ERBB2 and breast cancer: Women who died from breast cancer had a higher ER/PR/HER2 score than those in the other outcome groups in white women (mean ER/PR/HER2 score: –46.1, –78.8, –70.8 for three outcome groups, respectively; PF-test <0.0001), but not in black women (mean ER/PR/HER2 score: –54.3, –54.8, –62.7 for three outcome groups, respectively; PF-test = 0.35).