NOTCH1 and neoplasm: Considering the median of the relative expression of NOTCH1 with regard to selected characteristics (Supplementary Figure S4), high mRNA expression was associated with a negative steroid receptor status: 63.5% of the tumours with high NOTCH1 had a negative ER status (40/63, p = 0.020) and 63.2% had a negative HR status (36/57, p = 0.032).