Table 2. Mutations in human plasmalemmal choline transporters.
| Gene | Protein name | Missense coding variants | Transport phenotype | Trafficking to target membrane | Disease phenotype | Mode of inheritance | OMIM# |
|---|---|---|---|---|---|---|---|
| SLC5A7 | CHT1 | K499Nfs*13 | Loss-of-function | Reduced | Distal hereditary motor neuronopathy | AD | 158580 |
| P509Lfs*3, K510Nfs*2, H521Qfs*2 | ? | ? | |||||
| D48G, G65E, P105S, R361Q, R446G, S263F | Loss-of-function | No change | Congenital myasthenic syndrome | AR/CHet | 617143 | ||
| S94R, V112E, P210L, | Loss-of-function | Altered | |||||
| I42*, Y111H, Y175C, I291T, P310L, V344L, F418V, S487P | ? | ? | |||||
| SLC44A1 | CTL1 | D517Mfs*19 K90Mfs*18, S126Mfs*8 | Loss-of-function | Unaltered Reduced | Childhood-onset neurodegeneration with ataxia, tremor, optic atrophy, and cognitive decline (CONATOC) | AR | 618868 |
| SLC44A4 | CTL4 | D47V | ? | ? | Age-related macular degeneration and blindness | ? | |
| M156V | Loss-of-function | ? | Postlingual non-syndromic mid-frequency sensorineural hearing loss | AD | 617606 | ||
AR: Autosomal recessive; AD: Autosomal dominant; CHet: Compound heterozygotes.