{
  "data": {
    "__count": 1,
    "__licence": {
      "identifier": "CC-BY-4.0",
      "link": "https://creativecommons.org/licenses/by/4.0",
      "name": "Creative Commons Attribution 4.0 International"
    },
    "results": {
      "Date": "2026-06-23 07:57:58",
      "DisorderGroup": "Disorder",
      "ORPHAcode": 512,
      "OrphanetURL": "http://www.orpha.net/consor/cgi-bin/OC_Exp.php?lng=en&Expert=512",
      "Preferred term": "Metachromatic leukodystrophy",
      "Prevalence": [
        {
          "PrevalenceClass": "1-9 / 100 000",
          "PrevalenceGeographic": "Europe",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "21496291[PMID]_[EXPERT]_European Medicines Agency 2010[OTHER]",
          "ValMoy": "1.47"
        },
        {
          "PrevalenceClass": "1-9 / 1 000 000",
          "PrevalenceGeographic": "Europe",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Point prevalence",
          "PrevalenceValidationStatus": "Validated",
          "Source": "21496291[PMID]_[EXPERT]_European Medicines Agency 2010[OTHER]",
          "ValMoy": "0.1"
        },
        {
          "PrevalenceClass": "1-9 / 100 000",
          "PrevalenceGeographic": "Netherlands",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "10480370[PMID]",
          "ValMoy": "1.42"
        },
        {
          "PrevalenceClass": "1-9 / 100 000",
          "PrevalenceGeographic": "Portugal",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "14685153[PMID]",
          "ValMoy": "1.85"
        },
        {
          "PrevalenceClass": "1-9 / 1 000 000",
          "PrevalenceGeographic": "Germany",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "9286459[PMID]",
          "ValMoy": "0.6"
        },
        {
          "PrevalenceClass": "1-9 / 100 000",
          "PrevalenceGeographic": "Turkey",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "20490927[PMID]",
          "ValMoy": "1.43"
        },
        {
          "PrevalenceClass": "1-9 / 100 000",
          "PrevalenceGeographic": "Australia",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "9918480[PMID]",
          "ValMoy": "1.09"
        },
        {
          "PrevalenceClass": "1-9 / 1 000 000",
          "PrevalenceGeographic": "Czech Republic",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "20490927[PMID]",
          "ValMoy": "0.69"
        },
        {
          "PrevalenceClass": "1-9 / 1 000 000",
          "PrevalenceGeographic": "Poland",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "21695197[PMID]",
          "ValMoy": "0.38"
        },
        {
          "PrevalenceClass": "1-9 / 100 000",
          "PrevalenceGeographic": "Sweden",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "25274184[PMID]",
          "ValMoy": "1.73"
        },
        {
          "PrevalenceClass": "1-9 / 100 000",
          "PrevalenceGeographic": "United States",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "19380076[PMID]",
          "ValMoy": "2.5"
        },
        {
          "PrevalenceClass": "1-9 / 100 000",
          "PrevalenceGeographic": "Worldwide",
          "PrevalenceQualification": "Class only",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "ORPHANET_21695197[PMID]_20490927[PMID]_19380076[PMID]_9918480[PMID]_9286459[PMID]_14685153[PMID]_10480370[PMID]",
          "ValMoy": "0.0"
        }
      ],
      "Typology": "Disease"
    }
  },
  "datasetCategory": {
    "lang": "en",
    "name": "Epidemiology of rare diseases"
  },
  "parameters": {
    "path": {
      "ORPHAcode": 512
    },
    "query": {}
  },
  "uri": "https://api.orphadata.com/rd-epidemiology/orphacodes/512"
}