{
  "url": "https://dantelabs.com/traits/hypoplastic-toenails",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "hypoplastic-toenails",
    "id": "HP:0001800",
    "name": "Underdeveloped toenails",
    "label": "Hypoplastic toenails",
    "definition": "Underdevelopment of the toenail.",
    "synonyms": [],
    "systems": [
      {
        "slug": "abnormality-of-the-integument",
        "name": "Abnormality of the integument",
        "url": "https://dantelabs.com/traits/abnormality-of-the-integument"
      }
    ],
    "broader": [
      {
        "slug": "aplastic-hypoplastic-toenail",
        "name": "Absent/small toenails",
        "url": "https://dantelabs.com/traits/aplastic-hypoplastic-toenail"
      },
      {
        "slug": "small-nail",
        "name": "Small nail",
        "url": "https://dantelabs.com/traits/small-nail"
      }
    ],
    "narrower": [
      {
        "slug": "hypoplastic-fifth-toenail",
        "name": "Small fifth toenail",
        "genes": 18,
        "url": "https://dantelabs.com/traits/hypoplastic-fifth-toenail"
      }
    ],
    "genes": [
      {
        "slug": "fto",
        "symbol": "FTO",
        "hgnc": "HGNC:24678",
        "name": "FTO alpha-ketoglutarate dependent dioxygenase",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fto"
      },
      {
        "slug": "pigf",
        "symbol": "PIGF",
        "hgnc": "HGNC:8962",
        "name": "phosphatidylinositol glycan anchor biosynthesis class F",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pigf"
      },
      {
        "slug": "polr1a",
        "symbol": "POLR1A",
        "hgnc": "HGNC:17264",
        "name": "RNA polymerase I subunit A",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/polr1a"
      },
      {
        "slug": "ptbp1",
        "symbol": "PTBP1",
        "hgnc": "HGNC:9583",
        "name": "polypyrimidine tract binding protein 1",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ptbp1"
      },
      {
        "slug": "tbc1d24",
        "symbol": "TBC1D24",
        "hgnc": "HGNC:29203",
        "name": "TBC1 domain family member 24",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tbc1d24"
      },
      {
        "slug": "ubap2l",
        "symbol": "UBAP2L",
        "hgnc": "HGNC:29877",
        "name": "ubiquitin associated protein 2 like",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ubap2l"
      },
      {
        "slug": "ctnnb1",
        "symbol": "CTNNB1",
        "hgnc": "HGNC:2514",
        "name": "catenin beta 1",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ctnnb1"
      },
      {
        "slug": "dync2li1",
        "symbol": "DYNC2LI1",
        "hgnc": "HGNC:24595",
        "name": "dynein cytoplasmic 2 light intermediate chain 1",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dync2li1"
      },
      {
        "slug": "evc",
        "symbol": "EVC",
        "hgnc": "HGNC:3497",
        "name": "EvC ciliary complex subunit 1",
        "frequency": "very-frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/evc"
      },
      {
        "slug": "evc2",
        "symbol": "EVC2",
        "hgnc": "HGNC:19747",
        "name": "EvC ciliary complex subunit 2",
        "frequency": "very-frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/evc2"
      },
      {
        "slug": "ezh2",
        "symbol": "EZH2",
        "hgnc": "HGNC:3527",
        "name": "enhancer of zeste 2 polycomb repressive complex 2 subunit",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ezh2"
      },
      {
        "slug": "gli1",
        "symbol": "GLI1",
        "hgnc": "HGNC:4317",
        "name": "GLI family zinc finger 1",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gli1"
      },
      {
        "slug": "msx1",
        "symbol": "MSX1",
        "hgnc": "HGNC:7391",
        "name": "msh homeobox 1",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/msx1"
      },
      {
        "slug": "nsd1",
        "symbol": "NSD1",
        "hgnc": "HGNC:14234",
        "name": "nuclear receptor binding SET domain protein 1",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/nsd1"
      },
      {
        "slug": "prkaca",
        "symbol": "PRKACA",
        "hgnc": "HGNC:9380",
        "name": "protein kinase cAMP-activated catalytic subunit alpha",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/prkaca"
      },
      {
        "slug": "prkacb",
        "symbol": "PRKACB",
        "hgnc": "HGNC:9381",
        "name": "protein kinase cAMP-activated catalytic subunit beta",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/prkacb"
      },
      {
        "slug": "ripk4",
        "symbol": "RIPK4",
        "hgnc": "HGNC:496",
        "name": "receptor interacting serine/threonine kinase 4",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ripk4"
      },
      {
        "slug": "suz12",
        "symbol": "SUZ12",
        "hgnc": "HGNC:17101",
        "name": "SUZ12 polycomb repressive complex 2 subunit",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/suz12"
      },
      {
