Evidence map›Paper›PMID 33549031›Full record

ArticleBMC cancer2021

Clinical significance of HRAS and KRAS genes expression in patients with non-small-cell lung cancer - preliminary findings.

Milena Pązik, Katarzyna Michalska, Marta Żebrowska-Nawrocka, Izabela Zawadzka, Mariusz Łochowski, Ewa Balcerczak

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
2.3field-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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 33 citations in OpenAlex.

  1. Pooled it
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  17. Unfolding the role of autophagy in the cancer metabolism.Biochemistry and biophysics reports · 2021
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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

6 authors at 2 institutions in 1 country.

Milena PązikLaboratory of Molecular Diagnostics and Pharmacogenomics, Department of Pharmaceutical Biochemistry and Molecular Diagnostics, Cathedral of Laboratory and Molecular Diagnostics, Medical University of Lodz, Muszynskiego 1, 90-151, Lodz, Poland. milena.pazik@umed.lodz.pl.ORCID http://orcid.org/0000-0003-0965-4513
Katarzyna MichalskaLaboratory of Molecular Diagnostics and Pharmacogenomics, Department of Pharmaceutical Biochemistry and Molecular Diagnostics, Cathedral of Laboratory and Molecular Diagnostics, Medical University of Lodz, Muszynskiego 1, 90-151, Lodz, Poland.
Marta Żebrowska-NawrockaLaboratory of Molecular Diagnostics and Pharmacogenomics, Department of Pharmaceutical Biochemistry and Molecular Diagnostics, Cathedral of Laboratory and Molecular Diagnostics, Medical University of Lodz, Muszynskiego 1, 90-151, Lodz, Poland.
Izabela ZawadzkaLaboratory of Molecular Diagnostics and Pharmacogenomics, Department of Pharmaceutical Biochemistry and Molecular Diagnostics, Cathedral of Laboratory and Molecular Diagnostics, Medical University of Lodz, Muszynskiego 1, 90-151, Lodz, Poland.
Mariusz ŁochowskiDepartment of Thoracic Surgery, Memorial Copernicus Hospital, Medical University of Lodz, Lodz, Poland.
Ewa BalcerczakLaboratory of Molecular Diagnostics and Pharmacogenomics, Department of Pharmaceutical Biochemistry and Molecular Diagnostics, Cathedral of Laboratory and Molecular Diagnostics, Medical University of Lodz, Muszynskiego 1, 90-151, Lodz, Poland.
Medical University of Lodz · PLCopernicus Memorial Hospital · PL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe RAS family protooncogenes, including KRAS, NRAS and HRAS, encode proteins responsible for the regulation of growth, differentiation and survival of many cell types. The HRAS and KRAS oncogene mutations are well defined, however, the clinical significance of RAS expressions in non-small-cell lung cancer (NSCLC) is still uncertain.

methodsA total of 39 whole blood samples of NSCLC (the investigated group), collected at three points of time: at the time of diagnosis, 100 days and 1 year after the surgery as well as 35 tissue samples obtained during the surgery were included in this study. HRAS and KRAS genes mRNA expression were assessed using quantitative real-time polymerase chain reaction techniques.

resultsIncreased relative HRAS mRNA level in blood was found significantly more frequently in the group of smokers (p = 0.008). Patients with squamous cell carcinoma subtypes of NSCLC were more likely to show an overexpression of HRAS gene in blood, but not statistically significant (p = 0.065). In tumor tissue overexpression of HRAS gene was associated with adenocarcinoma subtype (p = 0.049). No statistically significant associations were found for the expression of KRAS with any clinicopathological parameters, except the age of patients, within the study. There were no differences between the relative HRAS and KRAS genes expression levels in blood samples taken from the same patients during the 3 observation points, as well as between blood collected from patients before surgery and tissue samples obtained during operation.

conclusionThe potential associations between high HRAS expression levels, age, smoking status and histological type of cancer were observed, which emphasizes the need for further study of the RAS family. Therefore, subsequent research involving larger numbers of patients and a longer follow-up, as well as multicenter study are necessary to confirm our findings.

Indexed as

Gene ExpressionGenes, rasAgedAged, 80 and overAge FactorsCarcinoma, Non-Small-Cell LungCarcinoma, Squamous CellFemaleHumansLung NeoplasmsMaleMiddle AgedProto-Oncogene Proteins p21(ras)Retrospective StudiesRNA, MessengerSmokingHRAS protein, humanKRAS protein, humanProto-Oncogene Proteins p21(ras)RNA, MessengerExpressionHRASKRASLung cancerNSCLC

Identifiers

PMID33549031
PMCPMC7866659
OpenAlexW3127193163

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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.