{
  "url": "https://dantelabs.com/traits/increased-arm-span",
  "trait": {
    "bundleId": "2026.10.18-e609d43e",
    "release": "2026-09-01",
    "slug": "increased-arm-span",
    "id": "HP:0012771",
    "name": "Increased arm span",
    "definition": "Increased length of the arm span (length from one end of an individual's arms measured at the fingertips to the other when raised parallel to the ground at shoulder height at a one-hundred eighty degree angle).",
    "synonyms": [],
    "systems": [
      {
        "slug": "abnormality-of-limbs",
        "name": "Abnormality of limbs",
        "url": "https://dantelabs.com/traits/abnormality-of-limbs"
      }
    ],
    "broader": [
      {
        "slug": "abnormal-arm-span",
        "name": "Abnormal arm span",
        "url": "https://dantelabs.com/traits/abnormal-arm-span"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "taf4",
        "symbol": "TAF4",
        "hgnc": "HGNC:11537",
        "name": "TATA-box binding protein associated factor 4",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/taf4"
      },
      {
        "slug": "apc2",
        "symbol": "APC2",
        "hgnc": "HGNC:24036",
        "name": "APC regulator of Wnt signaling pathway 2",
        "frequency": "very-frequent",
        "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-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/nsd1"
      },
      {
        "slug": "trappc2",
        "symbol": "TRAPPC2",
        "hgnc": "HGNC:23068",
        "name": "trafficking protein particle complex subunit 2",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/trappc2"
      },
      {
        "slug": "dlg4",
        "symbol": "DLG4",
        "hgnc": "HGNC:2903",
        "name": "discs large MAGUK scaffold protein 4",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dlg4"
      },
      {
        "slug": "emilin1",
        "symbol": "EMILIN1",
        "hgnc": "HGNC:19880",
        "name": "elastin microfibril interfacer 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/emilin1"
      },
      {
        "slug": "fbn1",
        "symbol": "FBN1",
        "hgnc": "HGNC:3603",
        "name": "fibrillin 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fbn1"
      },
      {
        "slug": "tgfb3",
        "symbol": "TGFB3",
        "hgnc": "HGNC:11769",
        "name": "transforming growth factor beta 3",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tgfb3"
      }
    ]
  }
}