{
  "url": "https://dantelabs.com/traits/biparietal-narrowing",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "biparietal-narrowing",
    "id": "HP:0004422",
    "name": "Decreased width of the skull",
    "label": "Biparietal narrowing",
    "definition": "A narrowing of the biparietal diameter (i.e., of the transverse distance between the protuberances of the two parietal bones of the skull).",
    "synonyms": [],
    "systems": [
      {
        "slug": "abnormality-of-head-or-neck",
        "name": "Abnormality of head or neck",
        "url": "https://dantelabs.com/traits/abnormality-of-head-or-neck"
      },
      {
        "slug": "abnormality-of-the-musculoskeletal-system",
        "name": "Abnormality of the musculoskeletal system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-musculoskeletal-system"
      }
    ],
    "broader": [
      {
        "slug": "abnormal-calvaria-morphology",
        "name": "Abnormality of cranium",
        "url": "https://dantelabs.com/traits/abnormal-calvaria-morphology"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "cd96",
        "symbol": "CD96",
        "hgnc": "HGNC:16892",
        "name": "CD96 molecule",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cd96"
      },
      {
        "slug": "hras",
        "symbol": "HRAS",
        "hgnc": "HGNC:5173",
        "name": "HRas proto-oncogene, GTPase",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/hras"
      },
      {
        "slug": "kras",
        "symbol": "KRAS",
        "hgnc": "HGNC:6407",
        "name": "KRas proto-oncogene, GTPase",
        "frequency": "very-frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/kras"
      },
      {
        "slug": "nras",
        "symbol": "NRAS",
        "hgnc": "HGNC:7989",
        "name": "NRAS proto-oncogene, GTPase",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/nras"
      },
      {
        "slug": "ppp2r3c",
        "symbol": "PPP2R3C",
        "hgnc": "HGNC:17485",
        "name": "protein phosphatase 2 regulatory subunit B''gamma",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ppp2r3c"
      },
      {
        "slug": "znhit3",
        "symbol": "ZNHIT3",
        "hgnc": "HGNC:12309",
        "name": "zinc finger HIT-type containing 3",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/znhit3"
      },
      {
        "slug": "ahi1",
        "symbol": "AHI1",
        "hgnc": "HGNC:21575",
        "name": "Abelson helper integration site 1",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/ahi1"
      },
      {
        "slug": "arl13b",
        "symbol": "ARL13B",
        "hgnc": "HGNC:25419",
        "name": "ARF like GTPase 13B",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/arl13b"
      },
      {
        "slug": "arl3",
        "symbol": "ARL3",
        "hgnc": "HGNC:694",
        "name": "ARF like GTPase 3",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/arl3"
      },
      {
        "slug": "armc9",
        "symbol": "ARMC9",
        "hgnc": "HGNC:20730",
        "name": "armadillo repeat containing 9",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/armc9"
      },
      {
        "slug": "b9d1",
        "symbol": "B9D1",
        "hgnc": "HGNC:24123",
        "name": "B9 domain containing 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/b9d1"
      },
      {
        "slug": "b9d2",
        "symbol": "B9D2",
        "hgnc": "HGNC:28636",
        "name": "B9 domain containing 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/b9d2"
      },
      {
        "slug": "braf",
        "symbol": "BRAF",
        "hgnc": "HGNC:1097",
        "name": "B-Raf proto-oncogene, serine/threonine kinase",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/braf"
      },
      {
        "slug": "cby1",
        "symbol": "CBY1",
        "hgnc": "HGNC:1307",
        "name": "chibby 1, beta catenin antagonist",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cby1"
      },
      {
        "slug": "cc2d2a",
        "symbol": "CC2D2A",
        "hgnc": "HGNC:29253",
        "name": "coiled-coil and C2 domain containing 2A",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/cc2d2a"
      },
      {
        "slug": "cep104",
        "symbol": "CEP104",
        "hgnc": "HGNC:24866",
        "name": "centrosomal protein 104",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cep104"
      },
      {
        "slug": "cep120",
        "symbol": "CEP120",
        "hgnc": "HGNC:26690",
        "name": "centrosomal protein 120",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/cep120"
      },
      {
        "slug": "cep290",
        "symbol": "CEP290",
        "hgnc": "HGNC:29021",
        "name": "centrosomal protein 290",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cep290"
      },
      {
        "slug": "cep41",
        "symbol": "CEP41",
