StrokeCROMIS-2NCT02513316
Clinical Relevance of Microbleeds In Stroke
An observational study of Stroke and Atrial Fibrillation (AF), run by University College, London at 1 site in United Kingdom.
Trial summary
Study I: CROMIS-2 (AF) Prospective cohort study of patients anticoagulated after cardioembolic stroke An observational inception cohort study (n=1425) of patients throughout the United Kingdom (UK) - (79 hospitals) started on best practice oral anticoagulant (without prior use) for presumed cardioembolic ischaemic… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Stroke, Atrial Fibrillation (AF), Intracerebral Haemorrhage (ICH)
- Type of treatment
- Pill or oral medicine
- How many people
- 2,490 participants
- Where
- 1 siteUnited Kingdom
- Study dates
- 4 Aug 2011to 31 Oct 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 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Study I: CROMIS-2 (AF) Prospective cohort study of patients anticoagulated after cardioembolic stroke Study I (AF): 1425 patients from UK centres. All eligible patients with first or recurrent ischaemic stroke and TIA in whom it is decided that best practice oral anticoagulant treatment is to be commenced. Study II (ICH): The investigators will recruit 600 patients treated at participating hospitals with ICH. Of these patients, 300 ICH cases will be related to anticoagulant use. The investigators will also recruit at least 300 ICH cases not related to anticoagulant use during the study period. Patients seen in outpatient clinics or from existing databases may also be recruited, at centres where these are available.
Who may be able to join
- Adult (≥18y; no upper limit) patients with a clinical diagnosis of non-valvular AF (verified by ECG) with intention to treat with best practice oral anticoagulants (e.g. warfarin)
- Previous ischaemic stroke or TIA diagnosed by treating clinician
- All patients must be able to have GRE MRI before (or within 1 week) of starting best practice oral anticoagulant
- Adult (>18y) patients treated at participating centres with confirmed ICH (confirmed on CT or MRI scans) with or without a history of anticoagulant use at the time of the ICH
Who cannot join
- Any MRI contraindications
- Previous use of oral anticoagulation
- Definite contra-indication to oral anticoagulation
- Serious head injury (resulting to loss of consciousness)
- Study II: CROMIS-2 (ICH)
- Known underlying structural cause for ICH (e.g arteriovenous malformation, tumour, cavernoma, intracranial aneurysm, haemorrhagic transformation of an infarct)
- Major head trauma (causing loss of consciousness and though to be sufficient to have caused the ICH) in previous 24 hours
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Microbleeds and Genetic Risk Factors to Predict the Risk of Intracranial Haemorrhage in Patients Treated With Anticoagulation Following Cardioembolic Stroke Due to Atrial Fibrillation
Study I: CROMIS-2 (AF) Prospective cohort study of patients anticoagulated after cardioembolic stroke An observational inception cohort study (n=1425) of patients throughout the United Kingdom (UK) - (79 hospitals) started on best practice oral anticoagulant (without prior use) for presumed cardioembolic ischaemic stroke due to non-valvular AF with follow up for the occurrence of intracerebral haemorrhage (ICH) and ischaemic stroke for an average of two years. The main baseline exposures (risk factors of interest) are the presence of cerebral microbleeds (CMBs) on magnetic resonance imaging (MRI), and genetic polymorphisms in candidate genes with potential functional relevance to ICH risk.
Study II: CROMIS-2 (ICH) Observational and genetics study of intracerebral haemorrhage The investigators will also recruit 600 patients admitted to participating centres with ICH (with a target of at least 300 anticoagulant-related ICH cases) and collect DNA to increase the power of the genetic studies. The investigators will collect clinical and imaging data from these ICH cases to investigate risk factors associated with anticoagulant-related ICH compared to non anticoagulant-related ICH.
Read the detailed description
Background Over the last decade, increasing use of oral anticoagulants to prevent cardioembolic ischaemic stroke due to atrial fibrillation (AF) in an ageing population has led to a five-fold increase in the incidence of anticoagulant-related intracranial haemorrhage (ICH) - a rare but unpredictable and catastrophic complication. Cerebral microbleeds (CMBs) on magnetic resonance imaging (MRI) may predict ICH risk, as may genetic polymorphisms influencing brain small-vessel integrity or anticoagulation stability.
