Intracranial response to nivolumab in NSCLC patients with untreated or progressing CNS metastases

Elizabeth Dudnik*, Shlomit Yust-Katz, Hovav Nechushtan, Daniel A. Goldstein, Alona Zer, Dov Flex, Tali Siegal, Nir Peled

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Central nervous system (CNS) metastases occur in 30% of patients with advanced non-small cell lung cancer (NSCLC). Localized treatments targeting CNS metastases result in delays in systemic therapy administration and are associated with neurocognitive impairment. Nivolumab is an immune check-point inhibitor that is approved as a second-line treatment of NSCLC. Data regarding the intracranial activity of nivolumab is lacking.We retrospectively reviewed the efficacy and safety of nivolumab in five patients with advanced NSCLC and new/progressing intracranial metastases. Intracranial response was assessed by magnetic resonance imaging (MRI) using mRECIST v. 1.1 criteria.All patients had parenchymal brain metastases; two patients had leptomeningeal carcinomatosis diagnosed according to radiological criteria. All patients were asymptomatic and did not require corticosteroids or immediate local therapy. We observed one complete and one partial response in the brain. Stabilization of leptomeningeal carcinomatosis for 10 weeks was achieved in one additional patient. Two patients progressed in the CNS. Time-to-response comprised 5 weeks and 9 weeks; both responses are still ongoing at the time of the report (24+ and 28+ weeks since start of treatment). Systemic responses and intracranial responses were largely concordant. No treatment-related or CNS metastases-related grade ≥ 3 adverse events were observed.Nivolumab might have intracranial activity and favorable safety profile in patients with CNS metastases secondary to NSCLC. Nivolumab CNS activity warrants further evaluation.

Original languageEnglish
Pages (from-to)114-117
Number of pages4
JournalLung Cancer
Volume98
DOIs
StatePublished - 1 Aug 2016
Externally publishedYes

Funding

FundersFunder number
Bristol-Myers Squibb

    Keywords

    • Brain metastases
    • Leptomeningeal
    • Nivolumab
    • Non-small cell lung cancer
    • PD-1

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