maternal transmission). Parental DNA from the patient with the p.A1239T variant was not
available. The patient with p.F905I (T/A alleles, III-6) inherited the A allele from the
heterozygous father (T/A, II-7). The proband had one first cousin with PDD-NOS (III-4) but
he did not carry the A allele (T/T). The other member (II-1) had been informed by the
proband’s father (II-7) that he had autistic features and social isolation, unfortunately, his
DNA and medical records were not available. The pedigree of the family with p.F905I is
shown in Figure 1b. The proband with p.F905I (III-6) was 4 years and 2 months of age and