Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 1 de 1
Filter
Add more filters

Database
Country/Region as subject
Language
Affiliation country
Publication year range
1.
PLoS One ; 15(7): e0235490, 2020.
Article in English | MEDLINE | ID: mdl-32628708

ABSTRACT

Mutations in KRAS, NRAS, and BRAF (RAS/BRAF) genes are the main predictive biomarkers for the response to anti-EGFR monoclonal antibodies (MAbs) targeted therapy in metastatic colorectal cancer (mCRC). This retrospective study aimed to report the mutational status prevalence of these genes, explore their possible associations with clinicopathological features, and build and validate a predictive model. To achieve these objectives, 500 mCRC Mexican patients were screened for clinically relevant mutations in RAS/BRAF genes. Fifty-two percent of these specimens harbored clinically relevant mutations in at least one screened gene. Among these, 86% had a mutation in KRAS, 7% in NRAS, 6% in BRAF, and 2% in both NRAS and BRAF. Only tumor location in the proximal colon exhibited a significant correlation with KRAS and BRAF mutational status (p-value = 0.0414 and 0.0065, respectively). Further t-SNE analyses were made to 191 specimens to reveal patterns among patients with clinical parameters and KRAS mutational status. Then, directed by the results from classical statistical tests and t-SNE analysis, neural network models utilized entity embeddings to learn patterns and build predictive models using a minimal number of trainable parameters. This study could be the first step in the prediction for RAS/BRAF mutational status from tumoral features and could lead the way to a more detailed and more diverse dataset that could benefit from machine learning methods.


Subject(s)
Colorectal Neoplasms/genetics , Colorectal Neoplasms/pathology , GTP Phosphohydrolases/genetics , Membrane Proteins/genetics , Models, Statistical , Mutation Rate , Proto-Oncogene Proteins B-raf/genetics , Proto-Oncogene Proteins p21(ras)/genetics , Cohort Studies , Colorectal Neoplasms/epidemiology , Female , Humans , Male , Mexico/epidemiology , Middle Aged , Neural Networks, Computer , Retrospective Studies
SELECTION OF CITATIONS
SEARCH DETAIL