(26) who investigated the association between the BTLA SNPs: rs1844089, rs2705535, rs9288952, rs2633562, and rs2931761 it was noticed that among others rs9288952 was related to the risk of malignant breast cancer in Chinese women and its clinical features like tumor size, estrogen and progesterone receptor expression as well as C-erbB and P53 status. Here, PGR is linked to neoplasm.