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Kim K, Byun YJ, Zheng CM, Moon S, Jo SJ, Kang HW, Kim WT, Choi YH, Moon SK, Kim WJ, Piao XM, Yun SJ. COL6A1 expression as a potential prognostic biomarker for risk stratification of T1 high grade bladder cancer: Unveiling the aggressive nature of a distinct non-muscle invasive subtype. Investig Clin Urol 2024; 65:94-103. [PMID: 38197756 PMCID: PMC10789541 DOI: 10.4111/icu.20230227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/23/2023] [Accepted: 10/05/2023] [Indexed: 01/11/2024] Open
Abstract
PURPOSE T1 high grade (T1HG) bladder cancer (BC) is a type of non-muscle invasive BC (NMIBC) that is recognized as an aggressive subtype with a heightened propensity for progression. Current risk stratification methods for NMIBC rely on clinicopathological indicators; however, these approaches do not adequately capture the aggressive nature of T1HG BC. Thus, new, more accurate biomarkers for T1HG risk stratification are needed. Here, we enrolled three different patient cohorts and investigated expression of collagen type VI alpha 1 (COL6A1), a key component of the extracellular matrix, at different stages and grades of BC, with a specific focus on T1HG BC. MATERIALS AND METHODS Samples from 298 BC patients were subjected to RNA sequencing and real-time polymerase chain reaction. RESULTS We found that T1HG BC and muscle invasive BC (MIBC) exhibited comparable expression of COL6A1, which was significantly higher than that by other NMIBC subtypes. In particular, T1HG patients who later progressed to MIBC had considerably higher expression of COL6A1 than Ta, T1 low grade patients, and patients that did not progress, highlighting the aggressive nature and higher risk of progression associated with T1HG BC. Moreover, Cox and Kaplan-Meier survival analyses revealed a significant association between elevated expression of COL6A1 and poor progression-free survival of T1HG BC patients (multivariate Cox hazard ratio, 16.812; 95% confidence interval, 3.283-86.095; p=0.001 and p=0.0002 [log-rank test]). CONCLUSIONS These findings suggest that COL6A1 may be a promising biomarker for risk stratification of T1HG BC, offering valuable insight into disease prognosis and guidance of personalized treatment decisions.
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Affiliation(s)
- Kyeong Kim
- Department of Urology, Chungbuk National University Hospital, Cheongju, Korea
| | - Young Joon Byun
- Department of Urology, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Chuang-Ming Zheng
- Department of Urology, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Sungmin Moon
- Department of Urology, Chungbuk National University Hospital, Cheongju, Korea
- Department of Convergence of Medical Science, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Soo Jeong Jo
- Department of Convergence of Medical Science, Chungbuk National University College of Medicine, Cheongju, Korea
- Department of Rehabilitation Medicine, Chungbuk National University Hospital, Cheongju, Korea
| | - Ho Won Kang
- Department of Urology, Chungbuk National University Hospital, Cheongju, Korea
- Department of Urology, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Won Tae Kim
- Department of Urology, Chungbuk National University Hospital, Cheongju, Korea
- Department of Urology, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Yung Hyun Choi
- Department of Biochemistry, College of Oriental Medicine, Dong-Eui University, Busan, Korea
| | - Sung-Kwon Moon
- Department of Food Science and Technology, Chung-Ang University, Ansung, Korea
| | | | - Xuan-Mei Piao
- Department of Urology, Chungbuk National University College of Medicine, Cheongju, Korea.
| | - Seok Joong Yun
- Department of Urology, Chungbuk National University Hospital, Cheongju, Korea
- Department of Urology, Chungbuk National University College of Medicine, Cheongju, Korea.
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