| CPC A61K 31/165 (2013.01) [A61K 45/06 (2013.01); A61P 25/24 (2018.01)] | 17 Claims | 

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               1. A method of treating major depressive disorder in a patient, 
            where the patient is being treated with an antidepressant other than agomelatine but has failed to adequately respond to the antidepressant, the method comprising: 
                (a) measuring EEG sample entropy in the 30-40 Hz frequency range in the patient; and 
                (b) upon the patient being determined to be responsive to agomelatine based on having high EEG sample entropy, administering to the patient an effective amount of (i) agomelatine or a pharmaceutically acceptable salt thereof and (ii) the antidepressant. 
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