Mesothelin as a New Tumor Marker for Ovarian Cancer

The recruitment status of this study is unknown because the information has not been verified recently.
Verified October 2001 by National Taiwan University Hospital.
Recruitment status was  Recruiting
Sponsor:
Information provided by:
National Taiwan University Hospital
ClinicalTrials.gov Identifier:
NCT00155740
First received: September 9, 2005
Last updated: November 25, 2005
Last verified: October 2001
  Purpose

Ovarian cancer became a more and more important disease in recent years due to its first mortality rate of gynecologic malignancies. The incidence of ovarian cancer also increased in recent year in Taiwan. The lack of symptoms, difficulties in early diagnosis, insufficient accurate tumor markers, and lack of information about ovarian tumor biology contribute to the poor prognosis in ovarian cancer patients. The prognostic parameters for ovarian carcinomas are tumor stage, histologic subtype, degree of malignancy, and residual tumor after surgical treatment. However, these factors present an incomplete picture of the tumor biology of ovarian cancer and are frequently interrelated. Thus, the identification of new biologic factors predictive of individual disease course and prognosis would be extremely useful.

Detection of tumor markers that are released into the circulation can aid in the diagnosis and/or monitoring of therapeutic responses of patients with various tumors, including carcinomas of ovary. CA125 is the most commonly used serum marker for patients with ovarian carcinoma. Although it has proven clinically valuable in monitoring the response of patients to therapy, some ovarian carcinomas do not express CA125, and CA125 often is increased in patients with inflammatory disease. Thus, there is a need for improvement, either in the form of a more specific and/or sensitive assay or an assay that uses a different marker and can be used to complement CA125 toward the goal to improve patient survival by improving diagnosis.

Mesothelin is a 40-kDa glycosylphosphatidylinositol-linked glycoprotein. In normal tissues, the expression of mesothelin has subsequently been shown to be largely restricted to mesothelial cells, although immunoreactivity has also been reported in epithelial cells of the trachea, tonsil, fallopian tube, and kidney. Mesothelin has been shown to be over-expressed in pancreatic carcinomas, gastric carcinoma and ovarian carcinoma, and it seems that mesothelin may be utilized as a new tumor marker for ovarian carcinoma. We will evaluate that if mesothelin can be a new potential tumor marker for ovarian cancer in this proposal.


Condition
Ovarian Cancer

Study Type: Observational
Study Design: Observational Model: Defined Population
Primary Purpose: Screening
Time Perspective: Longitudinal

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Further study details as provided by National Taiwan University Hospital:

Estimated Enrollment: 250
Study Start Date: January 2002
Estimated Study Completion Date: December 2006
Detailed Description:

Incidence of Ovarian Cancer Ovarian cancer is the first mortality rate of gynecologic malignancies (1-3) and became a more and more important disease in recent years (4-6). The incidence of ovarian cancer also increased in recent year in Taiwan (7). Ovarian cancer has the highest mortality of all gynecological cancers, with an overall 5-year survival rate of only 20–30% (1). The lack of symptoms, difficulties in early diagnosis, insufficient accurate tumor markers, and lack of information about ovarian tumor biology contribute to the poor prognosis in ovarian cancer patients (8). The prognostic parameters for ovarian carcinomas are tumor stage, histologic subtype, degree of malignancy, and residual tumor after surgical treatment (9-12). However, these factors present an incomplete picture of the tumor biology of ovarian cancer and are frequently interrelated (13). Thus, the identification of new biologic factors predictive of individual disease course and prognosis would be extremely useful. From the above-mentioned data, ovarian cancer indeed is a disease that should be respected, however, there were only few of research work focusing on it in Taiwan.

