TY - JOUR JF - World Journal of Urology PB - SPRINGER A1 - Olivier, J A1 - Kasivisvanathan, V A1 - Drumez, E A1 - Fantoni, J-C A1 - Leroy, X A1 - Puech, P A1 - Villers, A KW - Prostate cancer KW - Active surveillance KW - MRI KW - Repeat biopsy KW - PSA kinetics SP - 253 VL - 37 N1 - This version is the author accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions. EP - 259 UR - https://doi.org/10.1007/s00345-018-2420-6 ID - discovery10120112 N2 - Purpose: In patients considered for active surveillance (AS), the use of MRI and targeted biopsies (TB) at entry challenges the approach of routine ?per protocol? repeat systematic biopsies (SB) at 1 year. This pilot study aimed to assess whether an approach of performing repeat biopsies only if PSA kinetics are abnormal would be safe and sufficient to detect progression. / Methods: Prospective single-centre study of 149 patients on AS with low-risk PCa, a negative MRI at entry, followed for a minimum of 12 months between 01/2007 and 12/2015. Group 1 (n?=?78) patients had per-protocol 12-month repeat SB; group 2 (n?=?71) patients did not. Surveillance tests for tumour progression were for both groups: for cause SB and MRI-TB biopsies if PSA velocity (PSA-V)?>?0.75 ng/ml/year, or PSA doubling time (PSADT)?<?3 years. The main objectives are to compare the 2-year rates of tumour progression and AS discontinuation between groups. The secondary objectives are to estimate the diagnostic power of PSA-V and PSA-DT, to predict the risk of tumour progression. / Results: Overall, 21 out of 149 patients (14.1%) showed tumour progression, 17.1% for group 1 and 12.3% for group 2, and 31 (21.2%) discontinued AS at 2 years. There was no difference between the 2 groups (p?=?0.56). The area under the PSA-V and PSADT curves to predict tumour progression was 0.92 and 0.83, respectively. / Conclusions: We did not find any significant difference for progression and AS discontinuation rate between the 2 groups. The PSA kinetic seems accurate as a marker of tumour progression. These results support the conduct of a multi-centre prospective trial to confirm these findings. AV - public Y1 - 2019/02// TI - Low-risk prostate cancer selected for active surveillance with negative MRI at entry: can repeat biopsies at 1 year be avoided? A pilot study ER -