NCT02936531

Brief Summary

In this study the investigators aim to identify and characterize a potential neurophysiological biomarker by mapping functional networks of brain activity (Brain Network Activation, BNA) based on analysis of evoked response potential (ERP) signals in both asymptomatic FMR1 premutation carriers and in patients with various stages of FXTAS. Additionally correlations will be studied between these BNA scores and demographics (gender, age and disease duration) as well as genetic mutation and clinical scores.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
150

participants targeted

Target at P50-P75 for all trials

Timeline
Completed

Started Nov 2016

Longer than P75 for all trials

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

October 15, 2016

Completed
3 days until next milestone

First Posted

Study publicly available on registry

October 18, 2016

Completed
14 days until next milestone

Study Start

First participant enrolled

November 1, 2016

Completed
5.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2021

Completed
1 year until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2022

Completed
Last Updated

March 17, 2021

Status Verified

March 1, 2021

Enrollment Period

5.1 years

First QC Date

October 15, 2016

Last Update Submit

March 16, 2021

Conditions

Keywords

evoked response potentialERPBrain Network ActivationBNABiomarker

Outcome Measures

Primary Outcomes (1)

  • BNA SCORE

    1 day

Secondary Outcomes (4)

  • FXTAS SCORE

    1 day

  • Posture and gait data

    1 day

  • NeuroTrax™ Computerized Cognitive Tests

    1 day

  • MoCA score

    1 day

Study Arms (2)

FXTAS

Patients positive for FMR1 premutation and meet diagnostic criteria for FXTAS

FMR1 premutation asymptomatic

Patients positive for FMR1 premutation and do not meet diagnostic criteria for FXTAS

Eligibility Criteria

Age50 Years - 80 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodProbability Sample
Study Population

Men and women above the age of 50, that are FMR1 premutation carriers (55-200 CGG repeats), both symptomatic (with possible or probable FXTAS) or neurologically asymptomatic.

You may qualify if:

  • FMR1 premutation carriers (55-200 CGG repeats)
  • symptomatic (with possible or probable FXTAS) or neurologically asymptomatic.

You may not qualify if:

  • Severe disability unable to perform tests
  • treatment with neuroleptics
  • other brain disease or pathology
  • deafness or blindness

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Movement Disorders Institute, Sheba Medical center

Ramat Gan, 5265601, Israel

RECRUITING

Related Publications (14)

  • Leehey MA, Berry-Kravis E, Goetz CG, Zhang L, Hall DA, Li L, Rice CD, Lara R, Cogswell J, Reynolds A, Gane L, Jacquemont S, Tassone F, Grigsby J, Hagerman RJ, Hagerman PJ. FMR1 CGG repeat length predicts motor dysfunction in premutation carriers. Neurology. 2008 Apr 15;70(16 Pt 2):1397-402. doi: 10.1212/01.wnl.0000281692.98200.f5. Epub 2007 Dec 5.

    PMID: 18057320BACKGROUND
  • Hagerman RJ, Leehey M, Heinrichs W, Tassone F, Wilson R, Hills J, Grigsby J, Gage B, Hagerman PJ. Intention tremor, parkinsonism, and generalized brain atrophy in male carriers of fragile X. Neurology. 2001 Jul 10;57(1):127-30. doi: 10.1212/wnl.57.1.127.

    PMID: 11445641BACKGROUND
  • Hagerman PJ, Hagerman RJ. The fragile-X premutation: a maturing perspective. Am J Hum Genet. 2004 May;74(5):805-16. doi: 10.1086/386296. Epub 2004 Mar 29.

    PMID: 15052536BACKGROUND
  • Jacquemont S, Hagerman RJ, Leehey M, Grigsby J, Zhang L, Brunberg JA, Greco C, Des Portes V, Jardini T, Levine R, Berry-Kravis E, Brown WT, Schaeffer S, Kissel J, Tassone F, Hagerman PJ. Fragile X premutation tremor/ataxia syndrome: molecular, clinical, and neuroimaging correlates. Am J Hum Genet. 2003 Apr;72(4):869-78. doi: 10.1086/374321. Epub 2003 Mar 12.

    PMID: 12638084BACKGROUND
  • Jacquemont S, Farzin F, Hall D, Leehey M, Tassone F, Gane L, Zhang L, Grigsby J, Jardini T, Lewin F, Berry-Kravis E, Hagerman PJ, Hagerman RJ. Aging in individuals with the FMR1 mutation. Am J Ment Retard. 2004 Mar;109(2):154-64. doi: 10.1352/0895-8017(2004)1092.0.CO;2.

