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Observational Study of Ischaemic Stroke (OSIS)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01859572
Recruitment Status : Completed
First Posted : May 22, 2013
Last Update Posted : December 19, 2016
Information provided by (Responsible Party):
ReNeuron Limited

Brief Summary:
The rationale for this study is to facilitate future Phase II/III clinical trials and improve outcome for patients suffering residual disability after an ischaemic stroke. Main study objectives are to document and better define the prognostic characteristics of residual disability in patients following an ischaemic stroke, to inform the design of small efficient Phase II studies when screening potentially efficacious interventions for signals of activity which merit further development and to establish a pool of patients who may be approached to participate in future clinical trials in the ischaemic stroke setting.

Condition or disease
Stroke Motor Activity

Detailed Description:

Experience of conducting a Phase I study of an advanced medicinal therapy for ischaemic stroke and planning a Phase II efficacy study for this indication has revealed a number of opportunities to facilitate future clinical trials for this important indication.

Two key issues were identified which could be easily addressed with forward planning of future trials in the ischaemic clinical setting:

  • The population readily available for clinical trials of potentially useful new agents is limited, as many patients presenting with a stroke are treated in an acute unit but then may "drop-out" of the acute neurology or academic catchment populations when they are transferred to a variety of settings for subsequent management, such as long-term hospital care in a geriatric ward, residential care or home care by relatives with assistance from social support. Thus, establishing a pool of patients willing to be contacted about future clinical trials after they leave the acute stroke facility would facilitate future stroke studies. It would ensure such patients were offered the opportunity to participate in relevant clinical trials and any additional related care (e.g. additional physiotherapy).
  • Despite a substantial amount of literature on the management of stroke, planning of Phase II studies is still handicapped by insufficient information to clearly identify which patients will be left with residual disability and the time-course of any improvement with current standards of care. Optimal populations and clinical trial methodology for screening potential new interventions for stroke have not been established. Building a robust dataset to better identify such populations would: 1) improve the speed and reduce the cost of screening candidates, 2) permit use of more efficient statistical methods to screen for activity, and 3) increase the opportunity to identify new treatments for post stroke disability.

A core dataset will be recorded including the patient's National Health Service number, age, gender and stroke outcome measured by four standard validated rating scales; Action Research Arm Test (ARAT), National Institute of Health Stroke Scale (NIHSS), modified Rankin Scale (mRS) and Barthel Index (BI). All patients consenting to participate in the program would also consent to being contacted to determine their interest in participating in future regulated clinical trials of interventions for patients with a history of ischaemic stroke. The consent form for this study would make it clear that the patient is under no obligation to participate in any other study.

In addition to the core dataset, participating centres may elect to add additional sub-protocols to this study to collect additional non-core data: for example, assessment of cognitive or visual function, mood, fatigue or other measures of performance, structural or functional MRI imaging or other investigations related to the patient's progress following the presenting stroke. Additional assessment criteria outside the core dataset of this study would be the subject of centre-specific sub-protocols and must be approved as required by national and local requirements.

Co-recruitment of patients into other studies is allowable, if permitted within the other study protocol.

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Study Type : Observational
Actual Enrollment : 110 participants
Observational Model: Case-Only
Time Perspective: Prospective
Official Title: A Non-interventional Observational Study to Document the Clinical Course of Patients Following Ischaemic Stroke and to Establish a Pool of Patients for Future Trials in the Ischaemic Stroke Setting
Study Start Date : February 2014
Actual Primary Completion Date : March 2016
Actual Study Completion Date : May 2016

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Ischemic Stroke

Primary Outcome Measures :
  1. Action Research Arm Test (ARAT) [ Time Frame: 6 months ]
  2. National Institute of Health Stroke Scale (NIHSS) [ Time Frame: 6 months ]
  3. modified Rankin Scale (mRS) [ Time Frame: 6 months ]
  4. Barthel Index (BI) [ Time Frame: 6 months ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
The group consists of consenting patients who survive the first 7 days following their first ischaemic stroke in participating stroke units

Inclusion Criteria:

  • Capacity to give informed consent or witnessed informed consent in the event that the patient is unable to sign informed consent due to physical impairments
  • Clinical diagnosis of cortical and/or subcortical ischaemic stroke in an area perfused by the middle cerebral artery (i.e. stroke due to ischaemia resulting in infarct located in the basal ganglia, internal capsule or corona radiata)
  • Survived first 7 days following ischaemic stroke.
  • A motor handicap 7 days after the onset of the ischaemic stroke, which includes as a minimum, the inability to extend an arm to a horizontal position with the palm upward against gravity and to maintain the arm extended horizontally against gravity without obvious downward drift for 30 seconds.

Exclusion Criteria:

  • Prior history of stroke resulting in permanent, moderate to severe disability (i.e. Rankin Scale greater than 2) (other than the presenting ischaemic stroke)
  • Stroke due to haemorrhage
  • History of neurological or other disease resulting in significant functional impairment of the paretic arm impairing potential ability to pick up, lift and place a 2.5 cm3 block (e.g. Parkinson's disease, motor neuron disease, arthritis, Dupuytren's contracture or fixed anatomical abnormality)
  • Patient with a severe comorbid disorder, not expected to survive more than 12 months
  • Considered unlikely to be able to attend for all follow-up visits

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01859572

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United Kingdom
Glasgow Southern General Hospital
Glasgow, United Kingdom, G51 4TF
Sponsors and Collaborators
ReNeuron Limited
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Responsible Party: ReNeuron Limited Identifier: NCT01859572    
Other Study ID Numbers: RN-CS-0001
First Posted: May 22, 2013    Key Record Dates
Last Update Posted: December 19, 2016
Last Verified: December 2016
Keywords provided by ReNeuron Limited:
Cerebral Infarction
Brain Disorders
Central Nervous System Diseases
Nervous System Diseases
Vascular Diseases
Cardiovascular Diseases
Brain Infarction
Brain Ischaemia
Additional relevant MeSH terms:
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Ischemic Stroke
Cerebrovascular Disorders
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Vascular Diseases
Cardiovascular Diseases