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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01244282
Other study ID # P08085
Secondary ID
Status Completed
Phase Phase 1
First received November 17, 2010
Last updated June 9, 2016
Start date November 2010
Est. completion date April 2011

Study information

Verified date June 2016
Source Merck Sharp & Dohme Corp.
Contact n/a
Is FDA regulated No
Health authority Singapore: Health Sciences Authority
Study type Interventional

Clinical Trial Summary

This study will identify a dose of ferumoxytol that can reliably detect changes in blood flow/volume in response to non-drug stimuli. The study will determine whether signal detection for functional magnetic resonance imaging (fMRI) using ferumoxytol is better than that for blood oxygen level-dependent (BOLD) fMRI in response to sensory stimulation. The following procedures will be conducted in each of two study periods: arterial spin labeling (ASL) imaging study with increasing exposure to carbon dioxide (CO2); BOLD fMRI study with sensory stimulation; MRI studies with sensory stimulation in the presence of increasing doses of ferumoxytol; MRI study with increasing exposure to CO2 in the presence of ferumoxytol. There will be a 3-week interval between the two study periods. The study will enroll 8 subjects, but an additional 4 subjects are permitted to enroll to preserve study power.


Description:

Study Design: Translational Medicine - Imaging Platform Development


Recruitment information / eligibility

Status Completed
Enrollment 10
Est. completion date April 2011
Est. primary completion date February 2011
Accepts healthy volunteers Accepts Healthy Volunteers
Gender Male
Age group 21 Years to 45 Years
Eligibility Inclusion Criteria:

- Participant weighs approximately 55-75 kg and has a Body Mass Index (BMI) of 18-25 kg/m^2

- Participant is in good health

- Participant is a nonsmoker and/or has not used nicotine or nicotine-containing products for at least 6 months

Exclusion Criteria:

- Participant has a contraindication to MRI including cardiac pacemaker, brain aneurysm clip, implanted neurostimulator, insulin pump, cochlear implant, metal slivers in the eyes, or any other MRI-incompatible metal implants that cannot be safely removed

- Participant has a condition that would limit his ability to complete MRI procedures, such as claustrophobia or chronic back pain

- Participant plans to undergo MRI studies in the 3 months following the post-study visit

- Participant has a history of hemochromatosis or other conditions of iron overload or disease of iron metabolism

- Participant has a known sensitivity to ferumoxytol or iron-containing products or has a history of severe allergies, anaphylactic reaction, or intolerance to drugs and/or foods

- Participant has a history of stroke, chronic seizures, or major neurological disorder

- Participant is unable to refrain from the use of any medication, including prescription and non-prescription drugs or herbal remedies from approximately 2 weeks prior to the first dose of ferumoxytol until the post-study visit

- Participant has a history of significant head injury/trauma with loss of consciousness lasting for 15 minutes and one or more of the following: a) recurring seizures resulting from head injury; b) persistent neurological or cognitive sequelae of the injury; c) cognitive rehabilitation following the injury

Study Design

Allocation: Non-Randomized, Endpoint Classification: Pharmacodynamics Study, Intervention Model: Single Group Assignment, Masking: Open Label


Related Conditions & MeSH terms

  • Functional Magnetic Resonance Imaging

Intervention

Procedure:
fMRI with sensory stimulation
BOLD fMRI study with sensory stimulation followed by fMRI in the presence of increasing concentrations of ferumoxytol (Ferahemeā„¢)

Locations

Country Name City State
n/a

Sponsors (1)

Lead Sponsor Collaborator
Merck Sharp & Dohme Corp.

Outcome

Type Measure Description Time frame Safety issue
Primary Magnitude of the MRI percent signal change in response to sensory stimulation without administration of ferumoxytol (BOLD fMRI) 45 minutes after initiation of imaging procedures No
Primary Magnitude of the MRI percent signal change in response to sensory stimulation following administration of the first dose of ferumoxytol (250 mg) 55 minutes after initiation of imaging procedures No
Primary Magnitude of the MRI percent signal change in response to sensory stimulation following administration of the second dose of ferumoxytol (100 mg, total cumulative dose of 350 mg) 70 minutes after initiation of imaging procedures No
Primary Magnitude of the MRI percent signal change in response to sensory stimulation following administration of the third dose of ferumoxytol (180 mg, total cumulative dose of 510 mg) 85 minutes after initiation of imaging procedures No
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