Cognitive ImpairmentNCT03335696
Predicting MRI Abnormalities With Longitudinal Data of the Whitehall II Substudy
An observational study of Cognitive Impairment and Dementia, run by University of Oxford at 1 site in United Kingdom.
Trial summary
Follow-up study within the Whitehall II study, selecting 800 participants for further neuropsychological, clinical and imaging (MRI) examinations to examine brain structure and function in relation to age-related diseases and the modifiable and non-modifiable factors affecting resilience against and vulnerability to… Read more about this study
- Who is it for?
- Any ageHealthy volunteers can take part
- Conditions the study is for
- Cognitive Impairment, Dementia, Affective Disorders
- How many people
- 800 participants
- Where
- 1 siteUnited Kingdom
- Study dates
- 1 Jan 2012to 30 Jun 2017
- Phase
- Observational
- Are there results?
- None posted in the registry
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 Any age
- All sexes
- Healthy volunteers accepted
- Child, Adult, Older adult
Study population: Randomly selected from phase 11 of the an occupational cohort recruited from 1985 for the Whitehall II study (Marmot M, Brunner E. Cohort Profile: the Whitehall II study. Int J Epidemiol 2005;34(2):251-6).
Who may be able to join
- Member of Whitehall II cohort attending at UCL for phase 11
Who cannot join
- Not suitable for MRI, travelling to Oxford, seriously physically ill
Trial locations and contacts
1 site in 1 country.
About this study
Follow-up study within the Whitehall II study, selecting 800 participants for further neuropsychological, clinical and imaging (MRI) examinations to examine brain structure and function in relation to age-related diseases and the modifiable and non-modifiable factors affecting resilience against and vulnerability to adverse brain changes.
Read the detailed description
A total of 6035 civil servants participated in the WHII Phase 11 clinical examination in 2012-2013. A random sample of 800 of these participants was included in a sub-study comprising an MRI brain scan, a detailed clinical and cognitive assessment, and collection of blood and buccal mucosal samples for the characterisation of immune function and associated measures. Data collection for this sub-study started in 2012 and was completed by in 2016. The participants, for whom social and health records have been collected since 1985, were between 60-85 years of age at the time the MRI study started. The pre-specified clinical and cognitive assessment protocols, the state-of-the-art MRI sequences and latest pipelines for analyses of this sub-study have been published and are attached to this application.
- Conditions
- Cognitive Impairment, Dementia, Affective Disorders
- Keywords
- Epidemiology, Magnetic resonance imaging, Diffusion tensor imaging, White matter, Functional MRI, Connectome, Resting state brain networks, Neuropsychology
- Medical subject headings
- Cognitive Dysfunction, Dementia, Mood Disorders
What is being measured
The primary outcome is the main question the study is designed to answer.
Neuropsychological measure 1
National Adult Reading Test (premorbid intellectual ability)
Measured: 2012-2016
Neuropsychological measure 2
Montreal Cognitive Assessment (MoCA)
Measured: 2012-2016
Neuropsychological measure 3
Rey Complex Figure copy and delayed recall (visual episodic memory)
Measured: 2012-2016
Neuropsychological measure 4
Hopkins Verbal Learning Test Revised (verbal episodic memory)
Measured: 2012-2016
Neuropsychological measure 5
CANTAB Simple and Choice Reaction Time (processing speed)
Measured: 2012-2016
Neuropsychological measure 6
WAIS-R Digit Symbol Test (processing speed)
Measured: 2012-2016
Neuropsychological measure 7
Trail Making Test A and B (processing speed/executive functioning)
Measured: 2012-2016
Neuropsychological measure 8
WAIS-R Digit Span forward and backwards (executive functioning)
Measured: 2012-2016
Neuropsychological measure 9
Graded Naming Test (semantic memory)
Measured: 2012-2016
MRI Measures 1
Siemens 3T - T1-weighted scan (MPRAGE) using FSL FIRST, FAST, and Freesurfer Volume extractions
Measured: 2012-2016
MRI Measures 2
Siemens 3T - T1-weighted scan (MPRAGE) using FSL GLM Voxel based analysis for grey matter density analysis
Measured: 2012-2016
MRI Measures 3
Siemens 3T - T2-weighted scan, clinical and FSL (BIANCA)-based rating of white matter changes
Measured: 2012-2016
MRI Measures 4
Siemens 3T Diffusion Tensor Images analyzed with Tract Based Spatial Statistics (TBSS)
Measured: 2012-2016
MRI Measures 5
Siemens 3T rs-fMRI analyzed with Multivariate Exploratory Linear Optimized Decomposition into Independent Components: MELODIC)
Measured: 2012-2016
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted8 Nov 2017
- Study start1 Jan 2012
- Primary completion30 Jun 2017
- Study completion30 Jun 2017
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (14)Papers the sponsor has linked to this study.
