RecruitingPhase 2Combination productPARP Inhibition, Stereotactic Body Radiotherapy and Immunotherapy for Metastatic or Advanced Sarcoma (PRIMA)The aim of this study is to evaluate the efficacy and safety of PARP Inhibition and programmed cell death protein-1 (PD-1) blockade immunotherapy with concurrent stereotactic body radiotherapy (SBRT) for metastatic or advanced bone and soft tissue sarcoma.