C1GALT1 and neoplasm: Interaction of M1 macrophages with C1GalT1 knockdown SW620shC1GT and HCT116F3shC1GT cancer cells was found to be associated with 62%% and 78%, respectively, higher macrophage-tumour cell phagocytotic events in comparison to interaction with SW620shCon and HCT116F3shCon cells (Fig. 6g, h).