Molecular analysis in endometrial cancer

Area of Science:

• Gynecologic Oncology
• Molecular Oncology
• Cancer Genomics

Background:

• Endometrial carcinoma development involves largely uncharacterized molecular events.
• Endometrial cancers are linked to hereditary nonpolyposis colorectal cancer syndrome.
• Ovarian and endometrial cancers can be histologically homologous, suggesting shared molecular pathways.

Purpose of the Study:

• To investigate molecular mechanisms in endometrial carcinoma.
• To compare molecular alterations in endometrial carcinoma with those in colon and ovarian carcinomas.
• To determine if uterine papillary serous carcinoma (UPSC) and uterine endometrioid carcinoma (UEC) share molecular features with their ovarian counterparts.

Main Methods:

• Analysis of Ki-ras codon 12 mutations.
• Assessment of microsatellite instability.
• Immunohistochemical evaluation of p53 and c-erb B-2 expression.
• Detection of allelic loss on chromosome 17q.

Main Results:

• Molecular mechanisms in endometrial carcinoma are distinct from colorectal carcinomas.
• Uterine papillary serous carcinomas exhibit molecular similarities with ovarian papillary serous carcinomas.
• Uterine endometrioid carcinomas show molecular differences compared to ovarian endometrioid carcinomas.
• Distinct molecular profiles differentiate uterine endometrioid and papillary serous carcinomas.

Conclusions:

• Endometrial carcinoma progression involves unique molecular mechanisms.
• Uterine papillary serous carcinoma and ovarian papillary serous carcinoma share common molecular alterations.
• Uterine endometrioid carcinoma and ovarian endometrioid carcinoma have divergent molecular profiles.
• Molecular analysis provides a basis for distinguishing between uterine endometrioid and papillary serous carcinoma subtypes.