Mass spectrometric determination of MUC1-transfected prostate cancer cell line C4-2B4, revealed that the most prominent O-glycan on MUC1 was the non-sialylated and non-fucosylated core 2 oligosaccharide Galβ3/4GlcNAcβ6 [35]. This evidence concerns the gene MUC1 and prostate cancer.