DGCR5 and esophageal squamous cell carcinoma: Besides, lncRNA DGCR5 indirectly regulates AS of Mcl-1 pre-mRNA by interacting with serine- and arginine-rich splicing factor 1 (SRSF1) to increase its stability, and contributes to the generation of the full length of Mcl-1 (Mcl-1L, anti-apoptotic isoform), thus facilitating the carcinogenesis of esophageal squamous cell carcinoma (ESCC) 55.