FNDC5 and stroke disorder: In this study, the relationship between serum irisin levels in serum and classification of subtype of acute ischemic stroke (Trial of Org 10172 in Acute Stroke Treatment, TOAST), National Institutes of Health Stroke Scale (NIHSS) and Modified Rankin Score (mRS) at the time of discharge from the hospital in Turkish patients who had their first acute ischemic stroke (AIS) were investigated.