Clinical trial Recruiting at 9 sites Phase 2 Interventional Ages 18 and up

Nebulized phage (BX004) treatment for adults with CF and chronic Pseudomonas lung infection

Official title: A Phase 2b, Randomized, Double-Blind, Placebo-Controlled, Multicenter Study to Evaluate Nebulized Bacteriophage Treatment in Outpatient Adult Cystic Fibrosis (CF) Subjects With Chronic Pseudomonas Aeruginosa (PsA) Pulmonary Infection

Run by BiomX, Inc. · NCT06998043 · Data updated 2026-11-12

This trial will test whether inhaled phage therapy (BX004), given twice daily for 8 weeks, can reduce Pseudomonas aeruginosa in the sputum of adults with cystic fibrosis and chronic lung infection.

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment63 (estimated)
SponsorBiomX, Inc.
Industry-sponsored
Locations14 sites (Birmingham, Alabama and 13 other locations)
StatusRecruiting
StartedJuly 2, 2025
Main results expectedMarch 2026
Study endsSeptember 2026
Registry record updatedJuly 22, 2025
Trial IDNCT06998043 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults (≥18 years) with confirmed cystic fibrosis and chronic Pseudomonas aeruginosa pulmonary infection who are clinically stable, have FEV1 40–80% predicted, and can provide adequate sputum samples are ideal candidates.

Probably not a fit

Patients under 18, those with FEV1 below 40% predicted, known hypersensitivity to bacteriophages or formulation components, recent phage therapy, or recent detection of Burkholderia cenocepacia or active nontuberculous mycobacterial infection are unlikely to benefit or be eligible.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a randomized, double-blind, placebo-controlled, multicenter Phase 2b study comparing nebulized BX004 versus placebo in clinically stable adults with cystic fibrosis and chronic Pseudomonas aeruginosa pulmonary infection. Participants receive twice-daily nebulized dosing for 8 weeks on top of their background CF therapies, with sputum samples collected to measure bacterial burden. Primary outcome is change in PsA amount in sputum; secondary outcomes include lung function, quality of life, rates of negative sputum cultures, and safety/tolerability. Subjects are followed for safety for 6 months after dosing, with oversight by a CF Foundation Data Safety Monitoring Board.

Why it matters

Potential benefit: If successful, BX004 could offer a new inhaled option to lower Pseudomonas levels in the lungs, potentially improving breathing, quality of life, and reducing reliance on systemic antibiotics.

How similar studies have gone: Phage therapy for Pseudomonas has shown promise in case reports and small compassionate-use series, but randomized controlled data are limited and this approach remains relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Key Inclusion Criteria:

* Cystic fibrosis patients with chronic Pseudomonas aeruginosa pulmonary infection receiving standard of care inhaled antibiotics (cycling or continuous regimen) or no inhaled antibiotics
* Age ≥ 18 years
* FEV1 40%-80% predicted
* Clinically stable lung disease
* Willing and able to provide adequate sputum samples, using any method (spontaneously expectorated, induced, from home or clinic) at designated study visits.

Key Exclusion Criteria:

* Known hypersensitivity to bacteriophages or excipients in the formulation.
* Receipt of prior bacteriophage therapy within the 6 months prior to Screening or Day 1
* Detection of Burkholderia cenocepacia from respiratory tract within 1 year prior to Screening or from Screening culture
* Currently receiving systemic treatment for allergic bronchopulmonary aspergillosis
* Currently receiving treatment for active infection with non-tuberculous mycobacteria or prior detection of Mycobacterium abscessus in 12 months prior to Screening
* History of severe neutropenia
* History of lung transplant
* History of solid organ transplant
* Acquired or primary immunodeficiency syndrome
* Initiation or change in type of CFTR modulator less than 3 months prior to Screening
* Pregnant or breastfeeding female

Where it's running

  • University of Alabama at Birmingham
    Birmingham, Alabama, United States
    Recruiting
  • University of California San Francisco
    San Francisco, California, United States
    Recruiting
  • National Jewish Health
    Denver, Colorado, United States
    Recruiting
  • Central Florida Pulmonary Group
    Orlando, Florida, United States
    Recruiting
  • Avanza Medical Center
    Pensacola, Florida, United States
    Recruiting
  • Rutgers, Robert Wood Johnson Medical School
    New Brunswick, New Jersey, United States
    Recruiting
Show 8 more locations
  • New York Medical College
    Hawthorne, New York, United States
    Recruiting
  • Northwell Health
    New York, New York, United States
    Recruiting
  • Vanderbilt University Medical Center
    Nashville, Tennessee, United States
    Recruiting
  • Providence Alaska Medical Center
    Anchorage, Alaska, United States
    Not yet recruiting
  • University of Arkansas for Medical Sciences
    Little Rock, Arkansas, United States
    Not yet recruiting
  • Stanford University
    Palo Alto, California, United States
    Not yet recruiting
  • Joe DiMaggio Children's Health
    Hollywood, Florida, United States
    Not yet recruiting
  • University of Utah
    Salt Lake City, Utah, United States
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.