KLK3 and carcinoma: Significant associations with PSA recurrence were seen in Gleason 3 + 3 = 6 (p = 0.061), Gleason 3 + 4 (p = 0.0021) and 4 + 3 carcinomas (p = 0.0494) but not in tumors with a Gleason ≥4 + 4 (Fig. 6a).