{
  "url": "https://dantelabs.com/traits/expressive-language-delay",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "expressive-language-delay",
    "id": "HP:0002474",
    "name": "Communication delay",
    "label": "Expressive language delay",
    "definition": "A delay in the acquisition of the ability to use language to communicate needs, wishes, or thoughts.",
    "synonyms": [
      "Deficit in expressive language"
    ],
    "systems": [
      {
        "slug": "abnormality-of-the-nervous-system",
        "name": "Abnormality of the nervous system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-nervous-system"
      }
    ],
    "broader": [
      {
        "slug": "delayed-speech-and-language-development",
        "name": "Delayed speech and language development",
        "url": "https://dantelabs.com/traits/delayed-speech-and-language-development"
      }
    ],
    "narrower": [
      {
        "slug": "severe-expressive-language-delay",
        "name": "Severe expressive language delay",
        "genes": 12,
        "url": "https://dantelabs.com/traits/severe-expressive-language-delay"
      },
      {
        "slug": "mild-expressive-language-delay",
        "name": "Mild expressive language delay",
        "genes": 1,
        "url": "https://dantelabs.com/traits/mild-expressive-language-delay"
      }
    ],
    "genes": [
      {
        "slug": "atxn7l3",
        "symbol": "ATXN7L3",
        "hgnc": "HGNC:25416",
        "name": "ataxin 7 like 3",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/atxn7l3"
      },
      {
        "slug": "dnm1l",
        "symbol": "DNM1L",
        "hgnc": "HGNC:2973",
        "name": "dynamin 1L",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dnm1l"
      },
      {
        "slug": "mau2",
        "symbol": "MAU2",
        "hgnc": "HGNC:29140",
        "name": "MAU2 sister chromatid cohesion factor",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mau2"
      },
      {
        "slug": "med23",
        "symbol": "MED23",
        "hgnc": "HGNC:2372",
        "name": "mediator complex subunit 23",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/med23"
      },
      {
        "slug": "rap1gds1",
        "symbol": "RAP1GDS1",
        "hgnc": "HGNC:9859",
        "name": "Rap1 GTPase-GDP dissociation stimulator 1",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rap1gds1"
      },
      {
        "slug": "slc25a36",
        "symbol": "SLC25A36",
        "hgnc": "HGNC:25554",
        "name": "solute carrier family 25 member 36",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/slc25a36"
      },
      {
        "slug": "srcap",
        "symbol": "SRCAP",
        "hgnc": "HGNC:16974",
        "name": "Snf2 related CREBBP activator protein",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/srcap"
      },
      {
        "slug": "stag2",
        "symbol": "STAG2",
        "hgnc": "HGNC:11355",
        "name": "STAG2 cohesin complex component",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/stag2"
      },
      {
        "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": "wars2",
        "symbol": "WARS2",
        "hgnc": "HGNC:12730",
        "name": "tryptophanyl tRNA synthetase 2, mitochondrial",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/wars2"
      },
      {
        "slug": "yars1",
        "symbol": "YARS1",
        "hgnc": "HGNC:12840",
        "name": "tyrosyl-tRNA synthetase 1",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/yars1"
      },
      {
        "slug": "yme1l1",
        "symbol": "YME1L1",
        "hgnc": "HGNC:12843",
        "name": "YME1 like 1 ATPase",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/yme1l1"
      },
      {
        "slug": "foxp1",
        "symbol": "FOXP1",
        "hgnc": "HGNC:3823",
        "name": "forkhead box P1",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/foxp1"
      },
      {
        "slug": "gne",
        "symbol": "GNE",
        "hgnc": "HGNC:23657",
        "name": "glucosamine (UDP-N-acetyl)-2-epimerase/N-acetylmannosamine kinase",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gne"
      },
      {
        "slug": "gnptab",
        "symbol": "GNPTAB",
        "hgnc": "HGNC:29670",
        "name": "N-acetylglucosamine-1-phosphate transferase subunits alpha and beta",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gnptab"
      },
      {
        "slug": "rai1",
        "symbol": "RAI1",
        "hgnc": "HGNC:9834",
        "name": "retinoic acid induced 1",
        "frequency": "very-frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/rai1"
      },
      {
        "slug": "zeb2",
        "symbol": "ZEB2",
        "hgnc": "HGNC:14881",
        "name": "zinc finger E-box binding homeobox 2",
        "frequency": "very-frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/zeb2"
      },
      {
        "slug": "ahdc1",
        "symbol": "AHDC1",
        "hgnc": "HGNC:25230",
        "name": "AT-hook DNA binding motif containing 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ahdc1"
      },
      {
        "slug": "cdon",
        "symbol": "CDON",
        "hgnc": "HGNC:17104",
        "name": "cell adhesion associated, oncogene regulated",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cdon"
      },
      {
        "slug": "cripto",
        "symbol": "CRIPTO",
        "hgnc": "HGNC:11701",
        "name": "cripto, EGF-CFC family member",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cripto"
      },
      {
        "slug": "disp1",
        "symbol": "DISP1",
        "hgnc": "HGNC:19711",
