P11.23.B Neurological symptoms independently associate with overall survival in patients with melanoma brain metastases

Background

Based on the the rising detection of asymptomatic brain metastases (BM) and the remarkable intracranial responses of targeted- and immunotherapy in specific subgroups of asymptomatic BM patients, we aimed to evaluate the clinical characteristics and prognostic value of neurological symptoms in BM from melanoma.

Material and Methods

670 patients with newly diagnosed melanoma BM were identified from the Vienna Brain Metastasis Registry. We performed retrospective chart review and statistical outcome analyses.

Results

370/670 (55.2%) patients presented with neurological symptoms including neurological deficits (316/370; 85.4%), signs of increased intracranial pressure (126/370; 34.1%) and epileptic seizures (53/370; 14.3%). 57.6% (80/139) of patients with BRAF mutated melanoma presented with asymptomatic BM at diagnosis. Absence of neurological symptoms at BM diagnosis was associated with a longer median overall survival after time of BM diagnosis (7 vs. 5 months; p< 0.001; log-rank test). In multivariate analysis with the diagnosis-specific graded prognostic assessment (DS-GPA: HR:1.4; 95% CI, 1.25-1.48; p<0.001) and the graded prognostic assessment for melanoma using molecular markers (Melanoma-molGPA: HR:0.8; 95% CI, 0.66 -0.92; p<0.001), the presence of neurological symptoms (HR 0.8; 95% CI, 0.69 -0.96; p=0.003/ HR:0.6; 95% CI, 0.59-0.72; p<0.001) was found to be independently associated with survival prognosis from time of BM diagnosis respectively.

Conclusion:

Neurological symptoms at the time of BM diagnosis are an independent and strong prognostic factor in melanoma BM patients. Our results argue for the integration of neurological symptoms into the prognostic assessment of patients with BM from melanoma.

P14.03 Shifting trends and entity-specific aspects in patients with brain metastasis: real-life analysis from 6031 individuals over an observation period of 30 years

BACKGROUND

We aimed to investigate the changing clinical characteristics of patients with brain metastases (BM) over the last three decades as the foundation for modern BM specific clinical trial planning.

MATERIAL AND METHODS

6031 patients with newly diagnosed BM from different solid tumors treated between 1986–2020 were identified from the Vienna Brain Metastasis Registry.

RESULTS

The fraction of BM originating from the most common BM causing primary tumors (lung cancer, breast cancer and melanoma) was stable over the observation period from 1986–2020. BM from renal cell carcinoma, colorectal cancer and cancer of unknown primary (CUP) decreased over time (p<0.001). Synchronous diagnosis of BM and primary tumor was more frequently observed in lung cancer and CUP patients compared to breast cancer patients (p<0.001). An increasing fraction of patients presented with asymptomatic BM (1986–1999: 20.2% vs. 2010–2020: 30.4%; p<0.001), specifically in lung cancer (p<0.001), melanoma (p<0.001) and renal cell cancer (p=0.004). A decrease of neurosurgical procedures (1986–1999: 39.3% vs. 2010–2020: 20.4%) and an increase of radiation treatments (1986–1999: 56.5% vs. 2010–2020: 73.0%) and systemic therapies (1986–1999: 0.6% vs. 2010–2020: 2.4%; p<0.001) was observed. Furthermore, median overall survival significantly increased across entities (1986–1999: 5 months vs. 2010–2020: 7 months; p=0.001). Intracranial progression as the cause of death increased across entities (p< 0.001). The prognostic DS-GPA (Hazard ratio [HR] 1.42; p< 0.001) and the Lung-molGPA (HR 1.67; p<0.001) could be validated.

CONCLUSION

We observed changes of BM presentation and clinical parameters during the observation period depending on primary tumor origins. Future BM studies should follow an entity-specific approach and address the characteristics of modern BM cohorts.

[Extent and structure of data in realization of lifelong epidemiologic surveillance]

The realisation of a "medical record linkage" concept to achieve a lifelong medical surveillance requires the evaluation of the size and structure of the expected data. From this point of view the accessible health documentations of 120 persons of a small town covering the life period from birth to the age of 72 were evaluated retrospectively. The "epidemiological life report" resulting from this procedure enables the compilation of data on the reasons for utilising the health care system according to diagnostic-therapeutic and preventive aspects, and on the total number of medical expertises and paraclinical examinations. The number of data per person is considerable. In the course of a persons life he or she will come to the doctor for medical consultation about 600 times and will undergo 200 paraclinical examinations. A few aspects regarding the incidence of outpatient consultations are described in some detail.