    PMID: 15000674BACKGROUND
  • Rogers C, Partington MW, Turner GM. Tremor, ataxia and dementia in older men may indicate a carrier of the fragile X syndrome. Clin Genet. 2003 Jul;64(1):54-6. doi: 10.1034/j.1399-0004.2003.00089.x.

    PMID: 12791039BACKGROUND
  • Hall DA, Howard K, Hagerman R, Leehey MA. Parkinsonism in FMR1 premutation carriers may be indistinguishable from Parkinson disease. Parkinsonism Relat Disord. 2009 Feb;15(2):156-9. doi: 10.1016/j.parkreldis.2008.04.037. Epub 2008 Jun 20.

    PMID: 18565783BACKGROUND
  • Brunberg JA, Jacquemont S, Hagerman RJ, Berry-Kravis EM, Grigsby J, Leehey MA, Tassone F, Brown WT, Greco CM, Hagerman PJ. Fragile X premutation carriers: characteristic MR imaging findings of adult male patients with progressive cerebellar and cognitive dysfunction. AJNR Am J Neuroradiol. 2002 Nov-Dec;23(10):1757-66.

    PMID: 12427636BACKGROUND
  • Grigsby J, Brega AG, Leehey MA, Goodrich GK, Jacquemont S, Loesch DZ, Cogswell JB, Epstein J, Wilson R, Jardini T, Gould E, Bennett RE, Hessl D, Cohen S, Cook K, Tassone F, Hagerman PJ, Hagerman RJ. Impairment of executive cognitive functioning in males with fragile X-associated tremor/ataxia syndrome. Mov Disord. 2007 Apr 15;22(5):645-50. doi: 10.1002/mds.21359.

    PMID: 17266074BACKGROUND
  • Ray S, Miller M, Karalunas S, Robertson C, Grayson DS, Cary RP, Hawkey E, Painter JG, Kriz D, Fombonne E, Nigg JT, Fair DA. Structural and functional connectivity of the human brain in autism spectrum disorders and attention-deficit/hyperactivity disorder: A rich club-organization study. Hum Brain Mapp. 2014 Dec;35(12):6032-48. doi: 10.1002/hbm.22603. Epub 2014 Aug 13.

    PMID: 25116862BACKGROUND
  • Karalunas SL, Fair D, Musser ED, Aykes K, Iyer SP, Nigg JT. Subtyping attention-deficit/hyperactivity disorder using temperament dimensions: toward biologically based nosologic criteria. JAMA Psychiatry. 2014 Sep;71(9):1015-24. doi: 10.1001/jamapsychiatry.2014.763.

    PMID: 25006969BACKGROUND
  • O'Keefe JA, Robertson-Dick E, Dunn EJ, Li Y, Deng Y, Fiutko AN, Berry-Kravis E, Hall DA. Characterization and Early Detection of Balance Deficits in Fragile X Premutation Carriers With and Without Fragile X-Associated Tremor/Ataxia Syndrome (FXTAS). Cerebellum. 2015 Dec;14(6):650-62. doi: 10.1007/s12311-015-0659-7.

    PMID: 25763861BACKGROUND
  • Michel CM, Thut G, Morand S, Khateb A, Pegna AJ, Grave de Peralta R, Gonzalez S, Seeck M, Landis T. Electric source imaging of human brain functions. Brain Res Brain Res Rev. 2001 Oct;36(2-3):108-18. doi: 10.1016/s0165-0173(01)00086-8.

    PMID: 11690607BACKGROUND
  • Caviness JN, Adler CH, Hentz JG, Shill HA, Evidente VG, Driver-Dunckley ED, Sabbagh MN, Sue L, Beach TG. Incidental Lewy body disease: electrophysiological findings suggesting pre-clinical Lewy body disorders. Clin Neurophysiol. 2011 Dec;122(12):2426-32. doi: 10.1016/j.clinph.2011.03.033. Epub 2011 May 26.

    PMID: 21616709BACKGROUND

MeSH Terms

Conditions

Fragile X Tremor Ataxia Syndrome

Study Officials

  • Sharon Hassin, MD

    Movement Disorders Instuitute, Sheba Medical Center

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Sharon Hassin, MD

CONTACT

Tsvia Fay-Karmon, MD

CONTACT

Study Design

Study Type
observational
Observational Model
CASE ONLY
Time Perspective
CROSS SECTIONAL
Sponsor Type
OTHER GOV
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Director, Movement Disorders Institute

Study Record Dates

First Submitted

October 15, 2016

First Posted

October 18, 2016

Study Start

November 1, 2016

Primary Completion

December 1, 2021

Study Completion

December 1, 2022

Last Updated

March 17, 2021

Record last verified: 2021-03

Data Sharing

IPD Sharing
Will share

Locations