FTH1 and Alzheimer disease: The role of FTH1 in retinogenesis, retinal neurodegeneration and neurodegenerative diseases such as AD has been previously described, prompting us to also investigate this FTH1 that might disrupt iron homeostasis inside healthy retinas, leading to retinal degeneration due to iron toxicity, while mutations in FTH1 have been associated with several neurodegenerative diseases [28,29,53].