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. 2021 Jul 28;12(8):1154. doi: 10.3390/genes12081154

Table 2.

microRNAs in blood and urine as potential biomarkers in ccRCC.

miRNA Sample Significant Expression of miRNA References
miR-210 Serum
  • Overexpression of serum miR-210 levels in RCC patients compared to healthy donors.

  • The AUC was 0.77 (95% confidence interval, 0.65–0.89) and the sensitivity and specificity was 65% and 83%, respectively.

[90]
miR-210
miR-1233
Serum
  • Higher level of serum miR-210 and miR-1233 in ccRCC patients compared to controls.

  • miR-210: the AUC was 0.69 (95% confidence interval, 0.61–0.77) and the sensitivity and specificity was 70% and 62,2%, respectively.

  • miR-1233: the AUC was 0.82 (95% confidence interval, 0.75–0.89) and the sensitivity and specificity was 81% and 76%, respectively.

[91]
miR-210
miR-155
Serum
  • Higher level of serum miR-210 and miR-155 levels in patients with ccRCC than in healthy controls (HCs). Furthermore, only exosomal miR-210 showed a significant upregulation in patients with ccRCC vs. HCs.

  • miR-210: the AUC was 0.87 (95% confidence interval, 0.79–0.95) and the sensitivity and specificity was 82.5% and 80%, respectively.

[92]
miR-122-5p
miR-206
Serum
  • High level of miR-122-5p and miR-206, respectively, in metastasized ccRCC and in advanced pT-stage ccRCC.

  • miR-206: the AUC was 0.73 (95% confidence interval, 0.616–0.849) and the sensitivity and specificity was 57.1% and 83.8%, respectively.

[94]
miR-221
miR-222
Plasma
  • High level of circulating miR-221 and miR-222 compared to healthy individuals.

  • High level of miR-221 in patients with metastasis compared to individuals without metastasis.

  • Correlation between high expression of miR-221 and low overall survival.

  • miR-221: the AUC was 0.696 (95% confidence interval, 0.499-0.893) and the sensitivity and specificity was 72.5% and 33.3%, respectively.

[95]
miR-193a-3p
miR-362
miR-572
miR-28-5p
miR-378
Serum
  • This 5-miRNA panel showed a high level in the stage I and stage IV groups compared with the noncancer controls.

  • The AUCs for the combination of the 5 miRNAs were 0.801 (95% CI, 0.731–0.871) and 0.797 (95% CI, 0.732–0.863) for stage I and stage I–II cases, respectively, with high sensitivity and specificity.

  • Association of these miRNAs with overall survival.

[96]
miR-190b
miR 26a-1-3p
miR-let-7i-5p
miR-615-3p
miR-200-3p
miR-9-5p
Plasma
  • Kaplan–Meier analysis confirmed the significant association of miR-let-7i-5p (95% CI, 0.21-0.84), miR-26a-1-3p (95% CI, 0.10-0.84), and miR -615-3p (95% CI = 0.11-0.54) with OS.

  • The association of miR-9-5p and miR-190 with OS was not statistically significant.

[98]
miR-210-3p
miR-21-5p
miR185-5p
miR-221-3p
miR-145-5p
Urine
  • Upregulation of miR-21-5p, miR-210-3p, and miR-221-3p in ccRCC fresh frozen tissues compared to matched normal counterparts, while miR-185-5p and miR-145-5p did not show modulation.

  • Upregulation of miR-210-3p in ccRCC urine compared to healthy controls.

  • Reduction of miR-210-3p in the ccRCC samples after surgery in the follow up study.

[100]
miR-122
miR-1271
miR-15b
Urine
  • High and significant level of miR-122, miR-1271, and miR-15b in the ccRCC urine specimens compared to control groups.

  • The AUC for the combination of the 3 miRNAs was 0.96 (95% confidence interval, 0.88-1.04) and the sensitivity and specificity were 100% and 86%, respectively.

[101]
miR-30c-5p Urine
  • Low expression of miR-30c-5p in ccRCC patients compared to controls.

  • The AUC was 0.8192 (95% confidence interval, 0.7388-0.8996) and the sensitivity and specificity was 68.57% and 100%, respectively.

[102]
miR-30a-5pme Urine
  • Significantly higher miR-30a-5pme levels in urine from ccRCC patients compared to asymptomatic controls.

  • The AUC was 0.6837 (95% confidence interval, 0.5837-0.7837) and the sensitivity and specificity was 83% and 53%, respectively.

  • Different expression of miR-30a-5pme levels in urine between metastatic and non-metastatic ccRCC.

  • The AUC was 0.7884 (95% confidence interval, 0.5505-0.8601) and the sensitivity and specificity was 80% and 71%, respectively.

[103]

Abbreviation: AUC (area under the curve).