Full Press Release Details
Armata Pharmaceuticals Announces Encouraging
Results from the Phase 2 Tailwind Study of Inhaled AP-PA02 in Non-Cystic Fibrosis Bronchiectasis Subjects with Chronic Pulmonary
Pseudomonas aeruginosa Infection
Results demonstrate that inhaled AP-PA02 provides
a durable reduction of Pseudomonas aeruginosa in the lung, with a favorable safety and tolerability profile
ANGELES, Calif., December 19, 2024 -- Armata Pharmaceuticals, Inc. (NYSE American: ARMP) ("Armata" or the
"Company"), a biotechnology company focused on the development of high-purity pathogen-specific bacteriophage therapeutics
for chronic pulmonary diseases and antibiotic-resistant bacterial pathogens, today announced encouraging topline results from its Phase
2 ("Tailwind") trial evaluating AP-PA02, a novel, inhaled multi-phage therapeutic for the treatment of chronic pulmonary
Pseudomonas aeruginosa ("P.a." or "P. aeruginosa") infections in non-cystic fibrosis bronchiectasis
("NCFB") patients. This is the second successful clinical trial AP-PA02, Armata's lead pulmonary candidate, which was
first evaluated in cystic fibrosis patients in the Phase 1b/2a SWARM-P.a. trial, completed in 2023.
Tailwind study (NCT05616221) was a multicenter, randomized, double-blind, placebo-controlled trial that
evaluated the safety, pharmacokinetics and efficacy of inhaled AP-PA02. The Tailwind study was conducted in two cohorts
running in parallel: subjects in one cohort (cohort A) received inhaled AP-PA02 as monotherapy, while subjects in another
cohort (cohort B) received inhaled AP-PA02 in combination with inhaled anti-pseudomonal antibiotic treatment. Subjects in both
cohorts were dosed at home by nebulization with study drug administered every 12 hours for 10 days and were followed for
approximately four weeks after receiving their last dose of study drug.
The primary efficacy endpoint was the reduction
in P.a. colony forming units ("CFUs") in the lung sputum at one week following completion of dosing (day 17) compared
to baseline. Per the statistical analysis plan, efficacy analysis of each independent cohort showed no significant difference between
subjects treated with AP-PA02 and placebo due to small numbers of subjects in each cohort. Notably, a post-hoc intent-to-treat analysis
(n=33 active and n=15 placebo; all subjects from both cohorts) demonstrated a statistically significant reduction of P.a. CFUs
in the lung at day 17 (AP-PA02 vs. placebo; P=0.05). The reduction in P.a. CFUs persisted two weeks following completion of dosing
with AP-PA02 when compared with placebo at day 24 (AP-PA02 vs. placebo; P=0.015). Additionally, paired analysis of P.a. CFU density
at baseline compared to day 10 (P=0.03), day 11 (P=0.01), day 17 (P=0.003) and day 24 (P=0.018) was significant in the AP-PA02-treated
cohort. We believe the data suggest that AP-PA02 alone is as effective as the combination therapy of phage and antibiotics in reducing
P.a. CFUs in the lung. Additionally, approximately one-third of subjects treated with phage monotherapy exhibited at least a 2-log
CFU reduction in P.a. compared to no reduction in placebo treated subjects. The study data indicate the potential for phage therapy
to reduce reliance on chronic antibiotic use. Armata's latest corporate presentation with topline results from the Phase 2 Tailwind
study can be found here.
Safety data indicate that inhaled AP-PA02 was
well-tolerated with treatment-emergent adverse events mild and self-limiting. There was one possibly related serious adverse event that
was linked to an acute pulmonary event requiring hospitalization that was responsive to antibiotics. We believe the safety and tolerability
of AP-PA02 exhibited a promising profile for treating chronically infected NCFB patients.
"The positive results from our Tailwind
study further demonstrate the potential of our high-purity phage cocktail as a new monotherapy treatment alternative for chronic
pulmonary disease caused by P. aeruginosa infection, including drug-resistant bacteria," stated Dr. Deborah Birx, Chief
Executive Officer of Armata. "From the beginning, our mission at Armata has been to evaluate phage-based therapeutics in randomized
controlled clinical trials that evaluate safety and efficacy to support potential regulatory approval."
About Armata Pharmaceuticals, Inc.
Armata is a clinical-stage biotechnology company
focused on the development of pathogen-specific bacteriophage therapeutics for the treatment of antibiotic-resistant and difficult-to-treat
bacterial infections using its proprietary bacteriophage-based technology. Armata is developing and advancing a broad pipeline of natural
and synthetic phage candidates, including clinical candidates for Pseudomonas aeruginosa, Staphylococcus aureus, and other
pathogens. Armata is committed to advancing phage therapy with drug development expertise that spans bench to clinic, including in-house
phage-specific cGMP manufacturing to support full commercialization.
Forward Looking Statements
This communication contains "forward-looking"
statements as defined by the Private Securities Litigation Reform Act of 1995. These statements relate to future events, results or to
Armata's future financial performance and involve known and unknown risks, uncertainties and other factors which may cause Armata's
actual results, performance or events to be materially different from any future results, performance or events expressed or implied by
the forward-looking statements. In some cases, you can identify these statements by terms such as "anticipate," "believe,"
"could," "estimate," "expect," "intend," "may," "plan," "potential,"
"predict," "project," "should," "will," "would" or the negative of those terms,
and similar expressions. These forward-looking statements reflect management's beliefs and views with respect to future events and
are based on estimates and assumptions as of the date of this communication and are subject to risks and uncertainties including risks
related to Armata's development of bacteriophage-based therapies; ability to staff and maintain its production facilities under
fully compliant current Good Manufacturing Practices; ability to meet anticipated milestones in the development and testing of the relevant
product; ability to be a leader in the development of phage-based therapeutics; ability to achieve its vision, including improvements
through engineering and success of clinical trials; ability to successfully complete preclinical and clinical development of, and obtain
regulatory approval of its product candidates and commercialize any approved products on its expected timeframes or at all; and Armata's
estimates regarding anticipated operating losses, capital requirements and needs for additional funds. Additional risks and uncertainties
relating to Armata and its business can be found under the caption "Risk Factors" and elsewhere in Armata's filings
and reports with the SEC, including in Armata's Annual Report on Form 10-K, filed with the SEC on March 21, 2024, and
in its subsequent filings with the SEC.
Armata expressly disclaims any obligation or undertaking
to release publicly any updates or revisions to any forward-looking statements contained herein to reflect any change in Armata's
expectations with regard thereto or any change in events, conditions or circumstances on which any such statements are based.
Armata Pharmaceuticals, Inc.
LifeSci Advisors, LLC