FLVCR1 and retinitis pigmentosa: Typically, variants in FLVCR1 have been associated with a neurological syndrome, posterior column ataxia with retinitis pigmentosa (PCARP; MIM: 609033) [39,40,41], and more recently a specific splice variant (c.1092 + 5G>A) has been reported multiple times to be associated with non-syndromic RP [42,43,44].