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DNA Methylation Urine Biomarkers Test in the Diagnosis of Upper Tract Urothelial Carcinoma: Results from a Single-Center Prospective Clinical Trial.

Authors
  • Territo, Angelo1
  • Gallioli, Andrea1
  • Diana, Pietro1, 2
  • Boissier, Romain1, 3
  • Fontana, Matteo1
  • Gaya, Josep Maria1
  • Sanguedolce, Francesco1
  • Calderón, Julio1
  • Piana, Alberto1
  • Fontanet, Sofia1
  • Algaba, Ferran4
  • Palou, Joan1
  • Breda, Alberto1
  • 1 Fundació Puigvert, Department of Urology, Autonomous University of Barcelona, Barcelona, Spain. , (Spain)
  • 2 Department of Urology, Humanitas Research Hospital - IRCCS, Rozzano, Italy. , (Italy)
  • 3 Aix-Marseille University, Department of Urology, APHM, Louisiana Conception Academic Hospital, Marseille, France. , (France)
  • 4 Fundació Puigvert, Department of Pathology, Autonomous University of Barcelona, Barcelona, Spain. , (Spain)
Type
Published Article
Journal
The Journal of urology
Publication Date
May 12, 2022
Identifiers
DOI: 10.1097/JU.0000000000002748
PMID: 35549312
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

The correct risk categorization and staging of upper tract urothelial cancer (UTUC) is key for disease management. Computed tomography urography (CTU) and urinary cytology have limited accuracy for risk stratification of UTUC. Ureteroscopy may increase the risk of bladder recurrence. Recently, Bladder EpiCheckTM (EpiCheck) showed a high accuracy in the detection of bladder cancer. The aim of the study is to investigate the diagnostic accuracy of EpiCheck in the clinical management of UTUC and to compare it with urinary cytology. In this single-arm blinded prospective single-center study (02/2019-12/2020), all patients candidates to ureteroscopy for suspicion of UTUC were included. Bladder and upper urinary tract (UUT) samples were collected before ureteroscopy to test for cytology and Epicheck. EpiCheck accuracy was calculated in bladder and UUT samples and compared to cytology. EpiCheck resulted diagnostic in 83/86 (97%) and 73/75 (97%) of UUT and bladder samples. Histology was positive in 47/83 (57%) and 42/73 (58%) cases, respectively. In UUT samples, EpiCheck yielded a sensitivity/specificity/NPV/PPV of 83/79/77/84% vs 59/88/61/87% of cytology. The sensitivity/NPV for high-grade tumors was 96%/97% for EpiCheck vs 71%/86% for cytology. EpiCheck indicated ureteroscopy in 45/80 (56%) patients, missing 17%/4% of all/high-grade UTUC with 9% of unnecessary URS. In bladder samples, the sensitivity/NPV for high-grade tumors was 71/88% for EpiCheck and 59%/87% for cytology. Epicheck may be an important tool to decrease number of unnecessary URS. The clinical implementation of EpiCheck in UTUC warrants further investigation in multicentric prospective randomized trials.

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