Pharmacokinetic Study Of Valaciclovir Hydrochloride Tablets
- Conditions
- Virus Diseases
- Registration Number
- NCT00343278
- Lead Sponsor
- GlaxoSmithKline
- Brief Summary
Valaciclovir (VACV), the L-valyl ester prodrug of aciclovir (ACV), is extensively converted to ACV and L-valine after oral administration. In subjects with normal renal function, ACV is predominantly eliminated unchanged in the urine, with a small proportion metabolized to 9-carboxymethoxymethylguanine (CMMG). The metabolism of ACV to CMMG is thought to involve aldehyde dehydrogenase (ALDH). On the basis of a high proportion of the Japanese population having low-activity ALDH, it can be hypothesized that the conversion of ACV to CMMG is decreased, thereby leading, in patients with renal impairment, to higher plasma concentrations of ACV. This pilot study was conducted to investigate potential relationships between genetic polymorphisms of ALDH2, an isozyme of ALDH, and the plasma pharmacokinetics (PK) of VACV, ACV and CMMG in subjects with end-stage renal disease on hemodialysis.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 18
Not provided
Not provided
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- SINGLE_GROUP
- Primary Outcome Measures
Name Time Method - The pharmacokinetic parameters for VACV, ACV and CMMG - Relationship between ALDH2 genotypes and the pharmacokinetics of VACV, ACV and CMMG in blood
- Secondary Outcome Measures
Name Time Method - Change in blood ACV and CMMG concentrations after a 4-hour hemodialysis session - Safety (adverse events occurring during the study, clinical laboratory tests)