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Table 1 Classification of stroke subtypes from TOAST [12]

From: Three periods of one and a half decade of ischemic stroke susceptibility gene research: lessons we have learned

Subtype

Classification

1

Large-artery atherosclerosis (embolus/thrombosis)

2

Small-vessel occlusion (lacune)

3

Cardioembolism (high-risk/medium-risk)

4

Stroke of other determined etiology

5

Stroke of undetermined etiology

 

   (a) Two or more causes identified

 

   (b) Negative evaluation

 

   (c) Incomplete evaluation

  1. The classification of subtypes 1 to 4 includes possible or probable cases according to the results of ancillary studies as well as certain diagnoses.
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Genome Medicine

ISSN: 1756-994X

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