AL58805

This phase 1b/2a study evaluates AL58805, an oral investigational drug that blocks PI3K and mTOR signaling, in combination with one of three anticancer treatments: AL8326 (veonetinib), eribulin, or fulvestrant. Adults with recurrent, advanced, or metastatic endometrial cancer, cervical cancer, soft tissue sarcoma, or breast cancer may be eligible after at least one prior standard treatment has failed or could not be tolerated and no effective standard treatment option remains.
In phase 1b, small groups of participants will receive different doses of AL58805 with a fixed dose of the partner treatment to identify a recommended combination dose based on dose-limiting side effects. In phase 2a, disease-specific groups will receive the selected combination dose to estimate the objective response rate and further evaluate duration of response, progression-free survival, overall survival, safety, pharmacokinetics, and exploratory tumor biomarkers. Protocol treatment may continue for up to 12 months, with continued treatment beyond 12 months possible for participants who remain clinically benefiting and receive investigator and sponsor approval.

This Phase I clinical trial is a dose-escalation, multicenter study in patients with advanced solid tumors. It includes tolerance studies of sequential multiple oral doses of AL58805 and pharmacokinetic studies of single and multiple doses, analyzing the tolerance range of multiple doses, observing the maximum tolerated dose (MTD) and dose-limiting toxicity (DLT) in solid tumor patients, and assessing the reversibility of toxicity and the relationship between toxicity and dose.