Specific cancer types and prognosis in patients with variations in the KEAP1‐NRF2 system: A retrospective cohort study

The KEAP1–NRF2 system induces the expression of antioxidant genes in response to various types of oxidative stress. Some cancer cells activate this system, which increases their malignancy through genetic mutations. We performed a retrospective cohort study using the C‐CAT database, which contains t...

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Veröffentlicht in:Cancer science 2024-12, Vol.115 (12), p.4034-4044
Hauptverfasser: Iwasaki, Tomoyuki, Shirota, Hidekazu, Sasaki, Keiju, Ouchi, Kota, Nakayama, Yuki, Oshikiri, Hiroyuki, Otsuki, Akihito, Suzuki, Takafumi, Yamamoto, Masayuki, Ishioka, Chikashi
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container_issue 12
container_start_page 4034
container_title Cancer science
container_volume 115
creator Iwasaki, Tomoyuki
Shirota, Hidekazu
Sasaki, Keiju
Ouchi, Kota
Nakayama, Yuki
Oshikiri, Hiroyuki
Otsuki, Akihito
Suzuki, Takafumi
Yamamoto, Masayuki
Ishioka, Chikashi
description The KEAP1–NRF2 system induces the expression of antioxidant genes in response to various types of oxidative stress. Some cancer cells activate this system, which increases their malignancy through genetic mutations. We performed a retrospective cohort study using the C‐CAT database, which contains the gene‐panel sequence data from 60,056 cases of diagnosed solid tumors. We analyzed somatic mutations in NRF2 and KEAP1 genes and their associations with clinical outcomes. Variants in the NRF2 gene were clustered in exon 2, which encodes the DLG and ETGE motifs essential for KEAP1 interaction. The NRF2 variants were frequently observed in esophageal and lung squamous cell carcinoma with frequencies of 35.9% and 19.6%, respectively. Among these mutations, the NRF2 variants in the ETGE motif were indicators of a worse prognosis. KEAP1 variants were found in 2.5% of all cases. The variants were frequent in lung cancer and showed a worse prognosis in lung and other types of adenocarcinomas. We then conducted gene expression analysis using TCGA data. While cancers with DLG and ETGE variants were similar in terms of gene expression profiles, there were significant differences between cancers with KEAP1 and NRF2 variants. Our results indicate that genetic alteration of the KEAP1–NRF2 pathway is a major factor in patient prognosis for each cancer type and its genetic variant. Variants in NRF2 and KEAP1 genes can characterize the biological basis of each cancer type and are involved in carcinogenesis, resistance to therapy, and other biological differences. This study examined variants in the KEAP1–NRF2 system for their correlation with cancer type specificity, prognosis, and biological characteristics from the pan‐cancer cohort. The results showed that the presence of variants in NRF2‐DLG, NRF2‐ETGE motifs, and KEAP1 gene play an important role in predicting patient prognosis and defining new therapeutic targets.
doi_str_mv 10.1111/cas.16355
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Some cancer cells activate this system, which increases their malignancy through genetic mutations. We performed a retrospective cohort study using the C‐CAT database, which contains the gene‐panel sequence data from 60,056 cases of diagnosed solid tumors. We analyzed somatic mutations in NRF2 and KEAP1 genes and their associations with clinical outcomes. Variants in the NRF2 gene were clustered in exon 2, which encodes the DLG and ETGE motifs essential for KEAP1 interaction. The NRF2 variants were frequently observed in esophageal and lung squamous cell carcinoma with frequencies of 35.9% and 19.6%, respectively. Among these mutations, the NRF2 variants in the ETGE motif were indicators of a worse prognosis. KEAP1 variants were found in 2.5% of all cases. The variants were frequent in lung cancer and showed a worse prognosis in lung and other types of adenocarcinomas. We then conducted gene expression analysis using TCGA data. While cancers with DLG and ETGE variants were similar in terms of gene expression profiles, there were significant differences between cancers with KEAP1 and NRF2 variants. Our results indicate that genetic alteration of the KEAP1–NRF2 pathway is a major factor in patient prognosis for each cancer type and its genetic variant. Variants in NRF2 and KEAP1 genes can characterize the biological basis of each cancer type and are involved in carcinogenesis, resistance to therapy, and other biological differences. This study examined variants in the KEAP1–NRF2 system for their correlation with cancer type specificity, prognosis, and biological characteristics from the pan‐cancer cohort. 