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Table 3 Diagnostic performance of the three-gene methylation classifier in the training and testing set of samples (at fixed sensitivity of 85% in the training set)

From: Urine cell-based DNA methylation classifier for monitoring bladder cancer

 

Training set

Testing set

Overall

N samples

111 BC/57 C

173 R-PFBC/285 NR-PFBC

 AUC

0.874

0.741

 SN (%)

84.68

89.6

 SP (%)

68.42

30.53

 PPV (%)

83.93

43.91

 NPV (%)

69.64

82.86

Non-high-risk NMIBC

N samples

26 BC/57 C

61 R-PFBC/285 NR-PFBC

 SN (%)

73.08

88.52

 SP (%)

68.42

30.53

 PPV (%)

51.35

21.43

 NPV (%)

84.78

92.55

High-risk NMIBC

N samples

60 BC/57 C

112 R-PFBC/285 NR-PFBC

 SN (%)

86.67

90.18

 SP (%)

68.42

30.53

 PPV (%)

74.29

33.78

 NPV (%)

82.98

88.78

MIBC

N samples

25 BC/57C

 SN (%)

92

 SP (%)

68.42

 PPV (%)

56.1

 NPV (%)

95.12

Low-grade

N samples

47 BC/57 C

96 R-PFBC/285 NR-PFBC

 SN (%)

76.6

90.62

 SP (%)

68.42

30.53

 PPV (%)

66.67

30.53

 NPV (%)

78

90.62

High grade

N samples

64 BC/57 C

77 R-PFBC/285 NR-PFBC

 SN (%)

90.62

88.31

 SP (%)

68.42

30.53

 PPV (%)

76.32

25.56

 NPV (%)

86.67

90.62

  1. LG low-grade, HG high-grade, AUC area under the curve, MIBC muscle-invasive bladder cancer, NMIBC non-muscle invasive bladder cancer, NPV negative predictive value, PPV positive predictive value, SN sensitivity, SP specificity, BC bladder cancer, C control, R-PFBC recurrent patients in follow-up for bladder cancer, NR-PFBC non-recurrent patients in follow-up for bladder cancer.