Comprehensive Analysis of a Ferroptosis-related Gene Signature for Overall Survival and Immunotherapy Response in Patients With Bladder Urothelial Carcinoma [post]

Hong Weng, Tong Deng, Shuai Yuan, Qiao Huang, Xian-Tao Zeng, Xing-Huan Wang
2021 unpublished
Background: Bladder urothelial carcinoma (BLCA) is the most common malignant tumor of the urinary system. Ferroptosis is a new type of programmed cell death that is iron-dependent and different from apoptosis, cell necrosis, and autophagy. Studies have indicated that many genes are involved in regulating ferroptosis or markers of ferroptosis. However, the value of genes related to ferroptosis in BLCA remains unclear.Methods: We comprehensively evaluated the differences in ferroptosis genes in
more » ... tients with BLCA and control samples based on public databases, including mRNA expression, mutations, and copy number variations. The ferroptosis gene expression profile was used for consistent clustering to obtain ferr.clusterA and ferrclusterB. An analysis of differences between groups was performed to obtain ferroptosis-related gene, and then consistent clustering was performed to obtain ferr.gene.cluster A and ferr.gene.clusterB. Subsequently, the random forest algorithm was used to reduce dimensionality, Cox analysis was used to screen characteristic genes, principal component analysis was performed, and the ferroptosis score was constructed to quantify the ferroptosis expression of a single sample.Results: According to the ferroptosis score, the samples could be divided into two groups with significant differences in prognosis, which proves that the ferroptosis expression pattern in a single tumor can predict the prognostic response of patients.Conclusion: In summary, ferroptosis-related genes are significantly related to the progression of BLCA.
doi:10.21203/ fatcat:m32tzsc2c5hq5hxybxvva2ggnq