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Epilepsy, Temporal LobePhase 2NCT06483061

Enhanced MRI Imaging in Healthy Participants and Participants With Epilepsy

A Phase 2 study testing Ferumoxytol in people with Epilepsy, Temporal Lobe, run by University of Alberta at 1 site in Canada.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

Temporal lobe epilepsy (TLE) is a common type of epilepsy and one of the most likely to not be controlled by medication. For patients who do not respond to medication, surgery can result in a cure of seizures. Read more about this study

Who is it for?
Ages 18 to 64 yearsHealthy volunteers can take part
Conditions the study is for
Epilepsy, Temporal Lobe
What is being tested?
Ferumoxytol
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
50 participants
Where
1 siteCanada
Study dates
1 May 2025to 1 Sep 2029
Phase
Phase 2
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 64 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Healthy controls aged 18-64.
  • Patients with temporal lobe epilepsy aged 18-64 and hippocampal sclerosis demonstrated on clinical MRI scan

Who cannot join

  • Non-English speaking participants will be excluded as we cannot provide translation services.
  • Inability to provide informed consent.
  • Contraindications to MRI Age < 17 years / >65 years
  • Weight > 127.5kg (which is the maximum weight of which a single 510mg vial of Ferumoxytol would accommodate a 4mg/kg dose).
  • Women of childbearing capacity with a positive pregnancy test
  • Women who are actively breast feeding
  • Contraindication of Ferumoxytol -known hypersensitivity to Feraheme or any of its components -History of allergic reaction to any intravenous iron product

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Sandy Arcand contact

7809109585

sarcand@ualberta.ca

Canada1 site, 1 recruiting
  • Peter S. Allen MRI Unit

    Edmonton, Alberta, T6G 2R3

    Sandy Arcand, 7809109585, sarcand@ualberta.ca

    Donald Gross, MD

    Recruiting

Other trials in Canada

About this study

Official title: Ferumoxytol Enhanced Hippocampal Vascular Imaging in Epilepsy

Temporal lobe epilepsy (TLE) is a common type of epilepsy and one of the most likely to not be controlled by medication. For patients who do not respond to medication, surgery can result in a cure of seizures. Given the fact that around 50% of patients who undergo surgery are seizure free at 10 years there is a need to improve the understanding of what factors best predict surgical outcomes in order to improve our ability to select candidates for surgery.

The demonstration of abnormalities in the temporal lobe on MRI is one of the best predictors of seizure free surgical outcomes. Recent studies suggest that changes in specific subregions of the hippocampus could be the strongest predictors of surgical success, however the small size of these regions, (millimeters) make them very difficult to study with standard clinical MRI.

Recently new MRI methods have been developed at Wayne State University to image hippocampal blood vessels using ferumoxytol infusion. Feraheme (ferumoxytol) is a drug that is approved in the United States for the treatment of iron deficiency anemia and is currently being studied as an MRI contrast agent in 8 active clinical trials in the United States as well as a Parkinson's Disease study in Canada.

Read the detailed description

Hippocampal sclerosis is the most common pathological finding in temporal lobe epilepsy.

While CA1 and CA4 subregions are typically affected, considerable variability in the involvement of the different subregions has been recognized between patients with specific hippocampal subfield pathology being demonstrated to predict surgical outcomes in medically refractory patients. Developing novel imaging biomarkers for hippocampal subfield pathology that can be obtained in vivo has the potential to allow more accurate prediction of surgical outcomes prior to surgery.

A major challenge in studying hippocampal subregions is the small size of the structures which are often smaller than the resolution of conventional MRI techniques. Cerebral blood vessels can be visualized with MRI using a variety of methods, some which do not require MRI contrast and others that do. The advantage of non-contrast methods is that subjects do not require intravenous contrast injections while the disadvantage is that the non-contrast methods are not capable of visualizing smaller vessels.

Recently high-resolution vascular imaging of the hippocampus using ferumoxytol as an MRI contrast agent has been reported by researchers at Wayne State University. It is believed that this method would provide the detail required to address the hypothesis that the microvasculature of hippocampal subregions is disrupted in temporal lobe epilepsy.

