Tumours were grouped into four molecular subtype as in the previous study [29], including ERBB2+ (ER-, PR-, HER2+), triple negative (ER-, PR-, HER2-), Luminal-A (ER+ and/or PR+, HER2-), and Luminal-B (ER+ and/or PR+, HER2+). Here, ERBB2 is linked to neoplasm.