{
  "url": "https://dantelabs.com/it/genes/ttpa",
  "gene": {
    "slug": "ttpa",
    "symbol": "TTPA",
    "name": "alpha tocopherol transfer protein",
    "hgnc": "HGNC:12404",
    "summary": null,
    "location": "8q12.3",
    "locusType": "gene with protein product",
    "aliases": [],
    "previousSymbols": [
      "AVED"
    ],
    "ensemblId": "ENSG00000137561",
    "entrezId": 7274,
    "omim": [
      "600415"
    ],
    "uniprot": [
      "P49638"
    ],
    "model": {
      "build": "GRCh38",
      "release": "v1.5",
      "chrom": "8",
      "start": 63059488,
      "end": 63086053,
      "strand": "-",
      "ensemblTranscript": "ENST00000260116.5",
      "refseqTranscript": "NM_000370.3",
      "ensemblProtein": "ENSP00000260116.4",
      "refseqProtein": "NP_000361.1",
      "exons": [
        {
          "start": 63059488,
          "end": 63061425
        },
        {
          "start": 63064206,
          "end": 63064316
        },
        {
          "start": 63065904,
          "end": 63066097
        },
        {
          "start": 63072935,
          "end": 63073088
        },
        {
          "start": 63085818,
          "end": 63086053
        }
      ],
      "cds": {
        "start": 63061252,
        "end": 63086021
      }
    },
    "grch37": {
      "build": "GRCh37",
      "release": "87",
      "chrom": "8",
      "start": 63961112,
      "end": 63998612,
      "strand": "-"
    },
    "neighbourhood": {
      "release": "116",
      "start": 62572771,
      "end": 63572770,
      "genes": [
        {
          "symbol": "NKAIN3",
          "ensemblId": "ENSG00000185942",
          "biotype": "protein_coding",
          "start": 62248591,
          "end": 63014006,
          "strand": "+",
          "slug": "nkain3"
        },
        {
          "symbol": "GGH",
          "ensemblId": "ENSG00000137563",
          "biotype": "protein_coding",
          "start": 63014881,
          "end": 63039407,
          "strand": "-",
          "slug": "ggh"
        },
        {
          "symbol": "YTHDF3",
          "ensemblId": "ENSG00000185728",
          "biotype": "protein_coding",
          "start": 63168260,
          "end": 63212786,
          "strand": "+",
          "slug": "ythdf3"
        }
      ],
      "truncated": false
    },
    "reports": [
      {
        "slug": "autosomal-recessive-cerebellar-ataxias",
        "name": "Atassie cerebellari autosomiche recessive (incluse CANVAS e AVED)",
        "diseases": [
          {
            "mondoId": "MONDO:0015244",
            "name": "Atassia cerebellare autosomica recessiva",
            "genes": 57,
            "inheritance": "autosomal-recessive",
            "description": "Un gruppo di atassie a trasmissione recessiva causate da varianti bialleliche in geni come RFC1, FXN, SACS, TTPA, SETX, APTX, PNKP, ANO10 e SYNE1.",
            "management": "L'atassia con deficit di vitamina E (TTPA) è trattabile con integratori di vitamina E; le altre forme sono gestite con fisioterapia e cure sintomatiche, e ai familiari può essere proposto il test di portatore.",
            "evidence": {
              "gencc": [
                "G2P",
                "Labcorp Genetics (formerly Invitae)",
                "Myriad Women's Health",
                "Natera",
                "PanelApp Australia"
              ],
              "acmgSf": false,
              "inheritance": [
                "autosomal-recessive"
              ]
            },
            "sameAsReport": false,
            "broad": true
          }
        ],
        "url": "https://dantelabs.com/it/conditions/autosomal-recessive-cerebellar-ataxias"
      }
    ],
    "pharmacogenomics": [],
    "traits": [],
    "phenotypes": [
      {
        "slug": "gait-disturbance",
        "name": "Abnormal gait",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "obligate",
        "url": "https://dantelabs.com/traits/gait-disturbance"
      },
      {
        "slug": "arrhythmia",
        "name": "Abnormal heart rate",
        "systems": [
          "abnormality-of-the-cardiovascular-system"
        ],
        "frequency": "occasional",
        "url": "https://dantelabs.com/traits/arrhythmia"
      },
      {
        "slug": "abnormal-pyramidal-sign",
        "name": "Abnormal pyramidal sign",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "very-frequent",
        "url": "https://dantelabs.com/traits/abnormal-pyramidal-sign"
      },
      {
        "slug": "abnormal-retinal-pigmentation",
