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Drug-Drug Interaction Study: ASP2151 and Bupropion

A Single-centre, Open-label Study in Healthy Men to Investigate the Effect of Repeated Oral Doses of ASP2151 on the Pharmacokinetics of Bupropion

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02369172
Enrollment
24
Registered
2015-02-23
Start date
2015-02-28
Completion date
2015-04-30
Last updated
2019-02-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy

Keywords

Herpes, volunteers, drug-drug interaction

Brief summary

CYP2B6 is involved in the metabolism of many drugs. So, it is important to assess in vivo the effect of ASP2151 on that enzyme to determine any possible drug interactions. The aim of this trial is to investigate the potential for interaction of ASP2151 with the CYP2B6 probe substrate bupropion.

Interventions

DRUGBupropion

Sponsors

Maruho Europe Limited
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to 45 Years
Healthy volunteers
Yes

Inclusion criteria

* A body mass index (Quetelet index) in the range 18.0-30.9. * Sufficient intelligence to understand the nature of the trial and any hazards of participating in it. Ability to communicate satisfactorily with the investigator and to participate in, and comply with the requirements of, the entire trial. * Willingness to give written consent to participate after reading the information and consent form, and after having the opportunity to discuss the trial with the investigator or his delegate. * Willingness to give written consent to have data entered into The Overvolunteering Prevention System.

Exclusion criteria

* Clinically relevant abnormal history, physical findings, ECG, or laboratory values at the pre-trial screening assessment that could interfere with the objectives of the trial or the safety of the volunteer. * Any of the following liver function tests higher than 1.5 times the ULN at the screening visit: aspartate aminotransferase (AST), alanine aminotransferase (ALT), ALP, bilirubin, gamma glutamyl transpeptidase (gamma-GT). * Platelet counts outside normal limits (129,000-346,000/μL). * Presence of acute or chronic illness or history of chronic illness sufficient to invalidate the volunteer's participation in the trial or make it unnecessarily hazardous. * Clinically significant impaired endocrine, thyroid, hepatic, respiratory or renal function, diabetes mellitus, coronary heart disease, or history of any psychotic mental illness. * History of bleeding diathesis, head injury, intracranial mass lesions, hydrocephalus, epilepsy, seizures, depression, self-harm (or thoughts of self-harm) or eating disorders. * Surgery (eg stomach bypass) or medical condition that might affect absorption of medicines. * Presence or history of severe adverse reaction to any drug, history of multiple drug allergies (multiple defined as \>3), or sensitivity to trial medication. * Use, during the 28 days before the first dose of trial medication, of any prescription medicine, or any other medicine or herbal remedy (such as St John's wort) known to interfere with the CYP3A4, CYP2C8, CYP2B6, CYP2D6 or CYP2C19 metabolic pathway. * Use, during the 7 days before the first dose of trial medication, of any over-the-counter medicine, with the exception of paracetamol (acetaminophen). * Participation in another clinical trial of a new chemical entity or a prescription medicine within the previous 3 months. * Presence or history of drug or alcohol abuse, or intake of more than 21 units of alcohol weekly. * Current smoker or history of regular use of tobacco or nicotine-containing products within the previous 6 months. * Blood pressure and heart rate in seated position at the screening examination outside the ranges 90-140 mm Hg systolic, 40-90 mm Hg diastolic; heart rate 40\_100 beats/min. However, if the investigator deems the result to be not clinically significant the subject may be included. * Possibility that the volunteer will not cooperate with the requirements of the protocol. * Evidence of drug abuse on urine testing. * Positive test for hepatitis B, hepatitis C, HIV1 or HIV2. * Loss of more than 400 mL blood during the 3 months before the trial, eg as a blood donor. * Objection by General Practitioner (GP) to volunteer entering trial.

