In the comparison, among patients with different abnormal findings on brain CT (hypoxic-ischemic brain injury vs. ischemic stroke), NSE levels at 24, 48, and 72 h after ECPR did not show significant differences (115.0 [IQR, 72.7–149.0] vs. 127.9 [IQR, 77.3–202.5], p = 0.572 at 24 h; 168.5 [IQR, 95.0–213.0] vs. 225.3 [IQR, 138.1–260.8], p = 0.163 at 48 h; 127.3 [IQR, 90.2–258.0] vs. 268.6 [IQR, 101.7–464.0], p = 0.235 at 72 h); see Supplementary Figure S2. This evidence concerns the gene ENO2 and ischemic stroke.