Conversely, in ASD only 1 gene (CCNB2) passed the GS‐ALL threshold in the big brain subgroup (Fig 4B) and this difference in ratios (i.e. 19/19 in controls vs 1/19 in ASD) was highly significant (OR = 481, P = 3.35e‐9, CI = 18.4–12,570). This evidence concerns the gene CCNB2 and acute lymphoblastic leukemia.