ENU treatment induced a C-to-A (or T-to-A in C57BL/6J, BALB/cJ, A/J and WSB/EiJ strains, see SNP rs30016529) mutation at position GRCm39:chr6:115876490 resulting in a premature stop codon (TAA) at codon 575 in exon 15 in place of the tyrosine codon (TAC or TAT). (J:304031)