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    Ryuma Tokunaga

    TitlePostdoctoral Scholar Visiting Fellow
    SchoolKeck School of Medicine of USC
    DepartmentCancer Center
    Address1450 BIGGY STREET
    Health Sciences Campus
    Los Angeles California 90033
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      Collapse Bibliographic 
      Collapse Publications
      Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help.
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      1. Puccini A, Berger MD, Naseem M, Tokunaga R, Battaglin F, Cao S, Hanna DL, McSkane M, Soni S, Zhang W, Lenz HJ. Colorectal cancer: epigenetic alterations and their clinical implications. Biochim Biophys Acta. 2017 Sep 20; 1868(2):439-448. PMID: 28939182.
        View in: PubMed
      2. Miyata T, Yamashita YI, Higashi T, Taki K, Izumi D, Kosumi K, Tokunaga R, Nakagawa S, Okabe H, Imai K, Hashimoto D, Chikamoto A, Baba H. The Prognostic Impact of Controlling Nutritional Status (CONUT) in Intrahepatic Cholangiocarcinoma Following Curative Hepatectomy: A Retrospective Single Institution Study. World J Surg. 2017 Sep 08. PMID: 28887635.
        View in: PubMed
      3. Kuroda D, Sawayama H, Kurashige J, Iwatsuki M, Eto T, Tokunaga R, Kitano Y, Yamamura K, Ouchi M, Nakamura K, Baba Y, Sakamoto Y, Yamashita Y, Yoshida N, Chikamoto A, Baba H. Controlling Nutritional Status (CONUT) score is a prognostic marker for gastric cancer patients after curative resection. Gastric Cancer. 2017 Jun 27. PMID: 28656485.
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      4. Tokunaga R, Sakamoto Y, Nakagawa S, Izumi D, Kosumi K, Taki K, Higashi T, Miyata T, Miyamoto Y, Yoshida N, Baba H. Comparison of systemic inflammatory and nutritional scores in colorectal cancer patients who underwent potentially curative resection. Int J Clin Oncol. 2017 Aug; 22(4):740-748. PMID: 28213742.
        View in: PubMed
      5. Tokunaga R, Sakamoto Y, Nakagawa S, Yoshida N, Baba H. The utility of tumor marker combination, including serum P53 antibody, in colorectal cancer treatment. Surg Today. 2017 May; 47(5):636-642. PMID: 28062920.
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      6. Tokunaga R, Sakamoto Y, Nakagawa S, Ohuchi M, Izumi D, Kosumi K, Taki K, Higashi T, Miyamoto Y, Yoshida N, Oki E, Watanabe M, Baba H. CONUT: a novel independent predictive score for colorectal cancer patients undergoing potentially curative resection. Int J Colorectal Dis. 2017 Jan; 32(1):99-106. PMID: 27726014.
        View in: PubMed
      7. Akiyama T, Miyamoto Y, Sakamoto Y, Tokunaga R, Kosumi K, Shigaki H, Kurashige J, Iwatsuki M, Baba Y, Yoshida N, Baba H. Cancer-related multiple brain infarctions caused by Trousseau syndrome in a patient with metastatic colon cancer: a case report. Surg Case Rep. 2016 Dec; 2(1):91. PMID: 27595586; PMCID: PMC5011467.
      8. Yoshida N, Baba Y, Shigaki H, Harada K, Iwatsuki M, Kurashige J, Sakamoto Y, Miyamoto Y, Ishimoto T, Kosumi K, Tokunaga R, Imamura Y, Ida S, Hiyoshi Y, Watanabe M, Baba H. Preoperative Nutritional Assessment by Controlling Nutritional Status (CONUT) is Useful to estimate Postoperative Morbidity After Esophagectomy for Esophageal Cancer. World J Surg. 2016 Aug; 40(8):1910-7. PMID: 27220507.
