Second-degree Heart Block in a Patient on Zanubrutinib

Omar Abbasi 1, *, Milliejoan Mongalo 1, Kush Kapadia 1, Cristian Valdez 1, Tony Alarcon 1 and Xenia Schneider 2

1 Department of Internal Medicine, HCA Healthcare; MountainView Hospital, Las Vegas, NV, USA.

2 Department of Critical Care, HCA Healthcare; Southern Hills Hospital, Las Vegas, NV, USA.

Case Study
World Journal of Advanced Research and Reviews, 2024, 22(02), 1371–1373
Article DOI: 10.30574/wjarr.2024.22.2.1536
 
Publication history: 
Received on 08 April 2024; revised on 16 May 2024; accepted on 18 May 2024
 
Abstract: 
Zanubrutinib is a Bruton’s tyrosine kinase (BTK) inhibitor recently approved by the Food and Drug Administration for treatment of chronic lymphocytic leukemia (CLL) in January 2023. As a second generation BTK inhibitor, zanubrutinib is more selective for “on-target” BTK and have less cardiac side effects. Although atrial flutter and atrial fibrillation were noted side effects during clinical trials, heart block is not a known side effect. Here we present a case of a patient with CLL on zanubrutinib who presented with a second-degree heart block.
 
Keywords: 
CLL; Zanubrutinib; Heart block; Second-degree heart block; BTK inhibitor
 
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