ATF7 and hepatocellular carcinoma: In conclusion, we highlight that the PCNAP1/miR-340-5p/ATF7 signaling associates with the poor survival rates of HCC patients and plays important roles in HCC cell proliferation, suggesting that the PCNAP1/miR-340-5p/ATF7 signaling may be a potential biomarker for the prognosis of and a therapeutic target for HBV-infectious HCC.