All three peptides share similar glycosylation pattern: O-glycosylated threonine with a galactosamine-galactose moiety, β-D-Gal-(1→3)-α-D-GalNAc-(1→) Thr, also found in Thomsen-Freidenreich antigens (TF-antigens) expressed on a surface of cancer cells (van den Akker et al., 1996; Gambert and Thiem, 1997; Glinsky et al., 2001; Siebert et al., 2002; Kunz, 2003). The gene discussed is TF; the disease is cancer.