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Pathological discrimination between luteinized thecoma associated with sclerosing peritonitis and thecoma
1Department of Obstetrics & Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Hubei Province, China.
Medicine
|June 19, 2023
Summary
Six molecular markers, including MGAT5B, NCOA3, MKI67, β-Catenin, CD99, and WT1, effectively distinguish luteinized thecoma associated with sclerosing peritonitis (LTSP) from thecoma. The study also identified a novel MGAT5B-NCOA3 fusion gene in LTSP.
Area of Science:
- Gynecologic Pathology
- Molecular Oncology
- Ovarian Tumorigenesis
Background:
- Luteinized thecoma associated with sclerosing peritonitis (LTSP) shares similarities with thecoma, complicating clinical diagnosis.
- Distinguishing between LTSP and thecoma is crucial for accurate patient management and treatment strategies.
Purpose of the Study:
- To identify molecular pathological markers that can effectively differentiate between LTSP and thecoma.
- To investigate the potential role of the MGAT5B-NCOA3 fusion gene in LTSP.
Main Methods:
- Immunohistochemistry was used to analyze the expression of 10 molecular markers in 102 ovarian tumor cases (11 LTSP, 91 thecoma).
- Whole-exome sequencing and fluorescence in situ hybridization were employed to detect the MGAT5B-NCOA3 fusion gene.
- Statistical analyses, including t-tests and ANOVA, were performed to assess marker significance.
Main Results:
- Six markers demonstrated significant discriminatory power: MGAT5B, NCOA3, MKI67, and β-Catenin were upregulated, while CD99 and WT1 were downregulated in luteinized cells of LTSP.
- The MGAT5B-NCOA3 fusion gene was identified in LTSP, showing significantly higher expression compared to thecoma.
Conclusions:
- The study successfully validated six molecular markers for differentiating LTSP from thecoma.
- Identification of the MGAT5B-NCOA3 fusion gene in LTSP provides a novel diagnostic and potentially therapeutic target.
- These findings will aid clinicians in accurate differential diagnosis and treatment of ovarian sex cord-stromal tumors.