OBJECTIVES

The Specific Aims of this study are:

Aim 1: Implement ferumoxytol enhanced MRI imaging of cerebral vasculature with similar quality as compared to work conducted at Wayne State University. Aim 2: Compare hippocampal microvasculature density of hippocampal subregions between participants with TLE and hippocampal sclerosis and control subjects.

HYPOTHESES

  1. Successful acquisition of susceptibility weighted imaging (SWI) vascular imaging, with similar quality as compared to work conducted at Wayne State University, will be possible.
  2. Participants with temporal lobe epilepsy and hippocampal sclerosis will demonstrate reduced microvasculature in hippocampal subfields that will correlate with previously reported regional MRI changes.

METHODS /DATA ANALYSIS

AIM 1:

10 control subjects will be scanned using the Wayne State University SWI acquisition protocol. Participants will receive ferumoxytol diluted with normal saline administered by a Registered Nurse using an MRI compatible IV infusion pump. Any adverse events during the infusion / scan will be documented and compared to previous ferumoxytol MRI safety data. Data quality will be assessed both qualitatively and quantitatively. Maps of the hippocampal microvasculature will be obtained and reviewed in order to confirm that the quality of the maps is comparable to the Wayne State University data. Fractional vessel density (FVD) of microvasculature, major arteries and major veins will be obtained, and comparisons will be made to ensure that the mean values and standard deviations are comparable.

AIM 2:

20 control subjects, and 20 participants with temporal lobe epilepsy and hippocampal sclerosis, will be studied. Participants will receive ferumoxytol diluted with normal saline administered by a Registered Nurse using a MRI compatible IV infusion pump. Any adverse events will be documented.

Microvasculature density of hippocampal subregions will be evaluated based on the same image analysis approach as the Wayne State University Group.

Being tested
Ferumoxytol
Medical subject headings
Epilepsy, Temporal Lobe

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • FerumoxytolDrug

    Also called Feraheme

    Ferumoxytol will be injected to enhance MRI images

Study groups in NCT06483061
Study groupRoleWhat they receive
Ferumoxytol (Feraheme)ExperimentalEach participant and control will receive Ferumoxytol (Feraheme) 4 mg/kg diluted with 60ml normal saline, administered at 150-200ml/Hr by a registered nurse using a MRI compatible IV infusion pump
Receives: Drug: Ferumoxytol

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Ferumoxytol enhanced cerebral vasculature imaging

    Comparison of MRI image acquisition quality with existing images obtained using an established imaging protocol

    Measured: One injection will be used while the participant is having an MRI

  2. Ferumoxytol enhanced cerebral vasculature imaging

    Comparison of microvasculature density of hippocampal subregions between participants with TLE and hippocampal sclerosis and control subjects

    Measured: One injection will be used while the participant is having an MRI

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted1 Jul 2024
  2. Study start1 May 2025
  3. Primary completion1 Sep 2029 (estimated)
  4. Study completion1 Sep 2029 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
50 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06483061
Sponsor's protocol ID
Pro00132487
Status last verified
May 2026
First submitted
25 Jun 2024
Last updated
8 May 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Publications

  • Finn JP, Nguyen KL, Hu P. Ferumoxytol vs. Gadolinium agents for contrast-enhanced MRI: Thoughts on evolving indications, risks, and benefits. J Magn Reson Imaging. 2017 Sep;46(3):919-923. doi: 10.1002/jmri.25580. Epub 2017 Feb 3. No abstract available.

    PubMed 28160356
  • Vasanawala SS, Nguyen KL, Hope MD, Bridges MD, Hope TA, Reeder SB, Bashir MR. Safety and technique of ferumoxytol administration for MRI. Magn Reson Med. 2016 May;75(5):2107-11. doi: 10.1002/mrm.26151. Epub 2016 Feb 18.

    PubMed 26890830
  • Adams LC, Jayapal P, Ramasamy SK, Morakote W, Yeom K, Baratto L, Daldrup-Link HE. Ferumoxytol-Enhanced MRI in Children and Young Adults: State of the Art. AJR Am J Roentgenol. 2023 Apr;220(4):590-603. doi: 10.2214/AJR.22.28453. Epub 2022 Oct 5.

