{
  "data": {
    "__count": 1,
    "__licence": {
      "identifier": "CC-BY-4.0",
      "link": "https://creativecommons.org/licenses/by/4.0",
      "name": "Creative Commons Attribution 4.0 International"
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    "results": {
      "Date": "2026-06-23 07:57:58",
      "DisorderGroup": "Disorder",
      "ORPHAcode": 845,
      "OrphanetURL": "http://www.orpha.net/consor/cgi-bin/OC_Exp.php?lng=en&Expert=845",
      "Preferred term": "Tay-Sachs disease",
      "Prevalence": [
        {
          "PrevalenceClass": "1-5 / 10 000",
          "PrevalenceGeographic": "Specific population",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "20301397[PMID]",
          "ValMoy": "27.8"
        },
        {
          "PrevalenceClass": "1-9 / 1 000 000",
          "PrevalenceGeographic": "Specific population",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Annual incidence",
          "PrevalenceValidationStatus": "Not yet validated",
          "Source": "ORPHANET",
          "ValMoy": "0.5"
        },
        {
          "PrevalenceClass": "1-9 / 1 000 000",
          "PrevalenceGeographic": "Europe",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "ORPHANET",
          "ValMoy": "0.31"
        },
        {
          "PrevalenceClass": "1-9 / 100 000",
          "PrevalenceGeographic": "Portugal",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "14685153[PMID]",
          "ValMoy": "3.13"
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        {
          "PrevalenceClass": "1-9 / 1 000 000",
          "PrevalenceGeographic": "Czech Republic",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "20490927[PMID]",
          "ValMoy": "0.3"
        },
        {
          "PrevalenceClass": "1-9 / 1 000 000",
          "PrevalenceGeographic": "Australia",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "9918480[PMID]",
          "ValMoy": "0.5"
        },
        {
          "PrevalenceClass": "1-9 / 1 000 000",
          "PrevalenceGeographic": "Worldwide",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "ISBN:0870684507[OTHER]",
          "ValMoy": "0.28"
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        {
          "PrevalenceClass": "1-9 / 1 000 000",
          "PrevalenceGeographic": "Netherlands",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "10480370[PMID]",
          "ValMoy": "0.41"
        },
        {
          "PrevalenceClass": "1-9 / 1 000 000",
          "PrevalenceGeographic": "Canada",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "10617747[PMID]",
          "ValMoy": "0.29"
        },
        {
          "PrevalenceClass": "1-9 / 1 000 000",
          "PrevalenceGeographic": "United Arab Emirates",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "23430803[PMID]",
          "ValMoy": "0.74"
        },
        {
          "PrevalenceClass": "1-9 / 1 000 000",
          "PrevalenceGeographic": "Turkey",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "15275696[PMID]",
          "ValMoy": "0.23"
        },
        {
          "PrevalenceClass": "1-9 / 1 000 000",
          "PrevalenceGeographic": "Sweden",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "25274184[PMID]",
          "ValMoy": "0.48"
        },
        {
          "PrevalenceClass": "Unknown",
          "PrevalenceGeographic": "Europe",
          "PrevalenceQualification": "Class only",
          "PrevalenceType": "Point prevalence",
          "PrevalenceValidationStatus": "Validated",
          "Source": "ORPHANET",
          "ValMoy": "0.0"
        },
        {
          "PrevalenceClass": "Unknown",
          "PrevalenceGeographic": "Worldwide",
          "PrevalenceQualification": "Class only",
          "PrevalenceType": "Point prevalence",
          "PrevalenceValidationStatus": "Validated",
          "Source": "ORPHANET",
          "ValMoy": "0.0"
        }
      ],
      "Typology": "Disease"
    }
  },
  "datasetCategory": {
    "lang": "en",
    "name": "Epidemiology of rare diseases"
  },
  "parameters": {
    "path": {
      "ORPHAcode": 845
    },
    "query": {}
  },
  "uri": "https://api.orphadata.com/rd-epidemiology/orphacodes/845"
}