NOR-SYS: The Norwegian Stroke in the Young Study (NOR-SYS)

This study is currently recruiting participants. (see Contacts and Locations)
Verified September 2015 by Haukeland University Hospital
Information provided by (Responsible Party):
Haukeland University Hospital Identifier:
First received: May 2, 2012
Last updated: September 9, 2015
Last verified: September 2015

NOR-SYS is a clinical research program about young ischemic stroke patients from 15 to 60 years. Patients, partners and the couple´s adult children who are at least 18 years old, are all invited to ultrasound examinations due to a standardized protocol.

Parents of patients and partners are invited to return their answers of standardized questionnaires about clinical ischemic events such as stroke, angina or myocardial infarction or peripheral artery disease.

Study inclusion time of patients and their families is 5 years. A biobank is build from samples from patients, partners and adult children. Clinical follow-ups for patients and partners are planned after 5, 10 and 15 years. Clinical follow-ups for adult children are planned after 10 and 20 years.


What do patients know about their parents clinical ischemic events? How much established pathology in arteries do we find by a standardized ultrasound protocol at the time of ischemic stroke at a young age? Differences concerning risk factors and ultrasound findings between patients and partners? Differences between children from families with several ischemic events among parents and grandparents vs. children from families without ischemic events? Biochemical markers related to ultrasound findings and artery disease.

Condition Intervention Phase
Carotid Artery Disease
Cardiovascular Disease
Peripheral Artery Disease
Behavioral: Lifestyle counseling
Phase 4

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Official Title: NOR-SYS: The Norwegian Stroke in the Young Study Young Ischemic Stroke and Family Risk Factors

Resource links provided by NLM:

Further study details as provided by Haukeland University Hospital:

Primary Outcome Measures:
  • All cause mortality [ Time Frame: 20 years ] [ Designated as safety issue: No ]
    Outcome measure is assessed every five years.

Secondary Outcome Measures:
  • Arterial events (recurrent stroke or transitoric ischemic attack, myocardial infarction or angina, peripheral artery disease [ Time Frame: 20 years ] [ Designated as safety issue: No ]
    Outcome measure is assessed every five years.

Estimated Enrollment: 600
Study Start Date: September 2010
Estimated Study Completion Date: December 2035
Estimated Primary Completion Date: December 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Lifestyle counseling Behavioral: Lifestyle counseling
Ultrasound examinations of carotid arteries, aorta abdominalis, femoral arteries and lifestyle counseling
Other Name: NOR-SYS

Detailed Description:

Equal examinations for patients, partners and adult children are:

  • Standardized questionnaires
  • Extracranial duplexsonography
  • Duplexsonography of the abdominal aorta
  • Duplexsonography of femoral arteries
  • Duplexsonography of epicardial, intrabdominal and subcutaneous fat
  • Peripheral ultrasound, Ankle-arm index
  • ECG
  • Blood pressure measurement
  • BMI and Waist-hip ratio
  • Blood samples

Ages Eligible for Study:   15 Years to 60 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Documented ischemic stroke at age from 15 up to 60 years

Exclusion Criteria:

  • Stroke as end-of-life event among patients with cancer or other life-threatening disease
  • Stroke caused by trauma
  Contacts and Locations
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, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01597453

Contact: Ulrike Waje-Andreassen, MD, PhD +4755975045
Contact: Annette Fromm, MD +4755975045

Dep. of Neurology Recruiting
Bergen, Norway, 5053
Sub-Investigator: Annette Fromm, MD         
Principal Investigator: Ulrike Waje-Andreassen, MD, PhD         
Sponsors and Collaborators
Haukeland University Hospital
Principal Investigator: Ulrike Waje-Andreassen, MD, PhD Haukeland UH
  More Information

No publications provided by Haukeland University Hospital

Additional publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Haukeland University Hospital Identifier: NCT01597453     History of Changes
Other Study ID Numbers: 2010/74 
Study First Received: May 2, 2012
Last Updated: September 9, 2015
Health Authority: Norway: Regional Ethics Commitee

Keywords provided by Haukeland University Hospital:
Young ischemic stroke
Long-term follow-up

Additional relevant MeSH terms:
Cardiovascular Diseases
Carotid Artery Diseases
Peripheral Arterial Disease
Arterial Occlusive Diseases
Brain Diseases
Central Nervous System Diseases
Cerebrovascular Disorders
Nervous System Diseases
Peripheral Vascular Diseases
Vascular Diseases processed this record on February 11, 2016