Aims To establish the value of CMBs and genetic factors in predicting symptomatic ICH following best practice oral anticoagulation to prevent recurrent ischaemic stroke due to AF.
Methods CROMIS-2: Study I (AF) - Prospective, multicentre, inception cohort study in 1425 patients with ischaemic stroke due to AF started on best practice oral anticoagulation. Patients will have genetic testing and standardized MRI including Gradient recalled Echo (GRE) at baseline, with follow-up by postal questionnaire (and clinical assessment or medical records surveillance after suspected events), and where possible there will be an in person clinical assessment at 2 years. The investigators will compare the rate of symptomatic ICH between CMB and CMB-free patients and test for associations with plausible candidate genes. The investigators aim to develop and validate a risk model to predict symptomatic ICH following best practice oral anticoagulation to prevent recurrent ischaemic stroke due to AF.
CROMIS-2: Study II (ICH) - An observational study of ICH investigating genetic, clinical and radiological risk factors associated with anticoagulant-related ICH. The investigators will recruit patients admitted to participating centres with ICH (with a target of at least 300 anticoagulant-related ICH cases) and collect DNA to increase the power of the genetic studies. The investigators will collect clinical and imaging data from these ICH cases to investigate risk factors associated with anticoagulant-related ICH compared to non anticoagulant-related ICH.
Expected outcomes A successful predictive model for ICH risk after best practice oral anticoagulation for AF will help to determine whether genetic or CMB screening should be used in clinical practice and future trials. New genetic, clinical and radiological risk factors associated with anticoagulant-related ICH will be identified.
- Keywords
- Microbleeds
- Medical subject headings
- Stroke, Atrial Fibrillation, Cerebral Hemorrhage
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| Study I (AF) | Prospective cohort study of patients anticoagulated after cardioembolic stroke started on best practice oral anticoagulant (without prior use) for presumed cardioembolic ischaemic stroke due to non-valvular AF with follow up for the occurrence of ICH, ischaemic stroke and cognitive function for an average of two years. Our main baseline exposures (risk factors of interest) are the presence of CMBs on MRI, and genetic polymorphisms in candidate genes with potential functional relevance to ICH risk. | |
| Study II (ICH) | Observational and genetics study of intracerebral haemorrhage Patients with ICH (non anticoagulant-related ICH cases and anticoagulant-related ICH cases). |
What is being measured
The primary outcome is the main question the study is designed to answer.
Symptomatic intracranial haemorrhage
Symptomatic intracranial haemorrhage (confirmed on brain imaging). Intracranial haemorrhage includes any bleeding within the skull, regardless of the site. The investigators will record the incidence of different haemorrhage subtypes (intracerebral, subdural, extradural, subarachnoid).
This will be assessed using hospital records, General Practitioner (GP) follow up and National Health Service (NHS) information data system.
Measured: 24 months
Secondary outcomes (5)
Ischaemic stroke
Patient experiencing an ischaemic stroke during 2 year follow up.This will be assessed using hospital records, General Practitioner (GP) follow up and National Health Service (NHS) information data system.
Measured: 24 months
Transient Ischaemic Attack (TIA)
Patient experiencing a TIA after recruitment during 2 year follow up.This will be assessed using hospital records, General Practitioner (GP) follow up and National Health Service (NHS) information data system.
Measured: 24 months
Death
Patient death (of any cause). Assessed by General Practitioner (GP) follow up, recruiting hospital records and National Health Service (NHS) Information Centre data systems.
Measured: 24 months
Any other major haemorrhagic events other than ICH
Prolonged epistaxis, cutaneous bruising, gastrointestinal bleeding, haematuria, muscle haematoma, haemarthrosis. Assessed by General Practitioner (GP) follow up, recruiting hospital records and National Health Service (NHS) Information Centre data systems.