        "name": "dispatched RND transporter family member 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/disp1"
      },
      {
        "slug": "dll1",
        "symbol": "DLL1",
        "hgnc": "HGNC:2908",
        "name": "delta like canonical Notch ligand 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dll1"
      },
      {
        "slug": "fgf8",
        "symbol": "FGF8",
        "hgnc": "HGNC:3686",
        "name": "fibroblast growth factor 8",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fgf8"
      },
      {
        "slug": "foxh1",
        "symbol": "FOXH1",
        "hgnc": "HGNC:3814",
        "name": "forkhead box H1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/foxh1"
      },
      {
        "slug": "foxp2",
        "symbol": "FOXP2",
        "hgnc": "HGNC:13875",
        "name": "forkhead box P2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/foxp2"
      },
      {
        "slug": "gas1",
        "symbol": "GAS1",
        "hgnc": "HGNC:4165",
        "name": "growth arrest specific 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gas1"
      },
      {
        "slug": "gli2",
        "symbol": "GLI2",
        "hgnc": "HGNC:4318",
        "name": "GLI family zinc finger 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gli2"
      },
      {
        "slug": "gnb1",
        "symbol": "GNB1",
        "hgnc": "HGNC:4396",
        "name": "G protein subunit beta 1",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/gnb1"
      },
      {
        "slug": "nodal",
        "symbol": "NODAL",
        "hgnc": "HGNC:7865",
        "name": "nodal growth differentiation factor",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/nodal"
      },
      {
        "slug": "ptch1",
        "symbol": "PTCH1",
        "hgnc": "HGNC:9585",
        "name": "patched 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ptch1"
      },
      {
        "slug": "puf60",
        "symbol": "PUF60",
        "hgnc": "HGNC:17042",
        "name": "poly(U) binding splicing factor 60",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/puf60"
      },
      {
        "slug": "scn4a",
        "symbol": "SCN4A",
        "hgnc": "HGNC:10591",
        "name": "sodium voltage-gated channel alpha subunit 4",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/scn4a"
      },
      {
        "slug": "shh",
        "symbol": "SHH",
        "hgnc": "HGNC:10848",
        "name": "sonic hedgehog signaling molecule",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/shh"
      },
      {
        "slug": "six3",
        "symbol": "SIX3",
        "hgnc": "HGNC:10889",
        "name": "SIX homeobox 3",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/six3"
      },
      {
        "slug": "stil",
        "symbol": "STIL",
        "hgnc": "HGNC:10879",
        "name": "STIL centriolar assembly protein",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/stil"
      },
      {
        "slug": "tgif1",
        "symbol": "TGIF1",
        "hgnc": "HGNC:11776",
        "name": "TGFB induced factor homeobox 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tgif1"
      },
      {
        "slug": "tnnt1",
        "symbol": "TNNT1",
        "hgnc": "HGNC:11948",
        "name": "troponin T1, slow skeletal type",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tnnt1"
      },
      {
        "slug": "tubb3",
        "symbol": "TUBB3",
        "hgnc": "HGNC:20772",
        "name": "tubulin beta 3 class III",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tubb3"
      },
      {
        "slug": "zic2",
        "symbol": "ZIC2",
        "hgnc": "HGNC:12873",
        "name": "Zic family zinc finger 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/zic2"
      },
      {
        "slug": "kmt2d",
        "symbol": "KMT2D",
        "hgnc": "HGNC:7133",
        "name": "lysine methyltransferase 2D",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kmt2d"
      },
      {
        "slug": "msl2",
        "symbol": "MSL2",
        "hgnc": "HGNC:25544",
        "name": "MSL complex subunit 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/msl2"
      },
      {
        "slug": "sdha",
        "symbol": "SDHA",
        "hgnc": "HGNC:10680",
        "name": "succinate dehydrogenase complex flavoprotein subunit A",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sdha"
      },
      {
        "slug": "sdhaf1",
        "symbol": "SDHAF1",
        "hgnc": "HGNC:33867",
        "name": "succinate dehydrogenase complex assembly factor 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sdhaf1"
      },
      {
        "slug": "sdhb",
        "symbol": "SDHB",
        "hgnc": "HGNC:10681",
        "name": "succinate dehydrogenase complex iron sulfur subunit B",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sdhb"
      },
      {
        "slug": "sdhd",
        "symbol": "SDHD",
        "hgnc": "HGNC:10683",
        "name": "succinate dehydrogenase complex subunit D",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sdhd"
      },
      {
        "slug": "shmt2",
        "symbol": "SHMT2",
        "hgnc": "HGNC:10852",
        "name": "serine hydroxymethyltransferase 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/shmt2"
      },
      {
        "slug": "flcn",
        "symbol": "FLCN",
        "hgnc": "HGNC:27310",
        "name": "folliculin",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/flcn"
      },
      {
        "slug": "nsd1",
        "symbol": "NSD1",
        "hgnc": "HGNC:14234",
        "name": "nuclear receptor binding SET domain protein 1",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/nsd1"
      }
    ]
  }
}