Fig. 2From: Novel epigenetic clock for fetal brain development predicts prenatal age for cellular stem cell models and derived neuronsValidation of the Fetal Brain Clock in an independent fetal brain dataset. Shown are scatterplots comparing chronological age (x-axis; days post-conception (dpc)) against predicted epigenetic age (y-axis; days post-conception) calculated using A Fetal Brain Clock (FBC), B Horvath’s Multi Tissue Clock (MTC), C Knight’s Gestational Age Clock (GAC), and D Lee’s Control Placental Clock (CPC) on data from an independent validation dataset (n = 129, age range = 42–280 dpc). Two statistics were calculated to evaluate the precision of each DNAm clock: Pearson’s correlation coefficient (r) and the root mean squared error (RMSE). The dashed line in A indicates a chronological age of 185 dpc, which is the oldest age in the training dataset of the FBCBack to article page