ENU-induced G to A transition at base pair 82,224,207 (v38) on chromosome 15, or base pair 174 in the GenBank genomic region NC_000081 encoding Tnfrsf13c. The mutation corresponds to residue 174 in the mRNA sequence NM_028075 within exon 1 of 3 total exons. The mutation results in a valine to methionine substitution at residue 36 (V36M) in the BAFF-R protein.