- Other trials for Cognitive ImpairmentStudies of the same condition, open and under way.
- More trials run by University of OxfordThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 800 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Oxford
- Sponsor type
- University, hospital or other
- Collaborators
- University College, London
- Responsible party
- Sponsor
- Investigators
- Klaus P Ebmeier, MD, Principal investigator, University of Oxford
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03335696
- Sponsor's protocol ID
- MSD/IDREC/C1/2011/71
- Status last verified
- Nov 2017
- First submitted
- 29 Sep 2017
- Last updated
- 5 Dec 2023
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: The study follows MRC data sharing policies. Data will be accessible from the authors after 2019.
Publications
Filippini N, Zsoldos E, Haapakoski R, Sexton CE, Mahmood A, Allan CL, Topiwala A, Valkanova V, Brunner EJ, Shipley MJ, Auerbach E, Moeller S, Ugurbil K, Xu J, Yacoub E, Andersson J, Bijsterbosch J, Clare S, Griffanti L, Hess AT, Jenkinson M, Miller KL, Salimi-Khorshidi G, Sotiropoulos SN, Voets NL, Smith SM, Geddes JR, Singh-Manoux A, Mackay CE, Kivimaki M, Ebmeier KP. Study protocol: The Whitehall II imaging sub-study. BMC Psychiatry. 2014 May 30;14:159. doi: 10.1186/1471-244X-14-159.
PubMed 24885374Allan CL, Zsoldos E, Filippini N, Sexton CE, Topiwala A, Valkanova V, Singh-Manoux A, Tabak AG, Shipley MJ, Mackay C, Ebmeier KP, Kivimaki M. Lifetime hypertension as a predictor of brain structure in older adults: cohort study with a 28-year follow-up. Br J Psychiatry. 2015 Apr;206(4):308-15. doi: 10.1192/bjp.bp.114.153536. Epub 2014 Dec 11.
PubMed 25497301Topiwala A, Allan CL, Valkanova V, Zsoldos E, Filippini N, Sexton CE, Mahmood A, Singh-Manoux A, Mackay CE, Kivimaki M, Ebmeier KP. Resilience and MRI correlates of cognitive impairment in community-dwelling elders. Br J Psychiatry. 2015 Nov;207(5):435-9. doi: 10.1192/bjp.bp.114.152363. Epub 2015 Sep 3.
PubMed 26338988Allan CL, Sexton CE, Filippini N, Topiwala A, Mahmood A, Zsoldos E, Singh-Manoux A, Shipley MJ, Kivimaki M, Mackay CE, Ebmeier KP. Sub-threshold depressive symptoms and brain structure: A magnetic resonance imaging study within the Whitehall II cohort. J Affect Disord. 2016 Nov 1;204:219-25. doi: 10.1016/j.jad.2016.06.049. Epub 2016 Jun 21.
PubMed 27372409Griffanti L, Jenkinson M, Suri S, Zsoldos E, Mahmood A, Filippini N, Sexton CE, Topiwala A, Allan C, Kivimaki M, Singh-Manoux A, Ebmeier KP, Mackay CE, Zamboni G. Classification and characterization of periventricular and deep white matter hyperintensities on MRI: A study in older adults. Neuroimage. 2018 Apr 15;170:174-181. doi: 10.1016/j.neuroimage.2017.03.024. Epub 2017 Mar 15.
