PDZD4 and hepatocellular carcinoma: Finally, through multivariate Cox regression analysis, we screened out 9 neutrophil-related genes (PDLIM3, KLF2, ROR2, PGF, EFNB1, PDZD4, PLN, PCDH17, DOK5, Supplementary Table S4) that are beneficial for predicting the prognosis of HCC patients.