Pharmacokinetic Study Of Valaciclovir Hydrochloride Tablets - Full Text View

Sponsor:	GlaxoSmithKline
Information provided by:	GlaxoSmithKline
ClinicalTrials.gov Identifier:	NCT00343278

Purpose

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.

Condition	Intervention	Phase
Renal Impairment	Drug: Valaciclovir Hydrochloride	Phase IV

Study Type:	Interventional
Study Design:	Treatment, Non-Randomized, Open Label, Single Group Assignment, Pharmacokinetics Study
Official Title:	Post-Marketing Clinical Study of Valaciclovir Hydrochloride Tablets -Single Oral Dose Study in Hemodialysis Patients-

Resource links provided by NLM:

MedlinePlus related topics: Dialysis Kidney Failure

Drug Information available for: Valaciclovir Valacyclovir hydrochloride

U.S. FDA Resources

Further study details as provided by GlaxoSmithKline:

Primary Outcome Measures:

- 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:

- Change in blood ACV and CMMG concentrations after a 4-hour hemodialysis session - Safety (adverse events occurring during the study, clinical laboratory tests)

Estimated Enrollment:	18
Study Start Date:	July 2005

Eligibility

Ages Eligible for Study:	20 Years and older
Genders Eligible for Study:	Both
Accepts Healthy Volunteers:	No

Criteria

Inclusion criteria:

Japanese subjects with chronic renal failure undergoing hemodialysis regularly three times a week for at least 12 weeks prior to the start of the study.

Exclusion criteria:

Subjects with current alcohol dependence.
Subjects with gastrointestinal dysfunction that may affect drug absorption.
Subjects who have received an organ transplant (However, subjects with a corneal transplant or any other organ transplant that may not affect the objectives of the study will be eligible for inclusion in this study).

Contacts and Locations

Please refer to this study by its ClinicalTrials.gov identifier: NCT00343278

Sponsors and Collaborators

GlaxoSmithKline

Investigators

Study Director:

GSK Clinical Trials, MD

GlaxoSmithKline

More Information

No publications provided

Responsible Party:	GSK ( Study Director )
Study ID Numbers:	104689
Study First Received:	June 21, 2006
Last Updated:	October 13, 2008
ClinicalTrials.gov Identifier:	NCT00343278 History of Changes
Health Authority:	Japan: Ministry of Health, Labor and Welfare

Keywords provided by GlaxoSmithKline:

Valaciclovir Hydrochloride
pharmacokinetics
hemodialysis patient
Japanese
ALDH

Additional relevant MeSH terms:

Valacyclovir
Anti-Infective Agents
Acyclovir

Therapeutic Uses
Antiviral Agents
Pharmacologic Actions

ClinicalTrials.gov processed this record on February 08, 2010