RNF13 and neoplasm: The circ_0026782, circ_0001946, circ_0004826, circ_0077837, circ_0030586, circ_0008039, circ_0001346, and circ_0003141 are spliced from ITGA7, CDR1, UTRN, EPB41L2, ABCC4, PRKAR1B, RNF13, and UBAP2, which all play an important effect in tumor proliferation, migration, and metastasis.