MP43-06 COMPARING MRI/US FUSION TO STANDARD PROSTATE BIOPSY IN DETERMINING GRADE RECLASSIFICATION AT CONFIRMATORY BIOPSY IN A MULTI-INSTITUTIONAL ACTIVE SURVEILLANCE COHORT: A PENNSYLVANIA UROLOGY REGIONAL COLLABORATIVE (PURC) ANALYSIS. (1st May 2022) - Strauss, David; Reddy, Rohit; Loecher, Matthew; Syed, Kaynaat; Danella, John; Ginzburg, Serge; Belkoff, Laurence; Tomaszewski, Jeffrey; Trabulsi, Edouard; Singer, Eric; Jacobs, Bruce; Raman, Jay; et al.