As show in Fig. 7A, B, downregulation of circ_0047921 suppressed the LARP1 expression in A549 and H1299 cells, and silencing of miR-1287-5p reversed the si-circ_0047921-induced effects, hinting that circ_0047921/miR-1287-5p/LARP1 axis played significant role in lung cancer progression. Here, LARP1 is linked to lung cancer.