{
  "url": "https://dantelabs.com/traits/malar-rash",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "malar-rash",
    "id": "HP:0025300",
    "name": "Malar rash",
    "definition": "An erythematous (red), flat facial rash that affects the skin in the malar area (over the cheekbones) and extends over the bridge of the nose.",
    "synonyms": [
      "Butterfly rash",
      "Cheekbone rash"
    ],
    "systems": [
      {
        "slug": "abnormality-of-the-immune-system",
        "name": "Abnormality of the immune system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-immune-system"
      },
      {
        "slug": "abnormality-of-the-integument",
        "name": "Abnormality of the integument",
        "url": "https://dantelabs.com/traits/abnormality-of-the-integument"
      }
    ],
    "broader": [
      {
        "slug": "skin-rash",
        "name": "Skin rash",
        "url": "https://dantelabs.com/traits/skin-rash"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "blm",
        "symbol": "BLM",
        "hgnc": "HGNC:1058",
        "name": "BLM RecQ like helicase",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/blm"
      },
      {
        "slug": "c1qb",
        "symbol": "C1QB",
        "hgnc": "HGNC:1242",
        "name": "complement C1q B chain",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/c1qb"
      },
      {
        "slug": "pld4",
        "symbol": "PLD4",
        "hgnc": "HGNC:23792",
        "name": "phospholipase D family member 4",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pld4"
      },
      {
        "slug": "bank1",
        "symbol": "BANK1",
        "hgnc": "HGNC:18233",
        "name": "B cell scaffold protein with ankyrin repeats 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/bank1"
      },
      {
        "slug": "blk",
        "symbol": "BLK",
        "hgnc": "HGNC:1057",
        "name": "BLK proto-oncogene, Src family tyrosine kinase",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/blk"
      },
      {
        "slug": "c4a",
        "symbol": "C4A",
        "hgnc": "HGNC:1323",
        "name": "complement C4A (Chido/Rodgers blood group)",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/c4a"
      },
      {
        "slug": "c4b",
        "symbol": "C4B",
        "hgnc": "HGNC:1324",
        "name": "complement C4B (Chido/Rodgers blood group)",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/c4b"
      },
      {
        "slug": "cdk10",
        "symbol": "CDK10",
        "hgnc": "HGNC:1770",
        "name": "cyclin dependent kinase 10",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cdk10"
      },
      {
        "slug": "cr2",
        "symbol": "CR2",
        "hgnc": "HGNC:2336",
        "name": "complement C3d receptor 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cr2"
      },
      {
        "slug": "ctla4",
        "symbol": "CTLA4",
        "hgnc": "HGNC:2505",
        "name": "cytotoxic T-lymphocyte associated protein 4",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ctla4"
      },
      {
        "slug": "dnase1",
        "symbol": "DNASE1",
        "hgnc": "HGNC:2956",
        "name": "deoxyribonuclease 1",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/dnase1"
      },
      {
        "slug": "ets1",
        "symbol": "ETS1",
        "hgnc": "HGNC:3488",
        "name": "ETS proto-oncogene 1, transcription factor",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ets1"
      },
      {
        "slug": "fcgr2a",
        "symbol": "FCGR2A",
        "hgnc": "HGNC:3616",
        "name": "Fc gamma receptor IIa",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fcgr2a"
      },
      {
        "slug": "fcgr2b",
        "symbol": "FCGR2B",
        "hgnc": "HGNC:3618",
        "name": "Fc gamma receptor IIb",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/fcgr2b"
      },
      {
        "slug": "fcgr3b",
        "symbol": "FCGR3B",
        "hgnc": "HGNC:3620",
        "name": "Fc gamma receptor IIIb",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fcgr3b"
      },
      {
        "slug": "hla-drb1",
        "symbol": "HLA-DRB1",
        "hgnc": "HGNC:4948",
        "name": "major histocompatibility complex, class II, DR beta 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/hla-drb1"
      },
      {
        "slug": "ighg1",
        "symbol": "IGHG1",
        "hgnc": "HGNC:5525",
        "name": "immunoglobulin heavy constant gamma 1 (G1m marker)",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ighg1"
      },
      {
