Evidence map›Paper›PMID 33438142›Full record

ArticleNeurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology2021

Novel compound heterozygous variants in the GFPT1 gene leading to rare limb-girdle congenital myasthenic syndrome with rimmed vacuoles.

Yanyan Ma, Ting Xiong, Guohua Lei, Jiaqi Ding, Rui Yang, Zunbo Li, Jun Guo, Dingguo Shen

Abstract readCase Reports
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In one paragraph

Article in Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
0.8field-weighted citation impact, top 27% 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 12 citations in OpenAlex.

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  4. Congenital myasthenic syndrome due to novelJournal of neuromuscular diseases · 2026
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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

8 authors at 4 institutions in 2 countries.

Yanyan Ma *Department of Neurology, Xi'an Gaoxin Hospital, Xi'an Medical College, Xi'an, 710075, China.
Ting Xiong *Department of Neurology, Xi'an Gaoxin Hospital, Xi'an Medical College, Xi'an, 710075, China.
Guohua Lei *Domestic Department of Health Management Institute, Chinese People's Liberation Army General Hospital, Beijing, 100853, China.
Jiaqi DingDepartment of Neurology, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, China.
Rui YangDepartment of Neurology, Xi'an Gaoxin Hospital, Xi'an Medical College, Xi'an, 710075, China.
Zunbo LiDepartment of Neurology, Xi'an Gaoxin Hospital, Xi'an Medical College, Xi'an, 710075, China. lzb88031347@126.com.
Jun GuoDepartment of Neurology, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, China. guojun_81@163.com.ORCID https://orcid.org/0000-0001-8053-881X
Dingguo ShenDepartment of Neurology, Chinese People's Liberation Army General Hospital, Beijing, 100853, China.
Xi'an Medical University · CNChinese General Hospital College of Nursing and Liberal Arts · PHAir Force Medical University · CNTang Du Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCongenital myasthenic syndrome (CMS) is a heterogeneous group of rare disorders with impaired neuromuscular transmission caused by genetic defects, which is characterized by fatigable muscle weakness. CASE PRESENTATION: Herein, we report a case of limb-girdle CMS (LG-CMS) in a 15-year-old Chinese girl with limb weakness and mild ptosis. The patient presented with well-defined clinical manifestations, muscle imaging, and electrophysiological features associated with CMS. On muscle biopsy, in addition to tubular aggregates identified, an extremely unusual pathological change of rimmed vacuoles in muscle fibers was observed. Whole-exome sequencing disclosed two novel heterozygous variants (c.14 T>A and c.581 T>C) in the human glutamine-fructose-6-phosphate transaminase 1 (GFPT1) gene, leading to the substitutions of phenylalanine to tyrosine (p.F5Y) and serine (p.F194S), respectively. Both variants were predicted to be likely pathogenic by SIFT, Polyphen-2, and Mutation Taster. Treatments with pyridostigmine bromide and albuterol produced a dramatic improvement.

conclusionsCollectively, molecular genetic analysis and muscle biopsy play crucial roles in the diagnosis of GFPT1-related LG-CMS with rimmed vacuoles (a rare phenotype of CMS) and have important implications for treatment decision.

Indexed as

Myasthenic Syndromes, CongenitalAdolescentFemaleGlutamine-Fructose-6-Phosphate Transaminase (Isomerizing)HumansMuscle Fibers, SkeletalMutationVacuolesGFPT1 protein, humanGlutamine-Fructose-6-Phosphate Transaminase (Isomerizing)Congenital myasthenic syndromeGFPT1Limb-girdle myastheniaNeuromuscular junctionRimmed vacuoles

Identifiers

PMID33438142
OpenAlexW3119386393

What OpenQuestion holds

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Registered trials

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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.