Measured: 24 months
Long term physical disability
Assessed by administering Modified Rankin Score (mRS) to patients at 6,12 and 24 months via patient questionnaire.
Measured: 24 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted31 Jul 2015 (estimated)
- Study start4 Aug 2011
- Primary completion31 Jul 2017
- Study completion31 Oct 2017
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (10)Papers the sponsor has linked to this study.
- Other trials for StrokeStudies of the same condition, open and under way.
- More trials run by University College, LondonThe 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
- 2,490 participants (actual)
Sponsor and investigators
- Lead sponsor
- University College, London
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- David Werring, Principal investigator, UCL
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02513316
- Sponsor's protocol ID
- 11/0116
- Acronym
- CROMIS-2
- Status last verified
- Oct 2017
- First submitted
- 29 Jul 2015
- Last updated
- 17 Nov 2017
- Results posted
- No
- Data monitoring committee
- No
Publications
Seiffge DJ, Wilson D, Ambler G, Banerjee G, Hostettler IC, Houlden H, Shakeshaft C, Cohen H, Yousry TA, Al-Shahi Salman R, Lip G, Brown MM, Muir K, Jager HR, Werring DJ. Small vessel disease burden and intracerebral haemorrhage in patients taking oral anticoagulants. J Neurol Neurosurg Psychiatry. 2021 Mar 19;92(8):805-14. doi: 10.1136/jnnp-2020-325299. Online ahead of print.
PubMed 33741739Hostettler IC, Schwarz G, Ambler G, Wilson D, Banerjee G, Seiffge DJ, Shakeshaft C, Lunawat S, Cohen H, Yousry TA, Al-Shahi Salman R, Lip GYH, Brown MM, Muir KW, Houlden H, Jager HR, Werring DJ; CROMIS-2 Collaborators. Cerebral Small Vessel Disease and Functional Outcome Prediction After Intracerebral Hemorrhage. Neurology. 2021 Apr 13;96(15):e1954-e1965. doi: 10.1212/WNL.0000000000011746. Epub 2021 Feb 24.
PubMed 33627495Du H, Wilson D, Ambler G, Banerjee G, Shakeshaft C, Cohen H, Yousry T, Al-Shahi Salman R, Lip GYH, Houlden H, Brown MM, Muir KW, Jager HR, Werring DJ; Clinical Relevance of Microbleeds in Stroke (CROMIS-2) Collaborators. Small Vessel Disease and Ischemic Stroke Risk During Anticoagulation for Atrial Fibrillation After Cerebral Ischemia. Stroke. 2021 Jan;52(1):91-99. doi: 10.1161/STROKEAHA.120.029474. Epub 2020 Dec 7.
PubMed 33280548Banerjee G, Wilson D, Ambler G, Hostettler IC, Shakeshaft C, Cohen H, Yousry T, Al-Shahi Salman R, Lip GYH, Houlden H, Muir KW, Brown MM, Jager HR, Werring DJ; CROMIS-2 collaborators. Longer term stroke risk in intracerebral haemorrhage survivors. J Neurol Neurosurg Psychiatry. 2020 Aug;91(8):840-845. doi: 10.1136/jnnp-2020-323079. Epub 2020 Jun 17.
PubMed 32554800Banerjee G, Chan E, Ambler G, Wilson D, Cipolotti L, Shakeshaft C, Cohen H, Yousry T, Al-Shahi Salman R, Lip GYH, Muir KW, Brown MM, Jager HR, Werring DJ; CROMIS-2 Collaborators dagger; CROMIS-2 Collaborators<xref ref-type="author-note" rid="jah34726-note-1002"><sup>dagger</sup></xref>. Cognitive Impairment Before Atrial Fibrillation-Related Ischemic Events: Neuroimaging and Prognostic Associations. J Am Heart Assoc. 2020 Jan 7;9(1):e014537. doi: 10.1161/JAHA.119.014537. Epub 2020 Jan 4.