        "slug": "baz1b",
        "symbol": "BAZ1B",
        "hgnc": "HGNC:961",
        "name": "bromodomain adjacent to zinc finger domain 1B",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/baz1b"
      },
      {
        "slug": "bud23",
        "symbol": "BUD23",
        "hgnc": "HGNC:16405",
        "name": "BUD23 rRNA methyltransferase and ribosome maturation factor",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/bud23"
      },
      {
        "slug": "clip2",
        "symbol": "CLIP2",
        "hgnc": "HGNC:2586",
        "name": "CAP-Gly domain containing linker protein 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/clip2"
      },
      {
        "slug": "dnajc30",
        "symbol": "DNAJC30",
        "hgnc": "HGNC:16410",
        "name": "DnaJ heat shock protein family (Hsp40) member C30",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dnajc30"
      },
      {
        "slug": "dph1",
        "symbol": "DPH1",
        "hgnc": "HGNC:3003",
        "name": "diphthamide biosynthesis 1",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/dph1"
      },
      {
        "slug": "dph2",
        "symbol": "DPH2",
        "hgnc": "HGNC:3004",
        "name": "diphthamide biosynthesis 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dph2"
      },
      {
        "slug": "eif4h",
        "symbol": "EIF4H",
        "hgnc": "HGNC:12741",
        "name": "eukaryotic translation initiation factor 4H",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/eif4h"
      },
      {
        "slug": "eln",
        "symbol": "ELN",
        "hgnc": "HGNC:3327",
        "name": "elastin",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/eln"
      },
      {
        "slug": "eogt",
        "symbol": "EOGT",
        "hgnc": "HGNC:28526",
        "name": "EGF domain specific O-linked N-acetylglucosamine transferase",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/eogt"
      },
      {
        "slug": "fkbp6",
        "symbol": "FKBP6",
        "hgnc": "HGNC:3722",
        "name": "FKBP prolyl isomerase family member 6 (inactive)",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fkbp6"
      },
      {
        "slug": "gtf2i",
        "symbol": "GTF2I",
        "hgnc": "HGNC:4659",
        "name": "general transcription factor IIi",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gtf2i"
      },
      {
        "slug": "gtf2ird1",
        "symbol": "GTF2IRD1",
        "hgnc": "HGNC:4661",
        "name": "GTF2I repeat domain containing 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gtf2ird1"
      },
      {
        "slug": "gtf2ird2",
        "symbol": "GTF2IRD2",
        "hgnc": "HGNC:30775",
        "name": "GTF2I repeat domain containing 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gtf2ird2"
      },
      {
        "slug": "hras",
        "symbol": "HRAS",
        "hgnc": "HGNC:5173",
        "name": "HRas proto-oncogene, GTPase",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/hras"
      },
      {
        "slug": "inppl1",
        "symbol": "INPPL1",
        "hgnc": "HGNC:6080",
        "name": "inositol polyphosphate phosphatase like 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/inppl1"
      },
      {
        "slug": "kdm1a",
        "symbol": "KDM1A",
        "hgnc": "HGNC:29079",
        "name": "lysine demethylase 1A",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/kdm1a"
      },
      {
        "slug": "limk1",
        "symbol": "LIMK1",
        "hgnc": "HGNC:6613",
        "name": "LIM domain kinase 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/limk1"
      },
      {
        "slug": "mettl27",
        "symbol": "METTL27",
        "hgnc": "HGNC:19068",
        "name": "methyltransferase like 27",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mettl27"
      },
      {
        "slug": "ncf1",
        "symbol": "NCF1",
        "hgnc": "HGNC:7660",
        "name": "neutrophil cytosolic factor 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ncf1"
      },
      {
        "slug": "rfc2",
        "symbol": "RFC2",
        "hgnc": "HGNC:9970",
        "name": "replication factor C subunit 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rfc2"
      },
      {
        "slug": "sco2",
        "symbol": "SCO2",
        "hgnc": "HGNC:10604",
        "name": "synthesis of cytochrome C oxidase 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sco2"
      },
      {
        "slug": "shank3",
        "symbol": "SHANK3",
        "hgnc": "HGNC:14294",
        "name": "SH3 and multiple ankyrin repeat domains 3",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/shank3"
      },
      {
        "slug": "slc35d1",
        "symbol": "SLC35D1",
        "hgnc": "HGNC:20800",
        "name": "solute carrier family 35 member D1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/slc35d1"
      },
      {
        "slug": "stx1a",
        "symbol": "STX1A",
        "hgnc": "HGNC:11433",
        "name": "syntaxin 1A",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/stx1a"