PubMed 28315460Suri S, Emir U, Stagg CJ, Near J, Mekle R, Schubert F, Zsoldos E, Mahmood A, Singh-Manoux A, Kivimaki M, Ebmeier KP, Mackay CE, Filippini N. Effect of age and the APOE gene on metabolite concentrations in the posterior cingulate cortex. Neuroimage. 2017 May 15;152:509-516. doi: 10.1016/j.neuroimage.2017.03.031. Epub 2017 Mar 18.
PubMed 28323160Topiwala A, Allan CL, Valkanova V, Zsoldos E, Filippini N, Sexton C, Mahmood A, Fooks P, Singh-Manoux A, Mackay CE, Kivimaki M, Ebmeier KP. Moderate alcohol consumption as risk factor for adverse brain outcomes and cognitive decline: longitudinal cohort study. BMJ. 2017 Jun 6;357:j2353. doi: 10.1136/bmj.j2353.
PubMed 28588063Sexton CE, Zsoldos E, Filippini N, Griffanti L, Winkler A, Mahmood A, Allan CL, Topiwala A, Kyle SD, Spiegelhalder K, Singh-Manoux A, Kivimaki M, Mackay CE, Johansen-Berg H, Ebmeier KP. Associations between self-reported sleep quality and white matter in community-dwelling older adults: A prospective cohort study. Hum Brain Mapp. 2017 Nov;38(11):5465-5473. doi: 10.1002/hbm.23739. Epub 2017 Jul 26.
PubMed 28745016Suri S, Topiwala A, Filippini N, Zsoldos E, Mahmood A, Sexton CE, Singh-Manoux A, Kivimaki M, Mackay CE, Smith S, Ebmeier KP. Distinct resting-state functional connections associated with episodic and visuospatial memory in older adults. Neuroimage. 2017 Oct 1;159:122-130. doi: 10.1016/j.neuroimage.2017.07.049. Epub 2017 Jul 26.
PubMed 28756237Heise V, Zsoldos E, Suri S, Sexton C, Topiwala A, Filippini N, Mahmood A, Allan CL, Singh-Manoux A, Kivimaki M, Mackay CE, Ebmeier KP. Uncoupling protein 2 haplotype does not affect human brain structure and function in a sample of community-dwelling older adults. PLoS One. 2017 Aug 3;12(8):e0181392. doi: 10.1371/journal.pone.0181392. eCollection 2017.
PubMed 28771482Patel R, Mackay CE, Jansen MG, Devenyi GA, O'Donoghue MC, Kivimaki M, Singh-Manoux A, Zsoldos E, Ebmeier KP, Chakravarty MM, Suri S. Inter- and intra-individual variation in brain structural-cognition relationships in aging. Neuroimage. 2022 Aug 15;257:119254. doi: 10.1016/j.neuroimage.2022.119254. Epub 2022 Apr 28.
PubMed 35490915Jansen MG, Griffanti L, Mackay CE, Anaturk M, Melazzini L, Lange AG, Filippini N, Zsoldos E, Wiegertjes K, Leeuw FE, Singh-Manoux A, Kivimaki M, Ebmeier KP, Suri S. Association of cerebral small vessel disease burden with brain structure and cognitive and vascular risk trajectories in mid-to-late life. J Cereb Blood Flow Metab. 2022 Apr;42(4):600-612. doi: 10.1177/0271678X211048411. Epub 2021 Oct 5.
PubMed 34610763Suri S, Chiesa ST, Zsoldos E, Mackay CE, Filippini N, Griffanti L, Mahmood A, Singh-Manoux A, Shipley MJ, Brunner EJ, Kivimaki M, Deanfield JE, Ebmeier KP. Associations between arterial stiffening and brain structure, perfusion, and cognition in the Whitehall II Imaging Sub-study: A retrospective cohort study. PLoS Med. 2020 Dec 29;17(12):e1003467. doi: 10.1371/journal.pmed.1003467. eCollection 2020 Dec.
PubMed 33373359Zsoldos E, Mahmood A, Filippini N, Suri S, Heise V, Griffanti L, Mackay CE, Singh-Manoux A, Kivimaki M, Ebmeier KP. Association of midlife stroke risk with structural brain integrity and memory performance at older ages: a longitudinal cohort study. Brain Commun. 2020 Mar 7;2(1):fcaa026. doi: 10.1093/braincomms/fcaa026. eCollection 2020.
