FLVCR1 and Posterior column ataxia - retinitis pigmentosa: Furthermore, most patients harboring mutations in the FLVCR1 gene have been reported to suffer from a childhood-onset autosomal-recessive disorder known as Posterior Column Ataxia and Retinitis Pigmentosa (PCARP) [58–63], by non-syndromic Retinitis Pigmentosa (ns-RP) [64–68], and by Hereditary Sensory and Autonomic Neuropathy (HSAN) [28, 32, 69–71].