Figure 3. Validation and segregation analysis.
(A) Sanger sequencing confirmed segregation of the NAA10 variant with the phenotype and the de novo status of the variant in the carrier mother (II:2). *The maternal grandfather’s DNA was not available for analysis. However, sequencing of his unaffected daughters showed that they do not carry the NAA10 variant on their paternal X chromosome indicating that the grandfather was hemizygous for the reference allele. (B) The NAA10 NM_001256120.1 c.128A > C p.(Tyr43Ser) was validated by Sanger sequence analysis. The inverted triangle indicates the position of the mutated A > C base on the forward strand which results in the substitution of Tyr (Y) with Ser (S) at residue 43.