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Int J Mol Sci ; 24(2)2023 Jan 06.
Article in English | MEDLINE | ID: mdl-36674608

ABSTRACT

Bladder cancer (BC) is the most common neoplasm of the urinary tract, which originates in the epithelium that covers the inner surface of the bladder. The molecular BC profile has led to the development of different classifications of non-muscle invasive bladder cancer (NMIBC) and muscle-invasive bladder cancer (MIBC). However, the genomic BC landscape profile of the Mexican population, including NMIBC and MIBC, is unknown. In this study, we aimed to identify somatic single nucleotide variants (SNVs) and copy number variations (CNVs) in Mexican patients with BC and their associations with clinical and pathological characteristics. We retrospectively evaluated 37 patients treated between 2012 and 2021 at the National Cancer Institute-Mexico (INCan). DNA samples were obtained from paraffin-embedded tumor tissues and exome sequenced. Strelka2 and Lancet packages were used to identify SNVs and insertions or deletions. FACETS was used to determine CNVs. We found a high frequency of mutations in TP53 and KMT2D, gains in 11q15.5 and 19p13.11-q12, and losses in 7q11.23. STAG2 mutations and 1q11.23 deletions were also associated with NMIBC and low histologic grade.


Subject(s)
DNA Copy Number Variations , DNA-Binding Proteins , Neoplasm Proteins , Urinary Bladder Neoplasms , Humans , Mexico , Mutation , Neoplasm Invasiveness , Retrospective Studies , Urinary Bladder Neoplasms/pathology , DNA-Binding Proteins/genetics , Neoplasm Proteins/genetics
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