There are reports of other mouse models with retinal DHA deficiency including elongation of very-long-chain fatty acids-like 2 (Elovl2) mutant (52), acyl-CoA synthetase 6 (Ascl6) knockout (53), major facilitator superfamily domain containing 2A (Mfsd2a) knockout (54, 55), and adiponectin receptor 1 (Adipor1) knockout mice (56, 57) that show similar retinal pathologies to those observed in Tmem135FUN025/FUN025 mutant mice (11, 16, 47). This evidence concerns the gene ADIPOR1 and hyperinsulinemic hypoglycemia, familial, 4.