HSP90AB1 and breast neoplasm: We therefore next examined the co-expression correlation between HSPs and co-chaperones including HSP90 family (HSP90AA1, HSP90AB1), HSP70 family (HSPA1A, HSPA1B, HSPA8) and BAG family (BAG1, BAG2, BAG3) among 960 breast tumor samples registered in the Cancer Genome Atlas (TCGA).