There was no association between expression of the e-cadherin fragment in the serum and any of the following parameters: age, race, preoperative PSA, tumour stage, Gleason score (categorised Gleason sum <7; 7; >7), multifocality, seminal vesicle involvement, surgical margin, extraprostatic extension and weight of prostate gland (Cramer's V; values ranged from 0.18 to 0.29). Here, CDH1 is linked to neoplasm.