Two other ENU-induced semidominant mutations in the Mitf gene have been described, which have somewhat different phenotypes than Mitfmi/mi and MitfMi-or mice, such as the absence of osteopetrosis, but the homozygotes still have severe microphthalmia and are unpigmented, while heterozygotes, in some cases, have pigmented patches in the coat and a normal eye size. Here, MITF is linked to microphthalmia.