In the GSE141065 dataset [50] containing methylation data in cord blood cells from 557 participants, we replicated the association of neonatal sex with methylation of SLC6A4 sites #10 and #14 as well as no association of GDM with methylation of SLC6A4 sites #10 and #14 and HTR2A sites -1664 and -1224 (Additional file 1: Figure S3). This evidence concerns the gene HTR2A and gestational diabetes.