AMSTERDAM – Since 2014, approvals and expanding indications for Bruton's tyrosine kinase (BTK) inhibitors Imbruvica (ibrutinib, Pharmacyclics LLC/Janssen Biotech Inc.) and Calquence (acalabrutinib, Astrazeneca plc), and Bcl-2 inhibitor Venclexta (venetoclax, Abbvie Inc./Roche AG) have given many chronic lymphocytic leukemia (CLL) patients chemotherapy-free treatment options. Many cancer patients dread chemotherapy almost as much as they dread their cancer, and frail patients may be unable to withstand the toxicities of chemotherapy and greatly prefer those chemotherapy-free regimens.