Reverse Triple Negative Immune Resistant Breast Cancer

This is a Phase II, open-label, three-arm parallel study evaluating the efficacy and safety of combined treatment (sodium cromoglicate, choline, efavirenz, SHR 1811, SHR 2102, mecapegfilgrastim) with immune checkpoint inhibitor or immune checkpoint inhibitor rechallenge(AK131) in mTNBC (triple negative breast cancer) patients who progressed during or following previous immune checkpoint inhibitors. The investigators have achieved a breakthrough in the FUTURE study with an ORR (objective response rate) reaching 52.6% in IM (immunomodulatory) subtype TNBC patients. Despite this, there are still some IM subtype patients resistant to immunotherapy. How to reverse immunotherapy resistance or how to increase the sensitivity of immunotherapy efficacy, has become an urgent clinical problem to be solved. The preclinical results of our center show that sodium cromoglicate, choline, efavirenz, SHR 1811, SHR 2102, mecapegfilgrastim, AK131, theophylline play a potentially important role in regulating the tumor immune microenvironment and can inhibit the growth of tumors in mice, and enhance the efficacy of PD-1 inhibitors in mice. Based on preclinical studies, the investigators designed this study to enroll mTNBC patients who have progressed during or following immunotherapy, and to explore the efficacy of these drugs at a clinical level, providing new strategies of combined treatment for TNBC patients.