Levels of MT2 decrease with ageing, implying a role of these proteins in the development of age-related neurodegenerative pathologies, i.e., Alzheimer’s and Parkinson’s diseases70 and retinal diseases such as age-related macular degeneration (AMD) and retinitis pigmentosa (RP)71. The gene discussed is MT2A; the disease is age-related macular degeneration.