Persons with DS who were A+/T+ had higher GFAP compared to A‐T‐ (125.200, 95% CI: 87.752, 161.180 pg/mL, p < 0.001) but not A+/T‐ (63.573, 95% CI: ‐5.210, 133.198 pg/mL, p = 0.142). The gene discussed is GFAP; the disease is Dravet syndrome.