[DNA Methylation on Urinalysis and As a Prognostic Marker in Urothelial Cancer of the Bladder]
Affiliations
Introduction And Objectives: Detection of promoter hypermethylation has been proposed as a promising tool for cancer diagnosis and as a prognostic marker in various cancers. We studied the versatility of DNA methylation for noninvasive diagnosis and as a prognostic marker for non-muscle-invasive bladder carcinoma.
Methods: Tumor specimens were microdissected and DNA was extracted from 105 paraffin-embedded paraffin specimens from patients undergoing transurethral resection for non-muscle-invasive bladder carcinoma. Urine specimens were collected from patients undergoing cystectomy for bladder cancer and from healthy volunteers. Methylation status was assessed with the real-time quantitative methylation-sensitive PCR (MethyLight). We checked a panel of 20 cancer-associated genes (p14ARF, p16 CDKN2A, STAT-1, SOCS-1, DR-3, DR-6, PIG-7, BCL-2, H-TERT, BAX, EDNRB, DAPK, RASSF-1A, FADD, TMS-1, E-CADHERIN, ICAM-1, TIMP-3, MLH-1, COX-2) for DNA methylation.
Results: Follow-up data were available in 95 of 105 patients (91.4%). A tumor recurrence was observed in 26 patients (27.3%). We could identify six genes (SOCS-1, STAT-1, BCL-2, DAPK, TIMP-3, E-cadherin), where methylation was associated with tumor recurrence. In Kaplan-Meier analysis, TIMP-3 showed a significant association with recurrence-free survival. Methylation of TIMP-3 predicted prolonged disease-free interval. Regarding urinalysis we could identify a pattern of methylation markers including DAPK, BCL-2, and H-TERT that yielded a sensitivity of 81.1% with a specificity of 100% in a cancer-free control population
Conclusions: We present data on the clinical usefulness of methylation analysis in bladder carcinoma. Our data confirm that methylation analysis is a promising tool for bladder cancer diagnosis and prognosis.
The Development of Non-Invasive Diagnostic Tools in Bladder Cancer.
Schulz A, Loloi J, Martina L, Sankin A Onco Targets Ther. 2022; 15:497-507.
PMID: 35529887 PMC: 9075009. DOI: 10.2147/OTT.S283891.
Trends in urine biomarker discovery for urothelial bladder cancer: DNA, RNA, or protein?.
Humayun-Zakaria N, Ward D, Arnold R, Bryan R Transl Androl Urol. 2021; 10(6):2787-2808.
PMID: 34295762 PMC: 8261432. DOI: 10.21037/tau-20-1327.
RASSF-1A modulates proliferation-mediated oral squamous cell carcinoma progression.
Sun J Cancer Cell Int. 2019; 19:213.
PMID: 31423110 PMC: 6693157. DOI: 10.1186/s12935-019-0932-9.