A Phase 12a Study Evaluating the Safety and Initial Effectiveness of DB-1303BNT323 Given by IV in Patients with Advanced or Metastatic HER2-Positive Solid Tumors

What this Trial Is About

Researchers are evaluating the safety and tolerability of DB-1303BNT323 in adults with advanced or metastatic solid tumors that express HER2. This Phase 12a trial focuses on patients with tumors that are advanced, unresectable, recurrent, or metastatic and have limited or no standard treatment options. The study aims to identify the best dose and explore early signs of effectiveness in a variety of HER2-expressing cancers. The trial has two parts an initial dose-escalation phase using an accelerated titration followed by a classic 33 design to find the maximum tolerated dose MTD or recommended Phase 2 dose RP2D, and a dose-expansion phase to further assess safety, tolerability, and potential effects at the established dose. Participants receive DB-1303BNT323 by intravenous infusion once every three weeks Q3W at various dose levels. Some groups are randomized to receive different dose levels or combinations with other drugs like Pertuzumab, Ritonavir, or Itraconazole to study drug interactions and responses. During the study, participants will have regular assessments including monitoring for dose-limiting toxicities, adverse events, and serious adverse events using standard criteria up to about one year after treatment. Researchers will also evaluate tumor responses using RECIST 1.1 criteria and collect pharmacokinetic and pharmacodynamic data. Other evaluations include heart function tests, organ function, and overall health status. The study duration varies per participant, with follow-up visits extending up to one year post-treatment to monitor safety and treatment effects.

A Phase 1/2a Study of DB-1303/BNT323 in Advanced/Metastatic Solid Tumors