Specifically, an analysis of tumor size performed as described in Materials and Methods section, established that the area of the MycERTAM;Bcl-xL;CTSLKO lesions noted on H&E-stained sections was 1.2% (+/-0.37%) of tumors collected from the MycERTAM;Bcl-xL mice. This evidence concerns the gene BCL2L1 and neoplasm.