Research Article

Circulating MicroRNA-21 Is a Potential Diagnostic Biomarker in Gastric Cancer

Table 2

Association of miR-21, CEA, and CA125 expression with the clinical stage.

Clinical stageSerum miR-21miR-21 in PMBCsCA199CEA
ExpressionPositive rate (%)ExpressionPositive rate (%)Expression (U/mL)Positive rate (%)Expression (U/mL)Positive rate (%)

I9 32.41 (22.53–52.13) (8/9)33.12 (23.55–52.32) (7/9)22.66 (8.23–55.12) 44.44 (4/9)16.3 (8.75–54.43) 33.33 (3/9)
II1132.33 (21.65–52.77) (10/11)31.22 (22.55–50.11) (9/11)30.85 (22.89–89.43) 54.54 (6/11)48.91 (19.75–78.93) 45.45 (5/11)
III1033.08 (23.01–53.68) (9/10)31.83 (22.79–49.94) (9/10)48.44 (33.77–88.88) 40.00 (4/10)57.99 (21.33–88.12) 50.00 (5/10)
IV1831.11 (19.65–49.44) (17/18)30.88 (23.01–50.65) (17/18)67.82 (45.75–120.93) 61.11 (11/18)66.8 (26.57–138.64) 55.55 (10/18)
Total5032.56 (22.24–54.17) (44/50)31.75 (22.62–48.98) (81/90)46.99 (29.53–100.11) 50.00 (25/50)36.77 (22.11–88.65) 46.00 (23/50)

(versus CEA).
(versus CA125).