        "name": "Abnormal retinal pigmentation",
        "systems": [
          "abnormality-of-the-eye"
        ],
        "frequency": "occasional",
        "url": "https://dantelabs.com/traits/abnormal-retinal-pigmentation"
      },
      {
        "slug": "abnormal-speech-pattern",
        "name": "Abnormal speech pattern",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "frequent",
        "url": "https://dantelabs.com/traits/abnormal-speech-pattern"
      },
      {
        "slug": "abnormality-of-visual-evoked-potentials",
        "name": "Abnormality of visual evoked potentials",
        "systems": [
          "abnormality-of-the-eye",
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "occasional",
        "url": "https://dantelabs.com/traits/abnormality-of-visual-evoked-potentials"
      },
      {
        "slug": "areflexia",
        "name": "Absent reflexes",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "very-frequent",
        "url": "https://dantelabs.com/traits/areflexia"
      },
      {
        "slug": "ataxia",
        "name": "Ataxia",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "obligate",
        "url": "https://dantelabs.com/traits/ataxia"
      },
      {
        "slug": "babinski-sign",
        "name": "Babinski sign",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "very-frequent",
        "url": "https://dantelabs.com/traits/babinski-sign"
      },
      {
        "slug": "clumsiness",
        "name": "Clumsiness",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "obligate",
        "url": "https://dantelabs.com/traits/clumsiness"
      },
      {
        "slug": "sensory-neuropathy",
        "name": "Damage to nerves that sense feeling",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "frequent",
        "url": "https://dantelabs.com/traits/sensory-neuropathy"
      },
      {
        "slug": "cerebellar-atrophy",
        "name": "Degeneration of cerebellum",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "obligate",
        "url": "https://dantelabs.com/traits/cerebellar-atrophy"
      },
      {
        "slug": "delayed-somatosensory-central-conduction-time",
        "name": "Delayed somatosensory central conduction time",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "obligate",
        "url": "https://dantelabs.com/traits/delayed-somatosensory-central-conduction-time"
      },
      {
        "slug": "diabetes-mellitus",
        "name": "Diabetes mellitus",
        "systems": [
          "abnormality-of-metabolism-homeostasis",
          "abnormality-of-the-endocrine-system"
        ],
        "frequency": "occasional",
        "url": "https://dantelabs.com/traits/diabetes-mellitus"
      },
      {
        "slug": "nyctalopia",
        "name": "Difficulties with night vision",
        "systems": [
          "abnormality-of-the-eye"
        ],
        "frequency": "frequent",
        "url": "https://dantelabs.com/traits/nyctalopia"
      },
      {
        "slug": "dysarthria",
        "name": "Difficulty articulating speech",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "obligate",
        "url": "https://dantelabs.com/traits/dysarthria"
      },
      {
        "slug": "dysdiadochokinesis",
        "name": "Difficulty performing quick and alternating movements",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "obligate",
        "url": "https://dantelabs.com/traits/dysdiadochokinesis"
      },
      {
        "slug": "dystonia",
        "name": "Dystonia",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "obligate",
        "url": "https://dantelabs.com/traits/dystonia"
      },
      {
        "slug": "hypercholesterolemia",
        "name": "Elevated serum cholesterol",
        "systems": [
          "abnormality-of-metabolism-homeostasis"
        ],
        "url": "https://dantelabs.com/traits/hypercholesterolemia"
      },
      {
        "slug": "hypertrophic-cardiomyopathy",
        "name": "Enlarged and thickened heart muscle",
        "systems": [
          "abnormality-of-the-cardiovascular-system"
        ],
        "frequency": "occasional",
        "url": "https://dantelabs.com/traits/hypertrophic-cardiomyopathy"
      },
      {
        "slug": "xanthelasma",
        "name": "Fatty deposits in skin around the eyes",
        "systems": [
          "abnormality-of-head-or-neck",
          "abnormality-of-the-integument"
        ],
        "url": "https://dantelabs.com/traits/xanthelasma"
