Evidence map›Paper›PMID 26081619›Full record

SynthesisTumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine2015

Association between the MTHFR C677T polymorphism and risk of cancer: evidence from 446 case-control studies.

Shu-Zhe Xie, Zhi-Zhong Liu, Jun-hua Yu, Li Liu, Wei Wang, Dao-Lin Xie, Jiang-Bo Qin

Abstract readMeta-Analysis
PubMed Publisher
In one paragraph

Synthesis in Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
3.2field-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

20 citing papers in PubMed, 2 syntheses or guidelines pooled it, 39 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Frontiers in psychiatry · 2025
    Article
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  5. Journal of clinical medicine · 2023
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  6. Influence ofOpen life sciences · 2023
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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.

Shu-Zhe XieDepartment of General Surgery, Peace Hospital of Changzhi Medical College, Changzhi, 046000, China. xieshuzhezl@163.com.
Zhi-Zhong LiuDepartment of Gastroenterology, The Second People's Hospital of Zhuhai, Zhuhai, 519000, China.
Jun-hua YuDepartment of Neurosurgery, Ezhou Central Hospital of Hubei Province, Ezhou, Hubei, 436000, China.
Li LiuDepartment of Reproductive Medicine, First Center Hospital, Tianjin, 300192, China.
Wei WangDepartment of Gastroenterology, The Second People's Hospital of Zhuhai, Zhuhai, 519000, China.
Dao-Lin XieDepartment of Ultrasound Diagnosis, Peace Hospital of Changzhi Medical College, Changzhi, 046000, China.
Jiang-Bo QinDepartment of Ear, Nose, and Throat, Peace Hospital of Changzhi Medical College, Changzhi, 046000, China.
Changzhi Medical College Peace Hospital · CNZhuhai Hospital of Integrated Traditional Chinese and Western Medicine · CNEzhou Central Hospital · CNTianjin First Center Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Many molecular epidemiological studies have been performed to explore the association between MTHFR C677T polymorphism and cancer risk in diverse populations. However, the results were inconsistent. Hence, we performed a meta-analysis to investigate the association between cancer risk and MTHFR C677T (150,086 cases and 200,699 controls from 446 studies) polymorphism. Overall, significantly increased cancer risk was found when all eligible studies were pooled into the meta-analysis. In the further stratified and sensitivity analyses, significantly increased breast cancer risk was found in Asians and Indians, significantly decreased colon cancer risk was found, significantly decreased colorectal cancer risk was found in male population, significantly increased gastric cancer risk was found in Caucasians and Asians, significantly increased hepatocellular cancer risk was found in Asians, significantly decreased adult acute lymphoblastic leukemia (AALL) risk was found in Caucasians, significantly decreased childhood acute lymphoblastic leukemia (CALL) risk was found in Asians, and significantly increased multiple myeloma and NHL risk was found in Caucasians. In summary, this meta-analysis suggests that MTHFR C677T polymorphism is associated with increased breast cancer, gastric cancer, and hepatocellular cancer risk in Asians, is associated with increased gastric cancer, multiple myeloma, and NHL risk in Caucasians, is associated with decreased AALL risk in Caucasians, is associated with decreased CALL risk in Asians, is associated with increased breast cancer risk in Asians, is associated with decreased colon cancer risk, and is associated with decreased colorectal cancer risk in male population. Moreover, this meta-analysis also points out the importance of new studies, such as Asians of HNC, Asians of lung cancer, and Indians of breast cancer, because they had high heterogeneity in this meta-analysis (I(2) > 75%).

Indexed as

Genetic Association StudiesGenetic Predisposition to DiseaseAllelesGenotypeHumansMethylenetetrahydrofolate Reductase (NADPH2)NeoplasmsPolymorphism, Single NucleotideRisk FactorsMethylenetetrahydrofolate Reductase (NADPH2)MTHFR protein, humanCancerMeta-analysisMTHFRPolymorphism

Identifiers

PMID26081619
OpenAlexW2181739277

What OpenQuestion holds

Textmetadata
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.