{
  "id": 17808,
  "label": "polydactyly of a biphalangeal thumb, unilateral",
  "model": {
    "label": "Mondo Disease Ontology (MONDO)",
    "source": 0
  },
  "type_id": 0,
  "reference_id": "MONDO:0017523",
  "properties": {
    "xrefs": [
      "Orphanet:295144"
    ],
    "synonyms": [
      "preaxial polydactyly type 1, unilateral"
    ],
    "categories": [
      {
        "ref": "MONDO:0002081",
        "name": "musculoskeletal system disorder"
      }
    ]
  },
  "isLeaf": true,
  "isRoot": false,
  "child_count": 0,
  "parents": [
    {
      "id": 9576,
      "label": "polydactyly of a biphalangeal thumb",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        17726,
        24804
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "DOID:0060987",
          "GARD:0004417",
          "MEDGEN:237235",
          "MESH:C536332",
          "OMIM:174400",
          "Orphanet:93339",
          "SCTID:445216006",
          "UMLS:C1395852"
        ],
        "synonyms": [
          "PPD1",
          "polydactyly, preaxial type 1",
          "preaxial polydactyly type 1",
          "Fromont anomaly",
          "polydactyly preaxial 1",
          "polydactyly, preaxial 1",
          "polydactyly, preaxial I",
          "preaxial polydactyly 1",
          "thenar hypoplasia",
          "thumb polydactyly"
        ],
        "categories": [
          {
            "ref": "MONDO:0002081",
            "name": "musculoskeletal system disorder"
          }
        ],
        "definition": "Polydactyly of a biphalangeal thumb or PPD1 is the most common form of preaxial polydactyly of fingers, a limb malformation syndrome, that is characterized by the duplication of one or more skeletal components of a biphalangeal thumb. Hands are preferentially affected (in bilateral), and the right hand is more commonly involved than the left."
      },
      "child_count": 4,
      "reference_id": "MONDO:0008269"
    }
  ],
  "children": [],
  "roots": [
    {
      "id": 9576,
      "label": "polydactyly of a biphalangeal thumb"
    }
  ]
}