NKP-1339 is a novel GRP78 targeted ruthenium based anti-cancer compound which is intravenously administered. GRP78 is a key regulator of misfolded protein processing, which is unregulated in cancer cells. In nonclinical anti-tumor studies, NKP-1339 showed activity against many tumor types, including those resistant to platinum and other standard anti-cancer agents. This Phase I trial evaluates the safety, tolerability, maximum tolerated dose, pharmacokinetics, and pharmacodynamics of NKP-1339.