NR1H3 and triple-negative breast carcinoma: The results of single-cell RNA sequencing suggested that triple-negative breast cancer (TNBC) tumor-resident immune cells showed a high expression of LXRα, and Seurat cell-cluster analysis showed that LXRα expression was most induced in the “myeloid cell” cluster, suggesting that the upregulation of LXRα may be associated with tumor cell–immune cell interactions in TNBC.