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International Journal of Breast Cancer
Volume 2018, Article ID 4879406, 11 pages
https://doi.org/10.1155/2018/4879406
Clinical Study

Rate of Clinical Complete Response for 1 Year or More in Bone-Metastatic Breast Cancer after Comprehensive Treatments including Autologous Formalin-Fixed Tumor Vaccine

1Department of Surgery, Innoshima-Ishikai Hospital, Innoshima, Onomichi, Hiroshima 722-2211, Japan
2Cell-Medicine, Inc., 2-1-6 Sengen, Tsukuba, Ibaraki 305-0074, Japan

Correspondence should be addressed to Fumito Kuranishi; pj.en.nco.hcaeb@iakihsi

Received 28 September 2017; Revised 12 December 2017; Accepted 20 December 2017; Published 22 January 2018

Academic Editor: Mattia Capulli

Copyright © 2018 Fumito Kuranishi 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.

Abstract

Introduction. No effective treatment has been developed for bone-metastatic breast cancer. We found 3 cases with clinical complete response (cCR) of the bone metastasis and longer overall survival of the retrospectively examined cohort treated comprehensively including autologous formalin-fixed tumor vaccine (AFTV). Patients and Methods. AFTV was prepared individually for each patient from their own formalin-fixed and paraffin-embedded breast cancer tissues. Results. Three patients maintained cCR status of the bone metastasis for 17 months or more. Rate of cCR for 1 year or more appeared to be 15% (3/20) after comprehensive treatments including AFTV. The median overall survival time (60.0 months) and the 3- to 8-year survival rates after diagnosis of bone metastasis were greater than those of historical control cohorts in Japan (1988–2002) and in the nationwide population-based cohort study of Denmark (1999–2007). Conclusion. Bone-metastatic breast cancer may be curable after comprehensive treatments including AFTV, although larger scale clinical trial is required.