A Study in Healthy Men to Test Whether BI 409306, BI 425809 or Lamotrigine Can Reverse the Memory Problems Caused by Ketamine

  • days left to enroll
  • participants needed
  • sponsor
    Boehringer Ingelheim
Updated on 28 June 2022
Accepts healthy volunteers


The main objective of this trail is to investigate if and to what extent BI 409306, BI 425809 and lamotrigine attenuate ketamine induced cognitive deficits.

Condition Healthy
Treatment Placebo, Lamotrigine, BI 409306, BI 425809
Clinical Study IdentifierNCT04602221
SponsorBoehringer Ingelheim
Last Modified on28 June 2022


Yes No Not Sure

Inclusion Criteria

Healthy male subjects according to the assessment of the investigator, as based on a complete medical history including a physical examination, vital signs (BP, PR), 12-lead ECG, and clinical laboratory tests
Age of 18 to 55 years (inclusive)
BMI of 18.5 to 32 kg/m2 (inclusive)
Signed and dated written informed consent prior to admission to the study, in accordance with GCP and local legislation
Male subjects who meet any of the following criteria from at least 30 days before the first administration of trial medication until 30 days after trial completion
Use of adequate contraception, e.g. use of condom (male subjects) plus any of the following methods (female partners): intrauterine device, hormonal contraception (e.g. implants, injectables, combined oral or vaginal contraceptives) that started at least 2 months prior to first drug administration, or barrier method (e.g. diaphragm with spermicide)
Sexually abstinent
Vasectomised (vasectomy at least 1 year prior to enrolment)
Surgically sterilised female partner (including hysterectomy, bilateral tubal occlusion or bilateral oophorectomy)
Postmenopausal female partner, defined as at least 1 year of spontaneous amenorrhea

Exclusion Criteria

Any finding in the medical examination (including ECG) deviating from normal and assessed as clinically relevant by the investigator
Repeated measurement of systolic blood pressure outside the range of 100 to 140 mmHg, diastolic blood pressure outside the range of 50 to 90 mmHg, or pulse rate outside the range of 50 to 90 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)
History of 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
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Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

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If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

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Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

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