While this may be due to the low event rate in our cohort, it is also possible that CT antigen expression has a neutral effect on breast cancer prognosis as also reported for ovarian cancer.19 Nevertheless, the NY-ESO-1 positive patients tended to have higher tumor infiltration by CD8+ T cells, and those with NY-ESO-1 antibody trended towards increased density of CD8+ T cells, indicating a potential link between NY-ESO-1 immunity and infiltration of TNBC by T cells. This evidence concerns the gene CD8A and ovarian cancer.