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Comprehensive characterization of genes associated with the TP53 signal transduction pathway in various tumors.

ABSTRACT: The TP53 signal transduction pathway is an attractive target for cancer treatments. In this study, we conducted a comprehensive molecular evaluation of 907 patients with cancer in Japan to identify genomic alterations in the TP53 pathway. TP53 mutations were frequently detected in many cancers, except melanoma, thymic tumors, gastrointestinal stromal tumors, and renal cancers. The frequencies of non-synonymous single nucleotide variants (SNVs) in the TP53 family members TP63 and TP73 were relatively low, although genes with increased frequencies of SNVs were as follows: PTEN (11.7%) in breast cancer, CDKN2A (11.1 and 9.6%) in pancreas and head and neck cancers, and ATM (18.0 and 11.1%) in liver and esophageal cancers. MDM2 expression was decreased or increased in patients with mutant or wild-type TP53, respectively. CDKN1A expression was increased with mutant TP53 in head and neck cancers. Moreover, TP63 overexpression was characteristically observed in squamous cell carcinomas of the lung, esophagus, and head and neck region. Additionally, overexpression of TP63 and TP73 was frequently observed in thymomas. Our results reveal a spectrum of genomic alterations in the TP53 pathway that is characteristic of many tumor types, and these data may be useful in the trials of targeted therapies.

SUBMITTER: Ohnami S

PROVIDER: S-EPMC5487743 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature

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Comprehensive characterization of genes associated with the TP53 signal transduction pathway in various tumors.

Ohnami Shumpei S Ohshima Keiichi K Nagashima Takeshi T Urakami Kenichi K Shimoda Yuji Y Saito Junko J Naruoka Akane A Hatakeyama Keiichi K Mochizuki Tohru T Serizawa Masakuni M Ohnami Sumiko S Kusuhara Masatoshi M Yamaguchi Ken K

Molecular and cellular biochemistry 20170303 1-2

The TP53 signal transduction pathway is an attractive target for cancer treatments. In this study, we conducted a comprehensive molecular evaluation of 907 patients with cancer in Japan to identify genomic alterations in the TP53 pathway. TP53 mutations were frequently detected in many cancers, except melanoma, thymic tumors, gastrointestinal stromal tumors, and renal cancers. The frequencies of non-synonymous single nucleotide variants (SNVs) in the TP53 family members TP63 and TP73 were relati ...[more]

PMID: 28258440

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Dataset Information

Comprehensive characterization of genes associated with the TP53 signal transduction pathway in various tumors.

Publications

Comprehensive characterization of genes associated with the TP53 signal transduction pathway in various tumors.

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