Since GCNT3 has been previously reported to possess tumor suppressor activities in colon cancer [27], it is up-regulated by several chemotherapeutic drugs and its overexpression correlates with a better outcome of colon cancer patients (González-Vallinas M et al., submitted for publication) we propose that GCNT3 may be a key molecule in the antitumor action of rosemary. The gene discussed is GCNT3; the disease is colonic neoplasm.