The following lectins were used to screen tumor-related glycans: Laburnum anagyroides bark agglutinin (LABA); Perca fluviatilis agglutinin (PFA); Peanut agglutinin (PNA); Helix pomatia agglutinin (HPA); Sambucus nigra agglutinin (SNA); Galanthus nivalis agglutinin (GNA); Narcissus poeticus lectin (NPL); Lens culinaris agglutinin (LCA); wheat germ agglutinin (WGA). This evidence concerns the gene NPL and neoplasm.