Design outcomes

Primary

MeasureTime frame
Peak Plasma Concentration (Cmax) of Bupropionprior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29
Area Under the Concentration-time Curve Extrapolated to Infinite Time (AUC0-∞) of Bupropionprior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29

Secondary

MeasureTime frameDescription
Number of Participants With Serious and Non-Serious Adverse EventsUp to 32 days after the last doseRefer to the result of adverse event.

Other

MeasureTime frame
Area Under the Concentration-time Curve Extrapolated to Infinite Time (AUC0-∞) of Hydroxybupropionprior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29
Half-life (t1/2) of Hydroxybupropionprior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29
Trough Plasma Concentration (Ctrough) of ASP2151Days 6-14 and at pre-dose and 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 16 and 24 h after dosing on Day 15
Peak Plasma Concentration (Cmax) of ASP2151prior to initial dose and 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 16 and 24 h after dosing on Day 15
Time of Peak Concentration (Tmax) of ASP2151prior to initial dose and 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 16 and 24 h after dosing on Day 15
Area Under the Concentration-time Curve Over the Dosing Interval (AUC0-tau) of ASP2151prior to initial dose and 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 16 and 24 h after dosing on Day 15
Area Under the Concentration-time Curve Extrapolated to Infinite Time (AUC0-∞) of ASP2151prior to initial dose and 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 16 and 24 h after dosing on Day 15
Peak Plasma Concentration (Cmax) of Hydroxybupropionprior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29
Apparent Volume of Distribution (Vd/F) of ASP2151prior to initial dose and 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 16 and 24 h after dosing on Day 15
Apparent Total Body Clearance (CL/F) of ASP2151prior to initial dose and 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 16 and 24 h after dosing on Day 15
Time of Peak Concentration (Tmax) of Bupropionprior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29
Area Under the Curve Over up to Last No-zero Value (AUC0-tn) of Bupropionprior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29
Half-life (t1/2) of Bupropionprior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29
Apparent Volume of Distribution (Vd/F) of Bupropionprior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29
Apparent Total Body Clearance (CL/F) of Bupropionprior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29
Half-life (t1/2) of ASP2151prior to initial dose and 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 16 and 24 h after dosing on Day 15
Time of Peak Concentration (Tmax) of Hydroxybupropionprior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29
Area Under Concentration-Time Curve up to Last Non-zero Value (AUC0-tn) of Hydroxybupropionprior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29

Countries

United Kingdom

Participant flow

Recruitment details

Participants took part in the study at one investigative site in United Kingdom from 03-February 2015 to 17-April 2015

Participants by arm

ArmCount
Bupropion + ASP2151
400 mg ASP2151 followed by 150 mg Bupropion Bupropion ASP2151
24
Total24

Baseline characteristics

CharacteristicBupropion + ASP2151
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
0 Participants
Age, Categorical
Between 18 and 65 years
24 Participants
Age, Continuous32.6 year
STANDARD_DEVIATION 7.1
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
23 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
1 Participants
Race (NIH/OMB)
Black or African American
3 Participants
Race (NIH/OMB)
More than one race
2 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
18 Participants
Region of Enrollment
United Kingdom
24 participants
Sex: Female, Male
Female
0 Participants
Sex: Female, Male
Male
24 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
0 / 240 / 240 / 240 / 24
other
Total, other adverse events
4 / 245 / 2410 / 2412 / 24
serious
Total, serious adverse events
0 / 240 / 240 / 240 / 24

Outcome results

Primary

Area Under the Concentration-time Curve Extrapolated to Infinite Time (AUC0-∞) of Bupropion

Time frame: prior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Day 1Area Under the Concentration-time Curve Extrapolated to Infinite Time (AUC0-∞) of Bupropion777.6 h*ng/mLGeometric Coefficient of Variation 30
Day 15Area Under the Concentration-time Curve Extrapolated to Infinite Time (AUC0-∞) of Bupropion653.7 h*ng/mLGeometric Coefficient of Variation 26.1
Day 22Area Under the Concentration-time Curve Extrapolated to Infinite Time (AUC0-∞) of Bupropion785.5 h*ng/mLGeometric Coefficient of Variation 31.1
Day 29Area Under the Concentration-time Curve Extrapolated to Infinite Time (AUC0-∞) of Bupropion841.4 h*ng/mLGeometric Coefficient of Variation 29
Primary

