SLC6A3 and autoimmune pancreatitis: For that purpose, the ESRS-based AIP indicators were compared between three groups: the carriers of both HTR6 T and SLC6A3 9R risk alleles; the carriers of either HTR6 T or SLC6A3 9R risk allele; and the carriers of neither HTR6 T nor SLC6A3 9R risk alleles (i.e., carriers of HTR6 C and SLC6A3 10R alleles).