Among the candidate circRNAs, four of them (hsa_circ_0010090, hsa_circ_0044516, hsa_circ_0044520, and hsa_circ_0044529), deriving from FBLIM1 and COL1A1 host genes, are known to be upregulated in hepatocellular carcinoma, prostate cancer, gastric cancer, lung cancer, and laryngeal squamous cell carcinoma, according to the circRNADisease v2.0 database (Table S5); there was no further information for the other circRNAs, according to the same database. This evidence concerns the gene COL1A1 and prostate cancer.