A Study in Healthy Men to Measure the Amount of BI 425809 in the Blood When Taken as a Tablet

March 10, 2026 updated by: Boehringer Ingelheim

Investigation of Pharmacokinetics and Absolute Oral Bioavailability of BI 425809 Administered as an Oral Dose With an Intravenous Microtracer Dose of [C-14]-BI 425809 in Healthy Male Volunteers

The primary objective of this trial is to investigate the absolute oral bioavailability of BI 425809 administered as tablet (Test, T) compared to [C-14]-BI 425809 administered as intravenous microtracer (Reference, R).

Study Overview

Status

Status

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

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 (Actual)

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.
6

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 Locations

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

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Healthy male subjects according to the assessment of the investigator, based on a complete medical history including a physical examination, vital signs (Blood Pressure (BP), Pulse Rate (PR)), 12-lead Electrocardiogram (ECG), and clinical laboratory tests
  • Age of 18 to 65 years (incl.)
  • Body mass index (BMI) of 18.5 to 29.9 kg/m2 (incl.)
  • Signed and dated written informed consent prior to admission to the study in accordance with Good Clinical Practice (GCP) and local legislation

  • Subjects who are sexually active must use, with their partner, highly effective contraception from the time of administration of trial medication until 4 months after administration of trial medication. Adequate methods are:

    • Condoms plus use of hormonal contraception by the female partner that started at least 2 months prior to administration of trial medication (e.g., implants, injectables, combined oral or vaginal contraceptives, intrauterine device) or
    • Condoms plus surgical sterilization (vasectomy at least 1 year prior to enrolment) or
    • Condoms plus surgically sterilised partner (including hysterectomy) or
    • Condoms plus intrauterine device or
    • Condoms plus partner of non-childbearing potential (including homosexual men) Subjects are required to use condoms to prevent unintended exposure of the partner to the study drug via seminal fluid.
    • Alternatively, true abstinence is acceptable when it is in line with the subject's preferred and usual lifestyle. If a subject is usually not sexually active but becomes active, with their partner, they must comply with the contraceptive requirements detailed above.

Exclusion Criteria:

  • Any finding in the medical examination (including Blood Pressure (BP), Pulse Rate (PR) or Electrocardiogram (ECG)) is deviating from normal and judged as clinically relevant by the investigator
  • Repeated measurement of systolic blood pressure outside the range of 90 to 139 mmHg, diastolic blood pressure outside the range of 45 to 89 mmHg, or pulse rate outside the range of 40 to 100 bpm
  • Any laboratory value outside the reference range that the investigator considers to be of clinical relevance
  • Any evidence of a concomitant disease judged as clinically relevant by the investigator
  • Clinically significant gastrointestinal, hepatic, renal, respiratory (including but not limited to interstitial lung disease), cardiovascular, metabolic, immunological or hormonal disorders
  • Further exclusion criteria apply

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: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

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: BI 425809 (T) BI 425809 mixed with [C-14]-BI 425809 (R)
All healthy participants received one unlabelled oral dose of 25 milligram (mg) BI 425809 in the film coated tablet (Test treatment, T) and in addition an intravenous (iv) micro-tracer infusion of 30 microgram (μg) BI 425809 (14-C) (Reference treatment, R), consisting of 27 μg unlabelled BI 425809 mixed with 3 μg labelled [C-14]-BI 425809 in 10 milliliter (mL) iv solution at a concentration of 3 μg BI 425809 (C-14)/ mL. Both treatments were given in the fasted state on the same study day. The reference treatment started 4 hour (h) after administration of the test treatment.
Drug: BI 425809
One 25 mg film coated tablet administered with 240 milliliters of water after an overnight fast of at least 10 hours.
Other Names:
  • Iclepertin
Drug: [C-14]-BI 425809
Intravenous micro-tracer infusion of 30 μg BI 425809 (14-C) administered 4 hours after treatment T.
Other Names:
  • Iclepertin

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
Measure Description
Time Frame
Area Under the Concentration-time Curve of the Analyte ([14C]-BI 425809 After iv Administration as Well as for BI 425809 After Oral Administration) Over the Time Interval From 0 to Infinity (AUC0-∞, Norm)
Time Frame: Pharmacokinetic samples were collected within 2 h before and up to 168 h after single oral administration of unlabelled BI 425809. Further details are in description.

The dose-normalised area under the concentration-time curve of the analyte ([14C]-BI 425809 after iv administration as well as for BI 425809 after oral administration) over the time interval from 0 to infinity (AUC0-∞, norm) is presented.

Geometric least square mean (adjusted geometric mean) and adjusted geometric standard error were calculated using an analysis of variance (ANOVA) model performed on the logarithmic scale, including 'formulation' as a fixed effect and 'subject' as a random effect.

For treatment T, pharmacokinetic samples were collected within 2 h prior to the drug administration and at 1, 2, 3, 4.083, 6, 8, 12, 24, 72, 120 and at 168 h after single oral administration of unlabelled BI 425809. For treatment R, samples were collected at 3, 4.083, 4.167, 4.25, 4.5, 5, 6, 7, 8, 12, 16, 24, 72, 120 and 168 h after single oral administration of unlabelled BI 425809.
Pharmacokinetic samples were collected within 2 h before and up to 168 h after single oral administration of unlabelled BI 425809. Further details are in description.

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Maximum Measured Concentration of the BI 425809 in Plasma After a Single Oral Dose (Cmax)
Time Frame: Pharmacokinetic samples were collected within 2:00 h:m prior to the drug administration and at 1:00, 2:00, 3:00, 4:05, 6:00, 8:00, 12:00, 24:00, 72:00, 120:00 and at 168:00 h:m after drug administration.
Cmax, maximum measured concentration of the BI 425809 in plasma after a single oral dose is presented.
Pharmacokinetic samples were collected within 2:00 h:m prior to the drug administration and at 1:00, 2:00, 3:00, 4:05, 6:00, 8:00, 12:00, 24:00, 72:00, 120:00 and at 168:00 h:m after drug administration.

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.
Boehringer Ingelheim

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

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.
January 15, 2019

Primary Completion (Actual)

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.
March 6, 2019

Study Completion (Actual)

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.
March 6, 2019

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).
December 19, 2018

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.
December 19, 2018

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.
December 20, 2018

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.
March 27, 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.
March 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.
February 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

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.
  • 1346-0015
  • 2018-001194-24 (EudraCT Number)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

Clinical studies sponsored by Boehringer Ingelheim, phases I to IV, interventional and non-interventional, are in scope for sharing of the raw clinical study data and clinical study documents. Exceptions might apply, e.g. studies in products where Boehringer Ingelheim is not the license holder; studies regarding pharmaceutical formulations and associated analytical methods, and studies pertinent to pharmacokinetics using human biomaterials; studies conducted in a single center or targeting rare diseases (in case of low number of patients and therefore limitations with anonymization).

For more details refer to:

https://www.clinicalstudies.boehringer-ingelheim.com/msw/datasharing

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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