      },
      {
        "slug": "tbl2",
        "symbol": "TBL2",
        "hgnc": "HGNC:11586",
        "name": "transducin beta like 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tbl2"
      },
      {
        "slug": "tmem270",
        "symbol": "TMEM270",
        "hgnc": "HGNC:23018",
        "name": "transmembrane protein 270",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tmem270"
      },
      {
        "slug": "vps37d",
        "symbol": "VPS37D",
        "hgnc": "HGNC:18287",
        "name": "VPS37D subunit of ESCRT-I",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/vps37d"
      },
      {
        "slug": "zic3",
        "symbol": "ZIC3",
        "hgnc": "HGNC:12874",
        "name": "Zic family zinc finger 3",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/zic3"
      },
      {
        "slug": "aff4",
        "symbol": "AFF4",
        "hgnc": "HGNC:17869",
        "name": "ALF transcription elongation factor 4",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/aff4"
      },
      {
        "slug": "atp6v1b2",
        "symbol": "ATP6V1B2",
        "hgnc": "HGNC:854",
        "name": "ATPase H+ transporting V1 subunit B2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/atp6v1b2"
      },
      {
        "slug": "eif5a",
        "symbol": "EIF5A",
        "hgnc": "HGNC:3300",
        "name": "eukaryotic translation initiation factor 5A",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/eif5a"
      },
      {
        "slug": "notch1",
        "symbol": "NOTCH1",
        "hgnc": "HGNC:7881",
        "name": "notch receptor 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/notch1"
      },
      {
        "slug": "odc1",
        "symbol": "ODC1",
        "hgnc": "HGNC:8109",
        "name": "ornithine decarboxylase 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/odc1"
      },
      {
        "slug": "ppp1cb",
        "symbol": "PPP1CB",
        "hgnc": "HGNC:9282",
        "name": "protein phosphatase 1 catalytic subunit beta",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ppp1cb"
      },
      {
        "slug": "shoc2",
        "symbol": "SHOC2",
        "hgnc": "HGNC:15454",
        "name": "SHOC2 leucine rich repeat scaffold protein",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/shoc2"
      },
      {
        "slug": "tbx3",
        "symbol": "TBX3",
        "hgnc": "HGNC:11602",
        "name": "T-box transcription factor 3",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tbx3"
      },
      {
        "slug": "tbx4",
        "symbol": "TBX4",
        "hgnc": "HGNC:11603",
        "name": "T-box transcription factor 4",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tbx4"
      },
      {
        "slug": "tctn3",
        "symbol": "TCTN3",
        "hgnc": "HGNC:24519",
        "name": "tectonic family member 3",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tctn3"
      },
      {
        "slug": "telo2",
        "symbol": "TELO2",
        "hgnc": "HGNC:29099",
        "name": "telomere maintenance 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/telo2"
      },
      {
        "slug": "wls",
        "symbol": "WLS",
        "hgnc": "HGNC:30238",
        "name": "Wnt ligand secretion mediator",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/wls"
      },
      {
        "slug": "zmym2",
        "symbol": "ZMYM2",
        "hgnc": "HGNC:12989",
        "name": "zinc finger MYM-type containing 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/zmym2"
      },
      {
        "slug": "dll4",
        "symbol": "DLL4",
        "hgnc": "HGNC:2910",
        "name": "delta like canonical Notch ligand 4",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dll4"
      },
      {
        "slug": "ebf3",
        "symbol": "EBF3",
        "hgnc": "HGNC:19087",
        "name": "EBF transcription factor 3",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ebf3"
      },
      {
        "slug": "col11a1",
        "symbol": "COL11A1",
        "hgnc": "HGNC:2186",
        "name": "collagen type XI alpha 1 chain",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/col11a1"
      },
      {
        "slug": "cpt2",
        "symbol": "CPT2",
        "hgnc": "HGNC:2330",
        "name": "carnitine palmitoyltransferase 2",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cpt2"
      },
      {
        "slug": "fgfr1",
        "symbol": "FGFR1",
        "hgnc": "HGNC:3688",
        "name": "fibroblast growth factor receptor 1",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fgfr1"
      },
      {
        "slug": "nectin4",
        "symbol": "NECTIN4",
        "hgnc": "HGNC:19688",
        "name": "nectin cell adhesion molecule 4",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/nectin4"
      },
      {
        "slug": "smarce1",
        "symbol": "SMARCE1",
        "hgnc": "HGNC:11109",
        "name": "SWI/SNF related BAF chromatin remodeling complex subunit E1",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/smarce1"
      }
    ]
  }
}