Evidence map›Paper›PMID 25054136›Full record

ArticleBioMed research international2014

Allele frequency of ABO blood group antigen and the risk of esophageal cancer.

Narender Kumar, Akhil Kapoor, Ashok Kalwar, Satya Narayan, Mukesh Kumar Singhal, Akhender Kumar, Abhishek Mewara, Megh Raj Bardia

Open access · hybridAbstract read
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Article in BioMed research international, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.4field-weighted citation impact, top 35% 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

6 citing papers in PubMed, 17 citations in OpenAlex.

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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

8 authors at 3 institutions in 1 country.

Narender KumarSardar Patel Medical College, Bikaner 334003, India.ORCID 0000-0002-2427-647X
Akhil KapoorDepartment of Radiation Oncology, Sardar Patel Medical College, Bikaner 334003, India.ORCID 0000-0001-6006-2631
Ashok KalwarMedical Oncology Division, Department of Oncology, Sardar Patel Medical College, Bikaner 334003, India.
Satya NarayanDepartment of Radiation Oncology, Sardar Patel Medical College, Bikaner 334003, India.
Mukesh Kumar SinghalDepartment of Radiation Oncology, Sardar Patel Medical College, Bikaner 334003, India.
Akhender KumarMedical College & S.S.G. Hospital, Vadodara 390001, India.
Abhishek MewaraGovernment Medical College, Kota 324005, India.
Megh Raj BardiaDepartment of Radiation Oncology, Sardar Patel Medical College, Bikaner 334003, India.
Sardar Patel Medical College · INGovernment Medical College · INSir Sayajirao General Hospital Medical College · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundABO blood group and risk of squamous cell carcinoma of esophagus have been reported by many studies, but there is no discipline that had provided association with the genotype and gene frequency by population statics.

methodsWe conducted a case-control study on 480 patients with squamous cell carcinoma of the esophagus and 480 noncancer patients. ABO blood group was determined by presence of antigen with the help of monoclonal antibody. Chi-square test and odds ratio (OR) with 95% confidence intervals (CIs) were calculated by statistical methods, and gene frequencies were calculated by Hardy-Weinberg model.

resultsWe observed significant associations between ABO genotype and squamous cell carcinoma of esophagus. OR (95% CIs) was 1.69 (1.31-2.19) for presence of B antigen allele relative to its absence (P < 0.0001); in female subgroup OR (95% CIs) observed at 1.84 (1.27-2.65) was statistically significant (P = 0.001). SCC of esophagus shows significant difference in comparison to general population; blood group B is found to be higher in incidence (P = 0.0001). Increased risk of cancer was observed with absence of Rh antigen (P = 0.0001). Relatively increased gene frequency of q[B] allele is observed more significantly in female cancer patients (P = 0.003).

conclusionStatistically significant association between squamous cell carcinoma of the esophagus and ABO and Rh genotype is identified by this study. Sex and anatomical site of cancer also present with statistically significant relative association. However, larger randomised trials are required to establish the hypothesis.

Indexed as

Gene FrequencyABO Blood-Group SystemAllelesBlood Group AntigensCarcinoma, Squamous CellCase-Control StudiesEsophageal NeoplasmsFemaleHumansMaleOdds RatioABO Blood-Group SystemBlood Group Antigens

Identifiers

PMID25054136
PMCPMC4089147
OpenAlexW2150889396

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LicenceCC BY
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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.