Identification and Evaluation of Endogenous Markers for the Assessment of CYP3A Activity
Identification and Evaluation of Endogenous Markers for the Assessment of CYP3A Activity
Identification and evaluation of endogenous markers for the assessment of CYP3A activity in
 female subjects using metabolomics
Eligibility for participation of this study will be determined from demographic information,
 medical history, physical examination, electrocardiogram(ECG) and clinical laboratory tests
 within 3 weeks before study drug administration. Subjects suitable for this study will be
 admitted to the Clinical Trials Center, Seoul National University Hospital on the day before
 dosing, and they will be overnight-fasted from 9 p.m. of Day -1. Urine collection is
 scheduled from 24 hours before midazolam administration to 24 hours after administration.
 Subjects will be dosed midazolam by intravenous around at 9 a.m. of Day 1. Subjects will
 perform scheduled procedures including clinical laboratory tests, electrocardiograms and
 pharmacokinetic samplings. Subjects will be discharged on Day 2 and visit the Clinical Trials
 Center for period 2, ketoconazole administration. After 3 days of ketoconazole
 administration, midazolam will be dosed with ketoconazole on Day 4 of period 2. Subjects will
 perform scheduled procedure and on period 3 rifampicin will be dosed for 9 days and on Day 10
 of period 3 midazolam will be dosed with rifampicin. After subjects perform scheduled
 procedure, the study will be terminated 6-8 days after the end of period 3.
Inclusion Criteria:

 -  Age: Between 20 to 50 years of age, inclusive

 -  Weight: Between 45 to 95 kg, within 17 - 28 of Body Mass Index

 -  Menstruation cycle between 21 to 35 without contraceptive

 -  Subject who agree contraception during the study

 -  Subject who are reliable and willing to make themselves available during the study
 period, are willing to follow the study protocol, and give their written informed
 consent voluntarily

 Exclusion Criteria:

 -  History of hypersensitive reaction to medication (midazolam, ketoconazole, rifampicin)

 -  History of significant clinical illness needs medical caution, including
 cardiovascular, immunologic, hematologic, neuropsychiatric, respiratory,
 gastrointestinal, hepatic, or renal disease or other chronic disease history or
 evidence of drug abuse

 -  A subject whose lab test results are as follows; Liver function test (AST, ALT, GGT,
 ALP, LDH, Total bilirubin) > 1.25 X upper limit of reference range

 -  A subject whose SBP is over 140 mmHg or below 90 mmHg and DBP is over 100 mmHg or
 below 50 mmHg

 -  Presence or history of drug abuse or positive result in urine drug screening test

 -  Blood donation during 2 months or apheresis during 1 month before the study

 -  Use any prescriptive medication, Korean traditional medication not considered
 acceptable by the clinical investigator during the last 14 days period before first
 dosing, or use any OTC medication not considered acceptable by the clinical
 investigator during the last 7 days period before first dosing (if used medication is
 considered acceptable by investigator, patients can be included)

 -  Use of alcohol over 21 units/weeks

 -  Smoker who smoke more than 10 cigarettes per day

 -  Participation in clinical trials of any drug within 60 days prior to the participation
 of the study

 -  Use of grapefruit juice within 1 week before first dose

 -  Use of caffeine drink within 3 days before first dose

 -  Subject pregnant or breast-feeding

 -  Judged to be inappropriate for the study by the investigator