Should pathologists and clinicians continue to consider Grade Group 1 (Gleason score ≤6) prostate cancer as a true carcinoma? Let's hear from patient advocates

To the Editor, The current grading system for prostate cancer (PCA) includes 5 Grade Groups (GG): GG1 (Gleason score ≤ 6); GG2 (Gleason score 3+4); GG3 (Gleason score 4+3); GG4 (Gleason score 4+4; or 3+5; or 5+3); GG5 (Gleason scores 4+5/5+4/5+5). The GG system is one of the most important predictors of outcome in PCA patients...