Peak Plasma Concentration (Cmax) of Bupropion

Time frame: prior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Day 1Peak Plasma Concentration (Cmax) of Bupropion91.28 ng/mLGeometric Coefficient of Variation 27.2
Day 15Peak Plasma Concentration (Cmax) of Bupropion76.94 ng/mLGeometric Coefficient of Variation 30.3
Day 22Peak Plasma Concentration (Cmax) of Bupropion92.21 ng/mLGeometric Coefficient of Variation 28
Day 29Peak Plasma Concentration (Cmax) of Bupropion95 ng/mLGeometric Coefficient of Variation 25.2
Secondary

Number of Participants With Serious and Non-Serious Adverse Events

Refer to the result of adverse event.

Time frame: Up to 32 days after the last dose

ArmMeasureGroupValue (NUMBER)
Day 1Number of Participants With Serious and Non-Serious Adverse EventsNon-serious adverse event12 participants
Day 1Number of Participants With Serious and Non-Serious Adverse Eventsserious adverse event0 participants
Other Pre-specified

Apparent Total Body Clearance (CL/F) of ASP2151

Time frame: prior to initial dose and 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 16 and 24 h after dosing on Day 15

ArmMeasureValue (MEAN)Dispersion
Day 1Apparent Total Body Clearance (CL/F) of ASP215126.43 L/hStandard Deviation 8.65
Other Pre-specified

Apparent Total Body Clearance (CL/F) of Bupropion

Time frame: prior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29

ArmMeasureValue (MEAN)Dispersion
Day 1Apparent Total Body Clearance (CL/F) of Bupropion200.64 L/hStandard Deviation 56.33
Day 15Apparent Total Body Clearance (CL/F) of Bupropion236.46 L/hStandard Deviation 57.2
Day 22Apparent Total Body Clearance (CL/F) of Bupropion199.59 L/hStandard Deviation 62.04
Day 29Apparent Total Body Clearance (CL/F) of Bupropion185.59 L/hStandard Deviation 57.71
Other Pre-specified

Apparent Volume of Distribution (Vd/F) of ASP2151

Time frame: prior to initial dose and 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 16 and 24 h after dosing on Day 15

ArmMeasureValue (MEAN)Dispersion
Day 1Apparent Volume of Distribution (Vd/F) of ASP2151274 LStandard Deviation 97.85
Other Pre-specified

Apparent Volume of Distribution (Vd/F) of Bupropion

Time frame: prior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29

ArmMeasureValue (MEAN)Dispersion
Day 1Apparent Volume of Distribution (Vd/F) of Bupropion2801.5 LStandard Deviation 723.1
Day 15Apparent Volume of Distribution (Vd/F) of Bupropion2791.4 LStandard Deviation 747.05
Day 22Apparent Volume of Distribution (Vd/F) of Bupropion2581.2 LStandard Deviation 588.69
Day 29Apparent Volume of Distribution (Vd/F) of Bupropion2979.7 LStandard Deviation 1124.63
Other Pre-specified

Area Under Concentration-Time Curve up to Last Non-zero Value (AUC0-tn) of Hydroxybupropion

Time frame: prior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Day 1Area Under Concentration-Time Curve up to Last Non-zero Value (AUC0-tn) of Hydroxybupropion10524.7 h*ng/mLGeometric Coefficient of Variation 32.9
Day 15Area Under Concentration-Time Curve up to Last Non-zero Value (AUC0-tn) of Hydroxybupropion10160.7 h*ng/mLGeometric Coefficient of Variation 37.7
Day 22Area Under Concentration-Time Curve up to Last Non-zero Value (AUC0-tn) of Hydroxybupropion11135.4 h*ng/mLGeometric Coefficient of Variation 34.1
Day 29Area Under Concentration-Time Curve up to Last Non-zero Value (AUC0-tn) of Hydroxybupropion10963 h*ng/mLGeometric Coefficient of Variation 37.4
Other Pre-specified

