Nilanjan Ghosh MD, PhD, Levine Cancer Institute, Charlotte, NC, discusses the identification of polymorphisms in genes of the Bruton’s Tyrosine Kinase (BTK) signaling pathway associated with ibrutinib-related cardiovascular side effects (CVSEs) observed in patients with chronic lymphocytic leukemia (CLL). In patients with CLL treated with ibrutinib monotherapy, five single nucleotide polymorphisms (SNPs) were significantly associated with CVSEs: GATA4, SGK1, KCNQ1, NPPA and SCN5A. A genetic risk score indicated increased risk of CVSEs in patients with at least two SNPs. This interview took place at the virtual European Hematology Association (EHA) Congress 2021.