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genetics</topic><topic>Carcinoma, Squamous Cell - metabolism</topic><topic>Carcinoma, Squamous Cell - mortality</topic><topic>Carcinoma, Squamous Cell - pathology</topic><topic>CGP test</topic><topic>Chemotherapy</topic><topic>C‐CAT data</topic><topic>Development and progression</topic><topic>Esophageal cancer</topic><topic>Esophageal carcinoma</topic><topic>Female</topic><topic>Gene expression</topic><topic>Gene Expression Regulation, Neoplastic</topic><topic>Gene mutations</topic><topic>Genes</topic><topic>Genetic aspects</topic><topic>Genetic diversity</topic><topic>Genomes</topic><topic>Genomics</topic><topic>Humans</topic><topic>KEAP1</topic><topic>Kelch-Like ECH-Associated Protein 1 - genetics</topic><topic>Kelch-Like ECH-Associated Protein 1 - metabolism</topic><topic>Lung cancer</topic><topic>Lung carcinoma</topic><topic>Lung Neoplasms - genetics</topic><topic>Lung Neoplasms - metabolism</topic><topic>Lung Neoplasms - mortality</topic><topic>Lung Neoplasms - pathology</topic><topic>Male</topic><topic>Malignancy</topic><topic>Medical prognosis</topic><topic>Mutation</topic><topic>National health insurance</topic><topic>Neoplasms - 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Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Cancer science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Iwasaki, Tomoyuki</au><au>Shirota, Hidekazu</au><au>Sasaki, Keiju</au><au>Ouchi, Kota</au><au>Nakayama, Yuki</au><au>Oshikiri, Hiroyuki</au><au>Otsuki, Akihito</au><au>Suzuki, Takafumi</au><au>Yamamoto, Masayuki</au><au>Ishioka, Chikashi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Specific cancer types and prognosis in patients with variations in the KEAP1‐NRF2 system: A retrospective cohort study</atitle><jtitle>Cancer science</jtitle><addtitle>Cancer Sci</addtitle><date>2024-12</date><risdate>2024</risdate><volume>115</volume><issue>12</issue><spage>4034</spage><epage>4044</epage><pages>4034-4044</pages><issn>1347-9032</issn><issn>1349-7006</issn><eissn>1349-7006</eissn><abstract>The KEAP1–NRF2 system induces the expression of antioxidant genes in response to various types of oxidative stress. Some cancer cells activate this system, which increases their malignancy through genetic mutations. We performed a retrospective cohort study using the C‐CAT database, which contains the gene‐panel sequence data from 60,056 cases of diagnosed solid tumors. We analyzed somatic mutations in NRF2 and KEAP1 genes and their associations with clinical outcomes. Variants in the NRF2 gene were clustered in exon 2, which encodes the DLG and ETGE motifs essential for KEAP1 interaction. The NRF2 variants were frequently observed in esophageal and lung squamous cell carcinoma with frequencies of 35.9% and 19.6%, respectively. Among these mutations, the NRF2 variants in the ETGE motif were indicators of a worse prognosis. KEAP1 variants were found in 2.5% of all cases. The variants were frequent in lung cancer and showed a worse prognosis in lung and other types of adenocarcinomas. We then conducted gene expression analysis using TCGA data. While cancers with DLG and ETGE variants were similar in terms of gene expression profiles, there were significant differences between cancers with KEAP1 and NRF2 variants. Our results indicate that genetic alteration of the KEAP1–NRF2 pathway is a major factor in patient prognosis for each cancer type and its genetic variant. Variants in NRF2 and KEAP1 genes can characterize the biological basis of each cancer type and are involved in carcinogenesis, resistance to therapy, and other biological differences. This study examined variants in the KEAP1–NRF2 system for their correlation with cancer type specificity, prognosis, and biological characteristics from the pan‐cancer cohort. The results showed that the presence of variants in NRF2‐DLG, NRF2‐ETGE motifs, and KEAP1 gene play an important role in predicting patient prognosis and defining new therapeutic targets.</abstract><cop>England</cop><pub>John Wiley &amp; Sons, Inc</pub><pmid>39327066</pmid><doi>10.1111/cas.16355</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0002-3023-1227</orcidid><orcidid>https://orcid.org/0000-0001-9154-9004</orcidid><orcidid>https://orcid.org/0000-0002-5572-1337</orcidid><oa>free_for_read</oa></addata></record>
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source Wiley-Blackwell Open Access Collection; MEDLINE; Wiley Online Library Journals; DOAJ Directory of Open Access Journals; PubMed Central
subjects Algorithms
Amino acids
Analysis
Cancer patients
Cancer therapies
Carcinogenesis
Carcinoma, Squamous Cell - genetics
Carcinoma, Squamous Cell - metabolism
Carcinoma, Squamous Cell - mortality
Carcinoma, Squamous Cell - pathology
CGP test
Chemotherapy
C‐CAT data
Development and progression
Esophageal cancer
Esophageal carcinoma
Female
Gene expression
Gene Expression Regulation, Neoplastic
Gene mutations
Genes
Genetic aspects
Genetic diversity
Genomes
Genomics
Humans
KEAP1
Kelch-Like ECH-Associated Protein 1 - genetics
Kelch-Like ECH-Associated Protein 1 - metabolism
Lung cancer
Lung carcinoma
Lung Neoplasms - genetics
Lung Neoplasms - metabolism
Lung Neoplasms - mortality
Lung Neoplasms - pathology
Male
Malignancy
Medical prognosis
Mutation
National health insurance
Neoplasms - genetics
Neoplasms - metabolism
Neoplasms - pathology
NF-E2-Related Factor 2 - genetics
NF-E2-Related Factor 2 - metabolism
NRF2
NRF2 protein
Original
ORIGINAL ARTICLE
Oxidative stress
Patients
Prognosis
Retrospective Studies
Software
solid tumor
Solid tumors
Squamous cell carcinoma
Tumors
title Specific cancer types and prognosis in patients with variations in the KEAP1‐NRF2 system: A retrospective cohort study
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