SNHG3 and lung carcinoma: Among the lncRNAs, small nucleolar RNA host gene 3 (SNHG3) exerts a positive regulatory effect on the expression of SUMO2 by acting as a molecular sponge for miR-515-5p, has been found to be overexpressed in lung cancer tissues and cells, and is known to promote cell proliferation, migration, invasion, and EMT process (Li et al. 2021).