{
  "url": "https://dantelabs.com/traits/breast-hypertrophy",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "breast-hypertrophy",
    "id": "HP:0010313",
    "name": "Breast hypertrophy",
    "definition": "The presence of hypertrophy of the breast.",
    "synonyms": [
      "Breast enlargement",
      "Breasts enlarged",
      "Gigantomastia",
      "Hypertrophy of the breasts",
      "Large breast",
      "Macromastia"
    ],
    "systems": [
      {
        "slug": "abnormality-of-the-breast",
        "name": "Abnormality of the breast",
        "url": "https://dantelabs.com/traits/abnormality-of-the-breast"
      }
    ],
    "broader": [
      {
        "slug": "abnormal-breast-morphology",
        "name": "Abnormal breast morphology",
        "url": "https://dantelabs.com/traits/abnormal-breast-morphology"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "cyp19a1",
        "symbol": "CYP19A1",
        "hgnc": "HGNC:2594",
        "name": "cytochrome P450 family 19 subfamily A member 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cyp19a1"
      }
    ]
  }
}