{
  "url": "https://dantelabs.com/traits/ankle-clonus",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "ankle-clonus",
    "id": "HP:0011448",
    "name": "Abnormal rhythmic movements of ankle",
    "label": "Ankle clonus",
    "definition": "Clonus is an involuntary tendon reflex that causes repeated flexion and extension of the foot. Ankle clonus is tested by rapidly flexing the foot upward.",
    "synonyms": [],
    "systems": [
      {
        "slug": "abnormality-of-limbs",
        "name": "Abnormality of limbs",
        "url": "https://dantelabs.com/traits/abnormality-of-limbs"
      },
      {
        "slug": "abnormality-of-the-musculoskeletal-system",
        "name": "Abnormality of the musculoskeletal system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-musculoskeletal-system"
      },
      {
        "slug": "abnormality-of-the-nervous-system",
        "name": "Abnormality of the nervous system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-nervous-system"
      }
    ],
    "broader": [
      {
        "slug": "abnormal-ankle-physiology",
        "name": "Abnormal ankle physiology",
        "url": "https://dantelabs.com/traits/abnormal-ankle-physiology"
      },
      {
        "slug": "clonus",
        "name": "Clonus",
        "url": "https://dantelabs.com/traits/clonus"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "ahdc1",
        "symbol": "AHDC1",
        "hgnc": "HGNC:25230",
        "name": "AT-hook DNA binding motif containing 1",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ahdc1"
      },
      {
        "slug": "coq4",
        "symbol": "COQ4",
        "hgnc": "HGNC:19693",
        "name": "coenzyme Q4",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/coq4"
      },
      {
        "slug": "cyp27a1",
        "symbol": "CYP27A1",
        "hgnc": "HGNC:2605",
        "name": "cytochrome P450 family 27 subfamily A member 1",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cyp27a1"
      },
      {
        "slug": "gcsh",
        "symbol": "GCSH",
        "hgnc": "HGNC:4208",
        "name": "glycine cleavage system protein H",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gcsh"
      },
      {
        "slug": "mars1",
        "symbol": "MARS1",
        "hgnc": "HGNC:6898",
        "name": "methionyl-tRNA synthetase 1",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mars1"
      },
      {
        "slug": "ndufs8",
        "symbol": "NDUFS8",
        "hgnc": "HGNC:7715",
        "name": "NADH:ubiquinone oxidoreductase core subunit S8",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ndufs8"
      },
      {
        "slug": "nt5c2",
        "symbol": "NT5C2",
        "hgnc": "HGNC:8022",
        "name": "5'-nucleotidase, cytosolic II",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/nt5c2"
      },
      {
        "slug": "pex1",
        "symbol": "PEX1",
        "hgnc": "HGNC:8850",
        "name": "peroxisomal biogenesis factor 1",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pex1"
      },
      {
        "slug": "pi4ka",
        "symbol": "PI4KA",
        "hgnc": "HGNC:8983",
        "name": "phosphatidylinositol 4-kinase alpha",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pi4ka"
      },
      {
        "slug": "rtn2",
        "symbol": "RTN2",
        "hgnc": "HGNC:10468",
        "name": "reticulon 2",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rtn2"
      },
      {
        "slug": "selenoi",
        "symbol": "SELENOI",
        "hgnc": "HGNC:29361",
        "name": "selenoprotein I",
        "frequency": "obligate",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/selenoi"
      },
      {
        "slug": "smg9",
        "symbol": "SMG9",
        "hgnc": "HGNC:25763",
        "name": "SMG9 nonsense mediated mRNA decay factor",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/smg9"
      },
      {
        "slug": "sod1",
        "symbol": "SOD1",
        "hgnc": "HGNC:11179",
        "name": "superoxide dismutase 1",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sod1"
      },
      {
        "slug": "sptbn2",
        "symbol": "SPTBN2",
        "hgnc": "HGNC:11276",
        "name": "spectrin beta, non-erythrocytic 2",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sptbn2"
      },
      {
        "slug": "erlin2",
        "symbol": "ERLIN2",
        "hgnc": "HGNC:1356",
        "name": "ER lipid raft associated 2",
        "frequency": "very-frequent",
        "diseases": 4,
        "url": "https://dantelabs.com/genes/erlin2"
      },
      {
        "slug": "aars1",
        "symbol": "AARS1",
        "hgnc": "HGNC:20",
        "name": "alanyl-tRNA synthetase 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/aars1"
      },
      {
        "slug": "ano10",
        "symbol": "ANO10",
        "hgnc": "HGNC:25519",
        "name": "anoctamin 10",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ano10"