        "hgnc": "HGNC:12370",
        "name": "centrosomal protein 41",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/cep41"
      },
      {
        "slug": "cplane1",
        "symbol": "CPLANE1",
        "hgnc": "HGNC:25801",
        "name": "ciliogenesis and planar polarity effector complex subunit 1",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/cplane1"
      },
      {
        "slug": "cspp1",
        "symbol": "CSPP1",
        "hgnc": "HGNC:26193",
        "name": "centrosome and spindle pole associated protein 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cspp1"
      },
      {
        "slug": "dhcr7",
        "symbol": "DHCR7",
        "hgnc": "HGNC:2860",
        "name": "7-dehydrocholesterol reductase",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dhcr7"
      },
      {
        "slug": "fam149b1",
        "symbol": "FAM149B1",
        "hgnc": "HGNC:29162",
        "name": "family with sequence similarity 149 member B1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fam149b1"
      },
      {
        "slug": "gata4",
        "symbol": "GATA4",
        "hgnc": "HGNC:4173",
        "name": "GATA binding protein 4",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gata4"
      },
      {
        "slug": "hyls1",
        "symbol": "HYLS1",
        "hgnc": "HGNC:26558",
        "name": "HYLS1 centriolar and ciliogenesis associated",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/hyls1"
      },
      {
        "slug": "ift74",
        "symbol": "IFT74",
        "hgnc": "HGNC:21424",
        "name": "intraflagellar transport 74",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ift74"
      },
      {
        "slug": "inpp5e",
        "symbol": "INPP5E",
        "hgnc": "HGNC:21474",
        "name": "inositol polyphosphate-5-phosphatase E",
        "frequency": "frequent",
        "diseases": 3,
        "url": "https://dantelabs.com/genes/inpp5e"
      },
      {
        "slug": "katnip",
        "symbol": "KATNIP",
        "hgnc": "HGNC:29068",
        "name": "katanin interacting protein",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/katnip"
      },
      {
        "slug": "kiaa0586",
        "symbol": "KIAA0586",
        "hgnc": "HGNC:19960",
        "name": "KIAA0586",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kiaa0586"
      },
      {
        "slug": "kiaa0753",
        "symbol": "KIAA0753",
        "hgnc": "HGNC:29110",
        "name": "KIAA0753",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/kiaa0753"
      },
      {
        "slug": "kif7",
        "symbol": "KIF7",
        "hgnc": "HGNC:30497",
        "name": "kinesin family member 7",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kif7"
      },
      {
        "slug": "lig4",
        "symbol": "LIG4",
        "hgnc": "HGNC:6601",
        "name": "DNA ligase 4",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/lig4"
      },
      {
        "slug": "map2k1",
        "symbol": "MAP2K1",
        "hgnc": "HGNC:6840",
        "name": "mitogen-activated protein kinase kinase 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/map2k1"
      },
      {
        "slug": "map2k2",
        "symbol": "MAP2K2",
        "hgnc": "HGNC:6842",
        "name": "mitogen-activated protein kinase kinase 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/map2k2"
      },
      {
        "slug": "meis2",
        "symbol": "MEIS2",
        "hgnc": "HGNC:7001",
        "name": "Meis homeobox 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/meis2"
      },
      {
        "slug": "mks1",
        "symbol": "MKS1",
        "hgnc": "HGNC:7121",
        "name": "MKS transition zone complex subunit 1",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/mks1"
      },
      {
        "slug": "nphp1",
        "symbol": "NPHP1",
        "hgnc": "HGNC:7905",
        "name": "nephrocystin 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/nphp1"
      },
      {
        "slug": "ofd1",
        "symbol": "OFD1",
        "hgnc": "HGNC:2567",
        "name": "OFD1 centriole and centriolar satellite protein",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/ofd1"
      },
      {
        "slug": "pde6d",
        "symbol": "PDE6D",
        "hgnc": "HGNC:8788",
        "name": "phosphodiesterase 6D",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/pde6d"
      },
      {
        "slug": "pibf1",
        "symbol": "PIBF1",
        "hgnc": "HGNC:23352",
        "name": "progesterone immunomodulatory binding factor 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pibf1"
      },
      {
        "slug": "plk4",
        "symbol": "PLK4",
        "hgnc": "HGNC:11397",
        "name": "polo like kinase 4",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/plk4"
      },
      {
        "slug": "rpgrip1l",
