Ovarian cancer in BRCA1 and BRCA2 gene mutation carriers: analysis of prognostic factors and survival

OBJECTIVES: To compare clinical-pathological characteristics and outcome between sporadic ovarian cancer and ovarian cancer in patents with hereditary breast and ovarian cancer syndrome (HBOC). METHODS: Twenty-four patients with ovarian cancer treated between 2000 and 2009 who tested positive for BRCA1/2 mutation (BRCA+) and a control group of 64 age-matched patients with no family history of breast/ovarian cancer (controls) were enrolled. Clinical-pathological characteristics, surgical outcome, overall (OS), and progression-free survival (PFS) were compared between the two groups. RESULTS: The high-grade serous histotype was more represented in BRCA+ than in controls (70.8% versus 53.1%) (p > 0.05). BRCA+ cancers were more frequently diagnosed at stage II than controls (20.83% versus 4.69%) (p = 0.024). Radical primary surgery was performed in 70% of women in both groups, with no difference in debulking results. In patients undergoing surgery after neoadjuvant chemotherapy, in all BRCA+ patients, optimal cytoreduction was achieved (versus 70% of the controls). PFS was significantly longer for BRCA+ patients compared to controls (60 months versus 22 months; p = 0.039). No significant difference was observed in OS between BRCA+ patients and controls. CONCLUSIONS: At a median follow-up time of 46 months, BRCA+ patients have a better prognosis than controls in terms of PFS. Higher chemosensitivity of BRCA+ tumours was observed.