      },
      {
        "slug": "atl1",
        "symbol": "ATL1",
        "hgnc": "HGNC:11231",
        "name": "atlastin GTPase 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/atl1"
      },
      {
        "slug": "capn1",
        "symbol": "CAPN1",
        "hgnc": "HGNC:1476",
        "name": "calpain 1",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/capn1"
      },
      {
        "slug": "ccdc88c",
        "symbol": "CCDC88C",
        "hgnc": "HGNC:19967",
        "name": "coiled-coil and HOOK domain protein 88C",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ccdc88c"
      },
      {
        "slug": "cyp7b1",
        "symbol": "CYP7B1",
        "hgnc": "HGNC:2652",
        "name": "cytochrome P450 family 7 subfamily B member 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cyp7b1"
      },
      {
        "slug": "fa2h",
        "symbol": "FA2H",
        "hgnc": "HGNC:21197",
        "name": "fatty acid 2-hydroxylase",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/fa2h"
      },
      {
        "slug": "gfm2",
        "symbol": "GFM2",
        "hgnc": "HGNC:29682",
        "name": "GTP dependent ribosome recycling factor mitochondrial 2",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/gfm2"
      },
      {
        "slug": "kif1a",
        "symbol": "KIF1A",
        "hgnc": "HGNC:888",
        "name": "kinesin family member 1A",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/kif1a"
      },
      {
        "slug": "klc2",
        "symbol": "KLC2",
        "hgnc": "HGNC:20716",
        "name": "kinesin light chain 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/klc2"
      },
      {
        "slug": "kpna3",
        "symbol": "KPNA3",
        "hgnc": "HGNC:6396",
        "name": "karyopherin subunit alpha 3",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kpna3"
      },
      {
        "slug": "pla2g6",
        "symbol": "PLA2G6",
        "hgnc": "HGNC:9039",
        "name": "phospholipase A2 group VI",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pla2g6"
      },
      {
        "slug": "pou3f4",
        "symbol": "POU3F4",
        "hgnc": "HGNC:9217",
        "name": "POU class 3 homeobox 4",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pou3f4"
      },
      {
        "slug": "reep1",
        "symbol": "REEP1",
        "hgnc": "HGNC:25786",
        "name": "receptor accessory protein 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/reep1"
      },
      {
        "slug": "slc1a4",
        "symbol": "SLC1A4",
        "hgnc": "HGNC:10942",
        "name": "solute carrier family 1 member 4",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/slc1a4"
      },
      {
        "slug": "slc39a14",
        "symbol": "SLC39A14",
        "hgnc": "HGNC:20858",
        "name": "solute carrier family 39 member 14",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/slc39a14"
      },
      {
        "slug": "spast",
        "symbol": "SPAST",
        "hgnc": "HGNC:11233",
        "name": "spastin",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/spast"
      },
      {
        "slug": "sv2a",
        "symbol": "SV2A",
        "hgnc": "HGNC:20566",
        "name": "synaptic vesicle glycoprotein 2A",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sv2a"
      },
      {
        "slug": "timm8a",
        "symbol": "TIMM8A",
        "hgnc": "HGNC:11817",
        "name": "translocase of inner mitochondrial membrane 8A",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/timm8a"
      },
      {
        "slug": "tuba4a",
        "symbol": "TUBA4A",
        "hgnc": "HGNC:12407",
        "name": "tubulin alpha 4a",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tuba4a"
      },
      {
        "slug": "vac14",
        "symbol": "VAC14",
        "hgnc": "HGNC:25507",
        "name": "VAC14 component of PIKFYVE complex",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/vac14"
      },
      {
        "slug": "abcd1",
        "symbol": "ABCD1",
        "hgnc": "HGNC:61",
        "name": "ATP binding cassette subfamily D member 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/abcd1"
      },
      {
        "slug": "adgrg1",
        "symbol": "ADGRG1",
        "hgnc": "HGNC:4512",
        "name": "adhesion G protein-coupled receptor G1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/adgrg1"
      },
      {
        "slug": "atp6ap2",
        "symbol": "ATP6AP2",
        "hgnc": "HGNC:18305",
        "name": "ATPase H+ transporting accessory protein 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/atp6ap2"
      },
      {
        "slug": "cars1",
        "symbol": "CARS1",
        "hgnc": "HGNC:1493",
        "name": "cysteinyl-tRNA synthetase 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cars1"
      },
      {
        "slug": "cd40lg",
        "symbol": "CD40LG",
        "hgnc": "HGNC:11935",
