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Clinical Trial Summary

This is an open-label, non-randomized, multicenter, translational Phase 1/2 dose-escalation and expansion study designed to determine the safety, tolerability, pharmacokinetics, pharmacodynamics, and preliminary anti-tumor activity of RSO-021 after intrapleural (IP) administration in patients with malignant pleural effusion (MPE) (non-mesothelioma) and MPE from mesothelioma.


Clinical Trial Description

This is a Phase 1/2, open-label, multi-center study whose primary Phase 1 stage objective is to determine the maximum tolerated dose (MTD) or recommended phase 2 dose (RP2D) of RSO-021 (thiostrepton), a naturally-occurring, sulfur-rich, cyclic oligopeptide antibiotic of the thiopeptide class, in patients with MPE from any solid tumor, including mesothelioma. In the Phase 2 stage, once the RP2D has been identified, the antitumor activity of RSO-021 will be evaluated in four recruitment arms; (1) in patients with MPE (non-mesothelioma), (2) in patients with MPE (non-mesothelioma) in combination with paclitaxel, (3) in patients with MPE from mesothelioma after first-line SoC, and (4) in patients with MPE from mesothelioma who have a 'window of opportunity' for treatment prior to first-line systemic therapy. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05278975
Study type Interventional
Source RS Oncology LLC
Contact George Naumov, PhD
Phone (617) 835-5633
Email MITOPE@rsoncology.com
Status Recruiting
Phase Phase 1/Phase 2
Start date March 31, 2022
Completion date April 1, 2025

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