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      9. Harada K, Baba Y, Shigaki H, Ishimoto T, Miyake K, Kosumi K, Tokunaga R, Izumi D, Ohuchi M, Nakamura K, Kiyozumi Y, Kurashige J, Iwatsuki M, Miyamoto Y, Sakamoto Y, Yoshida N, Watanabe M, Baba H. Prognostic and clinical impact of PIK3CA mutation in gastric cancer: pyrosequencing technology and literature review. BMC Cancer. 2016 Jul 07; 16:400. PMID: 27388016; PMCID: PMC4936296.
      10. Yoshida N, Tamaoki Y, Baba Y, Sakamoto Y, Miyamoto Y, Iwatsuki M, Shono T, Miyamoto H, Imuta M, Kurashige J, Sawayama H, Tokunaga R, Watanabe M, Sasaki Y, Yamashita Y, Baba H. Incidence and risk factors of synchronous colorectal cancer in patients with esophageal cancer: an analysis of 480 consecutive colonoscopies before surgery. Int J Clin Oncol. 2016 Dec; 21(6):1079-1084. PMID: 27368336.
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      11. Yoshida N, Baba Y, Shigaki H, Harada K, Iwatsuki M, Sakamoto Y, Miyamoto Y, Kurashige J, Kosumi K, Tokunaga R, Watanabe M, Baba H. Risk factors of early recurrence within 6 months after esophagectomy following neoadjuvant chemotherapy for resectable advanced esophageal squamous cell carcinoma. Int J Clin Oncol. 2016 Dec; 21(6):1071-1078. PMID: 27255393.
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      12. Miyamoto Y, Akiyama T, Sakamoto Y, Tokunaga R, Ohuchi M, Shigaki H, Kurashige J, Iwatsuki M, Baba Y, Yoshida N, Baba H. Omental flap after pelvic exenteration for pelvic cancer. Surg Today. 2016 Dec; 46(12):1471-1475. PMID: 27226018.
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      13. Tokunaga R, Imamura Y, Nakamura K, Ishimoto T, Nakagawa S, Miyake K, Nakaji Y, Tsuda Y, Iwatsuki M, Baba Y, Sakamoto Y, Miyamoto Y, Saeki H, Yoshida N, Oki E, Watanabe M, Oda Y, Bass AJ, Maehara Y, Baba H. Fibroblast growth factor receptor 2 expression, but not its genetic amplification, is associated with tumor growth and worse survival in esophagogastric junction adenocarcinoma. Oncotarget. 2016 Apr 12; 7(15):19748-61. PMID: 26933914; PMCID: PMC4991416.
      14. Sakamoto Y, Tokunaga R, Miyamoto Y, Ohuchi M, Nakamura K, Kosumi K, Harada K, Shigaki H, Kurashige J, Iwatsuki M, Baba Y, Yoshida N, Baba H. Retroileal colorectal anastomosis after extended left colectomy: application for laparoscopic surgery. Surg Today. 2016 Dec; 46(12):1476-1478. PMID: 26892331.
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      15. Kosumi K, Baba Y, Ishimoto T, Harada K, Nakamura K, Ohuchi M, Kiyozumi Y, Izumi D, Tokunaga R, Taki K, Higashi T, Miyata T, Shigaki H, Kurashige J, Hiyoshi Y, Iwatsuki M, Iwagami S, Sakamoto Y, Miyamoto Y, Yoshida N, Oki E, Watanabe M, Baba H. APOBEC3B is an enzymatic source of molecular alterations in esophageal squamous cell carcinoma. Med Oncol. 2016 Mar; 33(3):26. PMID: 26880326.
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      16. Miyamoto Y, Sakamoto Y, Ohuchi M, Tokunaga R, Shigaki H, Kurashige J, Iwatsuki M, Baba Y, Yoshida N, Watanabe M, Baba H. Orbital Apex Syndrome Caused by Invasive Aspergillosis as an Adverse Effect of Systemic Chemotherapy for Metastatic Colorectal Cancer: a Case Report. Anticancer Res. 2016 Feb; 36(2):821-3. PMID: 26851046.
