Nine patients from the testing set were finally classified as WDSTS (including four samples without KMT2A variant information (Pt.42, Pt.44, Pt.45, Pt.50), one with a canonical -1 splice site variant (Pt.43), one with a nonsense variant (Pt.49), two out of 11 with a missense variant (Pt.46, Pt.47), and one out of two with an in-frame deletion (Pt.48)). This evidence concerns the gene KMT2A and Wiedemann-Steiner syndrome.