Drug-drug Interaction Trial of AP31969 and Carbamazepine or Itraconazole (NCT07449390) | Clinical Trial Compass
CompletedPhase 1
Drug-drug Interaction Trial of AP31969 and Carbamazepine or Itraconazole
United States28 participantsStarted 2026-04-01
Plain-language summary
The primary objective of the trial is to assess the effect of multiple doses of the cytochrome P450 (CYP3A4) enzyme inducer carbamazepine (Part A) or the CYP3A4 inhibitor itraconazole (Part B) on the single-dose pharmacokinetics (PK) of AP31969 in healthy participants.
Who can participate
Age range
18 Years – 55 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion criteria
. Age: 18 to 55 years, inclusive, at screening.
. Weight: ≥50 kg, at screening.
. Body mass index (BMI): 18.0 to 32.0 kg/m\^2, inclusive, at screening.
. Sex: male or female; female participants may be of childbearing potential or of nonchildbearing potential.
. In good physical and mental health.
Exclusion criteria
. History and/or presence of any illness or condition that, in the opinion of the Investigator, might confound the results of the trial or pose an additional risk when administering the trial drugs to the participant (with particular focus on cardiovascular, respiratory, hepatic, renal, gastrointestinal, endocrinological, hematological, cerebrovascular, and neurological diseases including history of syncope and/or convulsions).
. Personal or first-degree relative family history of congenital long QT syndrome or sudden death.
. History of cardiac arrhythmias, except first degree atrial-ventricular block.
. QT interval corrected using fridericia's formula (QTcF)-interval \>450 ms for males and \>470 ms for females.
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Part A: Maximum Observed Plasma Concentration (Cmax) of AP31969 When Administered Alone and With Carbamazepine
Timeframe: AP31969 alone: predose, and at 0.5 to 72 hours postdose on Day 1 and AP31969 in combination: predose, and at 0.5 to 72 hours postdose on Day 15; Carbamazepine alone: predose on Day 15 and morning on Day 18
2
Part B: Cmax of AP31969 When Administered Alone and With Itraconazole
Timeframe: AP31969 alone: predose, and at 0.5 to 72 hours postdose on Day 1, and AP31969 in combination: predose and at 0.5 to 144 hours postdose on Day 15; Itraconazole alone: predose on Day 7 and morning on Day 13
3
Part A: Area Under the Plasma Concentration-time Curve (AUC) from Time 0 to Time of Last Quantifiable Concentration (AUC0-last) of AP31969 When Administered Alone and With Carbamazepine
Timeframe: AP31969 alone: predose, and at 0.5 to 72 hours postdose on Day 1 and AP31969 in combination: predose, and at 0.5 to 72 hours postdose on Day 15; Carbamazepine alone: predose on Day 15 and morning on Day 18
4
Part B: AUC0-last of AP31969 When Administered Alone and With Itraconazole
Timeframe: AP31969 alone: predose, and at 0.5 to 72 hours postdose on Day 1, and AP31969 in combination: predose and at 0.5 to 144 hours postdose on Day 15; Itraconazole alone: predose on Day 7 and morning on Day 13
5
Part A: AUC from Time 0 to Infinity (AUC0-inf) of AP31969 When Administered Alone and With Carbamazepine
. Resting supine systolic blood pressure (BP) (average of 3 readings) \>160 mmHg or \<80 mmHg and diastolic BP (average of 3 readings) \>90 mmHg or \<50 mmHg at screening or admission. If initial results do not meet these criteria, BP may be repeated if in the judgment of the Investigator there is a reason to believe the initial result is inaccurate (e.g., white coat hypertension).
. Use of any prescribed medication within 30 days prior to admission, based on Investigator's judgment. An exception is made for hormonal contraceptives, which may be used throughout the trial.
. Use of any 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, based on Investigator's judgment. An exception is made for acetaminophen/paracetamol, which is allowed up to 2 g/day.
. Positive drug and alcohol screen (opiates, methadone, cocaine, amphetamines \[including ecstasy\], cannabinoids, barbiturates, benzodiazepines, tricyclic antidepressants, and alcohol) at screening or admission.
Timeframe: AP31969 alone: predose, and at 0.5 to 72 hours postdose on Day 1 and AP31969 in combination: predose, and at 0.5 to 72 hours postdose on Day 15; Carbamazepine alone: predose on Day 15 and morning on Day 18
6
Part B: AUC0-inf of AP31969 When Administered Alone and With Itraconazole
Timeframe: AP31969 alone: predose, and at 0.5 to 72 hours postdose on Day 1, and AP31969 in combination: predose and at 0.5 to 144 hours postdose on Day 15; Itraconazole alone: predose on Day 7 and morning on Day 13