To determine the associations between AIS extent and YKL-40 and CRP levels in a homogenous etiologic (noncardiogenic) group, we analyzed YKL-40 and CRP levels in the context of 2 stroke subtypes (LAA and SVO) and found that the levels were dependent on AIS subtype and admission day (Fig. 2). The gene discussed is CHI3L1; the disease is Stroke.