CircHIPK3 (circRNA ID: hsa_circ_0000284), also named bladder cancer-related circular RNA-2 (BCRC-2), originates from the second exon of Homeodomain-interacting protein kinase 3 (HIPK3) gene and consists of 1099 nucleotides in length. The gene discussed is HIPK3; the disease is urinary bladder carcinoma.