Gene: tocopherol (alpha) transfer protein; TTPA


Gene Symbol: TTPA
OMIM: 600415
Chromosome location: 8q12.3

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Ataxia with isolated vitamin E deficiency || c.744delA

Phenotype:    Ataxia with isolated vitamin E deficiency
Dna Change:    c.744delA
Protein Change:    p.Glu249AsnfsX15
Mutation Type:    Deletion
Mutation Effect:    Frameshift
Location:    exon 5
Transcript:    NM_000370.3

PopulationEthnic GroupRegionMutation FrquencyCoalescence TimeReference
MoroccoNANA3 familiesNAOuahchi K et al., 1995Ouahchi K, Arita M, Kayden H, Hentati F, Ben Hamida M, Sokol R, Arai H, Inoue K, Mandel JL, Koenig M, . Ataxia with isolated vitamin E deficiency is caused by mutations in the alpha-tocopherol transfer protein.. Nat. Genet.. 1995; 9(2):141-5
TunisiaNANA91.7% of the patients were homozygous (121/132 patients)NAEl Euch-Fayache G et al., 2014El Euch-Fayache G, Bouhlal Y, Amouri R, Feki M, Hentati F, . Molecular, clinical and peripheral neuropathy study of Tunisian patients with ataxia with vitamin E deficiency.. Brain. 2014; 137(0):402-10
TunisiaNANA5 familiesNAOuahchi K et al., 1995Ouahchi K, Arita M, Kayden H, Hentati F, Ben Hamida M, Sokol R, Arai H, Inoue K, Mandel JL, Koenig M, . Ataxia with isolated vitamin E deficiency is caused by mutations in the alpha-tocopherol transfer protein.. Nat. Genet.. 1995; 9(2):141-5

References

El Euch-Fayache G, Bouhlal Y, Amouri R, Feki M, Hentati F, Molecular, clinical and peripheral neuropathy study of Tunisian patients with ataxia with vitamin E deficiency.Brain. 2014; 137(0):402-10

Ouahchi K, Arita M, Kayden H, Hentati F, Ben Hamida M, Sokol R, Arai H, Inoue K, Mandel JL, Koenig M, Ataxia with isolated vitamin E deficiency is caused by mutations in the alpha-tocopherol transfer protein.Nat. Genet.. 1995; 9(2):141-5