Inhaled mRNA Immunotherapy for Patients With Advanced Lung Cancer or Pulmonary Metastatic Solid Tumors (BMD-PLAT)

This is an open-label, single-arm, phase I master platform clinical trial designed to assess the safety, tolerability, pharmacokinetic profiles and preliminary anti-tumor activity of multiple investigational inhaled in-vivo mRNA multi-target immunotherapy candidates in adult subjects diagnosed with unresectable locally advanced or metastatic solid tumors.

The study adopts the standard 3+3 dose-escalation design for each individual mRNA product. Eligible participants will receive study drug via pulmonary inhalation on predefined treatment cycles with gradual dose increment across sequential cohorts to identify the maximum tolerated dose (MTD) and recommended phase 2 dose (RP2D). After completion of dose escalation, an optional expansion cohort at RP2D will be enrolled to further characterize safety and preliminary anti-tumor efficacy.

All enrolled patients will undergo regular safety monitoring including adverse event recording, laboratory examinations, pulmonary function test and radiological tumor assessment per protocol schedule. The primary study endpoints focus on treatment-related adverse events and MTD determination; secondary endpoints include objective response rate, disease control rate, duration of response as well as pharmacokinetic parameters of inhaled mRNA agents. Subjects will continue assigned study treatment until confirmed disease progression, unacceptable toxicity, withdrawal of consent or study closure.