Chromosomal Abnormality, Diagnoses Disease, Urine Marking, Urothelial Carcinoma
Conditions
Keywords
Urothelial Carcinoma, diagnosis, Chromosomal Aneuploidy Detection, marker, urine
Brief summary
Chromosomal instability (CIN) refers to ongoing chromosome segregation errors throughout consecutive cell divisions. CIN is a hallmark of human cancer, and it is associated with poor prognosis, metastasis, and therapeutic resistance. Analyzing CIN of the DNA extracted from urothelial cells in urine samples seems a promising method for diagnosing, monitoring, and predicting the prognosis of bladder cancer patients. CIN can be assessed using experimental techniques such as bulk DNA sequencing, fluorescence in situ hybridization (FISH), or conventional karyotyping. However, these techniques are either time-consuming or non-specific. We here intend to study whether a new method named Ultrasensitive Chromosomal Aneuploidy Detection (UCAD), which is based on low-coverage whole-genome sequencing, can be used to analyze CIN thus help diagnosing and treating bladder cancer patients.
Detailed description
CIN results from errors in chromosome segregation during mitosis, leading to structural and numerical chromosomal abnormalities. It will generate genomic heterogeneity that acts as a substrate for natural selection. Furthermore, it is proved that tumors with aneuploidies and polyploidy resulting from whole-genome doubling are related with metastasis, treatment resistance, and decreased overall survival. It is estimated that 60%-80% of human tumors exhibit chromosomal abnormalities suggestive of CIN. CIN positively correlates with tumor stage and is enriched in relapsed as well as metastatic tumor specimens. Due to the ubiquity of CIN in cancer cells, it is a potentially non-invasive way to detect CIN in the urothelial cells from the urine sample for diagnosing and monitoring bladder cancer patients. UCAD is a new method to detecting CIN in the DNA sample from patients, including extracting DNA from urine, analyzing DNA by low-coverage whole-genome sequencing, processing the data by bio-information techniques, and finally optimizing the management of bladder cancer patients. The investigators intended to conduct a prospective study by analyzing urine samples from bladder cancer patients and control groups that without any tumor in the urinary system or other organs to compare the specificity and sensitivity of UCAD test for diagnosing urothelial carcinoma to other modalities, such as urine cytology or fluorescence in situ hybridization (FISH).
Interventions
DIAGNOSTIC_TESTLow-coverage whole-genome sequencing of urine exfoliated cells
The level of CIN The extracted DNA from morning urine will be analyzed by UCAD to determine the level of CIN.
Sponsors
Changhai Hospital
Study design
Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Inclusion criteria
* Patients diagnosed with urothelial carcinoma and planned to undergo surgery. * Participants without any tumor disease and willing to attend the study by providing morning urine. * Male or female patients aged \>= 18 years. * Participants signed informed consent form.
Exclusion criteria
* Age under 18 years * Individuals unwilling to sign the consent form or unwilling to provide morning urine for test or unwilling to provide the medical record. * Individuals unwilling to participate in this trial.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Sensitivity of urinalysis by UCAD analysis | Up to 1 years | Number of patients declared positive with the UCAD test among the patients suffered from urothelial carcinoma. |
| Specificity of urinalysis by UCAD analysis | Through study completion, an average of 12 months | Number of patients declared negative with the UCAD test among the patients without cancer. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Comparison of the sensitivity of the UCAD analysis versus urine cytology | Up to 1 years | Number of patients declared positive with the UCAD analysis versus patients declared positive with the urine cytology. |
| Comparison of the specificity of the UCAD analysis versus urine cytology | Up to 1 years | Number of patients declared negative with the UCAD analysis versus patients declared negative with the urine cytology. |
Other
| Measure | Time frame | Description |
|---|---|---|
| Identification of the correlation between the level of CIN and the grade of the tumor sample | Up to 1 years | Level of CIN in the urine sample compared with the grade of the tumor confirmed by histopathologic examination |
| Identification of the correlation between the level of CIN and the stage of the tumor sample | Up to 1 years | Level of CIN in the urine sample compared with the stage of the tumor confirmed by histopathologic examination. |
Countries
China
Contacts
Primary ContactShuxiong zeng, M.D., Ph.D
Outcome results
None listed