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- W3217211863 abstract "Abstract Colorectal cancer (CRC) is among the most widely spread cancers globally. Aberrant alternative polyadenylation (APA) plays a role in cancer onset and its progression. Consequently, this study focused on highlighting the role of APA events and signals in the prognosis of patients with CRC. The APA events, RNA sequencing (RNA-seq), somatic mutations, copy number variants (CNVs), and clinical information of the CRC cohort were obtained from The Cancer Genome Atlas (TCGA) database and UCSC (University of California-Santa Cruz) Xena database. The entire set was sorted into two sets: a training set and a test set in a ratio of 1:1. 197 prognosis-related APA events were collected by performing univariate Cox regression signature in patients with CRC. Subsequently, a signature for APA events was established by least absolute shrinkage and selection operator (LASSO) and multivariate Cox analysis. The risk scores were measured for individual patients on the basis of the signature and patients were sorted into two groups; the high-risk group and the low-risk group as per their median risk scores. Kaplan-Meier curves, principal component analysis (PCA), and time-dependent receiver operator characteristic (ROC) curves revealed that the signature was able to predict patient prognosis effectively and further validation was provided in the test set and the entire set. Both the groups highlighted various distributions of mutations and CNVs. Tumor mutation burden (TMB) alone and in combination with the signature predicted the prognosis of CRC patients, but the gene frequencies of TMBs and CNVs did not change in the low- and high-risk groups. Moreover, immunotherapy and chemotherapy treatments showed different responses to PD-1 inhibitors and 26 chemotherapeutic agents in the low and high-risk groups based on the tumor immune dysfunction and exclusion (TIDE) and genomics of drugs sensitivity in cancer (GDSC) databases. This study helped in understanding APA events during the progression of CRC in great detail, and the signature for prognosis-related APA events can work as the potential predictors for survival and treatment in patients with CRC." @default.
- W3217211863 created "2021-12-06" @default.
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- W3217211863 date "2021-12-02" @default.
- W3217211863 modified "2023-09-27" @default.
- W3217211863 title "Alternative Polyadenylation Associated with Prognosis and Therapy in Colorectal Cancer" @default.
- W3217211863 doi "https://doi.org/10.21203/rs.3.rs-1118764/v1" @default.
- W3217211863 hasPublicationYear "2021" @default.
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