TWIST1 and hepatocellular carcinoma: Knocking down circZNF609 represses the expression level of transfer-related proteins [matrix metalloproteinase (MMP2), (MMP7)], stemness-related transcription factors (OCT4 and Nanog), EMT-related proteins (N-cadherin, Twist), while the proliferation and spheroidizing ability of HCC cells are significantly inhibited.