Pharmacokinetics of Midazolam When Co-administered With HEC74647 and HEC110114

Study Overview
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Brief Summary
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This is a single center, open-label study to investigate whether HEC74647 and HEC110114 has an effect on the pharmacokinetic (PK) profile of midazolam（a cytochrome (CYP) 3A4 substrate）in healthy subjects

Detailed Description
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This is a single center, open-label study in healthy adult subjects. Total 14 subjects will be enrolled into the study and will be receive study drug per the defined treatment.

Official Title
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A Single-center, Open-label Study to Investigate the Effect of a Single Oral Dose of HEC74647 and HEC110114 on the Pharmacokinetics of Midazolam, and Their Metabolites in Healthy Subjects

Conditions
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Healthy Subjects

Intervention / Treatment
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* Drug: Midazolam Syrup
* Drug: HEC74647PA
* Drug: HEC110114


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Sign the informed consent form before the trial and fully understand the contents of the trial, the process and possible adverse reactions. Be able to complete the study according to the trail protocol. Subjects (including partners) have no pregnancy plan within 3 months after the last dose of study drug and voluntarily take effective contraceptive measures. Must be male or female between 18 to 45 years of age inclusive. Male and female should weigh no less than 50 kg and 45 kg respectively, and body mass index (BMI) between 18 and 28 kg /m2, inclusive. Physical examination and vital signs without clinically significant abnormalities. Exclusion Criteria: Use of >5 cigarettes per day during the past 3 months. Known history of allergy to study drugs#or allergies constitution ( multiple drug and food allergies History of alcohol abuse (14 units of alcohol per week: 1 unit = 285 mL of beer, or 25 mL of spirits or 100 mL of wine). Donation or loss of blood over 450 mL within 3 months prior to screening. 12-lead ECG with clinically significant. Positive for Viral hepatitis (including hepatitis B and C), HIV and syphilis. Subjects deemed unsuitable by the investigator for any other reason.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 45 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Midazolam Syrup HEC74647PA HEC110114<br>Subjects will receive 5mg Midazolam Syrup on Day 1,100 mg HEC74647PA and 600 mg HEC110114 on Day3 8, 5mg Midazolam Syrup co-administered with 100 mg HEC74647PA and 600 mg HEC110114 on Day9. | Drug: Midazolam Syrup<br>* Administered Midazolam Syrup 5 mg orally once daily in fed state;<br>Drug: HEC74647PA<br>* Administered HEC74647PA 100 mg orally once daily in fed state;<br>Drug: HEC110114<br>* Administered HEC110114 600 mg orally once daily in fed state;<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Effect of Steady-state Oral HEC74647PA and HEC110114 on the Single Dose Pharmacokinetics (PK) of Oral Midazolam in Healthy Subjects (Cmax) |  | Day 1, Day9 | 
| Effect of Steady-state Oral HEC74647PA and HEC110114 on the Single Dose Pharmacokinetics (PK) of Oral Midazolam in Healthy Subjects (AUC0-t) |  | Day 1, Day9 | 
| Effect of Steady-state Oral HEC74647PA and HEC110114 on the Single Dose Pharmacokinetics (PK) of Oral Midazolam in Healthy Subjects (AUC0- 0-∞) |  | Day 1, Day9 | 
| Incidence of adverse eventsECG, or Physical Examination. |  | Day 1 to Day16 |