ESR1 and breast cancer: While expression levels for SNED1 and LTBP3 were not significantly correlated across all mammary cancer sub-types (Figure 8, right panels), they were significantly correlated (p values of 0.0079 and 0.034, respectively) with poor prognosis for estrogen-receptor-negative and progesterone-receptor-negative (ER−/PR−) patients (Figure 8, left panels).