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Mutational heterogeneity in non-serous ovarian cancers.

Abstract：

:Epithelial ovarian cancer is a leading cause of death in gynecological cancers. While several systematic studies have revealed the mutation landscape of serous epithelial ovarian cancer, other non-serous subtypes of the disease have not been explored as extensively. Here we conduct exome sequencing of nine non-serous epithelial ovarian tumors (six endometrioid and three mucinous) and their corresponding normal DNA as well as a tumor-only granulosa cell sample. We integrated the exome data with targeted gene sequencing for 1,321 genes selected for their involvement in cancer from additional 28 non-serous ovarian tumors and compared our results to TCGA ovarian serous cystadenocarcinoma and uterine corpus endometrial carcinomas. Prevalence of TP53 mutations in non-serous was much lower than in serous epithelial OC, whereas the prevalence of PIK3CA, PIK3R1, PTEN, CTNNB1, ARID1A, and KRAS was higher. We confirmed the high prevalence of FOXL2 and KRAS mutations in granulosa cell tumors and in mucinous tumors, respectively. We also identified POLE proofreading domain mutations in three endometrioid ovarian tumors. These results highlight mutational differences between serous and non-serous ovarian cancers, and further distinguish different non-serous subtypes.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Teer JK,Yoder S,Gjyshi A,Nicosia SV,Zhang C,Monteiro ANA

doi

10.1038/s41598-017-10432-9

subject

Has Abstract

pub_date

2017-08-29 00:00:00

pages

9728

issue

1

issn

2045-2322

pii

10.1038/s41598-017-10432-9

journal_volume

7

pub_type

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