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A Randomized Comparative Pharmacokinetic Study of Oral Ganciclovir After Treatment With Intravenous Ganciclovir for Cytomegalovirus Gastrointestinal Disease in AIDS Patients

HIV Infections Clinical Trial

Official title:
A Randomized Comparative Pharmacokinetic Study of Oral Ganciclovir After Treatment With Intravenous Ganciclovir for Cytomegalovirus Gastrointestinal Disease in AIDS Patients

Clinical Trial Summary

To determine the oral bioavailability of three dose levels of oral ganciclovir given with and without glutamic acid hydrochloride in patients with cytomegalovirus (CMV) GI disease, and to compare the bioavailability of these regimens to that of standard intravenous (IV) ganciclovir. Long-term ganciclovir maintenance therapy has been recommended for CMV colitis or esophagitis following induction treatment. Oral ganciclovir is a likely candidate for maintenance because of its possible therapeutic value and ease of administration, but an optimum dose has not been determined. Since oral ganciclovir has a low bioavailability and is more soluble in an acid pH environment, the addition of glutamic acid hydrochloride may enhance gastrointestinal absorption of this drug.

Clinical Trial Description

Long-term ganciclovir maintenance therapy has been recommended for CMV colitis or esophagitis following induction treatment. Oral ganciclovir is a likely candidate for maintenance because of its possible therapeutic value and ease of administration, but an optimum dose has not been determined. Since oral ganciclovir has a low bioavailability and is more soluble in an acid pH environment, the addition of glutamic acid hydrochloride may enhance gastrointestinal absorption of this drug. All patients receive an induction regimen of IV ganciclovir administered twice daily for 21 to 42 (Per Amendment 3/4/95) days. A permanent venous catheter is implanted for the induction therapy. If clinically improved following induction, patients are then randomized to receive one of three doses of oral ganciclovir, given first without and then with oral glutamic acid hydrochloride, every 8 hours until they reach a steady state. PER AMENDMENT 3/14/95: After subjects have reached steady state with oral ganciclovir and glutamic acid hydrochloride then PK samples will be taken. Subjects will continue the dosing regimen they were assigned to (glutamic acid hydrochloride will be added if it resulted in at least 33% increased bioavailability) for up to 12 months or until relapse of CMV GI disease is documented. Subjects will be followed at monthly intervals for safety evaluation and for evidence of CMV GI relapse. Subjects who have clinical symptoms of relapse will undergo repeat endoscopy or colonoscopy to document the relapse. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00000768
Study type Interventional
Source National Institute of Allergy and Infectious Diseases (NIAID)
Contact
Status Completed
Phase Phase 1
Completion date August 1998
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