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      17. Yoshida N, Baba Y, Hiyoshi Y, Shigaki H, Kurashige J, Sakamoto Y, Miyamoto Y, Iwatsuki M, Ishimoto T, Kosumi K, Sugihara H, Harada K, Tokunaga R, Izumi D, Watanabe M, Baba H. Duration of Smoking Cessation and Postoperative Morbidity After Esophagectomy for Esophageal Cancer: How Long Should Patients Stop Smoking Before Surgery? World J Surg. 2016 Jan; 40(1):142-7. PMID: 26330238.
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      18. Yoshida N, Baba Y, Shigaki H, Shiraishi S, Harada K, Watanabe M, Iwatsuki M, Kurashige J, Sakamoto Y, Miyamoto Y, Ishimoto T, Kosumi K, Tokunaga R, Yamashita Y, Baba H. Effect of Esophagus Position on Surgical Difficulty and Postoperative Morbidities After Thoracoscopic Esophagectomy. Semin Thorac Cardiovasc Surg. 2016; 28(1):172-9. PMID: 27568157.
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      19. Izumi D, Yoshida N, Watanabe M, Shiraishi S, Ishimoto T, Kosumi K, Tokunaga R, Taki K, Higashi T, Harada K, Miyata T, Ida S, Imamura Y, Iwagami S, Baba Y, Sakamoto Y, Miyamoto Y, Yamashita Y, Baba H. Tumor/normal esophagus ratio in (18)F-fluorodeoxyglucose positron emission tomography/computed tomography for response and prognosis stratification after neoadjuvant chemotherapy for esophageal squamous cell carcinoma. J Gastroenterol. 2016 Aug; 51(8):788-95. PMID: 26671045.
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      20. Tokunaga R, Sakamoto Y, Nakagawa S, Miyamoto Y, Yoshida N, Oki E, Watanabe M, Baba H. Prognostic Nutritional Index Predicts Severe Complications, Recurrence, and Poor Prognosis in Patients With Colorectal Cancer Undergoing Primary Tumor Resection. Dis Colon Rectum. 2015 Nov; 58(11):1048-57. PMID: 26445177.
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      21. Tokunaga R, Sakamoto Y, Nakagawa S, Miyake K, Izumi D, Kosumi K, Taki K, Higashi T, Imamura Y, Ishimoto T, Iwatsuki M, Baba Y, Miyamoto Y, Yoshida N, Oki E, Watanabe M, Baba H. The Prognostic Significance of Histone Lysine Demethylase JMJD3/KDM6B in Colorectal Cancer. Ann Surg Oncol. 2016 Feb; 23(2):678-85. PMID: 26416711.
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      22. Harada K, Baba Y, Ishimoto T, Kosumi K, Tokunaga R, Izumi D, Ohuchi M, Nakamura K, Kiyozumi Y, Kurashige J, Iwagami S, Miyamoto Y, Sakamoto Y, Yoshida N, Oki E, Watanabe M, Baba H. Suppressor microRNA-145 Is Epigenetically Regulated by Promoter Hypermethylation in Esophageal Squamous Cell Carcinoma. Anticancer Res. 2015 Sep; 35(9):4617-24. PMID: 26254350.
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      23. Tokunaga R, Imamura Y, Nakamura K, Uchihara T, Ishimoto T, Nakagawa S, Iwatsuki M, Baba Y, Sakamoto Y, Miyamoto Y, Yoshida N, Oyama S, Shono T, Naoe H, Saeki H, Oki E, Watanabe M, Sasaki Y, Maehara Y, Baba H. Carbohydrate antigen 19-9 is a useful prognostic marker in esophagogastric junction adenocarcinoma. Cancer Med. 2015 Nov; 4(11):1659-66. PMID: 26310928.
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      24. Higashi T, Hayashi H, Kaida T, Arima K, Takeyama H, Taki K, Izumi D, Tokunaga R, Kosumi K, Nakagawa S, Okabe H, Imai K, Nitta H, Hashimoto D, Chikamoto A, Beppu T, Baba H. Prognostic Impact of Visceral Fat Amount and Branched-Chain Amino Acids (BCAA) in Hepatocellular Carcinoma. Ann Surg Oncol. 2015 Dec; 22 Suppl 3:S1041-7. PMID: 26305023.