Tumor marker for ovarian cancer Detection of tumor markers that are released into the circulation can aid in the diagnosis and/or monitoring of therapeutic responses of patients with various tumors, including carcinomas of ovary (14-17), prostate (18), the gastrointestinal tract (19, 20), or breast (21). CA125 is the most commonly used serum marker for patients with ovarian carcinoma (14). Although it has proven clinically valuable in monitoring the response of patients to therapy, some ovarian carcinomas do not express CA125, and CA125 often is increased in patients with inflammatory disease. Thus, there is a need for improvement, either in the form of a more specific and/or sensitive assay or an assay that uses a different marker and can be used to complement CA125 toward the goal to improve patient survival by improving diagnosis.

New potential molecule as tumor marker for ovarian cancer Mesothelin is a 40-kDa glycosylphosphatidylinositol-linked glycoprotein. It is synthesized as a precursor of molecular mass 69 kDa, which then is proteolytically processed into an N terminal secreted form of molecular mass 30 kDa and a membrane-bound form of 40 kDa (22, 23). The 30-kDa secreted form has been termed megakaryocyte potentiating factor (23). In normal tissues, the expression of mesothelin has subsequently been shown to be largely restricted to mesothelial cells, although immunoreactivity has also been reported in epithelial cells of the trachea, tonsil, fallopian tube, and kidney (24). Mesothelin has been shown to be expressed in pancreatic carcinomas(25), gastric carcinoma (26) and ovarian carcinoma (27), and it seems that mesothelin may be utilized as a tumor marker for ovarian carcinoma.

We will evaluate the amount of mesothelin in pre- and post-treatment serum samples of patients with epithelial ovarian cancer. We will also correlate the clinicopathologic items and the prognosis of ovarian cancer patients and evaluate whether mesothelin can be a new rumor marker for ovarian cancer patients.

  Eligibility

Ages Eligible for Study:   15 Years to 90 Years
Genders Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

- Patients with ovarian carcinoma who undergo hysterectomy, bilateral salpingo-oophorectomy, omentectomy, and appendectomy will be enrolled and the clinical data will be obtained from our hospital. All of the patients received four to six courses of adjuvant platinum-containing chemotherapy.Histologic grading was according to International Union against Cancer criteria (28). The stage of disease was classified according to the International Federation of Gynecology and Obstetrics (FIGO, 1987). Pelvic and paraaortic lymph node samplings will be performed, if the disease will be confined to within the ovary or will be without a ruptured capsule. The histopathologic data, including histologic type and histologic grade, will be evaluated by a certified pathologist. The maximal diameter of the residual tumor after surgery will be also recorded. All patients will be followed up at 3-month intervals.

Patients with ovarian endometrioma, other benign ovarian tumors receiving surgical intervention, or healthy patients without surgical intervention will be presented as normal controls.

Exclusion Criteria:

-

  Contacts and Locations
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Please refer to this study by its ClinicalTrials.gov identifier: NCT00155740

Contacts
Contact: Chi-An Chen, MD 882-2-2312-3456 ext 5157 cachen@ha.mc.ntu.edu.tw

Locations
Taiwan
National Taiwan University Hospital Recruiting
Taipei, Taiwan
Contact: Chi-An Chen, MD    886-2-2312-3456 ext 5157    cachen@ha.mc.ntu.edu.tw   
Sponsors and Collaborators
National Taiwan University Hospital
Investigators
Principal Investigator: Chi-An Chen, MD National Taiwan University Hospital
  More Information

No publications provided

ClinicalTrials.gov Identifier: NCT00155740     History of Changes
Other Study ID Numbers: 9100201610
Study First Received: September 9, 2005
Last Updated: November 25, 2005
Health Authority: Taiwan: Department of Health

Keywords provided by National Taiwan University Hospital:
ovarian cancer
tumor marker
mesothelin

Additional relevant MeSH terms:
Ovarian Neoplasms
Endocrine Gland Neoplasms
Neoplasms by Site
Neoplasms
Ovarian Diseases
Genital Neoplasms, Female
Urogenital Neoplasms
Adnexal Diseases
Genital Diseases, Female
Endocrine System Diseases
Gonadal Disorders

ClinicalTrials.gov processed this record on October 02, 2014