Area Under the Concentration-time Curve Extrapolated to Infinite Time (AUC0-∞) of ASP2151

Time frame: prior to initial dose and 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 16 and 24 h after dosing on Day 15

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Day 1Area Under the Concentration-time Curve Extrapolated to Infinite Time (AUC0-∞) of ASP215115968.1 h*ng/mLGeometric Coefficient of Variation 35.1
Other Pre-specified

Area Under the Concentration-time Curve Extrapolated to Infinite Time (AUC0-∞) of Hydroxybupropion

Time frame: prior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Day 1Area Under the Concentration-time Curve Extrapolated to Infinite Time (AUC0-∞) of Hydroxybupropion11195.7 h*ng/mLGeometric Coefficient of Variation 33.7
Day 15Area Under the Concentration-time Curve Extrapolated to Infinite Time (AUC0-∞) of Hydroxybupropion10838.3 h*ng/mLGeometric Coefficient of Variation 38
Day 22Area Under the Concentration-time Curve Extrapolated to Infinite Time (AUC0-∞) of Hydroxybupropion12037.2 h*ng/mLGeometric Coefficient of Variation 36.1
Day 29Area Under the Concentration-time Curve Extrapolated to Infinite Time (AUC0-∞) of Hydroxybupropion11825.3 h*ng/mLGeometric Coefficient of Variation 38
Other Pre-specified

Area Under the Concentration-time Curve Over the Dosing Interval (AUC0-tau) of ASP2151

Time frame: prior to initial dose and 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 16 and 24 h after dosing on Day 15

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Day 1Area Under the Concentration-time Curve Over the Dosing Interval (AUC0-tau) of ASP215114201.4 h*ng/mLGeometric Coefficient of Variation 33.5
Other Pre-specified

Area Under the Curve Over up to Last No-zero Value (AUC0-tn) of Bupropion

Time frame: prior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Day 1Area Under the Curve Over up to Last No-zero Value (AUC0-tn) of Bupropion732.3 h*ng/mLGeometric Coefficient of Variation 29.9
Day 15Area Under the Curve Over up to Last No-zero Value (AUC0-tn) of Bupropion608.9 h*ng/mLGeometric Coefficient of Variation 26.5
Day 22Area Under the Curve Over up to Last No-zero Value (AUC0-tn) of Bupropion742.8 h*ng/mLGeometric Coefficient of Variation 31.8
Day 29Area Under the Curve Over up to Last No-zero Value (AUC0-tn) of Bupropion794.2 h*ng/mLGeometric Coefficient of Variation 29.4
Other Pre-specified

Half-life (t1/2) of ASP2151

Time frame: prior to initial dose and 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 16 and 24 h after dosing on Day 15

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Day 1Half-life (t1/2) of ASP21517.198 hGeometric Coefficient of Variation 16.7
Other Pre-specified

Half-life (t1/2) of Bupropion

Time frame: prior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Day 1Half-life (t1/2) of Bupropion9.76 hGeometric Coefficient of Variation 47.7
Day 15Half-life (t1/2) of Bupropion8.16 hGeometric Coefficient of Variation 42.1
Day 22Half-life (t1/2) of Bupropion9.13 hGeometric Coefficient of Variation 37
Day 29Half-life (t1/2) of Bupropion10.92 hGeometric Coefficient of Variation 42.7
Other Pre-specified

Half-life (t1/2) of Hydroxybupropion

Time frame: prior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Day 1Half-life (t1/2) of Hydroxybupropion21.38 hGeometric Coefficient of Variation 20.6
Day 15Half-life (t1/2) of Hydroxybupropion20.97 hGeometric Coefficient of Variation 20.3
Day 22Half-life (t1/2) of Hydroxybupropion23.07 hGeometric Coefficient of Variation 23.8
Day 29Half-life (t1/2) of Hydroxybupropion22.89 hGeometric Coefficient of Variation 16.8
Other Pre-specified

