Prognostic relevance of the neurological symptom burden in brain metastases from breast cancer
摘要
Existing prognostic models for breast cancer (BC) brain metastases (BM) overlook neurological symptoms. Thus, we explored the incidence and prognostic relevance of neurological symptoms in a real-world cohort of BC patients with BM.
MethodsThe Vienna Brain Metastasis Registry identified BC patients with BM between 1992 and 2020, categorised by subtype: hormone receptor-positive/human epidermal growth factor receptor 2-negative (HR+/HER2−), HER2 overexpressing (HER2+), and triple-negative (TN).
ResultsA total of 716 patients with BM from BC were included. In total, 80% (573/716) of the patients presented with neurological symptoms at BM diagnosis. Across all BC subtypes, asymptomatic patients presented with a significantly longer median OS from diagnosis of BM compared to symptomatic patients (p < 0.05; log-rank test; HR+ BC 29 vs. 9 months; HER2+ BC 24 vs. 12 months; TN 12 vs. 6 months). In multivariate analysis with the BC-specific Graded Prognostic Assessment (Breast-GPA: HR:1.4; 95% CI:1.3–1.5; p < 0.001), the presence of neurological symptoms at diagnosis (HR:1.6; 95% CI: 1.4–1.9; p < 0.001) presented as independently associated with OS from time of BM diagnosis, respectively.
ConclusionsNeurological burden at BM diagnosis independently predicts survival in BC patients. Our findings emphasise incorporating the symptom status in the prognostic evaluation and reassessing BM screening in high-risk patients during prospective clinical trials.