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Positron Emission Tomography (PET) Study of Brain Calcitonin Gene-Related Peptide (CGRP) Receptor Occupancy After Telcagepant Administration (MK-0974-067)

Migraine Clinical Trial

Official title:
A Three-Part Positron Emission Tomography Study of Brain CGRP Receptor Occupancy Levels Following Administration of MK-0974, Using [11C]MK-4232 as an Imaging Agent

Clinical Trial Summary

The purpose of this study is to determine the receptor occupancy (RO) associated with telcagepant (MK-0974) administration based on displacement of [11C]MK-4232 from the CGRP receptors in the brain using PET. The study enrolled healthy participants (Part I) and migraine patients (Part III). Due to a protocol amendment, study Part II was not conducted.

Clinical Trial Description

For the 1120 mg (i.e., maximal) telcagepant dose, [11C]MK-4232 was administered and PET scan was started ~3 hours post telcagepant to coincide with the Tmax of the 1120 mg dose. For the 140 mg (i.e., therapeutic) telcagepant dose, [11C]MK-4232 was administered and PET scan was started ~2 hours post telcagepant to correspond with the timing of clinical efficacy measurements of telcagepant for migraine treatment in Phase III studies. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT01315847
Study type Interventional
Source Merck Sharp & Dohme Corp.
Contact
Status Completed
Phase Phase 1
Start date January 14, 2010
Completion date July 26, 2011
View Details
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