PIWIL1 and cancer: The core CT genes include CMTM1 [27], CT83 (CXorf61) [28], EZHIP (CXorf67) [29], DCAF4L2 [30], KHDRBS3 [31], LEMD1 [32], PIWIL1 [33], and SPATA6 [34], which contribute to cancer progression and metastasis.