OSCP1 and hepatocellular carcinoma: CircRNA_101505 was down-regulated in cisplatin-resistant HCC tissues and cell lines, and over-expression of circRNA_101505 trapped miR-103 and relieved its target, oxidored-nitro domain-containing protein 1 (NOR1), a putative tumor suppressor in HCCs (77), consequently resulting in cisplatin sensitization (78).