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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT05362539
Other study ID # AS-4-2022
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date February 1, 2019
Est. completion date April 1, 2022

Study information

Verified date April 2022
Source Mansoura University
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The current study aimed to assess the diagnostic performance of novel urine-based DNA hypermethylation of six genes (GATA4, P16, P14, APC, CDH1 and CD99) for UBC detection in patients with hematuria.


Description:

According to GLOBOCAN data, bladder cancer (BC) is considered a major health problem that represents 3% of all cancer diagnoses. Urothelial bladder carcinoma (UBC) accounts for the vast majority (>90%) of BC cases with predominance of non-muscle invasive disease (Ta, Tis or T1) in 75% of patients while others show muscle invasion (T2-4). In refereed population, UBC is usually diagnosed as a result of work-up for hematuria at a rate of 2-5% following an evaluation of asymptomatic microscopic hematuria, and, up to 5-15% of patients with macroscopic hematuria. Therefore, a timely prompt evaluation of hematuria can give to earlier diagnosis and better survival of UBC. Currently, cystoscopy /cross sectional imaging are the gold standard tools for UBC diagnosis in patients with hematuria. Unfortunately, these costly, invasive and painful diagnostics could miss early, small/flat bladder lesions. Urine cytology has been proposed as a non-invasive alternative test with high specificity, however, it lacks sensitivity for diagnosis of low grade (LG) tumors. Over the last decades, multiple researches have output different markers for UBC diagnosis. Based on their target of assessment, these markers include screening for soluble antigens (BTA-Stat, NMP-22, surviving, etc.), cell surface antigens (Cytokeratins and UroVysion), genomic markers (Cxbladder and Xpert) and urinary metabolomics (CRAT and SLC25A20). However, most of these markers are limited by unsatisfying diagnostic performance, high cost or lack of validation. Several preliminary studies have shown that DNA methylation, a critical step in transcription regulation, is chemically stable and can be precisely quantified, making it an attractive marker for UBC detection. Both local and global DNA hypermethylation in BC specimens are usually associated with inactivation of tumor suppressor genes. These methylations changes could be effectively identified in urine sediments as well as tumor tissues. In the current literature, multiple studies investigated the performance of DNA hypermethylation of either individual or panel genes with reported sensitivity (SN) and specificity (SP) values that range from 40-95 % and 10-100 %, respectively. Most of these studies were limited by tumor characteristics heterogeneity (majority were ≥T2 and high grade (HG) disease; which did not reflect the daily practice, inclusion of different BC histological variants), lack of external validation and small sample size. The aim of our study is to assess the diagnostic performance of novel urine-based DNA methylation six genes (GATA4, P16, P14, APC, CDH1 and CD99) for UBC detection in patients with hematuria. Moreover, we investigated the methylation pattern of these genes in different stages and grades of UBC.


Recruitment information / eligibility

Status Completed
Enrollment 246
Est. completion date April 1, 2022
Est. primary completion date June 1, 2021
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria: - patients with hematuria (macroscopic or microscopic) Exclusion Criteria: - history of Bladder Cancer - history of pelvic irradiation, - bleeding diathesis or receiving anticoagulants - patients with upper urinary tract neoplasm or urolithiasis

Study Design


Intervention

Procedure:
Cystoscopy
diagnostic cystoscopy for detection of any bladder lesions
Diagnostic Test:
Computed tomography
Computed tomography for patients to exclude bladder lesions
Genetic:
DNA hypermethylation assay
DNA hypermethylation assay of six genes (GATA4, P16, P14, APC, CDH1 and CD99)
Diagnostic Test:
Urine cytology
voided urine cytology for all patients

Locations

Country Name City State
Egypt Mansoura Urology and Nephrology Center Mansoura DK

Sponsors (1)

Lead Sponsor Collaborator
Mansoura University

Country where clinical trial is conducted

Egypt, 

Outcome

Type Measure Description Time frame Safety issue
Primary Rate of hypermethylation of six genes (GATA4, P16, P14, APC, CDH1 and CD99) in patients with urothelial bladder carcinoma Rate of hypermethylation of six genes (GATA4, P16, P14, APC, CDH1 and CD99) in patients with urothelial bladder carcinoma 4 weeks
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