1. Division of Rare Cancer ResearchNational Cancer Center Research Institute 5‐1‐1 Tsukiji Chuo‐ku Tokyo 104‐0045 Japan
2. Department of Innovative Seeds EvaluationNational Cancer Center Research Institute 5‐1‐1 Tsukiji Chuo‐ku Tokyo 104‐0045 Japan
3. Central Animal DivisionNational Cancer Center Research Institute 5‐1‐1 Tsukiji Chuo‐ku Tokyo 104‐0045 Japan
4. Pathology and Clinical Laboratory DivisionNational Cancer Center Hospital 5‐1‐1 Tsukiji Chuo‐ku Tokyo 104‐0045 Japan
5. Division of Musculoskeletal OncologyNational Cancer Center Hospital 5‐1‐1 Tsukiji Chuo‐ku Tokyo 104‐0045 Japan
6. Department of Clinical ProteomicsNational Cancer Center Research Institute 5‐1‐1 Tsukiji Chuo‐ku Tokyo 104‐0045 Japan