal, QC, Canada.
Roberta La PianaDepartment of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Montréal, QC, Canada.
Bernard BraisDepartment of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Montréal, QC, Canada.
Marie-Soleil GauthierDepartment of Translational Proteomics, Institut de Recherches Cliniques de Montréal, Montréal, QC, Canada.
Geneviève BernardChild Health and Human Development Program, Research Institute of the McGill University Health Centre, Montréal, QC, Canada.
McGill University Health Centre · CAMontreal Neurological Institute and Hospital · CAMontreal Clinical Research Institute · CATehran University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hypomyelinating leukodystrophies are a group of genetic disorders characterized by insufficient myelin deposition during development. A subset of hypomyelinating leukodystrophies, named RNA polymerase III (Pol III or POLR3)-related leukodystrophy or 4H (Hypomyelination, Hypodontia and Hypogonadotropic Hypogonadism) leukodystrophy, was found to be caused by biallelic variants in genes encoding subunits of the enzyme Pol III, including POLR3A, POLR3B, POLR3K, and POLR1C. Pol III is one of the three nuclear RNA polymerases that synthesizes small non-coding RNAs, such as tRNAs, 5S RNA, and others, that are involved in the regulation of essential cellular processes, including transcription, translation and RNA maturation. Affinity purification coupled with mass spectrometry (AP-MS) revealed that a number of mutations causing POLR3-related leukodystrophy impair normal assembly or biogenesis of Pol III, often causing a retention of the unassembled subunits in the cytoplasm. Even though these proteomic studies have helped to understand the molecular defects associated with leukodystrophy, how these mutations cause hypomyelination has yet to be defined. In this review we propose two main hypotheses to explain how mutations affecting Pol III subunits can cause hypomyelination.

Indexed as

genetic diseaseleukodystrophymyelinationprotein complex assemblyRNA polymerase III

Identifiers

PMID33659930
PMCPMC7894263
OpenAlexW3126947084

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.