      },
      {
        "slug": "head-titubation",
        "name": "Head titubation",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "frequent",
        "url": "https://dantelabs.com/traits/head-titubation"
      },
      {
        "slug": "pes-cavus",
        "name": "High-arched foot",
        "systems": [
          "abnormality-of-limbs"
        ],
        "frequency": "frequent",
        "url": "https://dantelabs.com/traits/pes-cavus"
      },
      {
        "slug": "impaired-proprioception",
        "name": "Impaired proprioception",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "obligate",
        "url": "https://dantelabs.com/traits/impaired-proprioception"
      },
      {
        "slug": "elevated-circulating-ldl-c-concentration",
        "name": "Increased circulating LDL level",
        "systems": [
          "abnormality-of-metabolism-homeostasis"
        ],
        "url": "https://dantelabs.com/traits/elevated-circulating-ldl-c-concentration"
      },
      {
        "slug": "hypertriglyceridemia",
        "name": "Increased plasma triglycerides",
        "systems": [
          "abnormality-of-metabolism-homeostasis"
        ],
        "url": "https://dantelabs.com/traits/hypertriglyceridemia"
      },
      {
        "slug": "nystagmus",
        "name": "Involuntary, rapid, rhythmic eye movements",
        "systems": [
          "abnormality-of-the-eye"
        ],
        "frequency": "frequent",
        "url": "https://dantelabs.com/traits/nystagmus"
      },
      {
        "slug": "dysmetria",
        "name": "Lack of coordination of movement",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "obligate",
        "url": "https://dantelabs.com/traits/dysmetria"
      },
      {
        "slug": "developmental-regression",
        "name": "Loss of developmental milestones",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "occasional",
        "url": "https://dantelabs.com/traits/developmental-regression"
      },
      {
        "slug": "mental-deterioration",
        "name": "Mental deterioration",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "occasional",
        "url": "https://dantelabs.com/traits/mental-deterioration"
      },
      {
        "slug": "skeletal-muscle-atrophy",
        "name": "Muscle degeneration",
        "systems": [
          "abnormality-of-the-musculoskeletal-system"
        ],
        "frequency": "occasional",
        "url": "https://dantelabs.com/traits/skeletal-muscle-atrophy"
      },
      {
        "slug": "muscle-weakness",
        "name": "Muscle weakness",
        "systems": [
          "abnormality-of-the-musculoskeletal-system"
        ],
        "frequency": "very-frequent",
        "url": "https://dantelabs.com/traits/muscle-weakness"
      },
      {
        "slug": "hemiplegia-hemiparesis",
        "name": "Paralysis or weakness of one side of body",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "occasional",
        "url": "https://dantelabs.com/traits/hemiplegia-hemiparesis"
      },
      {
        "slug": "peripheral-neuropathy",
        "name": "Peripheral neuropathy",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "very-frequent",
        "url": "https://dantelabs.com/traits/peripheral-neuropathy"
      },
      {
        "slug": "perseverative-thought",
        "name": "Perseverative thought",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "obligate",
        "url": "https://dantelabs.com/traits/perseverative-thought"
      },
      {
        "slug": "pigmentary-retinopathy",
        "name": "Pigmentary retinopathy",
        "systems": [
          "abnormality-of-the-eye"
        ],
        "frequency": "very-rare",
        "url": "https://dantelabs.com/traits/pigmentary-retinopathy"
      },
      {
        "slug": "positive-romberg-sign",
        "name": "Positive Romberg sign",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "obligate",
        "url": "https://dantelabs.com/traits/positive-romberg-sign"
      },
      {
        "slug": "progressive-cerebellar-ataxia",
        "name": "Progressive cerebellar ataxia",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "obligate",
        "url": "https://dantelabs.com/traits/progressive-cerebellar-ataxia"
      },
      {
        "slug": "scoliosis",
        "name": "Scoliosis",
        "systems": [
          "abnormality-of-the-musculoskeletal-system"
        ],
        "frequency": "frequent",
        "url": "https://dantelabs.com/traits/scoliosis"
      },
