Observational Dutch Young Symptomatic StrokE studY - nEXT
ODYSSEY-nEXT
1 other identifier
observational
280
1 country
6
Brief Summary
BACKGROUND: Worldwide, 2 million patients aged 18-50 years suffer an ischemic stroke each year with an increasing trend over the past decade due to yet unknown reasons. Whereas prognosis and antithrombotic treatment in older patients with cardiovascular disease are among the best studied topics in clinical medicine, this does not hold true for patients at young age. It is of great importance to treat these patient groups correctly to prevent recurrence and bleeding complications. However, previous research have shown that there is a long-term increased risk of recurrent ischemic events despite the secondary prevention and a subsequent increased bleeding risk. To tailor effective antithrombotic therapy to the individual patient, it is essential to understand the underlying pathogenesis and identify modifiable risk factors in young patients for recurrence or bleeding. It is thought that abnormalities of hemostasis may play a key role in early-onset ischemic stroke. First, prothrombotic conditions are associated with an increased risk for ischemic stroke at young age. In addition, disturbance of the hemostatic balance due to one or several triggers can activate the coagulation cascade, which on its turn can lead or contribute to clot formation and subsequent arterial occlusion. In previous study, there were indications that trigger factors such as fever and/or an infection in the days prior to the stroke may play a role in the pathogenesis. This suggests that an interaction between inflammation, endothelial damage and coagulation may lead to the formation of a clot. In this observational study we aim to investigate the role of the immune system, endothelial damage and coagulation in the pathogenesis and prognosis of stroke in young patients. OBJECTIVE: To investigate the role of hemostasis, inflammation and endothelial activation in the etiology and prognosis in an acute ischemic stroke (or TIA) in young stroke patients. STUDY DESIGN: Multicentre prospective observational study STUDY POPULATION: All patients aged between 18 and 50 years old with a first-ever ischemic stroke or TIA who are admitted to the neurology ward or seen at the outpatient clinic of one of the participating centers. Main exclusion criteria are: history of clinical TIA, ischemic stroke or intracerebral hemorrhage. A intracerebral hemorrhage resulting from trauma, known aneurysm or underlying intracerebral malignancy. A venous infarction, retinal infarction and amourosis fugax. Inadequate control of the Dutch language to reliably sign an informed consent from and/or participate in the follow-up. Patients are excluded if they have a contra indication for 3T MRI. In addition 60 healthy controls (18-50 years old) will be included. MAIN STUDY ENDPOINTS:
- 1.Baseline and 3 months coagulation profile:
- 2.Baseline and 3 months inflammation/endothelial activation profile:
- 3.Vessel wall enhancement on 3 Tesla MRI
- 4.Questionnaire trigger factors
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started Feb 2023
Longer than P75 for all trials
6 active sites
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
Study Start
First participant enrolled
February 6, 2023
CompletedFirst Submitted
Initial submission to the registry
May 2, 2023
CompletedFirst Posted
Study publicly available on registry
May 11, 2023
CompletedPrimary Completion
Last participant's last visit for primary outcome
January 1, 2027
ExpectedStudy Completion
Last participant's last visit for all outcomes
January 1, 2037
May 11, 2023
May 1, 2023
3.9 years
May 2, 2023
May 2, 2023
Conditions
Outcome Measures
Primary Outcomes (1)
Difference of concentration biomarkers and coagulation assays between patients and controls
Biomarkers and assays of coagulation, inflammation and endothelium activation
At baseline and 3 month visit
Secondary Outcomes (6)
Nonfatal or fatal recurrent cardiovascular (ischemic) events
10 years
Recurrent venous thrombotic events
10 years
Death from any cause
10 years
Malignancy
10 years
Bleeding complications
10 years
- +1 more secondary outcomes
Other Outcomes (4)
Modified Rankin Scale
at 3-month visit and at annual follow-up contacts from year 1 to year 10
Functional outcome will be assessed with Barthel Index
at 3-month visit and at annual follow-up contacts from year 1 to year 10.
