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Case Reports in Gastrointestinal Medicine
Volume 2015, Article ID 132030, 6 pages
http://dx.doi.org/10.1155/2015/132030
Case Report

Loss of HER2 Positivity after Trastuzumab in HER2-Positive Gastric Cancer: Is Change in HER2 Status Significantly Frequent?

1Department of Gastroenterology, Otaru General Hospital, 1-2-1 Wakamatu, Otaru 047-8550, Japan
2Department of Surgery, Otaru General Hospital, 1-2-1 Wakamatu, Otaru 047-8550, Japan
3Department of Gastroenterology, Rheumatology, and Clinical Immunology, Sapporo Medical University, S1W17, Chuo-ku, Sapporo 060-8556, Japan
4Department of Laboratory Medicine, Otaru General Hospital, 1-2-1 Wakamatu, Otaru 047-8550, Japan

Received 22 October 2014; Accepted 10 March 2015

Academic Editor: Olga I. Giouleme

Copyright © 2015 Yu Ishimine et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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