Evidence map›Paper›PMID 32000367›Full record

SynthesisMedicine2020

A meta-analysis and systematic review of Leigh syndrome: clinical manifestations, respiratory chain enzyme complex deficiency, and gene mutations.

Xueli Chang, Yaxin Wu, Jie Zhou, Huaxing Meng, Wei Zhang, Junhong Guo

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 2 pooled it
3.5field-weighted citation impact, top 6% 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

43 citing papers in PubMed, 2 syntheses or guidelines pooled it, 67 citations in OpenAlex.

  1. Modelling mitochondrial diseases in neuronsJournal of neuromuscular diseases · 2025
    Pooled it
  2. Pooled it
  3. Article
  4. Hydrogen Sulfide Signaling in Neurodegenerative Movement Disorders.Handbook of experimental pharmacology · 2026
    Review
  5. Mitochondrial tRNA-Derived Diseases.International journal of molecular sciences · 2025
    Review
  6. Article
  7. Neonatal and Syndromic Forms of Diabetes.Current diabetes reports · 2025
    Review
  8. Review
  9. Article
  10. Article
  11. Deep Brain Stimulation in Leigh-Like Syndrome Due to DNM1 Pathogenic Variant.Tremor and other hyperkinetic movements (New York, N.Y.) · 2025
    Article
  12. Disease models of Leigh syndrome: From yeast to organoids.Journal of inherited metabolic disease · 2024
    Review
  13. Article
  14. Leigh Syndrome due toMolecular syndromology · 2024
    Article
  15. Article
  16. Review
  17. Review
  18. Red Flags in Primary Mitochondrial Diseases: What Should We Recognize?International journal of molecular sciences · 2023
    Review
  19. Article
  20. Movement disorders clinical practice · 2023
    Article
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 2 institutions in 1 country.

Xueli ChangDepartment of Neurology, First Hospital of Shanxi Medical University, Taiyuan.
Yaxin WuThe First People's Hospital of Xianyang, Xianyang, Shaanxi, China.
Jie ZhouDepartment of Neurology, First Hospital of Shanxi Medical University, Taiyuan.
Huaxing MengDepartment of Neurology, First Hospital of Shanxi Medical University, Taiyuan.
Wei ZhangDepartment of Neurology, First Hospital of Shanxi Medical University, Taiyuan.
Junhong GuoDepartment of Neurology, First Hospital of Shanxi Medical University, Taiyuan.
Shanxi Medical University · CNFirst Hospital of Shanxi Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Leigh syndrome (also called Leigh disease or subacute necrotizing encephalomyelopathy) is a rare inherited neurometabolic disorder, which affects the central nervous system. This meta-study systematically analyzed clinical manifestations, respiratory chain enzyme complex deficiency, and gene mutations.Literature was searched for publications in MEDLINE, EMBASE, and the China National Knowledge Infrastructure database for meta-analyses of the incidence of clinical symptoms, laboratory assessments, imaging data, muscle biopsy histochemical staining, activity of the mitochondrial respiratory chain enzyme complex, gene mutations, and the association between age at disease onset and type of gene mutations.This study included 5 studies with 385 Leigh syndrome patients. The most common clinical features of Leigh syndrome included elevated blood and/or cerebrospinal fluid (CSF) levels of lactate (72%), developmental retardation (57%), hypotonia (42%), followed by respiratory dysfunction (34%), epileptic seizures (33%), poor feeding (29%), and weakness (27%). Approximately 80% of the patients had deficiencies of the respiratory chain enzyme complex or isolated complex I deficiency (35%), 32% had mitochondrial DNA (mtDNA) mutations, and 38% had nuclear DNA (nDNA) mutations. Patients with nDNA mutations were younger than those with mtDNA mutations (8.82 ± 13.88 vs 26.20 ± 41.11 years, P = .007).The data from the current meta-analysis demonstrated a variety of clinical and molecular manifestations of Leigh syndrome, with upregulated lactate levels in the blood or CSF being the most common feature. Diagnosis of Leigh syndrome could be confirmed using combined enzymatic and genetic analyses.

Indexed as

Electron Transport Complex IHumansLeigh DiseaseMutationElectron Transport Complex I

Identifiers

PMID32000367
PMCPMC7004636
OpenAlexW3003168619

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.