{
  "url": "https://dantelabs.com/traits/fibular-aplasia",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "fibular-aplasia",
    "id": "HP:0002990",
    "name": "Absent calf bone",
    "label": "Fibular aplasia",
    "definition": "Absence of the fibula.",
    "synonyms": [
      "Absent fibulae",
      "Absent-hypoplastic fibulae"
    ],
    "systems": [
      {
        "slug": "abnormality-of-limbs",
        "name": "Abnormality of limbs",
        "url": "https://dantelabs.com/traits/abnormality-of-limbs"
      },
      {
        "slug": "abnormality-of-the-musculoskeletal-system",
        "name": "Abnormality of the musculoskeletal system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-musculoskeletal-system"
      }
    ],
    "broader": [
      {
        "slug": "aplasia-hypoplasia-of-the-fibula",
        "name": "Absent/small calf bone",
        "url": "https://dantelabs.com/traits/aplasia-hypoplasia-of-the-fibula"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "bmpr1b",
        "symbol": "BMPR1B",
        "hgnc": "HGNC:1077",
        "name": "bone morphogenetic protein receptor type 1B",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/bmpr1b"
      },
      {
        "slug": "flnb",
        "symbol": "FLNB",
        "hgnc": "HGNC:3755",
        "name": "filamin B",
        "frequency": "obligate",
        "diseases": 3,
        "url": "https://dantelabs.com/genes/flnb"
      },
      {
        "slug": "gdf5",
        "symbol": "GDF5",
        "hgnc": "HGNC:4220",
        "name": "growth differentiation factor 5",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gdf5"
      },
      {
        "slug": "lmbr1",
        "symbol": "LMBR1",
        "hgnc": "HGNC:13243",
        "name": "limb development membrane protein 1",
        "frequency": "very-frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/lmbr1"
      },
      {
        "slug": "wnt7a",
        "symbol": "WNT7A",
        "hgnc": "HGNC:12786",
        "name": "Wnt family member 7A",
        "frequency": "very-frequent",
        "diseases": 3,
        "url": "https://dantelabs.com/genes/wnt7a"
      },
      {
        "slug": "flna",
        "symbol": "FLNA",
        "hgnc": "HGNC:3754",
        "name": "filamin A",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/flna"
      },
      {
        "slug": "cplane1",
        "symbol": "CPLANE1",
        "hgnc": "HGNC:25801",
        "name": "ciliogenesis and planar polarity effector complex subunit 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cplane1"
      },
      {
        "slug": "rbm8a",
        "symbol": "RBM8A",
        "hgnc": "HGNC:9905",
        "name": "RNA binding motif protein 8A",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/rbm8a"
      },
      {
        "slug": "amer1",
        "symbol": "AMER1",
        "hgnc": "HGNC:26837",
        "name": "APC membrane recruitment protein 1",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/amer1"
      },
      {
        "slug": "tbx15",
        "symbol": "TBX15",
        "hgnc": "HGNC:11594",
        "name": "T-box transcription factor 15",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tbx15"
      }
    ]
  }
}