{
  "url": "https://dantelabs.com/traits/diffuse-alveolar-hemorrhage",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "diffuse-alveolar-hemorrhage",
    "id": "HP:0025420",
    "name": "Diffuse alveolar hemorrhage",
    "definition": "A type of of pulmonary hemorrhage that originates from the pulmonary microcirculation, including the alveolar capillaries, arterioles, and venules. It presents with hemoptysis, anemia, diffuse lung infiltration, and acute respiratory failure. The diagnosis is confirmed by the observation of the accumulation of red blood cells, fibrin, or hemosiderin-laden macrophage in the alveolar space on pathologic biopsy. Hemosiderin, a product of hemoglobin degradation, appears at least 48-72 hours after bleeding and is helpful in distinguishing diffuse alveolar hemorrhage from surgical trauma. Mild interstitial thickening, organizing pneumonia, or diffuse alveolar damage can also be seen.",
    "synonyms": [
      "Diffuse alveolar haemorrhage"
    ],
    "systems": [
      {
        "slug": "abnormality-of-blood-and-blood-forming-tissues",
        "name": "Abnormality of blood and blood-forming tissues",
        "url": "https://dantelabs.com/traits/abnormality-of-blood-and-blood-forming-tissues"
      },
      {
        "slug": "abnormality-of-the-cardiovascular-system",
        "name": "Abnormality of the cardiovascular system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-cardiovascular-system"
      },
      {
        "slug": "abnormality-of-the-respiratory-system",
        "name": "Abnormality of the respiratory system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-respiratory-system"
      }
    ],
    "broader": [
      {
        "slug": "pulmonary-hemorrhage",
        "name": "Pulmonary hemorrhage",
        "url": "https://dantelabs.com/traits/pulmonary-hemorrhage"
      }
    ],
    "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": "hmox1",
        "symbol": "HMOX1",
        "hgnc": "HGNC:5013",
        "name": "heme oxygenase 1",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/hmox1"
      },
      {
        "slug": "pdcd1",
        "symbol": "PDCD1",
        "hgnc": "HGNC:8760",
        "name": "programmed cell death 1",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pdcd1"
      },
      {
        "slug": "eif2ak4",
        "symbol": "EIF2AK4",
        "hgnc": "HGNC:19687",
        "name": "eukaryotic translation initiation factor 2 alpha kinase 4",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/eif2ak4"
      },
      {
        "slug": "nlrc4",
        "symbol": "NLRC4",
        "hgnc": "HGNC:16412",
        "name": "NLR family CARD domain containing 4",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/nlrc4"
      },
      {
        "slug": "bcor",
        "symbol": "BCOR",
        "hgnc": "HGNC:20893",
        "name": "BCL6 corepressor",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/bcor"
      },
      {
        "slug": "ctla4",
        "symbol": "CTLA4",
        "hgnc": "HGNC:2505",
        "name": "cytotoxic T-lymphocyte associated protein 4",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ctla4"
      },
      {
        "slug": "fip1l1",
        "symbol": "FIP1L1",
        "hgnc": "HGNC:19124",
        "name": "factor interacting with PAPOLA and CPSF1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fip1l1"
      },
      {
        "slug": "hla-dpa1",
        "symbol": "HLA-DPA1",
        "hgnc": "HGNC:4938",
        "name": "major histocompatibility complex, class II, DP alpha 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/hla-dpa1"
      },
      {
        "slug": "hla-dpb1",
        "symbol": "HLA-DPB1",
        "hgnc": "HGNC:4940",
        "name": "major histocompatibility complex, class II, DP beta 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/hla-dpb1"
      },
      {
        "slug": "irf2bp2",
        "symbol": "IRF2BP2",
        "hgnc": "HGNC:21729",
        "name": "interferon regulatory factor 2 binding protein 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/irf2bp2"
      },
      {
        "slug": "nabp1",
        "symbol": "NABP1",
        "hgnc": "HGNC:26232",
        "name": "nucleic acid binding protein 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/nabp1"
      },
      {
        "slug": "npm1",
        "symbol": "NPM1",
        "hgnc": "HGNC:7910",
        "name": "nucleophosmin 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/npm1"
      },
      {
        "slug": "numa1",
        "symbol": "NUMA1",
        "hgnc": "HGNC:8059",
        "name": "nuclear mitotic apparatus protein 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/numa1"
      },
      {
        "slug": "pml",
        "symbol": "PML",
        "hgnc": "HGNC:9113",
        "name": "PML nuclear body scaffold",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pml"
      },
      {
        "slug": "prkar1a",
        "symbol": "PRKAR1A",
        "hgnc": "HGNC:9388",
        "name": "protein kinase cAMP-dependent type I regulatory subunit alpha",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/prkar1a"
      },
      {
        "slug": "prtn3",
        "symbol": "PRTN3",
        "hgnc": "HGNC:9495",
        "name": "proteinase 3",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/prtn3"
      },
      {
        "slug": "ptpn22",
        "symbol": "PTPN22",
        "hgnc": "HGNC:9652",
        "name": "protein tyrosine phosphatase non-receptor type 22",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ptpn22"
      },
      {
        "slug": "rara",
        "symbol": "RARA",
        "hgnc": "HGNC:9864",
        "name": "retinoic acid receptor alpha",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rara"
      },
      {
        "slug": "stat3",
        "symbol": "STAT3",
        "hgnc": "HGNC:11364",
        "name": "signal transducer and activator of transcription 3",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/stat3"
      },
      {
        "slug": "stat5b",
        "symbol": "STAT5B",
        "hgnc": "HGNC:11367",
        "name": "signal transducer and activator of transcription 5B",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/stat5b"
      },
      {
        "slug": "tbl1xr1",
        "symbol": "TBL1XR1",
        "hgnc": "HGNC:29529",
        "name": "TBL1X/Y related 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tbl1xr1"
      },
      {
        "slug": "zbtb16",
        "symbol": "ZBTB16",
        "hgnc": "HGNC:12930",
        "name": "zinc finger and BTB domain containing 16",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/zbtb16"
      }
    ]
  }
}