EnDovascular Therapy Plus Best Medical Treatment (BMT) Versus BMT Alone for MedIum VeSsel Occlusion sTroke - a prAgmatic, International, Multicentre, Randomized triaL (DISTAL) (DISTAL)

  • End date
    Dec 23, 2024
  • participants needed
  • sponsor
    University Hospital, Basel, Switzerland
Updated on 23 October 2022


Acute ischemic stroke (AIS) is one of the main causes of disability and loss of quality adjusted life years. This study is to analyze whether endovascular therapy (EVT) in addition to best medical treatment (BMT) reduces the degree of disability and dependency in daily activities after a Medium Vessel Occlusion (MeVO) stroke compared to BMT alone.


Acute ischemic stroke (AIS) is one of the main causes of death and disability and thereby the third leading cause of loss of quality adjusted life years. For patients with an AIS due to an occlusion of the large vessels of the anterior circulation, endovascular therapy (EVT) has become a treatment standard. 20-40% of all AIS patients have occlusions of smaller vessels and present with a more distal isolated Medium Vessel Occlusion (MeVO). The primary objective of this randomized trial is to determine whether patients experiencing an AIS due to an isolated medium vessel occlusion have superior functional outcome (measured with the Modified Rankin Scale "mRS" at 90 days) when treated with EVT plus best medical treatment (BMT) compared to patients treated with BMT alone. In this trial, all commercially available, CE-certified revascularisation devices (i.e. stent-retriever, aspiration catheters and balloon guide catheters) can be used for EVT. All established techniques for the endovascular treatment of AIS patients are permitted and all decisions regarding treatment technique and choice of devices and/or medications are made solely by the treating physician.

Condition Acute Ischemic Stroke
Treatment Endovascular therapy
Clinical Study IdentifierNCT05029414
SponsorUniversity Hospital, Basel, Switzerland
Last Modified on23 October 2022


Yes No Not Sure

Inclusion Criteria

Acute ischemic stroke
Treatment (arterial puncture) can be initiated 2.1. Within 6 hours of last seen well (LSW) OR 2.2. Within 6 to 24 hours of LSW AND
CT Criteria: Evidence of a hypoperfusion-hypodensity mismatch (Absence of hypodensity on the noncontrast CT within ≥ 90% of the area of the hypoperfused lesion on perfusion CT)
MRI Criteria: Evidence of a diffusion-hyperintensity mismatch (Absence of hyperintensity on fluid-attenuated inversion recovery (FLAIR) imaging within ≥ 90% of the area of the diffusion weighted imaging(DWI) lesion)
Isolated medium vessel occlusion (i.e. an occlusion of the co-/non-dominant M2, the M3/M4 segment of theMCA, the A1/A2/A3 segment of the ACA or the P1/P2 segment of the PCA) confirmed by CT or MRIAngiography
National Institute of Health Stroke Scale (NIHSS) Score of ≥ 4 points or symptoms deemed clearly disabling by treating physician (i.e. aphasia, hemianopia, etc.)
Informed Consent as documented by signature or fulfilling the criteria for emergency consent/ deferral consent
Agreement of treating physician to perform endovascular procedure

Exclusion Criteria

Acute intracranial haemorrhage
Patient bedridden or presenting from a nursing home
In-Hospital Stroke
Known (serious) sensitivity to radiographic contrast agents, nickel, titanium metals or their alloys
Foreseeable difficulties in follow-up due to geographic reasons (e.g. patients living abroad)
Pregnancy or lactating women. A negative pregnancy test before randomisation is required for all women with child-bearing potential
Known history of arterial tortuosity, pre-existing stent, other arterial disease and/or known disease at the arterial access site that would prevent the device from reaching the target vessel and/or preclude safe recovery after EVT
Severe comorbidities, which will likely prevent improvement or follow-up
Radiological confirmed evidence of mass effect or intracranial tumour (except small meningioma)
Radiological confirmed evidence of cerebral vasculitis
Evidence of vessel recanalization prior to randomisation
Participation in another interventional trial
Clear my responses

How to participate?

Step 1 Connect with a study center
What happens next?
  • You can expect the study team to contact you via email or phone in the next few days.
  • Sign up as volunteer  to help accelerate the development of new treatments and to get notified about similar trials.

You are contacting

Investigator Avatar

Primary Contact


Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

Learn more

If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

Learn more

Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

Learn more

Similar trials to consider


Not finding what you're looking for?

Every year hundreds of thousands of volunteers step forward to participate in research. Sign up as a volunteer and receive email notifications when clinical trials are posted in the medical category of interest to you.

Sign up as volunteer

user name

Added by • 



Reply by • Private

Lorem ipsum dolor sit amet consectetur, adipisicing elit. Ipsa vel nobis alias. Quae eveniet velit voluptate quo doloribus maxime et dicta in sequi, corporis quod. Ea, dolor eius? Dolore, vel!

  The passcode will expire in None.

No annotations made yet

Add a private note
  • abc Select a piece of text from the left.
  • Add notes visible only to you.
  • Send it to people through a passcode protected link.
Add a private note