Nucleotide substitutions (c.5458C>T, c.5471G>A in NM_009347) result in the amino acid substitutions of lysine with phenylalanine at position 1820 (p.L1820F) and glycine with aspartic acid at position 1824 (p.G1824D). Cre-mediated recombination removed the loxP site flanked neomycin resistance gene cassette that was also inserted. (J:203482)