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Expert Identifies Biggest Shifts in Ovarian Cancer Paradigm

Caroline Seymour
Published: Monday, Nov 26, 2018

Jonathan S. Berek, MD, MMS

Jonathan S. Berek, MD, MMS

The field of ovarian cancer has significantly evolved since the International Federation of Gynecologists and Obstetricians (FIGO) revised the staging system to account for the heterogeneity in epithelial tumors that arise from the ovaries, fallopian tubes, or peritoneum.

on Ovarian Cancer, Berek, the Laurie Kraus Lacob Professor at Stanford Medicine, director of the Stanford Women’s Cancer Center, and senior advisor at Stanford Cancer Institute, outlined the changing paradigm of ovarian cancer.

OncLive®: What genes predispose individuals to ovarian cancer?

Berek: Carrying a germline mutation is a risk factor for developing the disease. However, that is something that we can better detect now based on family history [and the rise in] testing. We're testing everybody who comes to the center with a diagnosis of ovarian cancer for any genetic background, so that they have the information [to inform] potential treatment with PARP inhibitors or to advise their family.

What are the various histopathologies of this disease?

The most common type is high-grade serous carcinoma (HGSC). The treatments vary to some extent based on the different types of histology. At this point, there are probably not enough specific targeted therapy to allocate based on [histology]. For example, we treat mucinous tumors differently. Recently, there has been an effort to treat patients with endometrioid clear cell [carcinoma] somewhat differently. We're treating low-grade serous carcinomas differently than we do HGSC. HGSC makes up about 85% of all ovarian, fallopian tube cancers; they're the ones that are responsive to PARP inhibitors.

Have there been any updates to the staging system?

Yes and no. The last one was made in 2014. The main change was that we no longer stage ovarian cancer. We call it ovarian, fallopian tube, and peritoneal cancer because it's really all one disease.

What agents did you highlight in your presentation? Which ones have made the biggest shift in treatment?

I introduced the subject of the PARP inhibitors and the angiogenesis blockers, as well as early trials with immune therapies.
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