SynthesisDisease markers2015
MTHFR C677T gene polymorphism and head and neck cancer risk: a meta-analysis based on 23 publications.
Synthesis in Disease markers, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled 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.
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.
Who cites it
6 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Association between the MTHFR C677T polymorphism and risk of cancer: evidence from 446 case-control studies.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2015Pooled it
- MTHFR Gene Polymorphisms: A Single Gene with Wide-Ranging Clinical Implications-A Review.Genes · 2025Review
- Homocysteine metabolism as the target for predictive medical approach, disease prevention, prognosis, and treatments tailored to the person.The EPMA journal · 2021Review
- Combined Effect of HPV and Several Gene SNPs in Laryngeal Cancer.Medicina (Kaunas, Lithuania) · 2020Article
- Modulators of Redox Metabolism in Head and Neck Cancer.Antioxidants & redox signaling · 2018Review
- Influence of MTHFR Genetic Background on p16 and MGMT Methylation in Oral Squamous Cell Cancer.International journal of molecular sciences · 2017Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveConflicting results on the association between MTHFR polymorphism and head and neck cancer (HNC) risk were reported. We therefore performed a meta-analysis to derive a more precise relationship between MTHFR C677T polymorphism and HNC risk.
methodsThree online databases of PubMed, Embase, and CNKI were researched on the associations between MTHFR C677T polymorphism and HNC risk. Twenty-three published case-control studies involving 4,955 cases and 8,805 controls were collected. Odds ratios (ORs) with 95% confidence interval (CI) were used to evaluate the relationship between MTHFR C677T polymorphism and HNC risk. Sensitivity analysis, cumulative analyses, and publication bias were conducted to validate the strength of the results.
resultsOverall, no significant association between MTHFR C677T polymorphism and HNC risk was found in this meta-analysis (T versus C: OR = 1.04, 95% CI = 0.92-1.18; TT versus CC: OR = 1.15, 95% CI = 0.90-1.46; CT versus CC: OR = 1.00, 95% CI = 0.85-1.17; CT + TT versus CC: OR = 1.01, 95% CI = 0.87-1.18; TT versus CC + CT: OR = 1.11, 95% CI = 0.98-1.26). In the subgroup analysis by HWE, ethnicity, study design, cancer location, and negative significant associations were detected in almost all genetic models, except for few significant risks that were found in thyroid cancer.
conclusionThis meta-analysis demonstrates that MTHFR C677T polymorphism may not be a risk factor for the developing of HNC.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.