Evidence map›Paper›PMID 33693509›Full record

ArticleBrain : a journal of neurology2021

The GGC repeat expansion in NOTCH2NLC is associated with oculopharyngodistal myopathy type 3.

Jiaxi Yu, Jianwen Deng, Xueyu Guo, Jingli Shan, Xinghua Luan, Li Cao, Juan Zhao, Meng Yu, Wei Zhang, He Lv and 16 more

Erratum issuedOpen access · hybridAbstract read
In one paragraph

Article in Brain : a journal of neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 74 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed, 2 pooled it
11.7field-weighted citation impact, top 1% 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

74 citing papers in PubMed, 2 syntheses or guidelines pooled it, 134 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Structural Polymorphism of polyG Inclusions Revealed by In Situ Cryo-Electron Tomography.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
  4. Review
  5. CGG Repeat Expansion in GIPC1 is Associated with Childhood-Onset Hereditary Ataxia.Movement disorders : official journal of the Movement Disorder Society · 2026
    Article
  6. Long-read sequencing for neurological disorders: opportunities, challenges, and future directions.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Review
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14 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

26 authors at 5 institutions in 1 country.

Jiaxi YuDepartment of Neurology, Peking University First Hospital, Beijing 100034, China.ORCID 0000-0003-1206-1778
Jianwen DengDepartment of Neurology, Peking University First Hospital, Beijing 100034, China.
Xueyu GuoGrandomics Biosciences, Beijing 100176, China.
Jingli ShanResearch Institute of Neuromuscular and Neurodegenerative Diseases and Department of Neurology, Qilu Hospital, Shandong University, Jinan 250000, Shandong, China.
Xinghua LuanDepartment of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200030, China.
Li CaoDepartment of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200030, China.
Juan ZhaoDepartment of Neurology, Peking University First Hospital, Beijing 100034, China.
Meng YuDepartment of Neurology, Peking University First Hospital, Beijing 100034, China.
Wei ZhangDepartment of Neurology, Peking University First Hospital, Beijing 100034, China.
He LvDepartment of Neurology, Peking University First Hospital, Beijing 100034, China.
Zhiying XieDepartment of Neurology, Peking University First Hospital, Beijing 100034, China.
LingChao MengDepartment of Neurology, Peking University First Hospital, Beijing 100034, China.
Yiming ZhengDepartment of Neurology, Peking University First Hospital, Beijing 100034, China.
Yawen ZhaoDepartment of Neurology, Peking University First Hospital, Beijing 100034, China.
Qiang GangDepartment of Neurology, Peking University First Hospital, Beijing 100034, China.
Qingqing WangDepartment of Neurology, Peking University First Hospital, Beijing 100034, China.
Jing LiuDepartment of Neurology, Peking University First Hospital, Beijing 100034, China.
Min ZhuDepartment of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China.
Binbin ZhouDepartment of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China.
Pidong LiGrandomics Biosciences, Beijing 100176, China.
Yinzhe LiuGrandomics Biosciences, Beijing 100176, China.
Yang WangGrandomics Biosciences, Beijing 100176, China.
Chuanzhu YanResearch Institute of Neuromuscular and Neurodegenerative Diseases and Department of Neurology, Qilu Hospital, Shandong University, Jinan 250000, Shandong, China.
Daojun HongDepartment of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China.
Yun YuanDepartment of Neurology, Peking University First Hospital, Beijing 100034, China.
Zhaoxia WangDepartment of Neurology, Peking University First Hospital, Beijing 100034, China.ORCID 0000-0003-1742-9877
Peking University · CNBioscience (China) · CNNanchang University · CNShandong University · CNShanghai Jiao Tong University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Oculopharyngodistal myopathy (OPDM) is an adult-onset neuromuscular disease characterized by progressive ocular, facial, pharyngeal and distal limb muscle involvement. Trinucleotide repeat expansions in LRP12 or GIPC1 were recently reported to be associated with OPDM. However, a significant portion of OPDM patients have unknown genetic causes. In this study, long-read whole-genome sequencing and repeat-primed PCR were performed and we identified GGC repeat expansions in the NOTCH2NLC gene in 16.7% (4/24) of a cohort of Chinese OPDM patients, designated as OPDM type 3 (OPDM3). Methylation analysis indicated that methylation levels of the NOTCH2NLC gene were unaltered in OPDM3 patients, but increased significantly in asymptomatic carriers. Quantitative real-time PCR analysis indicated that NOTCH2NLC mRNA levels were increased in muscle but not in blood of OPDM3 patients. Immunofluorescence on OPDM muscle samples and expressing mutant NOTCH2NLC with (GGC)69 repeat expansions in HEK293 cells indicated that mutant NOTCH2NLC-polyglycine protein might be a major component of intranuclear inclusions, and contribute to toxicity in cultured cells. In addition, two RNA-binding proteins, hnRNP A/B and MBNL1, were both co-localized with p62 in intranuclear inclusions in OPDM muscle samples. These results indicated that a toxic protein gain-of-function mechanism and RNA gain-of-function mechanism may both play a vital role in the pathogenic processes of OPDM3. This study extended the spectrum of NOTCH2NLC repeat expansion-related diseases to a predominant myopathy phenotype presenting as OPDM, and provided evidence for possible pathogenesis of these diseases.

Indexed as

Asian PeopleChinaCohort StudiesFemaleHumansMaleMuscular DystrophiesPedigreeTrinucleotide Repeat ExpansionGGC repeat expansionNOTCH2NLCoculopharyngodistal myopathyRNA gain-of-function mechanismtoxic protein gain-of-function mechanism

Identifiers

PMID33693509
PMCPMC8320266
OpenAlexW3133499372

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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.