Clinical trial Recruiting at 2 sites Phase 1 Interventional Ages 18 and up

Testing a new treatment for Staphylococcus Aureus decolonization

Official title: A Randomized Double-blind Placebo-controlled First-in-man Single-dose and Multiple Dose Study to Evaluate the Safety, Tolerability and Efficacy of a Recombinant Chimeric Bacteriophage Endolysin HY-133 With an Extended Phase to Evaluate Effects of the Nasal Microbiome

Run by University Hospital Tuebingen · NCT06290557 · Data updated 2026-11-12

This study is testing a new nasal spray treatment to see if it can help healthy people get rid of Staphylococcus Aureus bacteria from their noses.

Quick facts

PhasePhase 1
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment52 (estimated)
SponsorUniversity Hospital Tuebingen
Academic / other
Locations2 sites (Tübingen and 1 other locations)
StatusRecruiting
StartedJuly 10, 2024
Main results expectedJuly 1, 2025
Study endsJuly 1, 2026
Registry record updatedDecember 6, 2024
Trial IDNCT06290557 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are healthy adults aged 18 and older who are nasal carriers of methicillin-susceptible S. aureus.

Probably not a fit

Patients with methicillin-resistant S. aureus (MRSA) or significant underlying health conditions may not benefit from this study.

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

What this trial studies

This clinical trial evaluates the safety, tolerability, and efficacy of a novel recombinant chimeric bacteriophage endolysin, HY-133, for decolonizing Staphylococcus Aureus in healthy subjects. Participants will receive either a single dose or multiple doses of the treatment, administered as a nasal spray, with a randomized, double-blind, placebo-controlled design to ensure unbiased results. The study aims to determine the effectiveness of HY-133 in reducing nasal colonization of methicillin-susceptible S. aureus (MSSA).

Why it matters

Potential benefit: If successful, this treatment could provide a new method for effectively decolonizing Staphylococcus Aureus, potentially reducing infection rates.

How similar studies have gone: While this approach is innovative, similar studies using bacteriophage therapy have shown promise, indicating potential for success.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria

* Must be ≥ 18 years at the time of signing the informedconsent.
* Understand and voluntarily sign an informed consent document prior to any study related
* assessments/procedures.
* Nasal colonization with methicillin-susceptible S. aureus (MSSA)
* Female Subject of childbearing potential1 and male subjects with female partner of childbearing potential1 is willing to use highly effective contraceptive methods during treatment until end of study at D15

Exclusion Criteria

* Nasal colonization with methicillin-resistant S. aureus (MRSA)
* Nasal traumata including nose penetrating foreign bodies (e.g. piercings)
* Presence of any significant morbidity, e.g. Diabetes, cardiovascular disease
* Acute or known chronic diseases of the nose or the paranasal sinuses
* Acute or known chronic diseases of other parts of the respiratory tract
* Running nose due to other reasons (e.g. allergic diseases)7. Positive serological HIV, hepatitis A, B or C test. In case of positive HBsAg, volunteer must provide prove of hepatitis B vaccination, otherwise volunteer must be excluded.
* Women during pregnancy and lactation.
* History of hypersensitivity to the investigational medicinal product or to any drug with similar chemical structure or to any excipient present in the pharmaceutical form of the investigational medicinal product.
* Participation in other clinical trials or observation period of competing trials, in the 12 weeks prior to screening.
* Acute or chronic, clinically significant psychiatric, hematologic, pulmonary, cardiovascular, or hepatic or renal functional abnormality as determined by the Investigator based on medical history, physical exam, and/or laboratory screening test
* Systemic antibiotic treatment in the 12 weeks prior to screening.
* Intranasal eradication therapy in the 12 weeks prior to screening.

Where it's running

  • Department of Dermatology, University Hospital Tuebingen
    Tübingen, Germany
    Recruiting
  • Department of Dermatology
    Tübingen, Germany
    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.