Tumour associated STn is associated with poor prognosis and resistance to chemotherapy in breast carcinomas [36], inhibition of DC maturation [37], DC apoptosis [38] and inhibition of NK activity [39], and the binding of MUC1(STn) to MGL may be in part responsible for some of the characteristics of STn expressing tumours. The gene discussed is MUC1; the disease is breast carcinoma.