The coverage of BCL2L12 genomic region by the circRNAs expressed in each of the 7 CRC cell lines is remarkably different, as clearly illustrated in Fig. 2C. BCL2L12 exons 4 and 5 are the most encountered among all exons of the gene in circRNAs expressed in all cell lines; however, the exon structure of circRNAs bearing these two exons differ among the 7 CRC cell lines. The gene discussed is BCL2L12; the disease is colorectal carcinoma.