TABLE 1.
Study | Sample size | Control source | CircRNA type | Test method/ References | CircRNA level | Cutoff value | TP | FP | FN | TN | |
---|---|---|---|---|---|---|---|---|---|---|---|
BC | Control | ||||||||||
Li Y 2019 23 | 350 (0‐II: 266) | 163 | Paired adjacent tissue | Circ‐VRK1 | qRT‐PCR/2−△△Ct method/GAPDH | Down‐regulated | 0.425 | 217 | 34 | 133 | 129 |
Yang R 2019 32 | 40 (0‐II: 33) | 40 | Healthy individuals | circAGFG1 | qRT‐PCR/2−△△Ct method/GAPDH | Up‐regulated | Unclear | 26 | 4 | 14 | 36 |
Yin WB 2018 33 | 20 | 17 | Healthy individuals | hsa_circ_0001785 | qRT‐PCR/2−△△Ct method/GAPDH | Up‐regulated | 0.981 | 16 | 4 | 4 | 13 |
Yin WB 2018 33 | 20 | 17 | Healthy individuals | hsa_circ_0108942 | qRT‐PCR/2−△△Ct method/GAPDH | Up‐regulated | 0.981 | 16 | 8 | 4 | 9 |
Yin WB 2018 33 | 20 | 17 | Healthy individuals | hsa_circ_0068033 | qRT‐PCR/2−△△Ct method/GAPDH | Down‐regulated | 0.981 | 15 | 7 | 5 | 10 |
Yin WB 2018 33 | 57 (0‐II: 21) | 17 | Healthy individuals | hsa_circ_0001785 | qRT‐PCR/2−△△Ct method/GAPDH | Up‐regulated | 0.981 | 44 | 5 | 13 | 12 |
Lü L 2017 25 | 51 (0‐II: 46) | 51 | Adjacent noncancer tissue | hsa_circ_103110 | qRT‐PCR/ΔCt method GAPDH | Down‐regulated | 8.97 | 32 | 19 | 19 | 32 |
Lü L 2017 25 | 51(0‐II: 46) | 51 | Adjacent noncancer tissue | hsa_circ_104689 | qRT‐PCR/ΔCt method GAPDH | Down‐regulated | 7.67 | 29 | 23 | 22 | 28 |
Lü L 2017 25 | 51(0‐II: 46) | 51 | Adjacent noncancer tissue | hsa_circ_104821 | qRT‐PCR/ΔCt method GAPDH | Down‐regulated | 6.04 | 29 | 22 | 22 | 29 |
Lü L 2017 25 | 51(0‐II: 46) | 51 | Adjacent noncancer tissue | hsa_circ_006054 | qRT‐PCR/ΔCt method GAPDH | Up‐regulated | 14.84 | 33 | 16 | 18 | 35 |
Lü L 2017 25 | 51(0‐II: 46) | 51 | Adjacent noncancer tissue | hsa_circ_100219 | qRT‐PCR/ΔCt method GAPDH | Up‐regulated | 8.95 | 35 | 15 | 16 | 36 |
Lü L 2017 25 | 51(0‐II: 46) | 51 | Adjacent noncancer tissue | hsa_circ_406697 | qRT‐PCR/ΔCt method GAPDH | Up‐regulated | 14.24 | 32 | 19 | 19 | 32 |
Abbreviations: BC, breast cancer; circRNA, circular RNA; FN, false negative; FP, false positive; GAPDH, reduced glyceraldehyde‐phosphate dehydrogenase; qRT‐PCR, quantitative reverse transcription‐polymerase chain reaction; TN, true negative; TP, true positive.