KLF4 and neoplasm: The results showed that in contrast to injection of untreated DU145 cells, the tumour volume was slowly elevated following the injection of pcDNA‐KLF4‐treated DU145 cells, while quickly increased in response to the injection of pcDNA‐LINC00673‐treated DU145 cells; there were no tumour volume differences following injections of pcDNA‐NC‐treated and pcDNA‐LINC00673 + pcDNA‐KLF4‐treated DU145 cells (Figure 7A).