Rapid Tumor DNA Analysis of Cerebrospinal Fluid Accelerates Treatment of Central Nervous System Lymphoma.

Delays and risks associated with neurosurgical biopsies preclude timely diagnosis and treatment of central nervous system (CNS) lymphoma and other CNS neoplasms. We prospectively integrated targeted rapid genotyping of cerebrospinal fluid (CSF) into the evaluation of 70 patients with CNS lesions of unknown etiology. Participants underwent genotyping of CSF-derived DNA using a qPCR-based approach for parallel detection of single-nucleotide variants in the MYD88, TERT promoter, IDH1, IDH2, BRAF and H3F3A genes within 80 minutes of sample acquisition. Canonical mutations were detected in 42% of patients with neoplasms, including cases of primary and secondary CNS lymphoma, glioblastoma, IDH-mutant brainstem glioma and H3K27M-mutant diffuse midline glioma. Genotyping results eliminated the need for surgical biopsies in 7/33 (21.2%) cases of newly diagnosed neoplasms, resulting in significantly accelerated initiation of disease-directed treatment (median 3 vs 12 days; p = 0.027). This assay was then implemented in a Clinical Laboratory Improvement Amendments (CLIA) environment, with 2-day median turnaround for diagnosis of central nervous system lymphoma from 66 patients across 4 clinical sites. Our study prospectively demonstrates that targeted rapid CSF genotyping influences oncologic management for suspected CNS tumors.

Study protocol for NeuroCARE: a randomised controlled trial of a psychological intervention for caregivers of patients with primary malignant brain tumours.

INTRODUCTION: Caregivers of patients with primary malignant brain tumours experience substantial psychological distress while caring for someone with a progressive, life-limiting neurological illness. However, there are few interventions aimed at addressing the psychosocial needs of this population. We developed and are testing a population-specific, evidence-based, telehealth intervention (NeuroCARE) to reduce anxiety symptoms and improve psychosocial functioning in this caregiver population. METHODS AND ANALYSIS: This study is a non-blinded, randomised controlled trial of a psychological intervention for caregivers of patients with primary malignant brain tumours receiving care at the Massachusetts General Hospital Cancer Center or Dana-Farber Cancer Institute. We will enrol 120 caregivers who screen positive for heightened anxiety. Participants will be randomised 1:1 to the NeuroCARE intervention or a usual care control condition. Caregivers assigned to NeuroCARE will complete six individual telehealth sessions with a trained behavioural health specialist over 12 weeks. Caregivers randomised to the control condition will receive usual care, including possible referral to social work or other appropriate resources. Participants will complete self-report questionnaires at baseline and 11 weeks and 16 weeks postrandomisation. The primary outcome is anxiety symptoms at 11 weeks among NeuroCARE participants, compared with usual care. Secondary outcomes include caregiver-reported depressive symptoms, quality of life, caregiver burden, caregiving self-efficacy, perceived coping skills and post-traumatic stress disorder symptoms. We also will explore potential mediators of the NeuroCARE effect on caregiver anxiety symptoms. ETHICS AND DISSEMINATION: The study is funded by a Career Development Award from Conquer Cancer, the American Society of Clinical Oncology Foundation (award number 2019CDA-7743456038) and approved by the Dana-Farber/Harvard Cancer Center Institutional Review Board (Protocol #19-250 V.10.1). The study will be reported in accordance with the Consolidated Standards of Reporting Trials statement for non-pharmacological trials. Results will be presented at scientific meetings and in peer-reviewed journals. TRIAL REGISTRATION NUMBER: NCT04109209.

Phase II study of ipilimumab and nivolumab in leptomeningeal carcinomatosis.

Leptomeningeal disease (LMD) is a common complication from solid tumor malignancies with a poor prognosis and limited treatment options. We present a single arm Phase II study of 18 patients with LMD receiving combined ipilimumab and nivolumab until progression or unacceptable toxicity (NCT02939300). The primary end point is overall survival at 3 months (OS3). Secondary end points include toxicity, cumulative time-to-progression at 3 months, and progression-free survival. A Simon two-stage design is used to compare a null hypothesis OS3 of 18% against an alternative of 44%. Median follow up based on patients still alive is 8.0 months (range: 0.5 to 15.9 months). The study has met its primary endpoint as 8 of 18 (OS3 0.44; 90% CI: 0.24 to 0.66) patients are alive at three months. One third of patients have experienced one (or more) grade-3 or higher adverse events. Two patients have discontinued protocol treatment due to unacceptable toxicity (hepatitis and colitis, respectively). The most frequent adverse events include fatigue (N = 7), nausea (N = 6), fever (N = 6), anorexia (N = 6) and rash (N = 6). Combined ipilimumab and nivolumab has an acceptable safety profile and demonstrates promising activity in LMD patients. Larger, multicenter clinical trials are needed to validate these results.