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- W2594933426 abstract "10536 Background: Brain metastases (BM) have evolved from a rare to a frequently encountered event in advanced breast cancer (ABC) due to advances in palliative systemic treatment. Especially since the introduction of trastuzumab, different groups reported an increased incidence of BM. In this study, we retrospectively tried to establish factors predicting a prolonged survival in those patients (P). Methods: All P treated at our centre from 1994 to 2004 with whole brain radiotherapy for BM from ABC were included. Cerebral time to progression (cTTP) and overall survival (OS) were calculated using the Kaplan-Meier product limit method. A multivariate analysis (Cox regression) was performed to explore which factors are able to influence significantly cTTP and OS (metastatic sites [visceral versus non-visceral], Karnofsky performance score [KPS], age, intensified local treatment [boost irradiation, neuro-surgical resection], further palliative systemic treatment). Results: Overall 174 P, median age 51 years (y), range 27–76 y, were included. Median cTTP was 3 months (m), range 1–33+ m (95% CI 4.67–7.37). Median OS was 7 m, range 1–44 m (95% CI 5.08– 8.92). Factors significantly influencing cTTP were KPS (p = 0.0024), intensified local treatment (p < 0.0001), and palliative systemic treatment (P = 0.0003). Factors significantly influencing OS were intensified local treatment (p = 0.004), metastatic sites (p = 0.008), KPS (p = 0.006), and palliative systemic treatment (p < 0.001). Conclusion: As shown by the significant influence of metastatic sites, some P die from their advanced systemic disease situation before they would experience cerebral progression, in part explaining the influence of systemic treatment. In other individuals however, intensified local treatment and systemic treatment appear to influence both cTTP and OS significantly, implicating a direct influence of systemic therapy on BM. This might result from an impaired blood brain barrier around metastatic sites, making sufficient tissue concentrations of cytotoxic agents possible. No significant financial relationships to disclose." @default.
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- W2594933426 date "2006-06-20" @default.
- W2594933426 modified "2023-09-24" @default.
- W2594933426 title "Intensified local treatment and systemic therapy significantly increase time to progression and survival in patients with brain metastases from advanced breast cancer" @default.
- W2594933426 doi "https://doi.org/10.1200/jco.2006.24.18_suppl.10536" @default.
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