An Open-Label, Non-Randomized Study To Evaluate The Steady-State Pharmacokinetics Of Sirolimus Tablets In Chinese Patients With Stable Renal Allografts
试验速览
- 阶段
- 1 期
- 状态
- 已完成
- 发起方
- Pfizer
- 入组人数
- 24
- 试验地点
- 1
- 主要终点
- Maximum Observed Blood Concentration at Steady State (Cmax,ss)
研究概览
简要总结
Sirolimus, 1 mg, white, triangular tablets (Rapamune®) was approved on 03 April 2007 in China for prophylaxis of organ rejection in renal transplantation. A pharmacokinetic (PK) study to be conducted in renal allograft recipients was requested by State Food and Drug Administration (SFDA) to provide further guidance for clinical use.
To minimize risk to patients, this study is designed to collect blood PK samples from renal allograft recipients who are currently under sirolimus (1 mg tablets) treatment with or without concomitant medication(s). PK samples will be collected from these patients to characterize the steady state PK of sirolimus during sirolimus maintenance therapy. This study will not involve any changes to the established treatment regimen for the patients who enroll in the study
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —(Adult, Older Adult)
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Male or female, above 18 years of age and Body Mass Index (BMI) of 18.0 to 25.0 kg/m2, inclusive;
- •Subjects must have received a primary or secondary renal allograft for at least 2 months prior to Screening;
- •Subjects must be currently taking Rapamune tablets for prophylaxis of renal rejection. The dosages of any medications must be stable for at least 2 weeks prior to screening and continue with no change until completion of the last PK sample collection.
排除标准
- •Acute rejection or vascular rejection episode in the 4 weeks prior to Screening; or patients dependent on dialysis; or inadequate renal function (in the opinion of the investigator);
- •Recipients of multiple organ transplants (i.e., prior or concurrent transplantation of any organs other than renal transplant);
- •Current use of strong inducers or inhibitors of CYP3A4 within 2 weeks prior to collection of the first PK sample and until collection of the final PK sample;
- •Any clinically significant medical or psychiatric condition or laboratory abnormality, in the judgment of the investigator.
研究组 & 干预措施
sirolimus
Subjects must be taking sirolimus (1 mg tablet formulation) with or without concomitant medications, unless specifically excluded below, for prophylaxis of renal rejection.
干预措施: Sirolimus (Drug)
结局指标
主要结局
Maximum Observed Blood Concentration at Steady State (Cmax,ss)
时间窗: Predose (0 hour) and 0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 12 and 24 hours post dose
Time to Reach Maximum Observed Blood Concentration at Steady State (Tmax,ss)
时间窗: Predose (0 hour) and 0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 12 and 24 hours post dose
Observed Blood Trough Concentration at Steady State (Ctrough,ss)
时间窗: Predose (0 hour) and 0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 12 and 24 hours post dose
Average Blood Concentration at Steady State (Cave,ss)
时间窗: Predose (0 hour) and 0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 12 and 24 hours post dose
Area Under the Curve From Time Zero to End of Dosing Interval (AUCtau) at Steady State
时间窗: Predose (0 hour) and 0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 12 and 24 hours post dose
Degree of Fluctuation (DF)
时间窗: Predose (0 hour) and 0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 12 and 24 hours post dose
DF, also known as peak to trough fluctuation (PTF) (calculated as \[Cmax minus Ctrough\] divided by Cave), is a unit-less ratio of the Cmax to Ctrough decrease expressed as a fraction of the average concentration during a dosing interval.
Apparent Oral Clearance (CL/F)
时间窗: Predose (0 hour) and 0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 12 and 24 hours post dose
Clearance of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. Clearance obtained after oral dose (apparent oral clearance) is influenced by the fraction of the dose absorbed. Clearance was estimated from population pharmacokinetic (PK) modeling. Drug clearance is a quantitative measure of the rate at which a drug substance is removed from the blood. Clearance obtained after oral dose (apparent oral clearance) is influenced by the fraction of the dose absorbed.
次要结局
- Number of Participants With Serum Creatinine Levels More Than (>) 1.3 Times the Upper Limit of Normal(From baseline up to Day 4)
- Number of Participants With Estimated Glomerular Filtration Rate (GFR) Less Than (<) 60 mL/Min/1.73 m^2(From baseline up to Day 4)
