A Study in Healthy People to Test How BI 425809 is Taken up in the Body When Taken With or Without Food

The Effect of Food on the Pharmacokinetics of a BI 425809 Tablet Formulation Administered as a Single Dose With and Without Food to Healthy Subjects (an Open-label, Randomised, Two-period, Two-sequence Crossover Trial)

The main objective of this trial is to investigate the potential effect of food on the pharmacokinetics of BI 425809 following administration of the intended Commercial Formulation (iCF) with food (Test treatment, T) and without food (Reference treatment, R).

Study Overview

• Status: Completed
• Conditions: Healthy
• Intervention / Treatment: Drug: BI 425809

• Study Type: Interventional
• Enrollment (Actual): 16
• Phase: Phase 1

Contacts and Locations

Study Locations

• Germany
  • Biberach, Germany, 88397
    • Humanpharmakologisches Zentrum Biberach

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 55 years (Adult)
• Accepts Healthy Volunteers: Yes

Description

Inclusion criteria:

Subjects will only be included in the trial if they meet the following criteria:

• Healthy male or female subjects according to the assessment of the investigator, as 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 55 years (inclusive)
• Body mass index (BMI) of 18.5 to 29.9 kg/m2 (inclusive)
• Signed and dated written informed consent in accordance with International Council for Harmonisation-Good Clinical Practice (ICH-GCP) and local legislation prior to admission to the trial

• Either male subject, or female subject who meets any of the following criteria for a highly effective contraception from at least 30 days before the first administration of trial medication until 30 days after trial completion:

  • Use of combined (estrogen and progestogen containing) hormonal contraception that prevents ovulation (oral, intravaginal or transdermal), plus condom
  • Use of progestogen-only hormonal contraception that inhibits ovulation (only injectables or implants), plus condom
  • Use of intrauterine device (IUD) or intrauterine hormone-releasing system (IUS)
  • Sexually abstinent
  • A vasectomised sexual partner who received medical assessment of the surgical success (documented absence of sperm) and provided that partner is the sole sexual partner of the trial participant
  • Surgically sterilised (including hysterectomy)
  • Postmenopausal, defined as no menses for 1 year without an alternative medical cause (in questionable cases a blood sample with levels of Follicle stimulating hormone (FSH) above 40 Unites per liter (U/L) and estradiol below 30 nanogram per liter (ng/L) is confirmatory)

Exclusion criteria:

• Any finding in the medical examination (including BP, PR or ECG) deviating from normal and assessed as clinically relevant by the investigator
• Repeated measurement of systolic blood pressure outside the range of 90 to 140 mmHg, diastolic blood pressure outside the range of 50 to 90 millimetre of mercury (mmHg), or pulse rate outside the range of 45 to 90 beats per minute (bpm)
• Any laboratory value outside the reference range that the investigator considers to be of clinical relevance
• Any evidence of a concomitant disease assessed as clinically relevant by the investigator
• Gastrointestinal, hepatic, renal, respiratory, cardiovascular, metabolic, immunological or hormonal disorders
• Cholecystectomy or other surgery of the gastrointestinal tract that could interfere with the pharmacokinetics of the trial medication (except appendectomy or simple hernia repair)
• Diseases of the central nervous system (including but not limited to any kind of seizures or stroke), and other relevant neurological or psychiatric disorders
• History of relevant orthostatic hypotension, fainting spells, or blackouts

Further exclusion criteria apply.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: BI 425809 without food (R), then BI 425809 with food (T)	Drug: BI 425809; BI 425809; Other Names: Iclepertin
Experimental: BI 425809 with food (T), then BI 425809 without food (R)	Drug: BI 425809; BI 425809; Other Names: Iclepertin

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Area Under the Concentration-time Curve of BI 425809 in Plasma Over the Time Interval From 0 to the Last Quantifiable Data Point (AUC0-tz)	This outcome measured the area under the concentration-time curve of BI 425809 in plasma over the time interval from 0 to the last quantifiable data point (AUC0-tz) following its administration in fed and fasted state. Geometric least square mean (adjusted geometric mean) and adjusted geometric standard error were calculated using an analysis of variance (ANOVA) accounting for the following sources of variation: sequence, subjects within sequences, period and treatment. The effect 'subjects within sequences' will be considered as random, whereas the other effects will be considered as fixed.	From within 2 hours prior and 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6, 8, 10, 12, 24, 47, 71, 119, 167 and 215 hours after BI 425809 administration.
Maximum Measured Concentration of BI 425809 in Plasma (Cmax)	This outcome measured the maximum measured concentration of BI 425809 in plasma (Cmax) following its administration in fed and fasted state. Geometric least square mean (adjusted geometric mean) and adjusted geometric standard error were calculated using an analysis of variance (ANOVA) accounting for the following sources of variation: sequence, subjects within sequences, period and treatment. The effect 'subjects within sequences' will be considered as random, whereas the other effects will be considered as fixed.	From within 2 hours prior and 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6, 8, 10, 12, 24, 47, 71, 119, 167 and 215 hours after BI 425809 administration.

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Area Under the Concentration-time Curve of BI 425809 in Plasma Over the Time Interval From 0 Extrapolated to Infinity (AUC0-∞)	This outcome measured area under the concentration-time curve of BI 425809 in plasma over the time interval from 0 extrapolated to infinity (AUC0-∞) following its administration in fed and fasted state. Geometric least square mean (adjusted geometric mean) and adjusted geometric standard error were calculated using an analysis of variance (ANOVA) accounting for the following sources of variation: sequence, subjects within sequences, period and treatment. The effect 'subjects within sequences' will be considered as random, whereas the other effects will be considered as fixed.	From within 2 hours prior and 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6, 8, 10, 12, 24, 47, 71, 119, 167 and 215 hours after BI 425809 administration.

Collaborators and Investigators

• Sponsor: Boehringer Ingelheim

Publications and helpful links

General Publications

• Madari S, Breithaupt-Groegler K, English BA, Hohl K, Jungnik A, Desch M. Assessing the Effect of Food on the Pharmacokinetics of Iclepertin in Healthy Volunteers: A Phase I, Open-Label, Randomised, Cross-over Trial. Eur J Drug Metab Pharmacokinet. 2025 Sep;50(5):399-408. doi: 10.1007/s13318-025-00956-1. Epub 2025 Jul 17.

Helpful Links

• Related Info

Study record dates

Study Major Dates

• Study Start (Actual): October 25, 2022
• Primary Completion (Actual): December 28, 2022
• Study Completion (Actual): December 28, 2022

Study Registration Dates

• First Submitted: April 20, 2022
• First Submitted That Met QC Criteria: April 20, 2022
• First Posted (Actual): April 26, 2022

Study Record Updates

• Last Update Posted (Actual): April 20, 2026
• Last Update Submitted That Met QC Criteria: April 16, 2026
• Last Verified: April 1, 2026

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Nootropic Agents; BI 425809
• Other Study ID Numbers: 1346-0053; 2021-006659-33 (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.mystudywindow.com/msw/datatransparency

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No