PubMed 32954286
Study at a glance
From the registry record, last updated by the sponsor on 5 Dec 2023. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Predicting MRI Abnormalities With Longitudinal Data of the Whitehall II Substudy
- ClinicalTrials.gov ID
- NCT03335696
- Acronym / sponsor ID
- MSD/IDREC/C1/2011/71
- Conditions
- Cognitive Impairment, Dementia, Affective Disorders
- Keywords
- Epidemiology, Magnetic resonance imaging, Diffusion tensor imaging, White matter, Functional MRI, Connectome, Resting state brain networks, Neuropsychology
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 800 participants (actual)
- Lead sponsor
- University of OxfordUniversity, hospital or other
- Collaborators
- University College, London
- Study start
- 1 Jan 2012 (actual)
- Primary completion
- 30 Jun 2017 (actual)
- Study completion
- 30 Jun 2017 (actual)
- First posted
- 8 Nov 2017 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Follow-up study within the Whitehall II study, selecting 800 participants for further neuropsychological, clinical and imaging (MRI) examinations to examine brain structure and function in relation to age-related diseases and the modifiable and non-modifiable factors affecting resilience against and vulnerability to adverse brain changes.
Detailed description
A total of 6035 civil servants participated in the WHII Phase 11 clinical examination in 2012-2013. A random sample of 800 of these participants was included in a sub-study comprising an MRI brain scan, a detailed clinical and cognitive assessment, and collection of blood and buccal mucosal samples for the characterisation of immune function and associated measures. Data collection for this sub-study started in 2012 and was completed by in 2016. The participants, for whom social and health records have been collected since 1985, were between 60-85 years of age at the time the MRI study started. The pre-specified clinical and cognitive assessment protocols, the state-of-the-art MRI sequences and latest pipelines for analyses of this sub-study have been published and are attached to this application.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
Who may qualify
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult, Older adult
- Study population
- Randomly selected from phase 11 of the an occupational cohort recruited from 1985 for the Whitehall II study (Marmot M, Brunner E. Cohort Profile: the Whitehall II study. Int J Epidemiol 2005;34(2):251-6).
Key inclusion criteria (1 listed)
- Member of Whitehall II cohort attending at UCL for phase 11
Key exclusion criteria (1 listed)
- Not suitable for MRI, travelling to Oxford, seriously physically ill
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Neuropsychological measure 1
Time frame: 2012-2016
National Adult Reading Test (premorbid intellectual ability)
Neuropsychological measure 2
Time frame: 2012-2016
Montreal Cognitive Assessment (MoCA)
Neuropsychological measure 3
Time frame: 2012-2016
Rey Complex Figure copy and delayed recall (visual episodic memory)
Neuropsychological measure 4
Time frame: 2012-2016
Hopkins Verbal Learning Test Revised (verbal episodic memory)
Neuropsychological measure 5
Time frame: 2012-2016
CANTAB Simple and Choice Reaction Time (processing speed)
Neuropsychological measure 6
Time frame: 2012-2016
WAIS-R Digit Symbol Test (processing speed)
Neuropsychological measure 7
Time frame: 2012-2016
Trail Making Test A and B (processing speed/executive functioning)
Neuropsychological measure 8
Time frame: 2012-2016
WAIS-R Digit Span forward and backwards (executive functioning)
Neuropsychological measure 9
Time frame: 2012-2016
Graded Naming Test (semantic memory)
MRI Measures 1
Time frame: 2012-2016
Siemens 3T - T1-weighted scan (MPRAGE) using FSL FIRST, FAST, and Freesurfer Volume extractions
MRI Measures 2
Time frame: 2012-2016
Siemens 3T - T1-weighted scan (MPRAGE) using FSL GLM Voxel based analysis for grey matter density analysis
MRI Measures 3
Time frame: 2012-2016
Siemens 3T - T2-weighted scan, clinical and FSL (BIANCA)-based rating of white matter changes
MRI Measures 4
Time frame: 2012-2016
Siemens 3T Diffusion Tensor Images analyzed with Tract Based Spatial Statistics (TBSS)
MRI Measures 5
Time frame: 2012-2016
Siemens 3T rs-fMRI analyzed with Multivariate Exploratory Linear Optimized Decomposition into Independent Components: MELODIC)
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 5 Dec 2023.
