"Journal of Clinical Oncology" (CA: ACancerJournalforClinicians, CA Cancer J Clin) is a professional academic journal sponsored by the American Cancer Society and is the medical journal with the highest impact factor in the world. In the 2013 magazine impact factor rankings released by SCI Magazine, CA Cancer J Clin ranked first among medical magazines with an impact factor of 153.459, far higher than the second-ranked New England Journal of Medicine (New England Journal of Medicine). Med, impact factor: 50.017).