The Role of M6A-related CBLL1 in the Prognosis and Immune Infiltration of Pan-cancer

Abstract Background The modification of N6-methyladenosine (m6A) plays an important role in physiology and disease progression. The relationship between the role of m6a-related gene CBLL1 in pan-carcinoma and tumor immune infiltrates has remained unknown. Methods To explore the expression level of CBLL1 methylation in pan-cancer in SMART database, and download mRNA expression, mutation and clinical data in UCSC database, to analyze the expression level of CBLL1, and the relationship between CBLL1 expression and clinicopathological features, prognosis, mutation and immune microenvironment in pan-cancer. CIBERSORT was used to analyze the relationship between the expression of CBLL1 and the infiltration of pan-carcinoma immune cells. The mRNA expression data of UCSC database were used to analyze the correlation between CBLL1 expression and pan-cancer immunomodulations, checkpoints and receptor molecules. Gene Set enrichment analysis (GSEA) revealed the possible mechanism of CBLL1 in the regulation of pan-cancer progression. Results The levels of CBLL1 methylation and mRNA expression in pan-cancer tissues were abnormal. The level of CBLL1 is related to the age, race, clinical stage and treatment effect of patients with pan-carcinoma and associated with the prognosis of patients with KIRC, LUSC, THCA, THYM, MESO, PRAD, STAD, and UVM. Univariate COX regression analysis showed that expression of CBLL1 was a risk factor for poor prognosis in patients with KICH, KIRC, LAML, THYM, KIRC, PCPG, OV, PRAD, STAD, GBM and UVM.The expression level of CBLL1 was correlated with BLCA, BRCA, COAD, LAML, LGG, LUAD, LUSC, SARC, STAD, THCA, THYM and UVM tumor mutational burden (TMB), and with ACC, BRCA, CESC, COAD, DLBC, HNSC, PRAD, READ, SARC, STAD, TGCT, THCA and UCEC microsatellite instability (MSI). The expression level of CBLL1 was correlated with pan-cancer stromal cells and immune cells. The expression of CBLL1 is related to pan-cancer immunomodulators, checkpoints and receptor molecules. GSEA found that CBLL1 may participate in the progression of pan-cancer through B cell receptor singaling pathway, mRNA binding, immunoglobulin receptor binding, Positive Regulation of cell cycle phase transition and other mechanisms. Conclusions CBLL1 is abnormally expressed in patients with pan-carcinoma, which is expected to be a biomarker for prognosis, mutation and immune infiltration in patients with pan-carcinoma.