Upon qRT‐PCR analysis of ctnnb1 in cohort (N = 3 per group) resected primary trastuzumab‐resistant HCC1954 Her2+ tumours treated daily with 30 mg/kg aspirin, 120 mg/kg aspirin or vehicle showed a dose‐dependent increase in the expression of ctnnb1 (Figure 4B). Here, ERBB2 is linked to neoplasm.