A G-to-A polymorphism at coding nucleotide 3762 (SNP rs247587933) changes codon 1254 from arginine to glutamine (p.R1254Q). This G variant (with the arginine codon) is the major allele found in the C57BL/6NJ, AKR/J, CAST/EiJ, DBA/2J, NOD/ShiLtJ, NZO/HILtJ, PWK/PhJ, SPRET/EiJ, and WSB/EiJ strains. (J:38977)