Erratum: Correction to: DNA Methylation and Allelic Polymorphism at the Dopamine Transporter Promoter Affect Internalizing and Externalizing Symptoms in Preschoolers (Child psychiatry and human development (2021) 52 2 (281-290))

In the original version of the above published article, the authors would like to clarify few points listed below along with the revision in references number 17 and 20. 1. the original text refers to a DNA trait upstream from TSS while the investigated trait is located in the 5’-untranslated region (5’-UTR) between TSS and AUG. Namely, the pattern of methylation, studied in the 5’-UTR of the DAT1 gene, is relative to six specific CpG residues (termed M1, M2, M3, M5, M6, and M7) present between nucleotides + 714 and + 746 after the transcriptional start site (TSS) and before the protein start site (AUG), hence located in the transcribed mRNA but not in the mature mRNA (first intron). Notably, the CpG residues named M4 (+ 728 and + 729) shall be discarded, because of a SNP which may eliminate this whole CpG in some individuals. CpGs M1–M3 (+ 714–715, + 717–718, + 720–721) represent a CGGCGGCGG motif, while contiguous CpGs M5/M6 (+ 736–737 and + 738–739) represent a CGCG motif. 2. the authors acknowledge intellectual property by Adriani W, Laviola G, Pascale E, D’Addario C (inventors) “Metodo per determinare il deficit di attenzione con iperattività”. Italian Patent Application, at no. 102016000129938 (dated 22-December-2016); turned into European Patent Application, at no. 17830021.6 (dated 21-December-2017).