The clinicopathologic data were not significant between AR+ (positive nuclear or cytoplasmic staining) and AR− (negative staining) tumor sections (p > 0.05), apart from higher-circulating monocytes (p = 0.02) and aspartate transaminase (AST) (p = 0.01) values in dogs with AR− tumors (Tables S1–S4), but these were not above the reference interval. This evidence concerns the gene AR and neoplasm.