KLK3 and cancer: In the present study, we confirmed that two glycoforms of fPSA recognised by WFL, (fPSAWFL) and PHA-E (fPSAPHA-E), lectins that bind to N-acetyl sugar residues GalNAc, LacdiNAc and bisecting GlcNAc, are highly cancer-specific, hence are useful in distinguishing malignant from benign cases, particularly in the PSA grey-zone (tPSA level in the range of 2 to 10 ng mL-1).