{
  "abstract": "Background Long QT syndrome (LQTS) is considered a primary cardiac ion channelopathy. Several studies have shown that myocardial functional alterations may occur in patients with LQTS type 3 (LQT3). However, it is currently unclear whether there is a specific relationship between phenotype and genotype. The aim of this study is to provide additional information on the phenotype and genotype of LQT3 caused by a novel delKKP 1504–1506 mutation in a Chinese family. Case presentation The family came to our attention because of a sustained corrected QT interval (QTc) prolongation in a 14-year-old girl who had experienced a loss of consciousness with Mobitz type II atrioventricular block one year earlier. Three family members carrying the delKKP 1504–1506 mutation demonstrated a combination of infero-apical left ventricular aneurysms and prolonged QTc, and two members showed J-waves in the right precordial lead V2. Conclusions This case suggests that the delKKP 1504–1506 mutation in SCN5A may not only lead to impaired impulse propagation in the conduction system and a prolonged QTc, but may also be associated with infero-apical ventricular aneurysms and J-wave syndromes, possibly corresponding to regional myocardial fibrosis.",
  "abstract_shown": true,
  "affiliations": [
    "Ultrasound Department, Dongguan Hospital of Guangzhou University of Chinese Medicine",
    "Electrocardiographic Department, Dongguan Hospital of Guangzhou University of Chinese Medicine",
    "Department of Cardiology, Foshan Fosun Chancheng Hospital",
    "Department of Cardiology, Jinshazhou Hospital of Guangzhou University of Chinese Medicine"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 8,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Zhijuan Lu"
    },
    {
      "affs": [
        0
      ],
      "name": "Jiadong Lin"
    },
    {
      "affs": [
        1
      ],
      "name": "Yi Chen"
    },
    {
      "affs": [
        0
      ],
      "name": "Xiuli Zhou"
    },
    {
      "affs": [
        0
      ],
      "name": "Liping Lin"
    },
    {
      "affs": [
        2
      ],
      "name": "Xiaocong Zhang"
    },
    {
      "affs": [
        2
      ],
      "name": "Qiang Wang"
    },
    {
      "affs": [
        3
      ],
      "name": "Xinsheng Huang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9bs2kxn36v76r.bib",
  "cited_by": 0,
  "doi": "10.1186/s12920-026-02428-0",
  "fulltext_url": "https://doi.org/10.1186/s12920-026-02428-0",
  "id": "9bs2kxn36v76r",
  "issns": [
    "1755-8794"
  ],
  "landing_url": "https://doi.org/10.1186/s12920-026-02428-0",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "lcc",
      "QH426-470"
    ],
    [
      "lcc",
      "RC31-1245"
    ],
    [
      "openalex",
      "2705|Cardiac electrophysiology and arrhythmias"
    ]
  ],
  "openalex": "W7168373622",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-01",
  "publisher": "BMC",
  "ris": "https://research.draconitic.com/paper/9bs2kxn36v76r.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T13:46:36Z",
      "native_id": "d8b6867603e34a7cbaa05408e93e9bb5",
      "source": "doaj",
      "url": "https://doi.org/10.1186/s12920-026-02428-0"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2705|Cardiac electrophysiology and arrhythmias",
      "subfield": "cardiovascular"
    }
  ],
  "title": "The infero-apical left ventricular aneurysm and long QT syndrome caused by mutation delKKP 1504–1506 in SCN5A gene",
  "title_text": "The infero-apical left ventricular aneurysm and long QT syndrome caused by mutation delKKP 1504–1506 in SCN5A gene",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T13:46:36Z",
  "url": "https://research.draconitic.com/paper/9bs2kxn36v76r",
  "venue": "BMC Medical Genomics",
  "versions": []
}