      {
        "slug": "short-term-memory-impairment",
        "name": "Short term memory impairment",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "obligate",
        "url": "https://dantelabs.com/traits/short-term-memory-impairment"
      },
      {
        "slug": "hypertonia",
        "name": "Spasticity and rigidity of muscles",
        "systems": [
          "abnormality-of-the-musculoskeletal-system"
        ],
        "frequency": "occasional",
        "url": "https://dantelabs.com/traits/hypertonia"
      },
      {
        "slug": "tendon-xanthomatosis",
        "name": "Tendon xanthomatosis",
        "systems": [
          "abnormality-of-the-integument",
          "abnormality-of-the-musculoskeletal-system"
        ],
        "url": "https://dantelabs.com/traits/tendon-xanthomatosis"
      },
      {
        "slug": "tremor",
        "name": "Tremor",
        "systems": [
          "abnormality-of-the-nervous-system"
        ],
        "frequency": "occasional",
        "url": "https://dantelabs.com/traits/tremor"
      },
      {
        "slug": "urinary-urgency",
        "name": "Urinary urgency",
        "systems": [
          "abnormality-of-the-genitourinary-system"
        ],
        "frequency": "occasional",
        "url": "https://dantelabs.com/traits/urinary-urgency"
      },
      {
        "slug": "visual-impairment",
        "name": "Visual impairment",
        "systems": [
          "abnormality-of-the-eye"
        ],
        "frequency": "occasional",
        "url": "https://dantelabs.com/traits/visual-impairment"
      },
      {
        "slug": "decreased-circulating-vitamin-e-concentration",
        "name": "Vitamin E deficiency",
        "systems": [
          "abnormality-of-metabolism-homeostasis"
        ],
        "frequency": "obligate",
        "url": "https://dantelabs.com/traits/decreased-circulating-vitamin-e-concentration"
      }
    ],
    "related": [
      {
        "slug": "ahi1",
        "symbol": "AHI1",
        "name": "Abelson helper integration site 1",
        "shared": 1,
        "url": "https://dantelabs.com/it/genes/ahi1"
      },
      {
        "slug": "ano10",
        "symbol": "ANO10",
        "name": "anoctamin 10",
        "shared": 1,
        "url": "https://dantelabs.com/it/genes/ano10"
      },
      {
        "slug": "atcay",
        "symbol": "ATCAY",
        "name": "ATCAY kinesin light chain interacting caytaxin",
        "shared": 1,
        "url": "https://dantelabs.com/it/genes/atcay"
      },
      {
        "slug": "atg7",
        "symbol": "ATG7",
        "name": "autophagy related 7",
        "shared": 1,
        "url": "https://dantelabs.com/it/genes/atg7"
      },
      {
        "slug": "atp8a2",
        "symbol": "ATP8A2",
        "name": "ATPase phospholipid transporting 8A2",
        "shared": 1,
        "url": "https://dantelabs.com/it/genes/atp8a2"
      },
      {
        "slug": "ca8",
        "symbol": "CA8",
        "name": "carbonic anhydrase 8 (inactive)",
        "shared": 1,
        "url": "https://dantelabs.com/it/genes/ca8"
      },
      {
        "slug": "cc2d2a",
        "symbol": "CC2D2A",
        "name": "coiled-coil and C2 domain containing 2A",
        "shared": 1,
        "url": "https://dantelabs.com/it/genes/cc2d2a"
      },
      {
        "slug": "cep290",
        "symbol": "CEP290",
        "name": "centrosomal protein 290",
        "shared": 1,
        "url": "https://dantelabs.com/it/genes/cep290"
      },
      {
        "slug": "cep41",
        "symbol": "CEP41",
        "name": "centrosomal protein 41",
        "shared": 1,
        "url": "https://dantelabs.com/it/genes/cep41"
      },
      {
        "slug": "coa7",
        "symbol": "COA7",
        "name": "cytochrome c oxidase assembly factor 7",
        "shared": 1,
        "url": "https://dantelabs.com/it/genes/coa7"
      },
      {
        "slug": "coq8a",
        "symbol": "COQ8A",
        "name": "coenzyme Q8A",
        "shared": 1,
        "url": "https://dantelabs.com/it/genes/coq8a"
      },
      {
        "slug": "cspp1",
        "symbol": "CSPP1",
        "name": "centrosome and spindle pole associated protein 1",
        "shared": 1,
        "url": "https://dantelabs.com/it/genes/cspp1"
      }
    ],
    "sources": {
      "bundleId": "2026.10.17-8666dff2",
      "panel": "2026-10-17",
      "acmgSf": "SF v3.2"
    },
    "locusKind": "proteinCoding"
  },
  "variants": {
    "total": 0,
    "url": null,
    "items": []
  }
}