Abstract
The treatment landscape in relapsed/refractory chronic lymphocytic leukaemia (CLL) has rapidly evolved over the past five years, with one such emergent treatment being the BCL2 inhibitor, venetoclax. This oral treatment has demonstrated significant clinical advantages in indicated patients, but rapid tumour debulking can lead to a treatment-related risk of the acute condition known as tumour lysis syndrome (TLS). Here, I present real patient cases to show how I have used the recommended predose monitoring and prophylactic procedures to mitigate the risk of TLS. I also used the ramp-up dose escalation schedule of venetoclax therapy initiation to safely take patients through the treatment, successfully providing them with sustained clinical benefits.