Among tumors with ≥ 10% S100A8 + tumor epithelial cells, we found 4/268 (1%) Luminal A, 2/116 (2%) Luminal B, and 1/36 (3%) Luminal B (HER2+) tumors, whereas we found 8/28 (29%) HER2, 3/12 (25%) 5NP, and 12/35 (34%) BP tumors expressed S100A8 in ≥ 10% of tumor epithelial cells. This evidence concerns the gene S100A8 and neoplasm.