CERKL and retinitis pigmentosa: The highest expression ratio (2.20) between DS AMKL and TMD was observed in a segment on chromosome 2 (2q31.3), including the known gene ITGA4, encoding an alpha 4 chain of integrin protein and CERKL, a gene responsible for retinitis pigmentosa and involved in the protection of cells from apoptosis induced by oxidative stress [47].