In our meta‐analysis of plasma GFAP (Table 4), for DS versus euploid controls, based on two studies involving 599 DS individuals and 235 euploid controls (without DS), the SMD was 0.54 (95% CI [0.27, 0.80], z = 3.98, p < 0.0001), indicating a significant increase in plasma GFAP levels in the DS group compared to euploid controls, with moderate heterogeneity (I2 = 50%, p = 0.16). Here, GFAP is linked to Dravet syndrome.