This study is a drug-drug interaction (DDI) investigation involving Linaprazan Glurate capsules and a combination of clarithromycin tablets, amoxicillin capsules, and bismuth potassium citrate capsules. The study plan is divided into two parts: one involving Hp-negative healthy subjects and the other involving Hp-positive subjects.
The first part of the study is designed as a single-center, randomized, open-label, four-period, four-sequence crossover trial to evaluate the changes in pharmacokinetic (PK) profiles of Linaprazan Glurate capsules when co-administered with clarithromycin tablets and amoxicillin capsules compared to their individual administration, as well as the safety and tolerability of the combination therapy in Hp-negative healthy adult Chinese subjects. The second part of the study is designed as a single-center, randomized, open-label, parallel-group, positive-controlled trial to compare the differences in systemic exposure of bismuth potassium citrate capsules between the Linaprazan Glurate capsule-based quadruple therapy (combined with clarithromycin tablets, amoxicillin capsules, and bismuth potassium citrate capsules) and the esomeprazole magnesium enteric-coated tablet-based quadruple therapy (combined with clarithromycin tablets, amoxicillin capsules, and bismuth potassium citrate capsules), to evaluate the pharmacodynamic effects on intragastric pH, to assess the safety and tolerability of the Linaprazan Glurate capsule-based quadruple therapy, and to preliminarily explore its efficacy in eradicating Helicobacter pylori (Hp) in Hp-positive subjects.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
56
Linaprazan Glurate capsules
Bismuth Potassium Citrate Capsules
Amoxicillin Capsules
The Affiliated Hospital of Guizhou Medical University
Guiyang, Guizhou, China
Steady state maximum concentration (Cmax,ss)
Cmax,ss of of Linaprazan Glurate and its active metabolite(s), clarithromycin and its active metabolite(s), and amoxicillin in Part 1 study.
Time frame: 7 days
AUC0-τ,ss(The area under the drug-time curve within the dosing interval after reaching the steady state)
AUC0-τ,ss of Linaprazan Glurate and its active metabolite(s), clarithromycin and its active metabolite(s), and amoxicillin in Part 1 study.
Time frame: 7 days
Cav,ss (Average steady-state blood drug concentration)
Cav,ss of Linaprazan Glurate and its active metabolite(s), clarithromycin and its active metabolite(s), and amoxicillin in Part 1 study.
Time frame: 7 days
Tmax,ss (Steady-state peak time)
Tmax,ss of Linaprazan Glurate and its active metabolite(s), clarithromycin and its active metabolite(s), and amoxicillin in Part 1 study.
Time frame: 7 days
CLss/F(Steady-state apparent clearance rate)
CLss/F of Linaprazan Glurate and its active metabolite(s), clarithromycin and its active metabolite(s), and amoxicillin in Part 1 study.
Time frame: 7 days
t1/2z(Terminal elimination half-life)
t1/2z of Linaprazan Glurate and its active metabolite(s), clarithromycin and its active metabolite(s), and amoxicillin in Part 1 study; and t1/2z of Pharmacokinetic Parameters of Bismuth in Part 2 study.
Time frame: 7, 14 days
Vz/F (Apparent volume of distribution in the terminal elimination phase)
Vz/F of Linaprazan Glurate and its active metabolite(s), clarithromycin and its active metabolite(s), and amoxicillin in Part 1 study; and Vz/F of Pharmacokinetic Parameters of Bismuth in Part 2 study.
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Clarithromycin Tablets
Esomeprazole Magnesium Enteric-coated Tablets
Time frame: 7, 14 days
λz (Terminal elimination rate constant)
λz of Linaprazan Glurate and its active metabolite(s), clarithromycin and its active metabolite(s), and amoxicillin in Part 1 study; and λz of Pharmacokinetic Parameters of Bismuth in Part 2 study.
Time frame: 7, 14 days
MRT(mean residence time)
MRT of Linaprazan Glurate and its active metabolite(s), clarithromycin and its active metabolite(s), and amoxicillin in Part 1 study.
Time frame: 7 days
Cmax(Maximum observed plasma drug concentration)
Cmax of Pharmacokinetic Parameters of Bismuth in Part 2 study.
Time frame: 14 days
AUC0-τ (The area under the drug-time curve within the dosing interval)
AUC0-τ of Pharmacokinetic Parameters of Bismuth in Part 2 study.
Time frame: 14 days
Tmax (Time to reach maximum plasma concentration)
Tmax of Pharmacokinetic Parameters of Bismuth in Part 2 study.
Time frame: 14 days
CL/F (apparent clearance)
CL/F of Pharmacokinetic Parameters of Bismuth in Part 2 study.
Time frame: 14 days
Ae0-τ (Amount of drug excreted in urine over the dosing interval)
Ae0-τ of Pharmacokinetic Parameters of Bismuth in Part 2 study.
Time frame: 14 days
fe (Amount of drug excreted in urine over the dosing interval)
fe of Pharmacokinetic Parameters of Bismuth in Part 2 study.
Time frame: 14 days
CLR (renal clearance)
CLR of Pharmacokinetic Parameters of Bismuth in Part 2 study.
Time frame: 14 days
The percentage of time over a 24-hour period that intragastric pH ≥ 4 and pH ≥ 6
Percentage of time with intragastric pH ≥ 4 and ≥ 6 during 24-hour monitoring
Time frame: 1, 14 days
Proportion of subjects with successful Helicobacter pylori (Hp) eradication
Proportion of subjects with successful Helicobacter pylori (Hp) eradication confirmed by ¹³C-UBT or ¹⁴C-UBT.
Time frame: 1, 14 days
Number of subjests With Adverse Events
Adverse event severity was graded from 1 to 5 according to the Common Terminology Criteria for Adverse Events (CTCAE) version 5.0.
Time frame: up to 56 days
Number of subjests With Clinically Notable Electrocardiogram (ECG) Values
Record the standard 12-lead ECG.
Time frame: up to 56 days