ABBV-461

The goal of this clinical trial is to evaluate CLBR001 and ABBV-461 as a treatment for patients with locally advanced or metastatic breast cancer. The goals are to establish the safety and efficacy of the combination therapy while establishing the optimal biologic doses.
Patients will be administered a single infusion of CLBR001 cells followed by cycles of ABBV-461 with regular assessments of safety and disease response to treatment.