The targeting vector is designed to insert an amino acid substitution at position 165 altering alanine to valine (A165V; chr14:34571772 C to T; GRCm38/mm10) into exon 6. The substitution is followed by a loxP-flanked neomycin cassette in intron 6. Cre-mediated recombination removed the loxP-flanked neo cassette. (J:305082)