RecruitingPhase 1Drug trialA First-In-Human Phase 1 Trial of T-Cell Membrane-Anchored Tumor Targeted Il12 (Attil12)- T-Cell Therapy in Subjects With Advanced/Metastatic Soft Tissue and Bone SarcomaTo find a recommended dose of attIL2-T cell therapy that can be given to patients with soft tissue or bone sarcomas and to see if it can help to control the disease.