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Impact of mutational status on survival in low-grade serous carcinoma of the ovary or peritoneum
Authors:David M Gershenson  Charlotte C Sun  Kwong-Kwok Wong
Institution:1.Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
Abstract:

Background:

Low-grade serous carcinoma of the ovary or peritoneum is a distinct, well- recognized histologic subtype characterized by young age at diagnosis, relative chemoresistance, and prolonged overall survival. Common mutations reported to be found within this subtype include KRAS and BRAF.

Methods:

Using clinical information of patients from our IRB-approved registry and tissue from a subset of these patients, we performed mutational analysis for KRAS and BRAF using the direct Sanger sequencing technique and correlated findings with the clinical outcome, overall survival (OS).

Results:

In 79 cases, patients with KRAS or BRAF mutations (n=21) had a significantly better OS than those with wild-type KRAS or BRAF (n=58) (106.7 months (95% CI, 50.6, 162.9) vs 66.8 months (95% CI, 43.6, 90.0)), respectively (P=0.018).

Conclusions:

Mutational status appears to be a potential prognostic factor in low-grade serous carcinoma of the ovary or peritoneum.
Keywords:ovarian cancer  low-grade serous carcinoma  KRAS  BRAF
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