This variant is found in exon 8 of a gene adjacent to DRD2 (ANKK1: Ankyrin repeat and kinase domain containing 1), it changes glutamate to lysine at codon 713 (Céspedes, 2017) and has been linked to a lower receptor density (Blum et al., 2018), self-regulation disorders, excessive consumption of food and loss of control over dietary intake (Ariza et al., 2012) and obesity and addiction (McDonell et al., 2018). Here, ANKK1 is linked to obesity due to melanocortin 4 receptor deficiency.