ProAgio in Combination With Gemcitabine in Patients With Metastatic Triple Negative Breast Cancer

This is a single-arm, Phase I/II study, designed to evaluate the safety and efficacy of the combination of ProAgio with gemcitabine in patients with previously treated, metastatic triple negative breast cancer. Dose escalation will proceed using the Bayesian Optimal Interval (BOIN) design, with a target toxicity rate of 0.25, a maximum sample size of 20, and a cohort size of 2. There are four dose levels considered in the dose escalation phase, and we start at the lowest dose level (Dose Level 1).