KLF4 and neoplasm: The mice injected with pcDNA‐KLF4‐treated DU145 cells presented with reduced tumour volume (P < .05) while the mice injected with pcDNA‐LINC00673‐treated DU145 cells exhibited elevated tumour volumes (P < .05) when compared with mice injected with untreated DU145 cells; however, the tumour volume did not differ in mice injected with pcDNA‐NC‐treated and pcDNA‐LINC00673 + pcDNA‐KLF4‐treated DU145 cells (P > .05).