The role of <i>CYP2C19</i> genotyping to guide antiplatelet therapy following ischemic stroke or transient ischemic attack.

As already reviewed, the study by Spokoyny et al showed a trend towards an interaction and was likely underpowered to identify a significant association, however this was not the case in Hoh et al.

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Increasing sample size might mean that in studies where there is already a strong trend towards significance, such as SPS3, are able to demonstrate statistical significance.

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