ENU treatment caused an A>C mutation in the coding region (c.358A>C) that leads to to the change of isoleucine codon 120 to leucine (p.Ile120Leu). This mutation is linked to Gja8Aey69 and the two mutations are found in mice with a dominant small-eye phenotype (microphthalmia without a lens but with retinal hyperproliferation). (J:277247)