High MX1 protein expression was significantly associated with a large tumour size (p = 0.011), high histological grade, poor NPI, hormonal receptor negativity (ER− and PR−) (all p < 0.0001), younger age at diagnosis (p = 0.047) and premenopausal status (p = 0.040, Table 1). Here, MX1 is linked to neoplasm.