Non Small Cell Lung Cancer Clinical Trial
Official title:
CSF Liquid Biopsy Based Characterization of Leptomeningeal Disease in EGFR Mutant Non-Small Cell Lung Cancer
Leptomeningeal disease is malignant seeding of the leptomeninges and presents with a variety of symptoms frequently impacting quality of life. With improvement in treatment options, rates of leptomeningeal disease are increasing and currently found in up to 9% of EGFR mutant NSCLC. Systemic therapy may be more effective if it can target the correct molecular aberration. The molecular characterization of central nervous system disease may differ from disease outside of the central nervous system. The aim of this pilot trial is to evaluate for molecular differences between cerebral spinal fluid (CSF) and blood circulating tumor DNA (ctDNA) through the use of ddPCR and BC Cancer NGS panel molecular testing.
The aim of this pilot trial is to evaluate the concordance/discordance of molecular profiling of CSF and plasma ctDNA after the development of leptomeningeal disease in EGFR mutant NSCLC. Patients with EGFR mutant NSCLC who develop leptomeningeal disease on a first, second or third generation tyrosine kinase inhibitor are potentially eligible for this clinical trial. This is a prospective pilot study designed to accrue 10 patients. Baseline MRI brain and spine must be completed prior to enrolment to insure that a lumbar puncture can be completed safely. All eligible subjects will be consented for ddPCR and Canexia Follow It plasma and CSF based molecular testing. Patients will have baseline information collected and will complete baseline quality of life (QoL) questionnaires. QoL questionnaires will be obtained every 12 weeks +/- 2 weeks and survival will be measured through chart review. There will be no treatment intervention; however we will collect information on treatment received after enrolment in trial. Volume of leptomeningeal disease will be scored by number of gadolinium enhancing sites in 8 predetermined locations. ;
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