Case Report: BRCA1 and BRCA2 loss in a young man with primary cutaneous extraskeletal osteosarcoma - Luo, Wen-Feng; Hou, Yu-Hang; Huang, Yu-Teng; Lai, Jun-Dong; Jiang, Hui-Shan; Wang, Wei-Liang (Frontiers in Oncology, 2025)