JOURNAL ARTICLE

Clinicopathological comparison of VHL expression as a prognostic tumor marker in renal cell carcinoma: A single center experience

H Sekar, S Krishnamoorthy, N Kumaresan, D Chandrasekaran, P Ramaswamy, S Sundaram, N Raj
Nigerian Journal of Clinical Practice 2021, 24 (4): 614-620
33851686

Aim: To assess the VHL gene expression as a prognostic marker in Renal Cell Carcinoma (RCC) and compare it with clinicopathologic features.

Materials and Methods: This retrospective observational study was conducted in the department of Urology and Renal Transplantation in Sri Ramachandra Institute of Higher Education and Research, Chennai from August 2016 to August 2018. Thirty patients who have undergone a radical/partial nephrectomy with biopsy proven histological diagnosis of RCC during the study period were included in the study. Data was analyzed using Statistical package for Social Sciences version 17.

Results: A complete loss and retained VHL expression were noted in 60% and 40% of the RCC specimens. Association between smoking and VHL expression was found to be statistically significant. There was no statistical significance found between age group, sex, chief complaints, BMI. ECOG score, hypertension, family history, location of tumor, calcification, venous system or lymphnode involvement. However, rT staging, nature of lesion and cut surface, HPE type, pT staging, HPE grade, necrosis and lympho-vascular invasion were also found to be statistically significant.

Conclusion: Complete loss of VHL expression was noted in majority of the specimens that leads to the development of RCC. Smoking has been found to be statistically significant in tumors that retain VHL expression which may contributes to more aggressive form of tumor. Association between rT staging, nature of lesion and cut surface, HPE type, pT staging, HPE grade, necrosis and lympho-vascular invasion were also found to be statistically significant.

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