This phase II trial studies how well stereotactic radiosurgery works in treating patients with melanoma that has spread to more than 3 places in the brain. Stereotactic radiosurgery is a specialized radiation therapy that delivers a single, high dose of radiation directly to the tumor and may cause less damage to normal tissue.
Name: Quality-of-Life Assessment
Description: Ancillary studiesType: OtherTreatment (SRS)
Name: Questionnaire Administration
Description: Ancillary studiesType: OtherTreatment (SRS)
Name: Stereotactic Radiosurgery
Description: Undergo SRSType: RadiationTreatment (SRS)
Description: Time to local failure will be estimated using the product-limit estimator of Kaplan and Meier, and log-rank test will be used for comparison of local failure rate in patients treated with stereotactic radiosurgery (SRS) to null hypothesis with respect to the time to local failure. Patients who are lost to follow-up or who die from distant disease before having local failure will be censored. Local control rates at 4 months may be estimated with 95% confidence intervals using Kaplan-Meier method.
Measure: Time to progression Time: Up to 12 monthsDescription: The baseline Listening Vocabulary Levels Test-Revised (HVLT-R) score will be compared to the HVLT-R score in patients surviving 4 months. Preservation of function is defined as improvement of HVLT-R score or decline by 4 points or less. Failure is defined as decline by 5 or more points. Time to neurocognitive decline will be estimated using the product-limit estimator of Kaplan and Meier, and log-rank test will be used for comparison of neurocognitive decline rate in patients treated with SRS to null hypothesis with respect to the time to neurocognitive decline. Patients who are lost to follow-up or who die before having neurocognitive decline will be censored. Rates of neurocognitive decline at 4 months may be estimated with 95% confidence intervals using Kaplan-Meier method.
Measure: Time to neurocognitive failure Time: Up to 12 monthsDescription: Will be estimated using the product-limit estimator of Kaplan and Meier. Cox proportional hazards regression will be used to model overall survival as a function of age, Karnofsky performance status, extra-cranial disease, and BRAF mutation status. Will model time to local failure, time to distal failure, and time to neurocognitive decline using competing risk regression when death without events is considered as a competing risk.
Measure: Overall survival Time: Up to 12 monthsDescription: Will use descriptive statistics and boxplots to summarize and illustrate the neurocognitive function score at each assessment time. Will similarly summarize and illustrate the change from baseline in neurocognitive function score. Will also fit the neurocognitive data with a general linear model including the baseline score as covariates to assess differences in neurocognitive scores over time (to 4 months) for those patients that are alive and progression-free at 4 months. We will also model the data with mixed effects regression including baseline HVLT-R, time, number of lesions, extra-cranial disease, and a patient specific random effect. Will use logistic regression methods to model the logit of the probability of neurocognitive decline as function of ApoE (i.e., Apo E2, Apo E3, Apo E4) genotyping, inflammatory markers, hormone growth factors.
Measure: Neurocognitive function score Time: Up to 12 monthsDescription: Will use descriptive statistics to summarize the number of cycles of systemic chemotherapy given following radiation treatment for each treatment arm.
Measure: Number of cycles of systemic chemotherapy given following radiation treatment Time: Up to 12 monthsSingle Group Assignment
There is one SNP
V. To assess the pre-treatment factors of age, Karnofsky performance scale (KPS), extra-cranial disease, BRAF-V600E mutation status in the predictive determination of local and distal control and neurocognitive outcome in each treatment arm. --- V600E ---