In summary, we have shown that overexpression of HSPA2 and DNAJC20 in most cancer types correlates with favorable prognosis suggesting tumor suppressor activity of these gene products whereas high expression of HSP90AA1, CCT1, CCT2 and CCT6A correlates mainly with poor prognosis suggesting oncogenic activity of these gene products (Fig. 6B). This evidence concerns the gene HSP90AA1 and cancer.