{
  "url": "https://dantelabs.com/traits/pulmonary-bleb",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "pulmonary-bleb",
    "id": "HP:0032447",
    "name": "Pulmonary bleb",
    "definition": "A bleb is a small gas-containing space within the visceral pleura or in the subpleural lung, not larger than 1 cm in diameter. CT findings show a bleb as a thin-walled cystic air space contiguous with the pleura.",
    "synonyms": [],
    "systems": [
      {
        "slug": "abnormality-of-the-respiratory-system",
        "name": "Abnormality of the respiratory system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-respiratory-system"
      }
    ],
    "broader": [
      {
        "slug": "emphysema",
        "name": "Emphysema",
        "url": "https://dantelabs.com/traits/emphysema"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "col3a1",
        "symbol": "COL3A1",
        "hgnc": "HGNC:2201",
        "name": "collagen type III alpha 1 chain",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/col3a1"
      },
      {
        "slug": "apc2",
        "symbol": "APC2",
        "hgnc": "HGNC:24036",
        "name": "APC regulator of Wnt signaling pathway 2",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/apc2"
      },
      {
        "slug": "nsd1",
        "symbol": "NSD1",
        "hgnc": "HGNC:14234",
        "name": "nuclear receptor binding SET domain protein 1",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/nsd1"
      }
    ]
  }
}