- Results publication: PubMed 24885374Filippini N, Zsoldos E, Haapakoski R, Sexton CE, Mahmood A, Allan CL, Topiwala A, Valkanova V, Brunner EJ, Shipley MJ, Auerbach E, Moeller S, Ugurbil K, Xu J, Yacoub E, Andersson J, Bijsterbosch J, Clare S, Griffanti L, Hess AT, Jenkinson M, Miller KL, Salimi-Khorshidi G, Sotiropoulos SN, Voets NL, Smith SM, Geddes JR, Singh-Manoux A, Mackay CE, Kivimaki M, Ebmeier KP. Study protocol: The Whitehall II imaging sub-study. BMC Psychiatry. 2014 May 30;14:159. doi: 10.1186/1471-244X-14-159.
- Results publication: PubMed 25497301Allan CL, Zsoldos E, Filippini N, Sexton CE, Topiwala A, Valkanova V, Singh-Manoux A, Tabak AG, Shipley MJ, Mackay C, Ebmeier KP, Kivimaki M. Lifetime hypertension as a predictor of brain structure in older adults: cohort study with a 28-year follow-up. Br J Psychiatry. 2015 Apr;206(4):308-15. doi: 10.1192/bjp.bp.114.153536. Epub 2014 Dec 11.
- Results publication: PubMed 26338988Topiwala A, Allan CL, Valkanova V, Zsoldos E, Filippini N, Sexton CE, Mahmood A, Singh-Manoux A, Mackay CE, Kivimaki M, Ebmeier KP. Resilience and MRI correlates of cognitive impairment in community-dwelling elders. Br J Psychiatry. 2015 Nov;207(5):435-9. doi: 10.1192/bjp.bp.114.152363. Epub 2015 Sep 3.
- Results publication: PubMed 27372409Allan CL, Sexton CE, Filippini N, Topiwala A, Mahmood A, Zsoldos E, Singh-Manoux A, Shipley MJ, Kivimaki M, Mackay CE, Ebmeier KP. Sub-threshold depressive symptoms and brain structure: A magnetic resonance imaging study within the Whitehall II cohort. J Affect Disord. 2016 Nov 1;204:219-25. doi: 10.1016/j.jad.2016.06.049. Epub 2016 Jun 21.
- Results publication: PubMed 28315460Griffanti L, Jenkinson M, Suri S, Zsoldos E, Mahmood A, Filippini N, Sexton CE, Topiwala A, Allan C, Kivimaki M, Singh-Manoux A, Ebmeier KP, Mackay CE, Zamboni G. Classification and characterization of periventricular and deep white matter hyperintensities on MRI: A study in older adults. Neuroimage. 2018 Apr 15;170:174-181. doi: 10.1016/j.neuroimage.2017.03.024. Epub 2017 Mar 15.
- Results publication: PubMed 28323160Suri S, Emir U, Stagg CJ, Near J, Mekle R, Schubert F, Zsoldos E, Mahmood A, Singh-Manoux A, Kivimaki M, Ebmeier KP, Mackay CE, Filippini N. Effect of age and the APOE gene on metabolite concentrations in the posterior cingulate cortex. Neuroimage. 2017 May 15;152:509-516. doi: 10.1016/j.neuroimage.2017.03.031. Epub 2017 Mar 18.
- Results publication: PubMed 28588063Topiwala A, Allan CL, Valkanova V, Zsoldos E, Filippini N, Sexton C, Mahmood A, Fooks P, Singh-Manoux A, Mackay CE, Kivimaki M, Ebmeier KP. Moderate alcohol consumption as risk factor for adverse brain outcomes and cognitive decline: longitudinal cohort study. BMJ. 2017 Jun 6;357:j2353. doi: 10.1136/bmj.j2353.
