A Phase I Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of BAL2420 in Healthy Adult Subjects

September 10, 2026 updated by: Basilea Pharmaceutica

A First-in-Human, Randomized, Dose-escalation, Double-blind, Placebo-controlled Study to Investigate Safety, Tolerability, and Pharmacokinetics of BAL2420 Administered to Healthy Adult Subjects

BAL2420 (also known as BAL0302420) is being developed as an antibacterial agent for the treatment of severe infections caused by Gram-negative bacteria. In this study, the sponsor aims to investigate the safety, tolerability and pharmacokinetics (PK) of BAL2420 following administration of single ascending doses (Part A) and multiple ascending doses (Parts B and C) in healthy adult volunteers. In all parts of the study, in each cohort, a different dose of study drug is to be investigated against a matched placebo in a randomized and double-blind manner.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
136

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Netherlands
      • Groningen, Netherlands, 9728 NZ
        • Recruiting
        • ICON Early Clinical & Bioanalytical Solutions

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Body mass index: 18.0 to 30.0 kg/m2, inclusive, at screening
  • Total body weight: > 50 kg at screening

Exclusion Criteria:

  • Any uncontrolled or active major systemic disease,
  • Active infection
  • Acute illness within 5 days prior to the first study drug administration that, in the opinion of the Investigator, may impact safety assessments.
  • Clinically-significant physical examination, vital signs, laboratory safety tests, or ECG abnormalities
  • History of risk factors for QT prolongation or Torsades de Pointes
  • QTcF (Fridericia's corrected QT interval) > 450 msec (males) and > 470 msec (females) at screening.
  • Receipt of prescribed medication other than hormonal contraceptives within the 30 days prior to admission to the clinical site.
  • Receipt of over-the-counter medication, vitamin preparations and other food supplements, or herbal medications (e.g., St. John's wort) within 14 days prior to admission to the clinical site.
  • History of relevant drug and/or food allergies, particularly to antibiotics.
  • History of tobacco use or e-cigarette within the past 6 months prior to the first study drug administration.
  • History of alcohol abuse or drug addiction (including soft drugs like cannabis products) within 12 months prior to screening.
  • Average intake of more than 24 units of alcohol per week: one unit of alcohol equals approximately 250 mL of beer, 100 mL of wine, or 35 mL of spirits.
  • Positive screen for hepatitis B surface antigen, hepatitis B core antibodies, hepatitis C virus antibodies, human immunodeficiency virus 1 and 2 antibodies, or syphilis at screening. Note: Hepatitis B vaccination is allowed.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Part A
A single intravenous (IV) dose of BAL2420 or placebo will be administered to healthy subjects
Drug: BAL2420 or placebo
Single ascending dose administration (SAD)
Drug: BAL2420 or placebo
Multiple-ascending dose (MAD)
Drug: BAL2420 or placebo
MAD
Experimental: Part B
A daily IV dose of BAL2420 or placebo will be administered multiple times to healthy subjects
Drug: BAL2420 or placebo
Single ascending dose administration (SAD)
Drug: BAL2420 or placebo
Multiple-ascending dose (MAD)
Drug: BAL2420 or placebo
MAD
Experimental: Part C
A different IV dosing regimen of BAL2420 or placebo will be administered to healthy subjects
Drug: BAL2420 or placebo
Single ascending dose administration (SAD)
Drug: BAL2420 or placebo
Multiple-ascending dose (MAD)
Drug: BAL2420 or placebo
MAD

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Number of participants reporting adverse events (AEs) in Part A
Time Frame: From screening until Day 10
From screening until Day 10
Number of participants with abnormal electrocardiograms QT Interval in Part A
Time Frame: From screening until Day 10
From screening until Day 10
Number of participants reporting adverse events (AEs) in Part B and C
Time Frame: From screening until Day 14
From screening until Day 14
Number of participants with abnormal ECG QT Interval in Part B and C
Time Frame: From screening until Day 14
From screening until Day 14

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Basilea Pharmaceutica

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
German Federal Ministry of Education and Research
Wellcome Trust 224842/Z/21/Z
Novo Nordisk Foundation
Italian Ministry of Economy and Finance
Health Emergency Preparedness and Response Authority
Wellcome Trust 325026/Z/25/Z

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Thomas Kaindl, MD, Basilea Pharmaceutica International Ltd, Allschwil

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 4, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
June 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
June 1, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 18, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 24, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
March 30, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 14, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 10, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
September 1, 2026

More Information

Terms related to this study

Keywords

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • BAL2420-CP-101
  • 2025 (U.S. NIH Grant/Contract: Faculty of Social Sciences Scientific Grant at the University of Gdańsk)
  • 75A50122C00028 (Other Grant/Funding Number: In part by HHS)
  • 2025-523108-59-00 (Ctis)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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