nearly significantp = 0.054
AS Mothers Display a Higher Methylation Level Than ADHD and Healthy Control Mothers The mean percentage of methylation among the three groups was significantly different for the HTR1A and the RELN genes (F = 14.080, p = 0, n = 2; F = 8.240, p = 0, n = 2, respectively), nearly significant for the MTHFR gene (F = 2.978, p = 0.054, n = 2) and not significant for the BDNF gene ( Table 2 and Figure 1 ).