- Results publication: PubMed 28745016Sexton CE, Zsoldos E, Filippini N, Griffanti L, Winkler A, Mahmood A, Allan CL, Topiwala A, Kyle SD, Spiegelhalder K, Singh-Manoux A, Kivimaki M, Mackay CE, Johansen-Berg H, Ebmeier KP. Associations between self-reported sleep quality and white matter in community-dwelling older adults: A prospective cohort study. Hum Brain Mapp. 2017 Nov;38(11):5465-5473. doi: 10.1002/hbm.23739. Epub 2017 Jul 26.
- Results publication: PubMed 28756237Suri S, Topiwala A, Filippini N, Zsoldos E, Mahmood A, Sexton CE, Singh-Manoux A, Kivimaki M, Mackay CE, Smith S, Ebmeier KP. Distinct resting-state functional connections associated with episodic and visuospatial memory in older adults. Neuroimage. 2017 Oct 1;159:122-130. doi: 10.1016/j.neuroimage.2017.07.049. Epub 2017 Jul 26.
- Results publication: PubMed 28771482Heise V, Zsoldos E, Suri S, Sexton C, Topiwala A, Filippini N, Mahmood A, Allan CL, Singh-Manoux A, Kivimaki M, Mackay CE, Ebmeier KP. Uncoupling protein 2 haplotype does not affect human brain structure and function in a sample of community-dwelling older adults. PLoS One. 2017 Aug 3;12(8):e0181392. doi: 10.1371/journal.pone.0181392. eCollection 2017.
- Derived from this study: PubMed 35490915Patel R, Mackay CE, Jansen MG, Devenyi GA, O'Donoghue MC, Kivimaki M, Singh-Manoux A, Zsoldos E, Ebmeier KP, Chakravarty MM, Suri S. Inter- and intra-individual variation in brain structural-cognition relationships in aging. Neuroimage. 2022 Aug 15;257:119254. doi: 10.1016/j.neuroimage.2022.119254. Epub 2022 Apr 28.
- Derived from this study: PubMed 34610763Jansen MG, Griffanti L, Mackay CE, Anaturk M, Melazzini L, Lange AG, Filippini N, Zsoldos E, Wiegertjes K, Leeuw FE, Singh-Manoux A, Kivimaki M, Ebmeier KP, Suri S. Association of cerebral small vessel disease burden with brain structure and cognitive and vascular risk trajectories in mid-to-late life. J Cereb Blood Flow Metab. 2022 Apr;42(4):600-612. doi: 10.1177/0271678X211048411. Epub 2021 Oct 5.
- Whitehall Imaging OxfordLink provided by the sponsor.
- Individual participant dataSharing planned: Yes. The study follows MRC data sharing policies. Data will be accessible from the authors after 2019.
Related trials for Cognitive Impairment
Active, not recruiting
Primary Care Detection of Cognitive Impairment Leveraging Health & Consumer Technologies in Underserved Communities: The MyCog Trial
Dementia, Cognitive Impairment
Enrolling by invitationPhase 2
Tau PET Outcomes With Anti-amyloid Immunotherapies
Cognitive Impairment, Mild, Dementia, Mild
RecruitingPhase 1
PET Imaging of Phosphodiesterase-4 (PDE4) in Volunteers With Alzheimer Disease (AD) or Mild Cognitive Impairment (MCI)
Alzheimer s Disease, Mild Cognitive Impairment
Active, not recruitingPhase 4
A Study Testing How Well the Drug Extract of Ginkgo Biloba Leaves Tablets Works for People With Memory or Thinking Problems After a Stroke When Added to Standard Treatment
Ischemic Stroke Hospitalized, Impairment, Cognitive
Not yet recruiting
Robot-Assisted Meditation for Older Adults With Cognitive Concerns
Cognitive Impairment, Perceived Stress
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Klaus P Ebmeier, MD principal investigator
University of Oxford
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Cognitive Impairment and Dementia, run by University of Oxford at 1 site in United Kingdom.
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 1 inclusion and 1 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: finished, as of the sponsor's last update on 5 Dec 2023. 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 United Kingdom. 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.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Neuropsychological measure 1 (time frame: 2012-2016). The study lists 14 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 NCT03335696, which also lists 14 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 5 Dec 2023; AzTrials last refreshed its copy on 2 Nov 2026.