Evidence map›Paper›PMID 34644732›Full record

ArticleClinics (Sao Paulo, Brazil)2021

Methylene tetrahydrofolate reductase (MTHFR) and vascular endothelial growth factor (VEGF) polymorphisms in Brazilian patients with Hepatitis C virus (HCV)-related hepatocellular carcinoma (HCC).

Sylene C R Carvalho, Luydson R S Vasconcelos, Leonardo da Fonseca, Rodrigo F Carmo, Michele T Tomitão, Dayse C B L Aroucha, Leila M M B Pereira, José Tadeu Stefano, Ulysses Ribeiro-Júnior, Claudia P Oliveira and 1 more

Open access · goldAbstract read
In one paragraph

Article in Clinics (Sao Paulo, Brazil), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.8field-weighted citation impact, top 26% 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

3 citing papers in PubMed, 10 citations in OpenAlex.

  1. Review
  2. Article
  3. 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

11 authors at 5 institutions in 1 country.

Sylene C R CarvalhoHospital Universitario Oswaldo Cruz, Faculdade de Medicina, Universidade de Pernambuco, Recife, PE, BR.ORCID 0000-0003-0922-701X
Luydson R S VasconcelosInstituto Aggeu Magalhaes (IAM/Fiocruz), Recife, PE, BR.ORCID 0000-0002-1625-3358
Leonardo da FonsecaOncologia Clinica, Instituto do Cancer do Estado de Sao Paulo (ICESP), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR.ORCID 0000-0002-0216-3618
Rodrigo F CarmoUniversidade Federal Vale do Sao Francisco - UNIVASF, Petrolina, PE, BR.ORCID 0000-0001-9601-6995
Michele T TomitãoDisciplina de Cirurgia do Aparelho Digestivo, Instituto do Cancer do Estado de Sao Paulo (ICESP), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR.ORCID 0000-0003-2010-5646
Dayse C B L ArouchaHospital Universitario Oswaldo Cruz, Faculdade de Medicina, Universidade de Pernambuco, Recife, PE, BR.ORCID 0000-0001-9184-6885
Leila M M B PereiraHospital Universitario Oswaldo Cruz, Faculdade de Medicina, Universidade de Pernambuco, Recife, PE, BR.ORCID 0000-0002-0616-8811
José Tadeu StefanoLaboratorio de Gastroenterologia Clinica e Experimental (LIM-07), Divisao de Gastroenterologia Clinica e Hepatologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR.ORCID 0000-0002-0218-1920
Ulysses Ribeiro-JúniorDisciplina de Cirurgia do Aparelho Digestivo, Instituto do Cancer do Estado de Sao Paulo (ICESP), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR.ORCID 0000-0003-1711-7347
Claudia P OliveiraLaboratorio de Gastroenterologia Clinica e Experimental (LIM-07), Divisao de Gastroenterologia Clinica e Hepatologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR.ORCID 0000-0002-2848-417X
Flair J CarrilhoLaboratorio de Gastroenterologia Clinica e Experimental (LIM-07), Divisao de Gastroenterologia Clinica e Hepatologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR.ORCID 0000-0002-7682-3105
Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo · BRHospital Universitário Oswaldo Cruz · BRInstituto do Câncer do Estado de São Paulo · BRFundação Oswaldo Cruz · BRUniversidade Federal do Vale do São Francisco · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThe folate pathway is involved in hepatic carcinogenesis and angiogenesis. Polymorphisms in genes related to such processes, including methylene tetrahydrofolate reductase (MTHFR) and vascular endothelial growth factor (VEGF)] may play an important role in the development of hepatocellular carcinoma (HCC). The objective of this study was to evaluate MTHFR and VEGF polymorphisms in Brazilian patients with hepatitis C virus (HCV)-related HCC.

methodsA total of 119 patients diagnosed with confirmed HCC and HCV were included in the study. SNP genotyping assays were performed using real-time PCR. VEGFA (rs2010963, rs3025039, and rs833061) and MTHFRC677T (rs1801133, rs1801131) polymorphisms were evaluated.

resultsThe C alleles of MTHFR (rs1801131) and VEGF (rs2010963) were associated with protection against the development of multinodular HCC, while the T allele of MTHFR (rs1801133) was associated with a higher risk of multinodular presentation [p=0.04 OR 1.835 CI (1.022-3.297)]. Multivariate analysis revealed that the GG/GC genotypes of VEGF rs2010963 were independently associated with multinodular tumors at diagnosis (p=0.013; OR 4.78 CI (1.38-16.67)].

conclusionOur results suggest that these polymorphisms may increase the risk of rapid tumor progression in patients with HCV infection. This subgroup of patients with HCC and who present polymorphism is more likely to be diagnosed with multinodular disease and not be amenable to receiving curative treatments. These data must be validated in larger cohorts, and the screening intervals can be customized based on genetic history.

Indexed as

Carcinoma, HepatocellularHepatitis CLiver NeoplasmsCase-Control StudiesGenetic Predisposition to DiseaseGenotypeHepacivirusHumansMethylenetetrahydrofolate Reductase (NADPH2)Polymorphism, Single NucleotideVascular Endothelial Growth Factor AMethylenetetrahydrofolate Reductase (NADPH2)MTHFR protein, humanVascular Endothelial Growth Factor A

Identifiers

PMID34644732
PMCPMC8478143
OpenAlexW3207196735

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.