VRK1 and neoplasm: The analysis revealed that high expression levels of tumor-promoter circRNAs such as circSEPT9, hsa_circ_0001785, hsa_circ_0108942, circKIF4A, and circEPSTI1 were associated with a shorter survival time, while tumor suppressor circRNAs such as circ-1073, circ-VRK1, hsa_circ_0068033, circTADA2A-E6, and circRNA_103809 were linked to a favorable prognosis.