In addition to non-synonymous mutations previously identified in ID8 cells (Walton et al., 2016), we detected two additional changes in Hjurp. In ID8-IP cells, new mutations were identified in Xxylt1 and Atxn10. Overall, the mutational burden within both ID8 and ID8-IP cells is low. This evidence concerns the gene XXYLT1 and incontinentia pigmenti.