Lumen Bioscience, a clinical-stage biotechnology company developing biologic drugs for highly prevalent diseases, today announced clinical development progress for LMN-201, an investigational orally delivered cocktail to treat and prevent C. difficile infection (CDI). Achievements include FDA clearance of a planned Phase 2 study of LMN-201 and successful completion of a Phase 1 first-in-human study, which validated drug delivery of enteric capsules into the gut.
LMN-201 combines four therapeutic proteins—manufactured and orally delivered in the edible microorganism spirulina—that work synergistically to neutralize both the C. difficile bacterium and the toxin that causes its virulence. LMN-201 is the world's first complex biologic cocktail to enter human clinical trials and represents a significant advance in the field of polypharmacology. Lumen recently published its pre-clinical data on LMN-201 on bioRxiv, pending peer review.
The Phase 2 trial (NCT05330182) will begin enrolling approximately 375 patients at sites across the United States. Physicians interested in participating are encouraged to contact Lumen's clinical operations team at trials@lumen.bio. The double-blind, placebo-controlled study will evaluate the efficacy of LMN-201 in participants recently diagnosed with CDI receiving standard-of-care antibiotics.
The primary goal of the Phase 1 study of LMN-201 recently completed in Australia was to confirm the dissolution kinetics of enteric capsules designed to release LMN-201's therapeutic proteins at or before the terminal ileum, where C. difficile becomes established in most patients. The trial met its primary endpoint, indicating the capsules can successfully deliver LMN-201 where needed. Initial analysis also confirmed the therapeutic proteins were bioactive upon release and demonstrated robust stability against gastrointestinal protease digestion over time, meeting the exploratory endpoints. Lumen plans to publish full study results in a peer-reviewed journal after complete data analysis.