This is a Phase 1/2 open label, single arm study, and is divided into three phases: the single-agent dose-escalation phase Ia trial, the TL117 plus paclitaxel dose-escalation phase Ib trial, and the open label, multicenter phase 2 trial of TL117 plus paclitaxel.~Adverse events and dose limiting toxicities will be assessed from the first dose of study drug though day 28. When the maximum tolerated dose (MTD) of TL117 plus paclitaxel is determined, additional patients will be treated at the defined RP2D dose until occurrence of unacceptable toxicity, disease progression or withdrawal of consent or death.
The purpose of this study is to assess the safety, pharmacokinetic and efficacy of TL117 plus paclitaxel in patients with recurrent or metastatic head and neck cancer.