Table 1 qRT-PCR primer sequences

circ_0000020

Forward: 5′-GAGAGGATGTACGGCCAGAG-3′

Reverse: 5′-AAACTTTCCGGAGCCTCTTC-3′

miR-142-5p

Forward: 5′-GGATCATAAAGTAGAAAA-3′

Reverse: 5′-CAGTGTGTCGTGGAGT-3′

PIK3CA

Forward: 5′-CCACGACCATCATCAGGTGAA-3′

Reverse: 5′-CCTCACGGAGATTCTAAAGT-3′

DDI2

Forward: 5′-CTCCGAGGTGACCTTTTCCC-3′

Reverse: 5′-CTGTGAGAGGTCTTTCCGCA-3′

GAPDH

Forward: 5′-GAAGGTGAAGGTCGGAGTC-3′

Reverse: 5′-GAAGATGGTGATGGGATTTC-3′

U6

Forward: 5′-CTCGCTTCGGCAGCACA-3′

Reverse: 5′-AACGCTTCACGAATTTGCGT-3′