PubMed 31902325Wilson D, Ambler G, Shakeshaft C, Banerjee G, Charidimou A, Seiffge D, White M, Cohen H, Yousry T, Salman R AS, Lip GYH, Muir K, Brown MM, Jager HR, Werring DJ; CROMIS-2 collaborators. Potential missed opportunities to prevent ischaemic stroke: prospective multicentre cohort study of atrial fibrillation-associated ischaemic stroke and TIA. BMJ Open. 2019 Jul 24;9(7):e028387. doi: 10.1136/bmjopen-2018-028387.
PubMed 31345970Wilson D, Ambler G, Banerjee G, Shakeshaft C, Cohen H, Yousry TA, Al-Shahi Salman R, Lip GYH, Houlden H, Brown MM, Muir KW, Jager HR, Werring DJ; Clinical relevance of Microbleeds in Stroke (CROMIS-2) collaborators. Early versus late anticoagulation for ischaemic stroke associated with atrial fibrillation: multicentre cohort study. J Neurol Neurosurg Psychiatry. 2019 Mar;90(3):320-325. doi: 10.1136/jnnp-2018-318890. Epub 2018 Nov 19.
PubMed 30455404Wilson D, Ambler G, Shakeshaft C, Brown MM, Charidimou A, Al-Shahi Salman R, Lip GYH, Cohen H, Banerjee G, Houlden H, White MJ, Yousry TA, Harkness K, Flossmann E, Smyth N, Shaw LJ, Warburton E, Muir KW, Jager HR, Werring DJ; CROMIS-2 collaborators. Cerebral microbleeds and intracranial haemorrhage risk in patients anticoagulated for atrial fibrillation after acute ischaemic stroke or transient ischaemic attack (CROMIS-2): a multicentre observational cohort study. Lancet Neurol. 2018 Jun;17(6):539-547. doi: 10.1016/S1474-4422(18)30145-5. Epub 2018 May 16.
PubMed 29778365Banerjee G, Wilson D, Ambler G, Osei-Bonsu Appiah K, Shakeshaft C, Lunawat S, Cohen H, Yousry T Dr, Lip GYH, Muir KW, Brown MM, Al-Shahi Salman R, Jager HR, Werring DJ; CROMIS-2 Collaborators. Cognitive Impairment Before Intracerebral Hemorrhage Is Associated With Cerebral Amyloid Angiopathy. Stroke. 2018 Jan;49(1):40-45. doi: 10.1161/STROKEAHA.117.019409. Epub 2017 Dec 15.
PubMed 29247143Charidimou A, Wilson D, Shakeshaft C, Ambler G, White M, Cohen H, Yousry T, Al-Shahi Salman R, Lip G, Houlden H, Jager HR, Brown MM, Werring DJ. The Clinical Relevance of Microbleeds in Stroke study (CROMIS-2): rationale, design, and methods. Int J Stroke. 2015 Oct;10 Suppl A100:155-61. doi: 10.1111/ijs.12569. Epub 2015 Aug 2.
PubMed 26235450
Study at a glance
From the registry record, last updated by the sponsor on 17 Nov 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Microbleeds and Genetic Risk Factors to Predict the Risk of Intracranial Haemorrhage in Patients Treated With Anticoagulation Following Cardioembolic Stroke Due to Atrial Fibrillation
- ClinicalTrials.gov ID
- NCT02513316
- Acronym / sponsor ID
- CROMIS-2 / 11/0116
- Keywords
- Microbleeds
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 2,490 participants (actual)
- Lead sponsor
- University College, LondonUniversity, hospital or other
- Study start
- 4 Aug 2011 (actual)
- Primary completion
- 31 Jul 2017 (actual)
- Study completion
- 31 Oct 2017 (actual)
- First posted
- 31 Jul 2015 (estimated)
- 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.
Study I: CROMIS-2 (AF) Prospective cohort study of patients anticoagulated after cardioembolic stroke An observational inception cohort study (n=1425) of patients throughout the United Kingdom (UK) - (79 hospitals) started on best practice oral anticoagulant (without prior use) for presumed cardioembolic ischaemic stroke due to non-valvular AF with follow up for the occurrence of intracerebral haemorrhage (ICH) and ischaemic stroke for an average of two years. The main baseline exposures (risk factors of interest) are the presence of cerebral microbleeds (CMBs) on magnetic resonance imaging (MRI), and genetic polymorphisms in candidate genes with potential functional relevance to ICH risk.
