Role of SNHG20/miR-6516-5p/SCGB2A1 axis in regulating PCa cell behaviors. (A) SCGB2A1 expression, (B) Cell proliferation, (C) Cell invasion, and (D) Cell apoptosis in PCa cell lines transfected with miR-6516-5p mimic, pSNHG20+ miR-6516-5p mimic, or pSCGB2A1+ miR-6516-5p mimic transfection. SNHG20: small nucleolar RNA host gene 20; SCGB2A1: secretoglobin family 2A member 1; PCa: prostate cancer; miR-6516-5p: microRNA-6516-5p.