{
  "url": "https://dantelabs.com/traits/ascending-aortic-dissection",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "ascending-aortic-dissection",
    "id": "HP:0004933",
    "name": "Ascending aortic dissection",
    "definition": "A separation of the layers within the wall of the ascending aorta. Tears in the intimal layer result in the propagation of dissection (proximally or distally) secondary to blood entering the intima-media space.",
    "synonyms": [
      "Type A aortic dissection"
    ],
    "systems": [
      {
        "slug": "abnormality-of-the-cardiovascular-system",
        "name": "Abnormality of the cardiovascular system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-cardiovascular-system"
      }
    ],
    "broader": [
      {
        "slug": "abnormal-ascending-aorta-morphology",
        "name": "Abnormal ascending aorta morphology",
        "url": "https://dantelabs.com/traits/abnormal-ascending-aorta-morphology"
      },
      {
        "slug": "aortic-dissection",
        "name": "Tear in inner wall of large artery that carries blood away from heart",
        "url": "https://dantelabs.com/traits/aortic-dissection"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "col3a1",
        "symbol": "COL3A1",
        "hgnc": "HGNC:2201",
        "name": "collagen type III alpha 1 chain",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/col3a1"
      },
      {
        "slug": "fbn1",
        "symbol": "FBN1",
        "hgnc": "HGNC:3603",
        "name": "fibrillin 1",
        "frequency": "obligate",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/fbn1"
      },
      {
        "slug": "acta2",
        "symbol": "ACTA2",
        "hgnc": "HGNC:130",
        "name": "actin alpha 2, smooth muscle",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/acta2"
      },
      {
        "slug": "efemp2",
        "symbol": "EFEMP2",
        "hgnc": "HGNC:3219",
        "name": "EGF-like fibulin extracellular matrix protein 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/efemp2"
      },
      {
        "slug": "eln",
        "symbol": "ELN",
        "hgnc": "HGNC:3327",
        "name": "elastin",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/eln"
      },
      {
        "slug": "emilin1",
        "symbol": "EMILIN1",
        "hgnc": "HGNC:19880",
        "name": "elastin microfibril interfacer 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/emilin1"
      },
      {
        "slug": "foxe3",
        "symbol": "FOXE3",
        "hgnc": "HGNC:3808",
        "name": "forkhead box E3",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/foxe3"
      },
      {
        "slug": "hey2",
        "symbol": "HEY2",
        "hgnc": "HGNC:4881",
        "name": "hes related family bHLH transcription factor with YRPW motif 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/hey2"
      },
      {
        "slug": "lox",
        "symbol": "LOX",
        "hgnc": "HGNC:6664",
        "name": "lysyl oxidase",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/lox"
      },
      {
        "slug": "mat2a",
        "symbol": "MAT2A",
        "hgnc": "HGNC:6904",
        "name": "methionine adenosyltransferase 2A",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mat2a"
      },
      {
        "slug": "mfap5",
        "symbol": "MFAP5",
        "hgnc": "HGNC:29673",
        "name": "microfibril associated protein 5",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/mfap5"
      },
      {
        "slug": "myh11",
        "symbol": "MYH11",
        "hgnc": "HGNC:7569",
        "name": "myosin heavy chain 11",
        "frequency": "frequent",
        "diseases": 3,
        "url": "https://dantelabs.com/genes/myh11"
      },
      {
        "slug": "mylk",
        "symbol": "MYLK",
        "hgnc": "HGNC:7590",
        "name": "myosin light chain kinase",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/mylk"
      },
      {
        "slug": "prkg1",
        "symbol": "PRKG1",
        "hgnc": "HGNC:9414",
        "name": "protein kinase cGMP-dependent 1",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/prkg1"
      },
      {
        "slug": "smad2",
        "symbol": "SMAD2",
        "hgnc": "HGNC:6768",
        "name": "SMAD family member 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/smad2"
      },
      {
        "slug": "smad3",
        "symbol": "SMAD3",
        "hgnc": "HGNC:6769",
        "name": "SMAD family member 3",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/smad3"
      },
      {
        "slug": "smad4",
        "symbol": "SMAD4",
        "hgnc": "HGNC:6770",
        "name": "SMAD family member 4",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/smad4"
      },
      {
        "slug": "tgfb2",
        "symbol": "TGFB2",
        "hgnc": "HGNC:11768",
        "name": "transforming growth factor beta 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tgfb2"
      },
      {
        "slug": "tgfb3",
        "symbol": "TGFB3",
        "hgnc": "HGNC:11769",
        "name": "transforming growth factor beta 3",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/tgfb3"
      },
      {
        "slug": "tgfbr1",
        "symbol": "TGFBR1",
        "hgnc": "HGNC:11772",
        "name": "transforming growth factor beta receptor 1",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/tgfbr1"
      },
      {
        "slug": "tgfbr2",
        "symbol": "TGFBR2",
        "hgnc": "HGNC:11773",
        "name": "transforming growth factor beta receptor 2",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/tgfbr2"
      },
      {
        "slug": "thsd4",
        "symbol": "THSD4",
        "hgnc": "HGNC:25835",
        "name": "thrombospondin type 1 domain containing 4",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/thsd4"
      },
      {
        "slug": "robo4",
        "symbol": "ROBO4",
        "hgnc": "HGNC:17985",
        "name": "roundabout guidance receptor 4",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/robo4"
      },
      {
        "slug": "smad6",
        "symbol": "SMAD6",
        "hgnc": "HGNC:6772",
        "name": "SMAD family member 6",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/smad6"
      },
      {
        "slug": "gata5",
        "symbol": "GATA5",
        "hgnc": "HGNC:15802",
        "name": "GATA binding protein 5",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gata5"
      },
      {
        "slug": "nkx2-5",
        "symbol": "NKX2-5",
        "hgnc": "HGNC:2488",
        "name": "NK2 homeobox 5",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/nkx2-5"
      },
      {
        "slug": "notch1",
        "symbol": "NOTCH1",
        "hgnc": "HGNC:7881",
        "name": "notch receptor 1",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/notch1"
      }
    ]
  }
}