Study II: CROMIS-2 (ICH) Observational and genetics study of intracerebral haemorrhage The investigators will also recruit 600 patients admitted to participating centres with ICH (with a target of at least 300 anticoagulant-related ICH cases) and collect DNA to increase the power of the genetic studies. The investigators will collect clinical and imaging data from these ICH cases to investigate risk factors associated with anticoagulant-related ICH compared to non anticoagulant-related ICH.
Detailed description
Background Over the last decade, increasing use of oral anticoagulants to prevent cardioembolic ischaemic stroke due to atrial fibrillation (AF) in an ageing population has led to a five-fold increase in the incidence of anticoagulant-related intracranial haemorrhage (ICH) - a rare but unpredictable and catastrophic complication. Cerebral microbleeds (CMBs) on magnetic resonance imaging (MRI) may predict ICH risk, as may genetic polymorphisms influencing brain small-vessel integrity or anticoagulation stability.
Aims To establish the value of CMBs and genetic factors in predicting symptomatic ICH following best practice oral anticoagulation to prevent recurrent ischaemic stroke due to AF.
Methods CROMIS-2: Study I (AF) - Prospective, multicentre, inception cohort study in 1425 patients with ischaemic stroke due to AF started on best practice oral anticoagulation. Patients will have genetic testing and standardized MRI including Gradient recalled Echo (GRE) at baseline, with follow-up by postal questionnaire (and clinical assessment or medical records surveillance after suspected events), and where possible there will be an in person clinical assessment at 2 years. The investigators will compare the rate of symptomatic ICH between CMB and CMB-free patients and test for associations with plausible candidate genes. The investigators aim to develop and validate a risk model to predict symptomatic ICH following best practice oral anticoagulation to prevent recurrent ischaemic stroke due to AF.
CROMIS-2: Study II (ICH) - An observational study of ICH investigating genetic, clinical and radiological risk factors associated with anticoagulant-related ICH. The investigators will recruit patients admitted to participating centres with ICH (with a target of at least 300 anticoagulant-related ICH cases) and collect DNA to increase the power of the genetic studies. The investigators will collect clinical and imaging data from these ICH cases to investigate risk factors associated with anticoagulant-related ICH compared to non anticoagulant-related ICH.
Expected outcomes A successful predictive model for ICH risk after best practice oral anticoagulation for AF will help to determine whether genetic or CMB screening should be used in clinical practice and future trials. New genetic, clinical and radiological risk factors associated with anticoagulant-related ICH will be identified.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Study I (AF) | – | –Prospective cohort study of patients anticoagulated after cardioembolic stroke started on best practice oral anticoagulant (without prior use) for presumed cardioembolic ischaemic stroke due to non-valvular AF with follow up for the occurrence of ICH, ischaemic stroke and cognitive function for an average of two years. Our main baseline exposures (risk factors of interest) are the presence of CMBs on MRI, and genetic polymorphisms in candidate genes with potential functional relevance to ICH risk. |
| Study II (ICH) | – | –Observational and genetics study of intracerebral haemorrhage Patients with ICH (non anticoagulant-related ICH cases and anticoagulant-related ICH cases). |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Study I: CROMIS-2 (AF) Prospective cohort study of patients anticoagulated after cardioembolic stroke Study I (AF): 1425 patients from UK centres. All eligible patients with first or recurrent ischaemic stroke and TIA in whom it is decided that best practice oral anticoagulant treatment is to be commenced. Study II (ICH): The investigators will recruit 600 patients treated at participating hospitals with ICH. Of these patients, 300 ICH cases will be related to anticoagulant use. The investigators will also recruit at least 300 ICH cases not related to anticoagulant use during the study period. Patients seen in outpatient clinics or from existing databases may also be recruited, at centres where these are available.
