Doxorubicin, a chemotherapy, is currently considered standard-of-care treatment for most advanced soft tissue sarcomas. This study will assess the safety and efficacy of combining APX005M, a novel immunomodulatory drug, together with standard of care doxorubicin, for the treatment of patients with advanced soft tissue sarcoma. APX005M is an agonistic monoclonal antibody targeting the CD40 receptor and may have favorable effects on certain types of immune cells in sarcoma tumors, particularly macrophages.~The primary objective is to determine the objective response rate. Secondary objectives include further evaluation of safety and efficacy. A subset of patients will undergo tumor biopsies at baseline and while on study treatment to help understand how the drug combination works and to evaluate how the composition of immune cells in the tumor changes after the treatment.
This phase II clinical trial will evaluate the safety and efficacy of adding APX005M (a CD40 agonistic monoclonal antibody) to doxorubicin for the treatment of patients with advanced soft tissue sarcoma. The investigators believe that doxorubicin, which is currently the standard of care for most advanced sarcomas, could work better when combined with APX005M, which is a type of immunotherapy.