HMGN3 and Dravet syndrome: Z-ratio data for HMGN3 showed significant overexpression values in the brain of DS during the first year (0-12 months), childhood (2 to 10 years), 12- to 22-year-old samples, and adulthood (32 to 42 years old), but not in brain samples of prenatal brain samples (16 to 22 weeks of gestation; Z-ratio = 1.08) (Table 3).