Among them, there are 14 identical metabolic pathways, namely: ABC transporters; biosynthesis of amino acids; pyrimidine metabolism; neuroactive ligand-receptor interaction; aminoacyl-tRNA biosynthesis; protein digestion and absorption; galactose metabolism; vitamin digestion and absorption; central carbon metabolism in cancer; mineral absorption; alanine, aspartate and glutamate metabolism; arginine biosynthesis; synaptic vesicle cycle; and prolactin signaling pathway. The gene discussed is ABCG2; the disease is cancer.