Key inclusion criteria (4 listed)
- Adult (≥18y; no upper limit) patients with a clinical diagnosis of non-valvular AF (verified by ECG) with intention to treat with best practice oral anticoagulants (e.g. warfarin)
- Previous ischaemic stroke or TIA diagnosed by treating clinician
- All patients must be able to have GRE MRI before (or within 1 week) of starting best practice oral anticoagulant
- Adult (>18y) patients treated at participating centres with confirmed ICH (confirmed on CT or MRI scans) with or without a history of anticoagulant use at the time of the ICH
Key exclusion criteria (7 listed)
- Any MRI contraindications
- Previous use of oral anticoagulation
- Definite contra-indication to oral anticoagulation
- Serious head injury (resulting to loss of consciousness)
- Study II: CROMIS-2 (ICH)
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
Symptomatic intracranial haemorrhage
Time frame: 24 months
Symptomatic intracranial haemorrhage (confirmed on brain imaging). Intracranial haemorrhage includes any bleeding within the skull, regardless of the site. The investigators will record the incidence of different haemorrhage subtypes (intracerebral, subdural, extradural, subarachnoid). This will be assessed using hospital records, General Practitioner (GP) follow up and National Health Service (NHS) information data system.
5 secondary outcomes
Ischaemic stroke
Time frame: 24 months
Transient Ischaemic Attack (TIA)
Time frame: 24 months
Death
Time frame: 24 months
Any other major haemorrhagic events other than ICH
Time frame: 24 months
Long term physical disability
Time frame: 24 months
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 17 Nov 2017.
- Derived from this study: PubMed 33741739Seiffge DJ, Wilson D, Ambler G, Banerjee G, Hostettler IC, Houlden H, Shakeshaft C, Cohen H, Yousry TA, Al-Shahi Salman R, Lip G, Brown MM, Muir K, Jager HR, Werring DJ. Small vessel disease burden and intracerebral haemorrhage in patients taking oral anticoagulants. J Neurol Neurosurg Psychiatry. 2021 Mar 19;92(8):805-14. doi: 10.1136/jnnp-2020-325299. Online ahead of print.
- Derived from this study: PubMed 33627495Hostettler IC, Schwarz G, Ambler G, Wilson D, Banerjee G, Seiffge DJ, Shakeshaft C, Lunawat S, Cohen H, Yousry TA, Al-Shahi Salman R, Lip GYH, Brown MM, Muir KW, Houlden H, Jager HR, Werring DJ; CROMIS-2 Collaborators. Cerebral Small Vessel Disease and Functional Outcome Prediction After Intracerebral Hemorrhage. Neurology. 2021 Apr 13;96(15):e1954-e1965. doi: 10.1212/WNL.0000000000011746. Epub 2021 Feb 24.
- Derived from this study: PubMed 33280548Du H, Wilson D, Ambler G, Banerjee G, Shakeshaft C, Cohen H, Yousry T, Al-Shahi Salman R, Lip GYH, Houlden H, Brown MM, Muir KW, Jager HR, Werring DJ; Clinical Relevance of Microbleeds in Stroke (CROMIS-2) Collaborators. Small Vessel Disease and Ischemic Stroke Risk During Anticoagulation for Atrial Fibrillation After Cerebral Ischemia. Stroke. 2021 Jan;52(1):91-99. doi: 10.1161/STROKEAHA.120.029474. Epub 2020 Dec 7.
- Derived from this study: PubMed 32554800Banerjee G, Wilson D, Ambler G, Hostettler IC, Shakeshaft C, Cohen H, Yousry T, Al-Shahi Salman R, Lip GYH, Houlden H, Muir KW, Brown MM, Jager HR, Werring DJ; CROMIS-2 collaborators. Longer term stroke risk in intracerebral haemorrhage survivors. J Neurol Neurosurg Psychiatry. 2020 Aug;91(8):840-845. doi: 10.1136/jnnp-2020-323079. Epub 2020 Jun 17.
