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Prevalence of abnormal microsatellite instability test among ovary and endometrial cancer patients

Date

23 Nov 2019

Session

Poster display session

Presenters

Min Kyu Kim

Citation

Annals of Oncology (2019) 30 (suppl_9): ix122-ix130. 10.1093/annonc/mdz431

Authors

M.K. Kim

Author affiliations

  • Obstetrics And Gynecology, Samsung Changwon Hospital Sung Kyun Kwan University, 630-723 - Changwon/KR
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Resources

Background

Microsatellite instability (MSI)test has been found and developed with relationship of HNPCC or Lynch syndrome. Its role has been extended from screening marker for Lynch syndrome detection to response marker for immune checkpoint therapy. We investigated to know prevalence of abnormal microsatellite instability (MSI-L/H) among endometrial cancer ovary cancer.

Methods

We identified 51 cases of MSI samples from ovary and endometrial cancer visiting hereditary gynecologic cancer center.

Results

We found 34 ovary cancer ,13 endometrial cancer and 4 colon cancer patients. Median age was 56.6(18∼78). About thirty percent have family cancer history among patient relatives (14/45(31.1%)). Early stage cancer (I∼II) (4/25,16.0%) have higher incidence than late stage cancer (III∼IV) (2/28,7.1%). Abnormal MSI have three serous type and endometrioid type pathology. Among abnormal MSI, we found two MSI-L and four MSI-H (6/51(11.8%)). We found one MSI-H ovary cancer ,3 MSI-H endometrial cancer patients (1/34(2.9%),3/13(23.1%)).

Conclusions

There are about 10 percent of abnormal MSI in this study group. Prospective large clinical study is needed for hereditary cancer prevention and precision medicine.

Clinical trial identification

Editorial acknowledgement

Legal entity responsible for the study

The author.

Funding

Has not received any funding.

Disclosure

The author has declared no conflicts of interest.

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