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Armata Pharmaceuticals to Present Data at ISSSI 2026 Showing Defined Genetic Diversity in AP-SA02 May Enhance Killing of Certain Staphylococcus aureus Clinical Isolates

$ARMPPress releaseSep 21, 2026, 7:00 AM ETRead the release

Armata Pharmaceuticals will present data at ISSSI 2026 showing that defined, controlled genetic diversity in its lead bacteriophage cocktail AP-SA02 may enhance killing of certain Staphylococcus aureus clinical isolates, including MRSA and MSSA. Genomic analyses identified a reproducible profile of genetic variants across clinical drug product lots, and the company deliberately maintains this diversity through controlled manufacturing as an intentional product attribute. The in vitro findings complement the Phase 2a diSArm study, in which 100% of evaluable AP-SA02-treated participants achieved a complete clinical response, and support the planned Phase 3 superiority study in complicated S.

Key figures

Drug Name
AP-SA02
Phase Of Trial
Phase 2a (diSArm); Phase 3 planned
Conference
ISSSI 2026, September 20-24, 2026, Banff, Alberta, Canada
Phase3 timing
second half of 2026
Regulatory designations
["QIDP","Fast Track","Breakthrough Therapy"]
Phase2a complete response rate
100% of evaluable participants achieved complete clinical response

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