- Derived from this study: PubMed 31902325Banerjee G, Chan E, Ambler G, Wilson D, Cipolotti L, Shakeshaft C, Cohen H, Yousry T, Al-Shahi Salman R, Lip GYH, Muir KW, Brown MM, Jager HR, Werring DJ; CROMIS-2 Collaborators dagger; CROMIS-2 Collaborators<xref ref-type="author-note" rid="jah34726-note-1002"><sup>dagger</sup></xref>. Cognitive Impairment Before Atrial Fibrillation-Related Ischemic Events: Neuroimaging and Prognostic Associations. J Am Heart Assoc. 2020 Jan 7;9(1):e014537. doi: 10.1161/JAHA.119.014537. Epub 2020 Jan 4.
- Derived from this study: PubMed 31345970Wilson D, Ambler G, Shakeshaft C, Banerjee G, Charidimou A, Seiffge D, White M, Cohen H, Yousry T, Salman R AS, Lip GYH, Muir K, Brown MM, Jager HR, Werring DJ; CROMIS-2 collaborators. Potential missed opportunities to prevent ischaemic stroke: prospective multicentre cohort study of atrial fibrillation-associated ischaemic stroke and TIA. BMJ Open. 2019 Jul 24;9(7):e028387. doi: 10.1136/bmjopen-2018-028387.
- Derived from this study: PubMed 30455404Wilson D, Ambler G, Banerjee G, Shakeshaft C, Cohen H, Yousry TA, Al-Shahi Salman R, Lip GYH, Houlden H, Brown MM, Muir KW, Jager HR, Werring DJ; Clinical relevance of Microbleeds in Stroke (CROMIS-2) collaborators. Early versus late anticoagulation for ischaemic stroke associated with atrial fibrillation: multicentre cohort study. J Neurol Neurosurg Psychiatry. 2019 Mar;90(3):320-325. doi: 10.1136/jnnp-2018-318890. Epub 2018 Nov 19.
- Derived from this study: PubMed 29778365Wilson D, Ambler G, Shakeshaft C, Brown MM, Charidimou A, Al-Shahi Salman R, Lip GYH, Cohen H, Banerjee G, Houlden H, White MJ, Yousry TA, Harkness K, Flossmann E, Smyth N, Shaw LJ, Warburton E, Muir KW, Jager HR, Werring DJ; CROMIS-2 collaborators. Cerebral microbleeds and intracranial haemorrhage risk in patients anticoagulated for atrial fibrillation after acute ischaemic stroke or transient ischaemic attack (CROMIS-2): a multicentre observational cohort study. Lancet Neurol. 2018 Jun;17(6):539-547. doi: 10.1016/S1474-4422(18)30145-5. Epub 2018 May 16.
- Derived from this study: PubMed 29247143Banerjee G, Wilson D, Ambler G, Osei-Bonsu Appiah K, Shakeshaft C, Lunawat S, Cohen H, Yousry T Dr, Lip GYH, Muir KW, Brown MM, Al-Shahi Salman R, Jager HR, Werring DJ; CROMIS-2 Collaborators. Cognitive Impairment Before Intracerebral Hemorrhage Is Associated With Cerebral Amyloid Angiopathy. Stroke. 2018 Jan;49(1):40-45. doi: 10.1161/STROKEAHA.117.019409. Epub 2017 Dec 15.
- Derived from this study: PubMed 26235450Charidimou A, Wilson D, Shakeshaft C, Ambler G, White M, Cohen H, Yousry T, Al-Shahi Salman R, Lip G, Houlden H, Jager HR, Brown MM, Werring DJ. The Clinical Relevance of Microbleeds in Stroke study (CROMIS-2): rationale, design, and methods. Int J Stroke. 2015 Oct;10 Suppl A100:155-61. doi: 10.1111/ijs.12569. Epub 2015 Aug 2.
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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.
David Werring principal investigator
UCL
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 Stroke and Atrial Fibrillation (AF), run by University College, London 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 4 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: finished, as of the sponsor's last update on 17 Nov 2017. 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?
Symptomatic intracranial haemorrhage (time frame: 24 months). 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 NCT02513316, 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 17 Nov 2017.