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Table 3 Specific glycoforms of PSA improve its diagnostic performance compared to total PSA

From: Decoding the glycoproteome: a new frontier for biomarker discovery in cancer

Glycoform*

Assay performance

Sample size

Refs.

Total PSA

Specific glycoform of PSA

Controls

Cases

É‘2-3 Sialylation

AUC: 0.506

Sensitivity: N/A

Specificity: N/A

AUC: 0.834

Sensitivity: 80.0%

Specificity: 72.0%

50

50

[130]

AUC: 0.806

Sensitivity: N/A

Specificity: N/A

AUC: 0.971

Sensitivity: 85.7%

Specificity: 95.3%

29

50

[129]

(Test set)

AUC: 0.60

Sensitivity: 90.6%

Specificity: 20.5%

(Test set)

AUC: 0.84

Sensitivity: 90.6%

Specificity: 64.2%

Training: 50

Test: 176

Training: 50

Test: 138

[131]

Core-fucosylation

AUC: 0.89

Sensitivity: N/A

Specificity: N/A

AUC: 0.94

Sensitivity: 90%

Specificity: 95%

29

44

[133]

AUC: 0.629

Sensitivity: N/A

Specificity: N/A

AUC: 0.729

Sensitivity: 90%

Specificity: 36%

87

165

[134]

LacdiNAc

AUC: 0.712

Sensitivity: 90.0%

Specificity: 27.0%

AUC: 0.827

Sensitivity: 90.0%

Specificity: 48.6%

Prostate biopsy cohort: 347

Prostate biopsy cohort: 371

[135]

AUC: 0.559

Sensitivity: N/A

Specificity: N/A

AUC: 0.851

Sensitivity: 88.4%

Specificity: 40.7%

27

44

[135]

  1. *Symbols: blue square – N-acetylglucosamine (GlcNAc); yellow square – N-acetylgalactosamine (GalNAc); green circle – mannose; yellow circle – galactose; red triangle – fucose; purple diamond – N-acetylneuraminic acid (NeuAc, sialic acid)