FAM3C and pancreatic adenocarcinoma: On the other hand, high FAM3C expression was strongly associated with poorer prognosis in PAAD, LGG, HNSC and KIRP, and when we analysed the differences in the expression of FAM3C in PAAD, LGG, HNSC and KIRP according to conjunction with more data from the TCGA and GTEx databases, we found that only FAM3C expression in PAAD was significantly higher than normal tissues.