NCT04019483

Brief Summary

Rationale: Over 20.000 people suffer an ischemic stroke in the Netherlands each year. Large artery occlusions are easy to identify and can be treated with endovascular clot removal. 70% of patient will however suffer from a more distal occlusion resulting in small volume stroke or a transient ischemic attack (TIA). Small ischemic lesions are hard to detect with current acute stroke protocols. TIA and small volume stroke patients, are at an increased risk for recurrent stroke, making immediate diagnosis critical. Because thrombo-embolic sources often cause these strokes, identifying and treating the underlying aetiology has the potential to radically lower the risk of recurrence and improve the outcome of these patients. Objectives: 1) To identify clinical and imaging predictors of recurrent stroke; 2) To improve early detection of small volume stroke with admission computed tomography perfusion (CTP) in patients with suspected acute ischemic stroke with small volume stroke or no ischemia on admission imaging. Study design: Prospective, multicenter cohort study. Study population: All patients who visited the University Medical Center (UMC) Utrecht, the Amsterdam University Medical Centers (Amsterdam UMC), location Academic Medical Center (AMC) or the St. Antonius Hospital and who underwent a CT-scan of the brain within 9 hours after onset of stroke symptoms with an age ≥18 years. Within 36 months, 720 patients will be enrolled in the study. Of these patients, 300 patients will be included for the follow-up magnetic resonance imaging (MRI). Main study parameters/endpoints: The main study endpoints are: 1) Stroke recurrence rate at 2 years; 2) Presence and volume of acute ischemic lesions on follow-up diffusion weighted imaging MRI.

Trial Health

57
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
439

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Jan 2018

Longer than P75 for all trials

Geographic Reach
1 country

3 active sites

Status
terminated

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

January 23, 2018

Completed
1.5 years until next milestone

First Submitted

Initial submission to the registry

July 10, 2019

Completed
5 days until next milestone

First Posted

Study publicly available on registry

July 15, 2019

Completed
4.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 1, 2024

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

February 1, 2024

Completed
Last Updated

May 17, 2024

Status Verified

May 1, 2024

Enrollment Period

6 years

First QC Date

July 10, 2019

Last Update Submit

May 16, 2024

Conditions

Keywords

RecurrenceInfarct detectionCTMRIDiagnosisPrognosis

Outcome Measures

Primary Outcomes (1)

  • Recurrent ischemic stroke

    2 years

Secondary Outcomes (2)

  • Recurrent ischemic stroke

    90 days

  • modified Rankin scale

    90 days

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Patients 18 years or older with acute stroke symptoms who visited the UMC Utrecht, the Amsterdam UMC, location AMC or the St. Antonius Hospital and who underwent a CT-scan within 9 hours after onset of stroke symptoms.

You may qualify if:

  • Age ≥18 years;
  • Time from symptom onset until imaging is \<9 hours\*;
  • Clinical diagnosis of acute ischemic stroke or TIA;
  • Informed consent from patient or family after the admission scan (unless the patient died).
  • Patients who awaken with stroke symptoms can only be included if they went to sleep without any stroke symptoms and the time from going to sleep until imaging is less than 9 hours.

You may not qualify if:

  • Patients with another diagnosis such as intracerebral hemorrhage, subarachnoid hemorrhage or tumor;
  • Patients with known contrast allergy or renal failure.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (3)

Amsterdam UMC, location AMC

Amsterdam, North Holland, 1105 AZ, Netherlands

Location

St. Antonius Hospital

Nieuwegein, Utrecht, 3435 CM, Netherlands

Location

University Medical Center Utrecht

Utrecht, 3584 CX, Netherlands

Location

Related Publications (2)

  • Kauw F, Velthuis BK, Takx RAP, Guglielmo M, Cramer MJ, van Ommen F, Bos A, Bennink E, Kappelle LJ, de Jong HWAM, Dankbaar JW. Detection of Cardioembolic Sources With Nongated Cardiac Computed Tomography Angiography in Acute Stroke: Results From the ENCLOSE Study. Stroke. 2023 Mar;54(3):821-830. doi: 10.1161/STROKEAHA.122.041018. Epub 2023 Feb 13.

  • Kauw F, van Ommen F, Bennink E, Cramer MJ, Kappelle LJ, Takx RA, Velthuis BK, Viergever MA, Wouter van Es H, Schonewille WJ, Coutinho JM, Majoie CB, Marquering HA, de Jong HW, Dankbaar JW. Early detection of small volume stroke and thromboembolic sources with computed tomography: Rationale and design of the ENCLOSE study. Eur Stroke J. 2020 Dec;5(4):432-440. doi: 10.1177/2396987320966420. Epub 2020 Oct 23.

MeSH Terms

Conditions

Ischemic StrokeRecurrenceDisease

Condition Hierarchy (Ancestors)

StrokeCerebrovascular DisordersBrain DiseasesCentral Nervous System DiseasesNervous System DiseasesVascular DiseasesCardiovascular DiseasesDisease AttributesPathologic ProcessesPathological Conditions, Signs and Symptoms

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

July 10, 2019

First Posted

July 15, 2019

Study Start

January 23, 2018

Primary Completion

February 1, 2024

Study Completion

February 1, 2024

Last Updated

May 17, 2024

Record last verified: 2024-05

Data Sharing

IPD Sharing
Will not share

Locations