Evidence map›Paper›PMID 31330573›Full record

SynthesisThe journal of gene medicine2019

Methylenetetrahydrofolate reductase polymorphisms and colorectal cancer prognosis: A meta-analysis.

Xin-Lin Chen, Yu-Mei Wang, Fei Zhao, Zheng Chen, Xiaofei Yang, Cong Sun, Yunpeng Gao, Tian-Ge Yang, Guo Tian, Yi-Ming Chen and 3 more

Abstract readMeta-AnalysisReview
In one paragraph

Synthesis in The journal of gene medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
–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

9 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. The Roles ofNutrients · 2022
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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

13 authors.

Xin-Lin ChenSchool of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou, China.ORCID 0000-0002-2650-8051
Yu-Mei WangDepartment of Pharmacology, School of Chinese Material Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China.
Fei ZhaoSchool of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou, China.
Zheng ChenThe Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China.
Xiaofei YangThe Second Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, China.
Cong SunZhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China.
Yunpeng GaoEugene McDermott Center for Human Growth & Development, University of Texas Southwestern Medical Center, Dallas, TX, USA.
Tian-Ge YangSchool of Acupuncture and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China.
Guo TianSchool of Acupuncture and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China.
Yi-Ming ChenSchool of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou, China.
Shui-Lian ZhuThe First Clinical College, The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China.
Xiao-Bing LinPersonnel Department, Guangzhou University of Chinese Medicine, Guangzhou, China.
Feng-Bin LiuThe First Clinical College, The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe present study focused on understanding the prognostic value of the methylenetetrahydrofolate reductase (MTHFR) single nucleotide polymorphisms rs1801133 (C667T) and rs1801131 (A1298C) in patients with colorectal cancer (CRC).

methodsA systematic literature search was conducted in March 2016. Databases, including Medline, EMBASE, Cochrane and Chinese databases (including CNKI, Wanfang and VIP), were searched to identify the relevant articles describing MTHFR polymorphisms in patients with CRC. Data regarding overall survival (OS), progression-free survival (PFS) and disease-free survival (DFS) were collected and analysed.

resultsTwenty-four studies with 5423 patients with CRC were included. Significant differences in OS, PFS and DFS were not observed among the different comparisons of patients carrying different alleles of the MTHFR rs1801133 polymorphism (including TT versus CC, TT versus CT + CC, CT + TT versus CC and CT versus CC). Compared with patients with the rs1801131 CA + AA genotypes, patients with the CC genotype had a shorter OS (hazard ratio = 1.85; 95% confidence interval = 1.30-2.65) and DFS (hazard ratio = 2.16; 95% confidence interval= 1.19-3.93). Significant differences in OS, PFS and DFS were not observed among the other patient groups (including CC versus AA, CC + CA versus AA and CA versus AA). Subgroup analysis of rs1801133 and rs1801131 showed that patients with CRC from Asian regions and Western regions demonstrated similar results.

conclusionsThe MTHFR rs1801133 polymorphism was not associated with the prognosis of patients with CRC; however, rs1801131 may be associated with the prognosis of patients with CRC. Well-designed prospective studies are necessary to obtain a better understanding of the prognostic value of rs1801133 and rs1801131.

Indexed as

Polymorphism, Single NucleotideAllelesColorectal NeoplasmsGene FrequencyGenetic Predisposition to DiseaseGenotypeHumansMethylenetetrahydrofolate Reductase (NADPH2)Odds RatioPrognosisMethylenetetrahydrofolate Reductase (NADPH2)colorectal cancergene polymorphismmeta-analysismethylenetetrahydrofolate reductaseprognosis

Identifiers

PMID31330573
PMCPMC6851539

What OpenQuestion holds

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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.