SNHG16 and urinary bladder carcinoma: The long noncoding RNA (lncRNA) LN-associated transcript 1 (ELNAT1) could induce Ubc9 overexpression, which would then mediate the SUMOylation of hnRNPA1 and promote packaging of ELNAT1 into the extracellular vesicles (EVs) secreted by bladder cancer cell.