A study by Koning J.P. et al. (2011) found no statistically significant associations of the SNV rs6280 (Ser9Gly; T/C) of the DRD3 gene with the risk of developing AIP when assessed by the UPDRS scale in schizophrenic patients treated with APs for at least 1 month [43]. This evidence concerns the gene DRD3 and autoimmune pancreatitis.