        "slug": "il10",
        "symbol": "IL10",
        "hgnc": "HGNC:5962",
        "name": "interleukin 10",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/il10"
      },
      {
        "slug": "irak1",
        "symbol": "IRAK1",
        "hgnc": "HGNC:6112",
        "name": "interleukin 1 receptor associated kinase 1",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/irak1"
      },
      {
        "slug": "irf5",
        "symbol": "IRF5",
        "hgnc": "HGNC:6120",
        "name": "interferon regulatory factor 5",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/irf5"
      },
      {
        "slug": "itgam",
        "symbol": "ITGAM",
        "hgnc": "HGNC:6149",
        "name": "integrin subunit alpha M",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/itgam"
      },
      {
        "slug": "jazf1",
        "symbol": "JAZF1",
        "hgnc": "HGNC:28917",
        "name": "JAZF zinc finger 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/jazf1"
      },
      {
        "slug": "kiaa0319l",
        "symbol": "KIAA0319L",
        "hgnc": "HGNC:30071",
        "name": "KIAA0319 like",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kiaa0319l"
      },
      {
        "slug": "mecp2",
        "symbol": "MECP2",
        "hgnc": "HGNC:6990",
        "name": "methyl-CpG binding protein 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mecp2"
      },
      {
        "slug": "pdcd1",
        "symbol": "PDCD1",
        "hgnc": "HGNC:8760",
        "name": "programmed cell death 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pdcd1"
      },
      {
        "slug": "ptpn22",
        "symbol": "PTPN22",
        "hgnc": "HGNC:9652",
        "name": "protein tyrosine phosphatase non-receptor type 22",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ptpn22"
      },
      {
        "slug": "pxk",
        "symbol": "PXK",
        "hgnc": "HGNC:23326",
        "name": "PX domain containing serine/threonine kinase like",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pxk"
      },
      {
        "slug": "spp1",
        "symbol": "SPP1",
        "hgnc": "HGNC:11255",
        "name": "secreted phosphoprotein 1",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/spp1"
      },
      {
        "slug": "stat4",
        "symbol": "STAT4",
        "hgnc": "HGNC:11365",
        "name": "signal transducer and activator of transcription 4",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/stat4"
      },
      {
        "slug": "sting1",
        "symbol": "STING1",
        "hgnc": "HGNC:27962",
        "name": "stimulator of interferon response cGAMP interactor 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sting1"
      },
      {
        "slug": "tlr7",
        "symbol": "TLR7",
        "hgnc": "HGNC:15631",
        "name": "toll like receptor 7",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/tlr7"
      },
      {
        "slug": "tnfaip3",
        "symbol": "TNFAIP3",
        "hgnc": "HGNC:11896",
        "name": "TNF alpha induced protein 3",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tnfaip3"
      },
      {
        "slug": "tnfsf4",
        "symbol": "TNFSF4",
        "hgnc": "HGNC:11934",
        "name": "TNF superfamily member 4",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tnfsf4"
      },
      {
        "slug": "tnip1",
        "symbol": "TNIP1",
        "hgnc": "HGNC:16903",
        "name": "TNFAIP3 interacting protein 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tnip1"
      },
      {
        "slug": "trex1",
        "symbol": "TREX1",
        "hgnc": "HGNC:12269",
        "name": "three prime repair exonuclease 1",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/trex1"
      },
      {
        "slug": "ube2l3",
        "symbol": "UBE2L3",
        "hgnc": "HGNC:12488",
        "name": "ubiquitin conjugating enzyme E2 L3",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ube2l3"
      },
      {
        "slug": "cbs",
        "symbol": "CBS",
        "hgnc": "HGNC:1550",
        "name": "cystathionine beta-synthase",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cbs"
      },
      {
        "slug": "sat1",
        "symbol": "SAT1",
        "hgnc": "HGNC:10540",
        "name": "spermidine/spermine N1-acetyltransferase 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sat1"
      },
      {
        "slug": "casp10",
        "symbol": "CASP10",
        "hgnc": "HGNC:1500",
        "name": "caspase 10",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/casp10"
      }
    ]
  }
}