Genetic Alterations of in Solid Tumors Using Integrative Multi-Platform Analysis

SMYD4 is a member of the SMYD family that has lysine methyltransferase function. Little is known about the roles of in cancer. The aim of this study is to investigate genetic alterations in the gene across the most prevalent solid tumors and determine its potential as a biomarker. We performed an integrative multi-platform analysis of the most common mutations, copy number alterations (CNAs), and mRNA expression levels of the family genes using cohorts available at the Cancer Genome Atlas (TCGA), cBioPortal, and the Catalogue of Somatic Mutations in Cancer (COSMIC). genes displayed a lower frequency of mutations across the studied tumors, with none of the mutations detected demonstrating sufficient discriminatory power to serve as a biomarker. In terms of CNAs, consistently exhibited heterozygous loss and downregulation across all tumors evaluated. Moreover, showed low expression in tumor samples compared to normal samples, except for stomach adenocarcinoma. demonstrated a frequent negative correlation with other members of the family and a positive correlation between CNAs and mRNA expression. Additionally, patients with low expression in STAD and LUAD tumors exhibited significantly poorer overall survival. demonstrated its role as a tumor suppressor in the majority of tumors evaluated. The consistent downregulation of , coupled with its association with cancer progression, underscores its potential usefulness as a biomarker.