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Distinct Clinicopathological and Prognostic Associations of KCNQ1 Expression in Lung Adenocarcinoma and Lung Squamous Cell Carcinoma

  • Anatomy & Biological Anthropology
  • Abbr : Anat Biol Anthropol
  • 2026, 39(3), pp.301~306
  • DOI : 10.11637/aba.2026.39.3.301
  • Publisher : 대한체질인류학회
  • Research Area : Medicine and Pharmacy > Anatomy
  • Received : September 27, 2026
  • Accepted : September 27, 2026

이나윤 1,  이재호 1,  천아영 1,  차현빈 2,  Park Jae-Hee ORD ID 3

1계명대학교
2계명대학교 의과대학 해부학교실
3계명문화대학교

Accredited

ABSTRACT

KCNQ1 (potassium voltage-gated channel subfamily Q member 1) is a voltage-gated potassium channel subunit involved in the regulation of membrane potential and cellular ion homeostasis. Although ion channels have been increasingly recognized as important regulators of cancer biology, the clinical significance of KCNQ1 expression in non-small cell lung cancer (NSCLC) according to histological subtype remains unclear. This study aimed to investigate the association between KCNQ1 expression and clinicopathological characteristics and overall survival in lung adenocarcinoma (LUAD) and lung squamous cell carcinoma (LUSC). RNA sequencing and clinical data of patients with LUAD and LUSC were obtained from The Cancer Genome Atlas (TCGA) database. Patients were divided into high- and low-KCNQ1 expression groups based on the median expression value, and the associations between KCNQ1 expression and clinicopathological variables were analyzed. Overall survival was evaluated using Kaplan–Meier survival analysis. KCNQ1 expression showed different clinical associations according to the histological subtype of NSCLC. In LUSC, patients with high KCNQ1 expression demonstrated significantly poorer overall survival than those with low expression. In contrast, no significant association between KCNQ1 expression and overall survival was observed in LUAD. These findings suggest that the clinical relevance of KCNQ1 expression may differ between LUAD and LUSC. KCNQ1 expression may represent a potential subtype-specific molecular marker associated with survival outcomes, particularly in LUSC. Further studies involving tissue-level validation and functional experiments are required to clarify the biological mechanisms underlying the association between KCNQ1 expression and NSCLC progression.

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