COVID-19 is an emerging, rapidly evolving situation.
Get the latest public health information from CDC:

Get the latest research information from NIH: Menu

The Expression and Effect of Cyr61 in Urinary Tract Transitional Cell Carcinoma

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01189838
Recruitment Status : Unknown
Verified January 2010 by Far Eastern Memorial Hospital.
Recruitment status was:  Recruiting
First Posted : August 27, 2010
Last Update Posted : October 7, 2010
Information provided by:
Far Eastern Memorial Hospital

Brief Summary:
Cysteine-rich 61 (Cyr61), a member of "CCN" family, regulates cell migration, proliferation, apoptosis, and angiogenesis, cell adhesion, migration, proliferation, survival, differentiation, apoptosis, angiogenesis, and extracellular matrix production. Evidences show strong correlations of aberrant Cyr61 expression in cancers of numerous organs and tissues. However, the expression and effect of Cyr61 in transitional cell carcinoma (TCC), the most common urinary tract cancer in Taiwan, remains undiscovered. Based on previous studies of Cyr61 in other cancer, the investigators hypothesize that Cyr61 may mediate TCC cell proliferation and migration; and associated with disease progression and recurrent. Thus the investigators conduct this project to study the role of Cyr61 in the pathogenesis of TCC. The investigators will retrospectively review medical history of patients with TCC treated at our institutes. Cyr61 immunohistochemical stain of their surgical samples will be performed. The correlation of Cyr61 expression of TCC and patients' clinical courses will be investigated.

Condition or disease
Carcinoma, Transitional Cell

Detailed Description:
  1. Patients: as shown in inclusion criteria
  2. Surgical samples Surgical specimens from included patients with TCC who underwent surgery will be collected. The samples will be examined histologically for the presence of tumor cells. Independent pathologists who are blinded to the records of the patients will perform histological examinations. Tumor grade is determined on the basis of cytological features. There are three grades of TCC, as proposed by Mostofi et al. and adopted by the American Bladder Tumor Registry of the World Health Organization. These are based on degree of anaplasia: Grade 1 tumors show mild cytological atypia and rare mitosis; Grade 2 tumors show moderate cytological atypical and the presence of mitotic figures; and Grade 3 tumors show severe cytological atypia and frequent mitotic figures. Lymph node metastasis, lymphatic invasion, and venous invasion will be evaluated by pathology reports and image study. Clinical staging of TCC is based on the American Joint Committee on Cancer staging (AJCC) TNM system.
  3. Immunohistochemical stain Paraffin-embedded, formalin-fixed surgical specimens were collected for Cyr61 immunohistochemical staining. Heat-induced epitope retrieval will be performed with a pressure cooker and TRIS buffer (pH 9.0) for 2 min. They will be allowed to cool for 15 min, rinsed in distilled water twice and in PBS for 5 min. The sections will then be treated with 0.5% hydrogen peroxidase/PBS for 20 min at room temperature to block the endogenous peroxidase. They will subsequently be blocked with 10% normal goat serum for 30 min at room temperature, and then incubated with polyclonal anti-Cyr61 antibody (Santa Cruz, CA) at 4°C overnight. The specific antibodies will be omitted in sections as negative controls. The sections will be washed three times in PBS/0.2% Triton X-100 for 10 min and incubated with biotin-conjugated secondary antibodies (DAKO, Carpinteria, CA) for 1 hour at room temperature the following day. They will then be incubated with the avidin-biotin-peroxidase reagent (DAKO) for another 1 hour at room temperature. After three washes in PBS/0.2% Triton X-100 for 10 min each, the reactions on sections will be detected with peroxidase substrate containing diaminobenzidine chromagen (DAKO). The slides will be counterstained with hematoxylin. If >50% of the tumor cells are positively stained, the specimen will be grouped as "positive". All other staining results will be regarded as negative.
  4. Statistical analysis For statistical analysis, P values are based on two-sided, parametric Student's t tests. A P value of <0.05 on the basis of at least three independent sets of experiments is considered to be statistically significant. In the clinical sets of project, Chi-squire test and Student's t test will be used to study the association of Cyr61 expression with single clinical factors (age, gender, pathology, and grade). Kaplan-Meier survival curves for patients with positive versus negative Cyr61 expression will be plotted and log-rank test will be used for comparing the equality of the two survival curves. Cox proportional hazard model will also be developed to correlate the clinical characteristics, survival, and the expression of Cyr61.

Layout table for study information
Study Type : Observational
Estimated Enrollment : 100 participants
Observational Model: Case-Only
Time Perspective: Retrospective
Official Title: The Expression and Effect of Cyr61 in Urinary Tract Transitional Cell Carcinoma
Study Start Date : January 2010
Estimated Primary Completion Date : December 2010
Estimated Study Completion Date : December 2010

Resource links provided by the National Library of Medicine

Low Cyr61
Low Cyr61 immunohistochemical stain in patients' TCC tumor
High Cyr61
High Cyr61 immunohistochemical stain in patients' TCC tumor

Primary Outcome Measures :
  1. Patient survival [ Time Frame: 5 year ]

Biospecimen Retention:   Samples With DNA
Surgical resection of tumor

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   18 Years to 90 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population
We will retrospectively review adult patients (age>18 years) with TCC who received surgery at Far Eastern Memorial Hospital and National Taiwan University Hospital from 2004 to 2008.

Inclusion Criteria:

  • All adult patients (age>18 years) with TCC who received surgery at Far Eastern Memorial Hospital and National Taiwan University Hospital from 2004 to 2008.

Exclusion Criteria:

  • Refuse to participate.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01189838

Layout table for location contacts
Contact: Chun-Fu Lai, M.D. +886-2-89667000 ext 1163

Layout table for location information
Far Eastern Memorial Hospital Recruiting
Banciao City, Taipei, Taiwan, 220
Contact: Chun-Fu Lai, M.D.    +886-2-89667000 ext 1163   
Sponsors and Collaborators
Far Eastern Memorial Hospital
Layout table for investigator information
Principal Investigator: Chun-Fu Lai, M.D. Far Eastern Memorial Hospital

Layout table for additonal information Identifier: NCT01189838    
Other Study ID Numbers: 098055-3
First Posted: August 27, 2010    Key Record Dates
Last Update Posted: October 7, 2010
Last Verified: January 2010
Keywords provided by Far Eastern Memorial Hospital:
cysteine-rich 61
transitional cell carcinoma
Additional relevant MeSH terms:
Layout table for MeSH terms
Carcinoma, Transitional Cell
Neoplasms, Glandular and Epithelial
Neoplasms by Histologic Type