1. Department of Medical Oncology and Cancer Cente, Shiga University of Medical Science, Otsu, Shiga 520‑2192, Japan
2. Department of Medical Oncology and Cancer Center, Shiga University of Medical Science, Otsu, Shiga 520‑2192, Japan
3. Department of Pathology, Kanagawa Cancer Center, Yokohama, Kanagawa 241‑8515, Japan
4. Department of Breast and Endocrine Surgery, Kanagawa Cancer Center, Yokohama, Kanagawa 241‑8515, Japan
5. Molecular Pathology and Genetics Division, Kanagawa Cancer Center, Research Institute, Yokohama, Kanagawa 241‑8515, Japan