{
  "url": "https://dantelabs.com/traits/abnormal-sperm-tail-morphology",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "abnormal-sperm-tail-morphology",
    "id": "HP:0012868",
    "name": "Abnormal sperm tail morphology",
    "definition": "A structural abnormality of the sperm tail.",
    "synonyms": [
      "Sperm tail anomaly"
    ],
    "systems": [
      {
        "slug": "abnormality-of-the-genitourinary-system",
        "name": "Abnormality of the genitourinary system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-genitourinary-system"
      }
    ],
    "broader": [
      {
        "slug": "abnormal-sperm-morphology",
        "name": "Abnormal shape of sperm",
        "url": "https://dantelabs.com/traits/abnormal-sperm-morphology"
      }
    ],
    "narrower": [
      {
        "slug": "short-sperm-flagella",
        "name": "Short sperm flagella",
        "genes": 40,
        "url": "https://dantelabs.com/traits/short-sperm-flagella"
      },
      {
        "slug": "coiled-sperm-flagella",
        "name": "Coiled sperm flagella",
        "genes": 39,
        "url": "https://dantelabs.com/traits/coiled-sperm-flagella"
      },
      {
        "slug": "absent-sperm-flagella",
        "name": "Absent sperm flagella",
        "genes": 35,
        "url": "https://dantelabs.com/traits/absent-sperm-flagella"
      },
      {
        "slug": "irregularly-shaped-sperm-tail",
        "name": "Irregularly shaped sperm tail",
        "genes": 21,
        "url": "https://dantelabs.com/traits/irregularly-shaped-sperm-tail"
      },
      {
        "slug": "bent-sperm-flagella",
        "name": "Bent sperm flagella",
        "genes": 4,
        "url": "https://dantelabs.com/traits/bent-sperm-flagella"
      },
      {
        "slug": "multiflagellar-spermatozoa",
        "name": "Multiflagellar spermatozoa",
        "genes": 4,
        "url": "https://dantelabs.com/traits/multiflagellar-spermatozoa"
      },
      {
        "slug": "altered-location-of-the-longitudinal-column-in-the-fibrous-sheath",
        "name": "Altered location of the longitudinal column in the fibrous sheath",
        "genes": 1,
        "url": "https://dantelabs.com/traits/altered-location-of-the-longitudinal-column-in-the-fibrous-sheath"
      }
    ],
    "genes": [
      {
        "slug": "catsper2",
        "symbol": "CATSPER2",
        "hgnc": "HGNC:18810",
        "name": "cation channel sperm associated 2",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/catsper2"
      },
      {
        "slug": "strc",
        "symbol": "STRC",
        "hgnc": "HGNC:16035",
        "name": "stereocilin",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/strc"
      }
    ]
  }
}