TNPO2 and neurodevelopmental disorder: Concerning his complex neurocognitive picture, not fully explainable by his WBS diagnosis, trio-WES was performed and a de novo heterozygous likely pathogenic variant was identified in TNPO2, p.Arg105ter (NM_001136196.2:c.313C>T), consistent with a concurrent novel neurodevelopmental disorder (OMIM #619556) [21].