Expression pattern, immune signature, and prognostic value of RBM10 in human cancers.

Background: RNA-binding motif protein 10 (RBM10) regulates the expression of genes involved in immune responses and is associated with a wide spectrum of cancers. Meanwhile, immunotherapy is the most promising cancer treatment of our time; nevertheless, the pan-cancer role of RBM10 remains to be elucidated.

Methods: Data from multiple online databases, including ONCOMINE, UALCAN, GEPIA2, Kaplan-Meier Plotter, cBioPortal, STRING, and TIMER were analyzed. The protein expression levels of RBM10 in various tumor types were verified by immunohistochemistry (IHC).

Results: RBM10 is upregulated in multiple tumors compared with the corresponding normal tissues. In addition, RBM10 is highly mutated in various cancers. We also compared the levels of phosphorylated RBM10 between normal and primary tumor tissues. We found that the expression of RBM10 was positively correlated with Programmed cell death 1 (PD-L1) and Cytotoxic lymphocyte antigen 4 (CTLA4) in most cancers, except Thyroid carcinoma (THCA). Moreover, the expression of RBM10 was significantly related to immune cell infiltration in many cancers, suggesting that it is a promising target for cancer immunotherapy.

Conclusions: RBM10 expression is closely related to tumor prognosis and the immune microenvironment. Our findings provide new insights into the role of RBM10 in cancer diagnosis and treatment.