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      25. Miyamoto Y, Baba Y, Sakamoto Y, Ohuchi M, Tokunaga R, Kurashige J, Hiyoshi Y, Iwagami S, Yoshida N, Watanabe M, Baba H. Negative Impact of Skeletal Muscle Loss after Systemic Chemotherapy in Patients with Unresectable Colorectal Cancer. PLoS One. 2015; 10(6):e0129742. PMID: 26069972; PMCID: PMC4466562.
      26. Kosumi K, Baba Y, Ishimoto T, Harada K, Nakamura K, Ohuchi M, Kiyozumi Y, Izumi D, Tokunaga R, Taki K, Higashi T, Miyata T, Kurashige J, Hiyoshi Y, Iwagami S, Sakamoto Y, Miyamoto Y, Yoshida N, Watanabe M, Baba H. Neutrophil/lymphocyte ratio predicts the prognosis in esophageal squamous cell carcinoma patients. Surg Today. 2016 Apr; 46(4):405-13. PMID: 26036223.
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      27. Kosumi K, Baba Y, Ishimoto T, Harada K, Miyake K, Izumi D, Tokunaga R, Murata A, Eto K, Sugihara H, Shigaki H, Iwagami S, Sakamoto Y, Miyamoto Y, Yoshida N, Watanabe M, Komohara Y, Takeya M, Baba H. Relationship between LINE-1 hypomethylation and Helicobacter pylori infection in gastric mucosae. Med Oncol. 2015 Apr; 32(4):117. PMID: 25782871.
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      28. Harada K, Baba Y, Ishimoto T, Kosumi K, Tokunaga R, Izumi D, Ida S, Imamura Y, Iwagami S, Miyamoto Y, Sakamoto Y, Yoshida N, Watanabe M, Baba H. Low Visceral Fat Content is Associated with Poor Prognosis in a Database of 507 Upper Gastrointestinal Cancers. Ann Surg Oncol. 2015 Nov; 22(12):3946-53. PMID: 25712800.
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      29. Miyamoto Y, Baba Y, Sakamoto Y, Ohuchi M, Tokunaga R, Kurashige J, Hiyoshi Y, Iwagami S, Yoshida N, Yoshida M, Watanabe M, Baba H. Sarcopenia is a Negative Prognostic Factor After Curative Resection of Colorectal Cancer. Ann Surg Oncol. 2015 Aug; 22(8):2663-8. PMID: 25564158.
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      30. Izumi D, Ishimoto T, Yoshida N, Nakamura K, Kosumi K, Tokunaga R, Sugihara H, Sawayama H, Karashima R, Imamura Y, Ida S, Hiyoshi Y, Iwagami S, Baba Y, Sakamoto Y, Miyamoto Y, Watanabe M, Baba H. A clinicopathological analysis of primary mucosal malignant melanoma. Surg Today. 2015 Jul; 45(7):886-91. PMID: 25297929.
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      31. Nakagawa S, Sakamoto Y, Okabe H, Hayashi H, Hashimoto D, Yokoyama N, Tokunaga R, Sakamoto K, Kuroki H, Mima K, Beppu T, Baba H. Epigenetic therapy with the histone methyltransferase EZH2 inhibitor 3-deazaneplanocin A inhibits the growth of cholangiocarcinoma cells. Oncol Rep. 2014 Feb; 31(2):983-8. PMID: 24337160.
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      32. Tokunaga R, Hayashi H, Masuda T, Mima K, Chikamoto A, Tanaka H, Horino K, Ishiko T, Takamori H, Beppu T, Baba H. Tumor compression-induced portal obstruction and selective transarterial chemoembolization increase functional liver volume in the unobstructed area, facilitating successful resection of a large HCC. Int Surg. 2013 Oct-Dec; 98(4):388-91. PMID: 24229029; PMCID: PMC3829069.