Peak Plasma Concentration (Cmax) of ASP2151

Time frame: prior to initial dose and 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 16 and 24 h after dosing on Day 15

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Day 1Peak Plasma Concentration (Cmax) of ASP21511409.8 ng/mLGeometric Coefficient of Variation 33.7
Other Pre-specified

Peak Plasma Concentration (Cmax) of Hydroxybupropion

Time frame: prior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Day 1Peak Plasma Concentration (Cmax) of Hydroxybupropion295.4 ng/mLGeometric Coefficient of Variation 30.9
Day 15Peak Plasma Concentration (Cmax) of Hydroxybupropion300.7 ng/mLGeometric Coefficient of Variation 32.6
Day 22Peak Plasma Concentration (Cmax) of Hydroxybupropion300.6 ng/mLGeometric Coefficient of Variation 27.5
Day 29Peak Plasma Concentration (Cmax) of Hydroxybupropion291.6 ng/mLGeometric Coefficient of Variation 31.2
Other Pre-specified

Time of Peak Concentration (Tmax) of ASP2151

Time frame: prior to initial dose and 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 16 and 24 h after dosing on Day 15

ArmMeasureValue (MEDIAN)
Day 1Time of Peak Concentration (Tmax) of ASP21513 h
Other Pre-specified

Time of Peak Concentration (Tmax) of Bupropion

Time frame: prior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29

ArmMeasureValue (MEDIAN)
Day 1Time of Peak Concentration (Tmax) of Bupropion3 h
Day 15Time of Peak Concentration (Tmax) of Bupropion3 h
Day 22Time of Peak Concentration (Tmax) of Bupropion3 h
Day 29Time of Peak Concentration (Tmax) of Bupropion3 h
Other Pre-specified

Time of Peak Concentration (Tmax) of Hydroxybupropion

Time frame: prior to initial dose of Day 1 and 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, 72 and 96 h after dosing on Day 1, Days 15, 22 and 29

ArmMeasureValue (MEDIAN)
Day 1Time of Peak Concentration (Tmax) of Hydroxybupropion8 h
Day 15Time of Peak Concentration (Tmax) of Hydroxybupropion8 h
Day 22Time of Peak Concentration (Tmax) of Hydroxybupropion8 h
Day 29Time of Peak Concentration (Tmax) of Hydroxybupropion8 h
Other Pre-specified

Trough Plasma Concentration (Ctrough) of ASP2151

Time frame: Days 6-14 and at pre-dose and 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 16 and 24 h after dosing on Day 15

ArmMeasureValue (MEAN)Dispersion
Day 1Trough Plasma Concentration (Ctrough) of ASP21510 ng/mLStandard Deviation 0
Day 15Trough Plasma Concentration (Ctrough) of ASP2151244.95 ng/mLStandard Deviation 104.63
Day 22Trough Plasma Concentration (Ctrough) of ASP2151245.83 ng/mLStandard Deviation 122.39
Day 29Trough Plasma Concentration (Ctrough) of ASP2151219.17 ng/mLStandard Deviation 105.83
Day 10Trough Plasma Concentration (Ctrough) of ASP2151185.31 ng/mLStandard Deviation 84.66
Day 11Trough Plasma Concentration (Ctrough) of ASP2151199.16 ng/mLStandard Deviation 105.72
Day 12Trough Plasma Concentration (Ctrough) of ASP2151197.05 ng/mLStandard Deviation 99.95
Day 13Trough Plasma Concentration (Ctrough) of ASP2151192.66 ng/mLStandard Deviation 102.29
Day 14Trough Plasma Concentration (Ctrough) of ASP2151188.46 ng/mLStandard Deviation 95.75
Day 15Trough Plasma Concentration (Ctrough) of ASP2151178.93 ng/mLStandard Deviation 87.78

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026