SNIPR Biome has dosed the first patient in its Phase 1b trial of SNIPR001, a CRISPR-armed phage therapy targeting fluoroquinolone-resistant E. coli in hematological cancer patients undergoing stem cell transplantation.
The therapy combines four engineered bacteriophages that specifically target drug-resistant E. coli in the gut microbiome while preserving beneficial bacteria, addressing a critical unmet need in cancer care.
The randomized, double-blind, placebo-controlled trial will evaluate safety, tolerability, and efficacy in 24 patients across eight US centers, building on promising Phase 1a safety data in healthy volunteers.
E. coli causes 25-30% of bacteremia cases in neutropenic hematological cancer patients, with up to 65% showing fluoroquinolone resistance, making this precision approach potentially transformative for vulnerable patient populations.