Observational study aimed at describing the characteristics and outcome of CLL patients who started treatment with venetoclax-based regimens according to the local label outside clinical trials in Italy in a period of time ranging from the start of the Venetoclax Named Patient Program (March 2016) until June 30th, 2025.

Observational study to describe the characteristics and outcome of CLL patients treated with venetoclax according to the local label. The study includes two different groups: a retrospective group (all patients who have received at least one dose of venetoclax before enrolment) and a prospective group (patients receiving treatment with venetoclax after enrolment). All patients in both groups will be observed for up to 48 months from the treatment start. In the prospective cohort only, QoL and treatment adherence will be assessed at the time of study entry (i.e. baseline) and thereafter at 3, 6, 9, 12, 18 24, 30, 36, 42 and 48 months of follow-up and at treatment discontinuation (due to any cause).

Inclusion Criteria

1. Patients with R/R CLL fulfilling the eligibility criteria required by the Venetoclax Named Patient Program who have received at least 1 dose of venetoclax.
2. Patients with CLL who have received at least 1 dose of venetoclax or are scheduled to start treatment with venetoclax according to the Post-marketing Use before June 30th, 2025.
3. Signed informed consent document (if feasible) according to ICH/EU/GCP and national local laws indicating that the patients understand the purpose of the study and they agree to give complete access to their medical records.

Exclusion Criteria:

None

CLL patients who started treatment with venetoclax-based regimens according to the local label outside clinical trials in Italy in a period of time ranging from the start of the Venetoclax Named Patient Program (March 2016) until June 30th, 2025.