Role of bevacizumab in neoadjuvant chemotherapy and its influence on microvessel density in rectal cancer

Verfasser / Beitragende:
[Atsuki Arimoto, Keisuke Uehara, Toyonori Tsuzuki, Toshisada Aiba, Tomoki Ebata, Masato Nagino]
Ort, Verlag, Jahr:
2015
Enthalten in:
International Journal of Clinical Oncology, 20/5(2015-10-01), 935-942
Format:
Artikel (online)
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024 7 0 |a 10.1007/s10147-015-0818-3  |2 doi 
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245 0 0 |a Role of bevacizumab in neoadjuvant chemotherapy and its influence on microvessel density in rectal cancer  |h [Elektronische Daten]  |c [Atsuki Arimoto, Keisuke Uehara, Toyonori Tsuzuki, Toshisada Aiba, Tomoki Ebata, Masato Nagino] 
520 3 |a Background: The role of bevacizumab (Bev) in neoadjuvant chemotherapy (NAC) without radiotherapy for rectal cancer has not been fully discussed. The purpose of this study is to assess the clinicopathological benefit of Bev in NAC for rectal cancer and to investigate its influence on microvessel status in cancerous tissue. Methods: Data on 47 patients with rectal cancer, who received NAC with or without Bev between August 2008 and November 2012, were analyzed retrospectively. The objective response was evaluated using the maximum tumor diameter. Tumor regression grade 3/4 was classified as a pathological response. Results: Thirty-one patients (66%) received NAC that included Bev and the other 16 patients were treated without Bev. The objective response rate was significantly higher in the Bev group than in the non-Bev group (64.5 vs. 25.0%, p=0.015). The rate of pathological response was much higher in the Bev group (41.9%) than in the non-Bev group (12.5%), but did not reach significant difference (p=0.052). Microvessel density (MVD) in the resected cancerous tissue was significantly lower in the Bev group than in the non-Bev group. Conclusions: We have confirmed that objective and pathological responses were better in patients treated with NAC that included Bev than in those who received NAC without Bev. Additionally, MVD in tumor tissues was inhibited in the patients treated with Bev. To investigate the impact of Bev in NAC on long-term survival, further follow-up is required. 
540 |a Japan Society of Clinical Oncology, 2015 
690 7 |a Bevacizumab  |2 nationallicence 
690 7 |a Neoadjuvant chemotherapy  |2 nationallicence 
690 7 |a Microvessel density  |2 nationallicence 
690 7 |a Rectal cancer  |2 nationallicence 
700 1 |a Arimoto  |D Atsuki  |u Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, 466-8550, Nagoya, Japan  |4 aut 
700 1 |a Uehara  |D Keisuke  |u Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, 466-8550, Nagoya, Japan  |4 aut 
700 1 |a Tsuzuki  |D Toyonori  |u Department of Pathology, Nagoya Daini Red Cross Hospital, 2-9 Myoken-cho, Showa-ku, 466-8650, Nagoya, Japan  |4 aut 
700 1 |a Aiba  |D Toshisada  |u Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, 466-8550, Nagoya, Japan  |4 aut 
700 1 |a Ebata  |D Tomoki  |u Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, 466-8550, Nagoya, Japan  |4 aut 
700 1 |a Nagino  |D Masato  |u Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, 466-8550, Nagoya, Japan  |4 aut 
773 0 |t International Journal of Clinical Oncology  |d Springer Japan  |g 20/5(2015-10-01), 935-942  |x 1341-9625  |q 20:5<935  |1 2015  |2 20  |o 10147 
856 4 0 |u https://doi.org/10.1007/s10147-015-0818-3  |q text/html  |z Onlinezugriff via DOI 
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900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
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950 |B NATIONALLICENCE  |P 700  |E 1-  |a Arimoto  |D Atsuki  |u Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, 466-8550, Nagoya, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Uehara  |D Keisuke  |u Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, 466-8550, Nagoya, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Tsuzuki  |D Toyonori  |u Department of Pathology, Nagoya Daini Red Cross Hospital, 2-9 Myoken-cho, Showa-ku, 466-8650, Nagoya, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Aiba  |D Toshisada  |u Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, 466-8550, Nagoya, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Ebata  |D Tomoki  |u Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, 466-8550, Nagoya, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Nagino  |D Masato  |u Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, 466-8550, Nagoya, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t International Journal of Clinical Oncology  |d Springer Japan  |g 20/5(2015-10-01), 935-942  |x 1341-9625  |q 20:5<935  |1 2015  |2 20  |o 10147