Correction to: European Journal of Human Genetics https://doi.org/10.1038/s41431-020-0624-x, published online 24 April 2020

The following Acknowledgement was missing from this article.

Two of several authors of this publication are members of the European Reference Network for rare malformation syndromes and rare intellectual and neurodevelopmental disorders, ERN-ITHACA.

The original article has been corrected.