Table 1 Primers used for quantitative real-time PCR in this study

hsa_circ_0042123

Forward: 5′-TCAGCAACAGGAGGAGCATT-3′

Reverse: 5′-CCTCAGGAAATGTCCACCACT-3′

hsa_circ_0083264

Forward: 5′-AAGCCCATCCAGAGGTTCC-3′

Reverse: 5′-CTGTTCTCCCTCTTCCTCTTCAT-3′

hsa_circ_0035127

Forward: 5′-TCTATTCATTCCTCCAAAACCTG-3′

Reverse: 5′-ATGGGAAGCGGAATGAGAG-3′

hsa_circ_0086354

Forward: 5′-ACTTGGGCTGGTGCAACTAA-3

Reverse: 5′-GGCCCGGGCCATATAGT-3′

hsa_circ_0015069

Forward: 5′-ACTCGCAGCCAGTCAGATGTA-3′

Reverse: 5′-TGACTGCACGCTCATGAACA-3′

Hsa-18s rRNA

Forward: 5′-GGACACGGACAGGATTGACA-3′

Reverse: 5′-CCAGAGTCTCGTTCGTTATCG-3′

miR-181a

Forward: 5′-TGTGATGTGGAGGTTTGC-3′

Reverse: 5′-AGTCCTGGTGTGTCCA-3′

RNU6B

Forward: 5′-CTCGCTTCGGCAGCACA-3

Reverse: 5′-TGGTGTCGTGGAGTCG-3′