Ph1 Study of Valortim and Doxycycline in Humans

Anthrax Clinical Trial

Official title: A Phase I, Single Blind, Randomized, Placebo Controlled, Drug Interaction Study of Intravenous (IV) Valortim® and Intravenous (IV) Doxycycline in Healthy Normal Subjects

Status Terminated

Clinical Trial Summary

The purpose of this study is to evaluate the safety and tolerability of short-term dosing of IV doxycycline when administered concomitantly with IV Valortim in normal healthy human subjects.

Clinical Trial Description

Valortim (MDX-1303) is a fully human monoclonal antibody (hmAb) with a high affinity for Bacillus anthracis protective antigen (PA). Valortim is designed to target PA, which is one of three plasmid-encoded proteins that together form the toxins released by B. anthracis. Individually, these proteins (protective antigen (PA), lethal factor (LF) and edema factor (EF)) are inactive. Toxic effects require the transport of LF and EF into the host cell, mediated by the activity of PA. Valortim binds to PA and interferes with the activity of the toxins. Based on both non-clinical and clinical data, Valortim may have utility for the pre- and post-exposure prophylaxis of individuals exposed to, or at risk of exposure to, B. anthracis and for the treatment of individuals displaying symptoms of inhalational anthrax. Because the treatment of inhalational anthrax includes the use of antibiotics such as tetracyclines, it is necessary to demonstrate that there are no adverse interactions between newer therapeutic interventions and these medications. The purpose of this study is to assess the pharmacokinetics of doxycycline (a commonly used tetracycline for both treatment and post-exposure prophylaxis of anthrax) and Valortim following co-administration, as well as the safety and tolerability of these medications when administered concomitantly. These data are intended to support the use of Valortim as a treatment for inhalational anthrax. ;

Study Design

Allocation: Randomized, Endpoint Classification: Safety Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Subject), Primary Purpose: Treatment

Related Conditions & MeSH terms

• Anthrax

• NCT number: NCT00964834
• Study type: Interventional
• Source: PharmAthene, Inc.
• Status: Terminated
• Phase: Phase 1
• Start date: July 2009
• Completion date: December 2009