{
  "url": "https://dantelabs.com/traits/blepharochalasis",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "blepharochalasis",
    "id": "HP:0010749",
    "name": "Blepharochalasis",
    "definition": "Blepharochalasis is characterized by recurrent, non-painful, nonerythematous episodes of eyelid edema. It has been divided into hypertrophic and atrophic forms. In the hypertrophic form recurrent edema results in orbital fat herniation through a weakened orbital septum. Most patients who have blepharochalasis present in an atrophic condition with atrophy of redundant eyelid skin and superior nasal fat pads.",
    "synonyms": [
      "Saggy upper eyelid skin"
    ],
    "systems": [
      {
        "slug": "abnormality-of-head-or-neck",
        "name": "Abnormality of head or neck",
        "url": "https://dantelabs.com/traits/abnormality-of-head-or-neck"
      },
      {
        "slug": "abnormality-of-metabolism-homeostasis",
        "name": "Laboratory abnormality",
        "url": "https://dantelabs.com/traits/abnormality-of-metabolism-homeostasis"
      }
    ],
    "broader": [
      {
        "slug": "palpebral-edema",
        "name": "Fullness of eyelids",
        "url": "https://dantelabs.com/traits/palpebral-edema"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "efemp1",
        "symbol": "EFEMP1",
        "hgnc": "HGNC:3218",
        "name": "EGF-like fibulin extracellular matrix protein 1",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/efemp1"
      },
      {
        "slug": "cdh11",
        "symbol": "CDH11",
        "hgnc": "HGNC:1750",
        "name": "cadherin 11",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cdh11"
      },
      {
        "slug": "adamts2",
        "symbol": "ADAMTS2",
        "hgnc": "HGNC:218",
        "name": "ADAM metallopeptidase with thrombospondin type 1 motif 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/adamts2"
      },
      {
        "slug": "col1a1",
        "symbol": "COL1A1",
        "hgnc": "HGNC:2197",
        "name": "collagen type I alpha 1 chain",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/col1a1"
      },
      {
        "slug": "col5a1",
        "symbol": "COL5A1",
        "hgnc": "HGNC:2209",
        "name": "collagen type V alpha 1 chain",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/col5a1"
      },
      {
        "slug": "col5a2",
        "symbol": "COL5A2",
        "hgnc": "HGNC:2210",
        "name": "collagen type V alpha 2 chain",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/col5a2"
      },
      {
        "slug": "fbxo11",
        "symbol": "FBXO11",
        "hgnc": "HGNC:13590",
        "name": "F-box protein 11",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fbxo11"
      },
      {
        "slug": "gsn",
        "symbol": "GSN",
        "hgnc": "HGNC:4620",
        "name": "gelsolin",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gsn"
      }
    ]
  }
}