{
  "url": "https://dantelabs.com/traits/retrocollis",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "retrocollis",
    "id": "HP:0002544",
    "name": "Retrocollis",
    "definition": "A form of torticollis in which the head is drawn back, either due to a permanent contractures of neck extensor muscles, or to a spasmodic contracture.",
    "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"
      },
      {
        "slug": "abnormality-of-the-nervous-system",
        "name": "Abnormality of the nervous system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-nervous-system"
      }
    ],
    "broader": [
      {
        "slug": "torticollis",
        "name": "Wry neck",
        "url": "https://dantelabs.com/traits/torticollis"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "als2",
        "symbol": "ALS2",
        "hgnc": "HGNC:443",
        "name": "alsin Rho guanine nucleotide exchange factor ALS2",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/als2"
      },
      {
        "slug": "tspoap1",
        "symbol": "TSPOAP1",
        "hgnc": "HGNC:16831",
        "name": "TSPO associated protein 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tspoap1"
      },
      {
        "slug": "atp13a2",
        "symbol": "ATP13A2",
        "hgnc": "HGNC:30213",
        "name": "ATPase cation transporting 13A2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/atp13a2"
      },
      {
        "slug": "erlin1",
        "symbol": "ERLIN1",
        "hgnc": "HGNC:16947",
        "name": "ER lipid raft associated 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/erlin1"
      },
      {
        "slug": "fus",
        "symbol": "FUS",
        "hgnc": "HGNC:4010",
        "name": "FUS RNA binding protein",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fus"
      },
      {
        "slug": "gne",
        "symbol": "GNE",
        "hgnc": "HGNC:23657",
        "name": "glucosamine (UDP-N-acetyl)-2-epimerase/N-acetylmannosamine kinase",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gne"
      },
      {
        "slug": "sigmar1",
        "symbol": "SIGMAR1",
        "hgnc": "HGNC:8157",
        "name": "sigma receptor chaperone 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sigmar1"
      },
      {
        "slug": "sord",
        "symbol": "SORD",
        "hgnc": "HGNC:11184",
        "name": "sorbitol dehydrogenase",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sord"
      },
      {
        "slug": "spg11",
        "symbol": "SPG11",
        "hgnc": "HGNC:11226",
        "name": "SPG11 vesicle trafficking associated, spatacsin",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/spg11"
      },
      {
        "slug": "sptlc1",
        "symbol": "SPTLC1",
        "hgnc": "HGNC:11277",
        "name": "serine palmitoyltransferase long chain base subunit 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sptlc1"
      },
      {
        "slug": "sptlc2",
        "symbol": "SPTLC2",
        "hgnc": "HGNC:11278",
        "name": "serine palmitoyltransferase long chain base subunit 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sptlc2"
      },
      {
        "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": "tardbp",
        "symbol": "TARDBP",
        "hgnc": "HGNC:11571",
        "name": "TAR DNA binding protein",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tardbp"
      },
      {
        "slug": "trmt2b",
        "symbol": "TRMT2B",
        "hgnc": "HGNC:25748",
        "name": "tRNA methyltransferase 2B",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/trmt2b"
      },
      {
        "slug": "ubqln2",
        "symbol": "UBQLN2",
        "hgnc": "HGNC:12509",
        "name": "ubiquilin 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ubqln2"
      },
      {
        "slug": "kmt2b",
        "symbol": "KMT2B",
        "hgnc": "HGNC:15840",
        "name": "lysine methyltransferase 2B",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kmt2b"
      },
      {
        "slug": "mapt",
        "symbol": "MAPT",
        "hgnc": "HGNC:6893",
        "name": "microtubule associated protein tau",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mapt"
      },
      {
        "slug": "prkra",
        "symbol": "PRKRA",
        "hgnc": "HGNC:9438",
        "name": "protein activator of interferon induced protein kinase EIF2AK2",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/prkra"
      }
    ]
  }
}