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Original Article
- Low Ki-67 labeling index is a clinically useful predictive factor for recurrence-free survival in patients with papillary thyroid carcinoma
- Takashi Masui, Katsunari Yane, Ichiro Ota, Kennichi Kakudo, Tomoko Wakasa, Satoru Koike, Hirotaka Kinugawa, Ryuji Yasumatsu, Tadashi Kitahara
- J Pathol Transl Med. 2025;59(2):115-124. Published online February 18, 2025
- DOI: https://doi.org/10.4132/jptm.2024.11.08
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Abstract
PDF - Background
We report a new risk stratification of invasive stage papillary thyroid carcinomas (PTCs) by combining invasive status, using extrathyroid invasion (Ex) status, and tumor growth speed using the Ki-67 labeling index (LI). Methods: We examined tumor recurrence in 167 patients with PTC who were surgically treated at the Kindai University Nara Hospital between 2010 and 2022. The patients were classified according to the degree of invasion [negative (Ex0) or positive (Ex1, Ex2, and Ex3)] and tumor growth speed expressed with Ki-67 LI, as low (<5%) or high (>5%). This study confirmed previous findings that the disease-free survival (DFS) rate in PTCs significantly differed between patients with a high and low Ki-67 index. Results: When combining Ex status (negative or positive) and Ki-67 proliferation status (low or high), the DFS rate of invasion in the negative, low Ki-67 LI group was only 1.1%, while that of invasion in the positive, high Ki-67 LI was 44.1%. This study reports for the first time that recurrence risks can be stratified accurately when combining carcinoma’s essential two features of extrathyroid invasion status and tumor growth speed. Conclusions: We believe the evidence for low tumor recurrence risk may contribute to use of more conservative treatment options for invasive-stage PTCs and help alleviate patient anxiety about tumor recurrence and death. -
Citations
Citations to this article as recorded by
- Research Progress on the Correlation between Three Biomarkers, Ki-67, CAIX and VEGF and Clear Cell Renal Cell Carcinoma
锦容 马
Advances in Clinical Medicine.2025; 15(09): 326. CrossRef - Immunophenotypic Panel for Comprehensive Characterization of Aggressive Thyroid Carcinomas
Mihail Ceausu, Mihai Alin Publik, Dana Terzea, Carmen Adina Cristea, Dumitru Ioachim, Dana Manda, Sorina Schipor
Cells.2025; 14(19): 1554. CrossRef - High Ki-67 labeling index correlates with aggressive clinicopathological features in papillary thyroid carcinoma: a retrospective study
Defi Nurlia Erdian, Maria Francisca Ham, Dina Khoirunnisa, Agnes Stephanie Harahap
Thyroid Research.2025;[Epub] CrossRef
- Research Progress on the Correlation between Three Biomarkers, Ki-67, CAIX and VEGF and Clear Cell Renal Cell Carcinoma
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