Coping strategies
at 3 months visit and 6 months
- +1 more other outcomes
Study Arms (2)
Patients with acute ischemic stroke at young age (18-50 years)
Patients aged 18 to 50 years with first-ever ischemic stroke or transient ischemic attack.
Healthy controls
Healthy controls (aged 18 to 50 years) without cardiovascular diseases in their medical history. Subjects age- and gender-matched to patients
Eligibility Criteria
Patients aged 18 to 49 hospitalized due to first-ever imaging-positive ischemic stroke or transient ischemic attack.
You may qualify if:
- Patients with a first-ever transient ischemic attack (TIA) or acute ischemic stroke aged between 18 and 50 years old
- For this study, acute stroke is defined as "occurence of acute neurological deficit lasting more than 24 hours, with confirmation on imaging (CT(-a) or MR(-a))".TIA is defined as "occurence of acute neurological deficit lasting less than 24 hours with confirmation of ischemia on MRI).
- Patients have a kidney function eGFR\>30ml/min.
You may not qualify if:
- A history of clinical TIA, ischemic stroke or intracerebral hemorrhage
- A intracerebral hemorrhage resulting from trauma, known aneurysm or underlying intracerebral malignancy.
- A venous infarction, retinal infarction or amourosis fugax.
- Inadequate control of the Dutch language to reliably sign an informed consent from and/or participate in the follow-up
- Patients are excluded if they have a contra indication for 3T MRI.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Radboud University Medical Centerlead
- Synapse bvcollaborator
Study Sites (6)
Radboudumc
Nijmegen, Gelderland, 6525 GA, Netherlands
Catharina Ziekenhuis
Eindhoven, North Brabant, 5623 EJ, Netherlands
Medisch Spectrum Twente
Enschede, Overijssel, 7512 KZ, Netherlands
Isala
Zwolle, Overijssel, 8025 AB, Netherlands
HagaZiekenhuis
The Hague, South Holland, 2545 AA, Netherlands
Medisch Centrum Leeuwarden
Leeuwarden, 8934 AD, Netherlands
Related Publications (1)
Spiegelenberg JP, Verburgt E, den Hertog H, de Laat KF, van Rooij FG, van Uden IWM, Arntz RM, van den Wijngaard IR, Kessels RPC, Piai V, van der Kolk A, Roest M, de Laat B, Middeldorp S, Tuladhar A, Leentjens J, de Leeuw FE. Role of inflammation and haemostasis on aetiology and prognosis in young patients with ischaemic stroke: study protocol of the Observational Dutch Young Symptomatic StrokE study-EXTended (ODYSSEY-nEXT) - a multicentre prospective cohort study. BMJ Open. 2025 Mar 21;15(3):e096330. doi: 10.1136/bmjopen-2024-096330.
PMID: 40118475DERIVED
Biospecimen
Patients and controls at baseline: 1 x 2.7 mL + 1 x 9ml sodium citrate tube, aliquoted in 4 x 1000 µL cryovials; 1 x 5 mL serum tube, aliquoted in 3 x 500 µL sterile cryovials; 1 x 3 mL EDTA tube, aliquoted in 3 x 500 µL cryovials; For 20 patients and 20 controls from the Radboudumc the following tubes were addionally collected for whole blood analysis: 1x 2.7 ml citrate tube 3 x 10 ml EDTA tube for PBMCs isolation and storage. Patients at 3-month visit: 1 x 2.7 mL + 1 x 9ml sodium citrate tube, aliquoted in 4 x 1000 µL cryovials; 1 x 5 mL serum tube, aliquoted in 3 x 500 µL sterile cryovials; 1 x 3 mL EDTA tube, aliquoted in 3 x 500 µL cryovials; For 20 patients and 20 controls from the Radboudumc the following tubes were addionally collected for whole blood analysis: 1x 2.7 ml citrate tube 3 x 10 ml EDTA tube for PBMCs isolation and storage.
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- observational
- Observational Model
- CASE CONTROL
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
May 2, 2023
First Posted
May 11, 2023
Study Start
February 6, 2023
Primary Completion (Estimated)
January 1, 2027
Study Completion (Estimated)
January 1, 2037
Last Updated
May 11, 2023
Record last verified: 2023-05