We also evaluated HLA‐G allelic frequency in families of autistic children and found that the tolerogenic HLA‐G*01:01 allele is less common, whereas the NK‐activating HLA‐G*01:05N allele is more frequent in affected children and their mothers than controls (Figure 2),64 and correlated with the extent of behavioural disorder in autistic children.65 Here, HLA-G is linked to Atypical behavior.