Journal
JOURNAL OF ONCOLOGY PHARMACY PRACTICE
Volume 25, Issue 6, Pages 1534-1539Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1078155219830162
Keywords
Bing-Neel syndrome; Waldenstrom macroglobulinemia; lymphoma; ibrutinib
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Bing-Neel syndrome is a rare complication of Waldenstrom macroglobulinemia, characterized by infiltration of lymphoplasmacytic cells to the central nervous system. Multiple treatment modalities exist including purine analogs, bendamustine, high-dose methotrexate, or high-dose cytarabine. Of interest, ibrutinib, a Bruton tyrosine kinase inhibitor has also displayed efficacy in Bing-Neel syndrome. Current literature is limited for the treatment of Bing-Neel syndrome considering its rarity, and while ibrutinib is indicated for the treatment of Waldenstrom macroglobulinemia, it is utilized off-label for treatment of Bing-Neel syndrome. Additionally, debate exists regarding the recommended dosing strategy for ibrutinib for this indication with disease remission demonstrated at 560 mg and 420 mg. We present a case report that provides additional evidence for this debate with a patient who received 560 mg of ibrutinib initially and maintained disease control despite a dose reduction to 420 mg for tolerability. Ultimately, more data are needed to develop standardized Bing-Neel syndrome treatment strategies with specific consideration to the use of ibrutinib in this condition.
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