Retinitis pigmentosa and pigmentary retinopathies have been associated with both forms making both MTTP and TTPA plausible candidate genes for retinopathy with vitamin E deficiency (RVED) (Matsuo et al. 1994; Yokota et al. 1996, 1997, 2000; Shimohata et al. 1998; Benomar et al. 2002; Mariotti et al. 2004; Ferreira et al. 2014; Iwasa et al. 2014; Nagappa et al. 2014; Abramowicz et al. 2024). This evidence concerns the gene TTPA and retinal disorder.