{
  "url": "https://dantelabs.com/traits/fibular-hypoplasia",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "fibular-hypoplasia",
    "id": "HP:0003038",
    "name": "Short calf bone",
    "label": "Fibular hypoplasia",
    "definition": "Underdevelopment of the fibula.",
    "synonyms": [
      "Hypoplastic fibula",
      "Short fibula",
      "Short 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"
      },
      {
        "slug": "short-long-bone",
        "name": "Short long bone",
        "url": "https://dantelabs.com/traits/short-long-bone"
      }
    ],
    "narrower": [
      {
        "slug": "hypoplasia-of-proximal-fibula",
        "name": "Small innermost upper end of calf bone",
        "genes": 2,
        "url": "https://dantelabs.com/traits/hypoplasia-of-proximal-fibula"
      },
      {
        "slug": "rudimentary-fibula",
        "name": "Small to absent calf bone",
        "genes": 2,
        "url": "https://dantelabs.com/traits/rudimentary-fibula"
      }
    ],
    "genes": [
      {
        "slug": "gdf5",
        "symbol": "GDF5",
        "hgnc": "HGNC:4220",
        "name": "growth differentiation factor 5",
        "frequency": "obligate",
        "diseases": 4,
        "url": "https://dantelabs.com/genes/gdf5"
      },
      {
        "slug": "ift140",
        "symbol": "IFT140",
        "hgnc": "HGNC:29077",
        "name": "intraflagellar transport 140",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ift140"
      },
      {
        "slug": "intu",
        "symbol": "INTU",
        "hgnc": "HGNC:29239",
        "name": "inturned planar cell polarity protein",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/intu"
      },
      {
        "slug": "eif4a3",
        "symbol": "EIF4A3",
        "hgnc": "HGNC:18683",
        "name": "eukaryotic translation initiation factor 4A3",
        "frequency": "very-frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/eif4a3"
      },
      {
        "slug": "inppl1",
        "symbol": "INPPL1",
        "hgnc": "HGNC:6080",
        "name": "inositol polyphosphate phosphatase like 1",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/inppl1"
      },
      {
        "slug": "slc35d1",
        "symbol": "SLC35D1",
        "hgnc": "HGNC:20800",
        "name": "solute carrier family 35 member D1",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/slc35d1"
      },
      {
        "slug": "sox9",
        "symbol": "SOX9",
        "hgnc": "HGNC:11204",
        "name": "SRY-box transcription factor 9",
        "frequency": "very-frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/sox9"
      },
      {
        "slug": "aff3",
        "symbol": "AFF3",
        "hgnc": "HGNC:6473",
        "name": "ALF transcription elongation factor 3",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/aff3"
      },
      {
        "slug": "bmpr1b",
        "symbol": "BMPR1B",
        "hgnc": "HGNC:1077",
        "name": "bone morphogenetic protein receptor type 1B",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/bmpr1b"
      },
      {
        "slug": "cep120",
        "symbol": "CEP120",
        "hgnc": "HGNC:26690",
        "name": "centrosomal protein 120",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cep120"
      },
      {
        "slug": "fzd2",
        "symbol": "FZD2",
        "hgnc": "HGNC:4040",
        "name": "frizzled class receptor 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fzd2"
      },
      {
        "slug": "pth1r",
        "symbol": "PTH1R",
        "hgnc": "HGNC:9608",
        "name": "parathyroid hormone 1 receptor",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/pth1r"
      },
      {
        "slug": "sf3b4",
        "symbol": "SF3B4",
        "hgnc": "HGNC:10771",
        "name": "splicing factor 3b subunit 4",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sf3b4"
      },
      {
        "slug": "smoc1",
        "symbol": "SMOC1",
        "hgnc": "HGNC:20318",
        "name": "SPARC related modular calcium binding 1",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/smoc1"
      },
      {
        "slug": "aff4",
        "symbol": "AFF4",
        "hgnc": "HGNC:17869",
        "name": "ALF transcription elongation factor 4",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/aff4"
      },
      {
        "slug": "bhlha9",
        "symbol": "BHLHA9",
        "hgnc": "HGNC:35126",
        "name": "basic helix-loop-helix family member a9",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/bhlha9"
      },
      {
        "slug": "dync2h1",
        "symbol": "DYNC2H1",
        "hgnc": "HGNC:2962",
        "name": "dynein cytoplasmic 2 heavy chain 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dync2h1"
      },
      {
        "slug": "met",
        "symbol": "MET",
        "hgnc": "HGNC:7029",
        "name": "MET proto-oncogene, receptor tyrosine kinase",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/met"
      },
      {
        "slug": "amer1",
        "symbol": "AMER1",
        "hgnc": "HGNC:26837",
        "name": "APC membrane recruitment protein 1",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/amer1"
      },
      {
        "slug": "col11a1",
        "symbol": "COL11A1",
        "hgnc": "HGNC:2186",
        "name": "collagen type XI alpha 1 chain",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/col11a1"
      },
      {
        "slug": "gpc6",
        "symbol": "GPC6",
        "hgnc": "HGNC:4454",
        "name": "glypican 6",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gpc6"
      },
      {
        "slug": "ift122",
        "symbol": "IFT122",
        "hgnc": "HGNC:13556",
        "name": "intraflagellar transport 122",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ift122"
      },
      {
        "slug": "shox",
        "symbol": "SHOX",
        "hgnc": "HGNC:10853",
        "name": "SHOX homeobox",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/shox"
      }
    ]
  }
}