    PubMed 36197052
  • Toth GB, Varallyay CG, Horvath A, Bashir MR, Choyke PL, Daldrup-Link HE, Dosa E, Finn JP, Gahramanov S, Harisinghani M, Macdougall I, Neuwelt A, Vasanawala SS, Ambady P, Barajas R, Cetas JS, Ciporen J, DeLoughery TJ, Doolittle ND, Fu R, Grinstead J, Guimaraes AR, Hamilton BE, Li X, McConnell HL, Muldoon LL, Nesbit G, Netto JP, Petterson D, Rooney WD, Schwartz D, Szidonya L, Neuwelt EA. Current and potential imaging applications of ferumoxytol for magnetic resonance imaging. Kidney Int. 2017 Jul;92(1):47-66. doi: 10.1016/j.kint.2016.12.037. Epub 2017 Apr 20.

    PubMed 28434822
  • Nguyen KL, Yoshida T, Kathuria-Prakash N, Zaki IH, Varallyay CG, Semple SI, Saouaf R, Rigsby CK, Stoumpos S, Whitehead KK, Griffin LM, Saloner D, Hope MD, Prince MR, Fogel MA, Schiebler ML, Roditi GH, Radjenovic A, Newby DE, Neuwelt EA, Bashir MR, Hu P, Finn JP. Multicenter Safety and Practice for Off-Label Diagnostic Use of Ferumoxytol in MRI. Radiology. 2019 Dec;293(3):554-564. doi: 10.1148/radiol.2019190477. Epub 2019 Oct 22.

    PubMed 31638489
  • Buch S, Chen Y, Jella P, Ge Y, Haacke EM. Vascular mapping of the human hippocampus using Ferumoxytol-enhanced MRI. Neuroimage. 2022 Apr 15;250:118957. doi: 10.1016/j.neuroimage.2022.118957. Epub 2022 Feb 2.

    PubMed 35122968
  • Treit S, Little G, Steve T, Nowacki T, Schmitt L, Wheatley BM, Beaulieu C, Gross DW. Regional hippocampal diffusion abnormalities associated with subfield-specific pathology in temporal lobe epilepsy. Epilepsia Open. 2019 Sep 13;4(4):544-554. doi: 10.1002/epi4.12357. eCollection 2019 Dec.

    PubMed 31819910
  • Adel SAA, Treit S, Abd Wahab W, Little G, Schmitt L, Wilman AH, Beaulieu C, Gross DW. Longitudinal hippocampal diffusion-weighted imaging and T2 relaxometry demonstrate regional abnormalities which are stable and predict subfield pathology in temporal lobe epilepsy. Epilepsia Open. 2023 Mar;8(1):100-112. doi: 10.1002/epi4.12679. Epub 2022 Dec 11.

    PubMed 36461649
  • Blumcke I, Pauli E, Clusmann H, Schramm J, Becker A, Elger C, Merschhemke M, Meencke HJ, Lehmann T, von Deimling A, Scheiwe C, Zentner J, Volk B, Romstock J, Stefan H, Hildebrandt M. A new clinico-pathological classification system for mesial temporal sclerosis. Acta Neuropathol. 2007 Mar;113(3):235-44. doi: 10.1007/s00401-006-0187-0. Epub 2007 Jan 13.

    PubMed 17221203
  • Blumcke I, Thom M, Aronica E, Armstrong DD, Bartolomei F, Bernasconi A, Bernasconi N, Bien CG, Cendes F, Coras R, Cross JH, Jacques TS, Kahane P, Mathern GW, Miyata H, Moshe SL, Oz B, Ozkara C, Perucca E, Sisodiya S, Wiebe S, Spreafico R. International consensus classification of hippocampal sclerosis in temporal lobe epilepsy: a Task Force report from the ILAE Commission on Diagnostic Methods. Epilepsia. 2013 Jul;54(7):1315-29. doi: 10.1111/epi.12220. Epub 2013 May 20.

    PubMed 23692496

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Ferumoxytol in people with Epilepsy, Temporal Lobe, run by University of Alberta at 1 site in Canada.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 8 May 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Canada. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Sandy Arcand (7809109585, sarcand@ualberta.ca), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Ferumoxytol enhanced cerebral vasculature imaging (time frame: One injection will be used while the participant is having an MRI). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06483061, which also lists 10 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 May 2026.

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