Analysis including certain clinical factors showed correlation between BTLA SNPs and tumor size (rs1844089), estrogen receptor (ER) status (rs1844089, rs2633562, rs9288952), progesterone receptor (PR) status (rs2705535, rs9288952), C-erbB-2 status (rs2705535), and P53 status (rs1844089, rs2633562). This evidence concerns the gene BTLA and neoplasm.