Evidence map›Paper›PMID 36061291›Full record

SynthesisFrontiers in psychiatry2022

Association between variants of MTHFR genes and psychiatric disorders: A meta-analysis.

Yu-Xin Zhang, Lu-Ping Yang, Cong Gai, Cui-Cui Cheng, Zhen-Yu Guo, Hong-Mei Sun, Die Hu

Abstract readSystematic Review
In one paragraph

Synthesis in Frontiers in psychiatry, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
–field-weighted citation impact
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

24 citing papers in PubMed.

  1. Behavioral sciences (Basel, Switzerland) · 2026
    Article
  2. Article
  3. Vitamin D and Vitamin BDiseases (Basel, Switzerland) · 2026
    Review
  4. Review
  5. Article
  6. Novel MTHFR variants manifesting with hereditary spastic paraplegia and recurrent pulmonary embolism: a case report and literature review of adult-onset severe MTHFR deficiency.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Review
  7. Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Frontiers in psychiatry · 2025
    Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Review
  19. Article
  20. MTHFR genetic testing: is there a clinical utility?Revista da Associacao Medica Brasileira (1992) · 2024
    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

7 authors.

Yu-Xin ZhangDepartment of Anatomy, School of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
Lu-Ping YangSchool of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China.
Cong GaiDepartment of Anatomy, School of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
Cui-Cui ChengDepartment of Anatomy, School of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
Zhen-Yu GuoDepartment of Anatomy, School of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
Hong-Mei SunDepartment of Anatomy, School of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
Die HuDepartment of Anatomy, School of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Psychiatric disorders have seriously affected human life, one of the risk genes related to psychosis is the methylenetetrahydrofolatereductase (MTHFR) gene. This gene has a potential role in psychiatric disorders. Therefore, a meta-analysis is conducted to investigate the correlations between two prevalent MTHFR single nucleotide polymorphisms (SNPs), MTHFR C677T, A1298C, severe psychological disorders (schizophrenia, major depression, bipolar disorder). Methods: A total of 81 published studies were screened and selected by a search of electronic databases up to April 2022. Odds ratios (ORs) with 95% confidence intervals (CIs) were used to assess the association between MTHFR polymorphism and psychiatric disorders susceptibility by using random effect models. Results: We found that MTHFR C677T polymorphism is significantly related to schizophrenia and major depression in the overall population. MTHFR C677T has been linked to an increased risk of bipolar disorder in the recessive model (TT vs. CT + CC). Ethnic subgroup analysis shows that schizophrenia and major depression significantly correlate with MTHFR C677T and A1298C in Asian populations but not Caucasians. Besides, schizophrenia is correlated substantially with MTHFR C677T in the African population. However, the MTHFR A1298C polymorphism is only marginally linked to major depression. Conclusion: Findings of the current study revealed that MTHFR may contribute to the common pathogenesis of psychiatric diseases and that its variants may be essential in controlling the expression of psychosis-related genes. This study could help the researchers and health specialists in the early diagnosis and treatment of psychiatric disorders.

Indexed as

disordersgene variantsmeta-analysisMTHFR A1298CMTHFR C677T

Identifiers

PMID36061291
PMCPMC9433753

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.