        "symbol": "RPGRIP1L",
        "hgnc": "HGNC:29168",
        "name": "RPGRIP1 like",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/rpgrip1l"
      },
      {
        "slug": "sc5d",
        "symbol": "SC5D",
        "hgnc": "HGNC:10547",
        "name": "sterol-C5-desaturase",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sc5d"
      },
      {
        "slug": "sufu",
        "symbol": "SUFU",
        "hgnc": "HGNC:16466",
        "name": "SUFU negative regulator of hedgehog signaling",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sufu"
      },
      {
        "slug": "tctn1",
        "symbol": "TCTN1",
        "hgnc": "HGNC:26113",
        "name": "tectonic family member 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tctn1"
      },
      {
        "slug": "tctn2",
        "symbol": "TCTN2",
        "hgnc": "HGNC:25774",
        "name": "tectonic family member 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tctn2"
      },
      {
        "slug": "tctn3",
        "symbol": "TCTN3",
        "hgnc": "HGNC:24519",
        "name": "tectonic family member 3",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/tctn3"
      },
      {
        "slug": "tmem138",
        "symbol": "TMEM138",
        "hgnc": "HGNC:26944",
        "name": "transmembrane protein 138",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tmem138"
      },
      {
        "slug": "tmem216",
        "symbol": "TMEM216",
        "hgnc": "HGNC:25018",
        "name": "transmembrane protein 216",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/tmem216"
      },
      {
        "slug": "tmem218",
        "symbol": "TMEM218",
        "hgnc": "HGNC:27344",
        "name": "transmembrane protein 218",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tmem218"
      },
      {
        "slug": "tmem231",
        "symbol": "TMEM231",
        "hgnc": "HGNC:37234",
        "name": "transmembrane protein 231",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/tmem231"
      },
      {
        "slug": "tmem237",
        "symbol": "TMEM237",
        "hgnc": "HGNC:14432",
        "name": "transmembrane protein 237",
        "frequency": "frequent",
        "diseases": 3,
        "url": "https://dantelabs.com/genes/tmem237"
      },
      {
        "slug": "tmem67",
        "symbol": "TMEM67",
        "hgnc": "HGNC:28396",
        "name": "transmembrane protein 67",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/tmem67"
      },
      {
        "slug": "togaram1",
        "symbol": "TOGARAM1",
        "hgnc": "HGNC:19959",
        "name": "TOG array regulator of axonemal microtubules 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/togaram1"
      },
      {
        "slug": "topors",
        "symbol": "TOPORS",
        "hgnc": "HGNC:21653",
        "name": "TOP1 binding arginine/serine rich protein, E3 ubiquitin ligase",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/topors"
      },
      {
        "slug": "tubgcp4",
        "symbol": "TUBGCP4",
        "hgnc": "HGNC:16691",
        "name": "tubulin gamma complex component 4",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tubgcp4"
      },
      {
        "slug": "tubgcp6",
        "symbol": "TUBGCP6",
        "hgnc": "HGNC:18127",
        "name": "tubulin gamma complex component 6",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tubgcp6"
      },
      {
        "slug": "twist1",
        "symbol": "TWIST1",
        "hgnc": "HGNC:12428",
        "name": "twist family bHLH transcription factor 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/twist1"
      },
      {
        "slug": "znf423",
        "symbol": "ZNF423",
        "hgnc": "HGNC:16762",
        "name": "zinc finger protein 423",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/znf423"
      },
      {
        "slug": "ankrd11",
        "symbol": "ANKRD11",
        "hgnc": "HGNC:21316",
        "name": "ankyrin repeat domain 11",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ankrd11"
      },
      {
        "slug": "cul4b",
        "symbol": "CUL4B",
        "hgnc": "HGNC:2555",
        "name": "cullin 4B",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cul4b"
      },
      {
        "slug": "hnrnpu",
        "symbol": "HNRNPU",
        "hgnc": "HGNC:5048",
        "name": "heterogeneous nuclear ribonucleoprotein U",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/hnrnpu"
      },
      {
        "slug": "mcoln1",
        "symbol": "MCOLN1",
        "hgnc": "HGNC:13356",
        "name": "mucolipin TRP cation channel 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mcoln1"
      },
      {
        "slug": "pten",
        "symbol": "PTEN",
        "hgnc": "HGNC:9588",
        "name": "phosphatase and tensin homolog",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pten"
      }
    ]
  }
}