Only two of these corresponded to integration events in or near cancer-related genes RAD23B and RAB1A (refer to the retroviral tagged cancer gene databases: the Cancer Genomics Consortium, https://www.cancergenomics.org/, and the cBio Portal for Cancer Genomics, http://www.cbioportal.org/), and none was retrieved at consecutive time points in the same animal or from different animals. Here, RAB1A is linked to cancer.