STHLM3 AS NorDCaP - a Followup Study of Men on Active Surveillance of Prostate Cancer

Prostate Cancer

Active Surveillance

The aim of the STHLM3 AS NorDCaP study is to evaluate the Stockholm3 test in an active surveillance cohort to predict upgrading on rebiopsy. The study follows a paired design, evaluating our proposed protocol for follow up men on active surveillance with Stockholm3 versus the standard protocol according to national guidelines with PSA.

STHLM3 AS NorDCaP is a cross-sectional multi-center study, evaluating the predictive value of Stockholm3 test in a prostate cancer cohort on AS for upgrading on rebiopsy. Men from the study sites, diagnosed with prostate cancer and currently on AS and planned for rebiopsies will be invited to the study. Eligible individuals have to be alive without any severe comorbidity and without a history of initiating treatment; surgery, radiation, hormone therapy or chemotherapy. To avoid the need for additional investigations, sampling will be synchronized with timing for planned follow-up within the AS program for each individual. At baseline blood will be drawn for Stockholm3 analyses. The patient will be asked to fill out an informed consent. For each man the following data will be collected: Stockholm3 Risk Score, Stockholm3 Prostate Volume cut-off, total PSA, DRE status, MRI results (PI-RADS, optional, only if MRI is conducted within 3 months before biopsy), prostate volume, biopsy results (ISUP, cancer length, number of positive cores, total number of cores and stage). Main outcome measurement will be number of upgrading, i.e. number of detected ISUP ≥ 2 cancers.

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