Evidence map›Paper›PMID 22976764›Full record

ArticleJournal of inherited metabolic disease2013

A novel congenital disorder of glycosylation type without central nervous system involvement caused by mutations in the phosphoglucomutase 1 gene.

Belén Pérez, Celia Medrano, Maria Jesus Ecay, Pedro Ruiz-Sala, Mercedes Martínez-Pardo, Magdalena Ugarte, Celia Pérez-Cerdá

Abstract readCase Reports
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In one paragraph

Article in Journal of inherited metabolic disease, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
2.8field-weighted citation impact, top 9% 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

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 56 citations in OpenAlex.

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  17. Exercise in muscle glycogen storage diseases.Journal of inherited metabolic disease · 2015
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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

7 authors at 4 institutions in 1 country.

Belén PérezCentro de Diagnóstico de Enfermedades Moleculares, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), IDIPaz, Universidad Autónoma Madrid, Madrid, Spain.
Celia Medrano
Maria Jesus Ecay
Pedro Ruiz-Sala
Mercedes Martínez-Pardo
Magdalena Ugarte
Celia Pérez-Cerdá
Centro de Investigación Biomédica en Red · ESCentre for Biomedical Network Research on Rare Diseases · ESCentro de Biología Molecular Severo Ochoa · ESHospital Universitario Ramón y Cajal · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Recent years have seen great advances in our knowledge of congenital disorders of glycosylation (CDG), a clinically and biochemically heterogeneous group of genetic diseases caused by defects in the synthesis (CDG-I) or processing (CDG-II) of glycans that form glycoconjugates. This paper reports a new subtype of non-neurological CDG involving the impaired cytoplasmic biosynthesis of nucleotide sugars needed for glycan biosynthesis. A patient presented with muscle fatigue, elevated creatine kinase, growth hormone deficiency, and first branchial arch syndrome. These findings, together with the abnormal type II plasma transferrin isoform profile detected, was compatible with a CDG. Functional testing and clinical analyses suggested a deficiency in the interconversion of glucose-1-phosphate and glucose-6-phosphate catalyzed by phosphoglucomutase (PGM1), a defect previously described as glycogenosis type XIV (GSDXIV, MIM 612934). PGM1 activity in patient-derived fibroblasts was significantly reduced, as was the quantity of immunoreactive PGM1 protein (Western blot assays). Mutation analysis of PGM1 and subsequent functional analysis investigating transient expression of PGM1 in immortalized patient fibroblasts, followed by ex vivo splicing assays using minigenes, allowed the characterization of two novel pathogenic mutations: c.871G>A (p.Gly291Arg) and c.1144 + 3A>T. The latter represents a severe splicing mutation leading to the out-of-frame skipping of exon 7 and the formation of a truncated protein (p.Arg343fs). MALDI mass spectra of permethylated protein N-glycans from the patient's serum suggested a marked hypoglycosylation defect. The present findings confirm that, in addition to a rare muscular glycolytic defect, PGM1 deficiency causes a non-neurological disorder of glycosylation.

Indexed as

Mutation, MissenseAdolescentCarbohydrate MetabolismCarbohydrate SequenceCentral Nervous SystemCongenital Disorders of GlycosylationDNA Mutational AnalysisHumansMaleMolecular Sequence DataPhosphoglucomutasePolymorphism, Single NucleotidePGM1 protein, humanPhosphoglucomutase

Identifiers

PMID22976764
OpenAlexW2065014515

What OpenQuestion holds

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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.