        "name": "CD40 ligand",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cd40lg"
      },
      {
        "slug": "erlin1",
        "symbol": "ERLIN1",
        "hgnc": "HGNC:16947",
        "name": "ER lipid raft associated 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/erlin1"
      },
      {
        "slug": "fgf13",
        "symbol": "FGF13",
        "hgnc": "HGNC:3670",
        "name": "fibroblast growth factor 13",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fgf13"
      },
      {
        "slug": "galc",
        "symbol": "GALC",
        "hgnc": "HGNC:4115",
        "name": "galactosylceramidase",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/galc"
      },
      {
        "slug": "kif1c",
        "symbol": "KIF1C",
        "hgnc": "HGNC:6317",
        "name": "kinesin family member 1C",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kif1c"
      },
      {
        "slug": "nfu1",
        "symbol": "NFU1",
        "hgnc": "HGNC:16287",
        "name": "NFU1 iron-sulfur cluster scaffold",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/nfu1"
      },
      {
        "slug": "pex16",
        "symbol": "PEX16",
        "hgnc": "HGNC:8857",
        "name": "peroxisomal biogenesis factor 16",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pex16"
      },
      {
        "slug": "psap",
        "symbol": "PSAP",
        "hgnc": "HGNC:9498",
        "name": "prosaposin",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/psap"
      },
      {
        "slug": "rab18",
        "symbol": "RAB18",
        "hgnc": "HGNC:14244",
        "name": "RAB18, member RAS oncogene family",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rab18"
      },
      {
        "slug": "slc16a2",
        "symbol": "SLC16A2",
        "hgnc": "HGNC:10923",
        "name": "solute carrier family 16 member 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/slc16a2"
      },
      {
        "slug": "slc52a3",
        "symbol": "SLC52A3",
        "hgnc": "HGNC:16187",
        "name": "solute carrier family 52 member 3",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/slc52a3"
      },
      {
        "slug": "spart",
        "symbol": "SPART",
        "hgnc": "HGNC:18514",
        "name": "spartin",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/spart"
      },
      {
        "slug": "stub1",
        "symbol": "STUB1",
        "hgnc": "HGNC:11427",
        "name": "STIP1 homology and U-box containing protein 1",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/stub1"
      },
      {
        "slug": "syne1",
        "symbol": "SYNE1",
        "hgnc": "HGNC:17089",
        "name": "spectrin repeat containing nuclear envelope protein 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/syne1"
      },
      {
        "slug": "tceal1",
        "symbol": "TCEAL1",
        "hgnc": "HGNC:11616",
        "name": "transcription elongation factor A like 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tceal1"
      },
      {
        "slug": "vcp",
        "symbol": "VCP",
        "hgnc": "HGNC:12666",
        "name": "valosin containing protein",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/vcp"
      },
      {
        "slug": "aldh3a2",
        "symbol": "ALDH3A2",
        "hgnc": "HGNC:403",
        "name": "aldehyde dehydrogenase 3 family member A2",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/aldh3a2"
      },
      {
        "slug": "kif5a",
        "symbol": "KIF5A",
        "hgnc": "HGNC:6323",
        "name": "kinesin family member 5A",
        "frequency": "very-rare",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/kif5a"
      },
      {
        "slug": "gba2",
        "symbol": "GBA2",
        "hgnc": "HGNC:18986",
        "name": "glucosylceramidase beta 2",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gba2"
      },
      {
        "slug": "htt",
        "symbol": "HTT",
        "hgnc": "HGNC:4851",
        "name": "huntingtin",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/htt"
      },
      {
        "slug": "pigt",
        "symbol": "PIGT",
        "hgnc": "HGNC:14938",
        "name": "phosphatidylinositol glycan anchor biosynthesis class T",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pigt"
      },
      {
        "slug": "samd9l",
        "symbol": "SAMD9L",
        "hgnc": "HGNC:1349",
        "name": "sterile alpha motif domain containing 9 like",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/samd9l"
      },
      {
        "slug": "spg11",
        "symbol": "SPG11",
        "hgnc": "HGNC:11226",
        "name": "SPG11 vesicle trafficking associated, spatacsin",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/spg11"
      },
      {
        "slug": "uchl1",
        "symbol": "UCHL1",
        "hgnc": "HGNC:12513",
        "name": "ubiquitin C-terminal hydrolase L1",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/uchl1"
      }
    ]
  }
}