ERBB2 and aneurysmal bone cyst: The sub-analysis of luminal HER2-negative aBC (n = 26) showed that although the higher levels of sICAM-1 and sTNF-R2 above the median, as well as sICAM-1 standardised levels, lost a statistical significance, yet kept a predictive direction for PFS (HR: 1.30, 1.80, 1.09, respectively).