VEGFA and glioblastoma: In addition, some authors [29,31,32,33] previously demonstrated on human glioblastoma tissue samples that SRSF1 also acted as a pro-angiogenic factor, being part of a molecular axis, mediated by circSMARCA5—a circular RNA that regulated cell migration and angiogenesis through the binding of SRSF1—and involved in the splicing of the Vascular Endothelial Growth Factor A. (VEGF-A).