We further explored progress-free survival (PFS), and interestingly, we found that YTHDF1/2 was a risk factor for cancer progress in KICH, LIHC and PRAD, while YTHDF3 was a risk factor for cancer progress in KICH and KIRP, and a protective factor in KIRC and LUSC (Fig. 2C). Here, YTHDF1 is linked to cancer.