A further distinction of non-Asperger groups allowed us to confirm the Asperger-related CLEC7A rs2078178 G allele and GG genotype signature (G allele and GG genotype: 82 vs. 70%, p = 0.009, pc = 0.01, OR = 1.95, [CI95%] = 1.15–3.43 and 71 vs. 50%, p = 0.005, pc = 0.01 OR = 2.42, [CI95%] = 1.26–4.83 in Asperger and classical autism respectively; 82 vs. 70% p = 0.02, pc = 0.04, OR = 1.95, [CI95%] = 1.06–3.67 and 71 vs. 53%, p = 0.03, pc = 0.06 OR = 2.18, [CI95%] = 1.02–4.79 in Asperger and PDD-NOS respectively (Table 4). Here, CLEC7A is linked to pervasive developmental disorder - not otherwise specified.