ENU-induced A to T transversion at base pair 58,603,179 (v38) on chromosome 10, or base pair 72,518 in the GenBank genomic region NC_000076.6. The mutation corresponds to residue 1,289 in the mRNA sequence NM_010100 within exon 12 of 12 total exons. The mutation results in a serine to cysteine substitution at position 344 (S344C) in the EDAR protein.