Table 3 TLS risk assessment and management with venetoclax [48, 74,75,76].

From: First-line treatment for CLL in the era of targeted therapy

Risk group

Criteria

Management

Low

All lymph nodes <5 cm and ALC < 25 × 109/l

Prophylaxis: Allopurinol 2–3 d prior to venetoclax intake; rasburicase if uric acid is elevated

Hydration: Oral (1.5–2 l/d from 2 d prior to dose ramp-up)

Hospitalization: Outpatient, check TLS parameters and CrCl at least 6–8 h and 24 h after each ramp-up step

Intermediate

Any lymph node 5–10 cm or ALC ≥ 25 × 109/l

Prophylaxis: Allopurinol 2–3 d prior to venetoclax intake; rasburicase if uric acid is elevated

Hydration: Oral or intravenous

Hospitalization: Outpatient, check TLS parameters and CrCl at least 6–8 h and 24 h after each ramp-up step or inpatient if pre-existing abnormalities or relevant coexisting conditions (CrCl <80 ml/min)

High

Any lymph node ≥10 cm or

Any lymph node ≥5 cm and ALC ≥ 25 × 109/l

Prophylaxis: Rasburicase 2–3 d prior to venetoclax intake

Hydration: Oral and intravenous

Hospitalization: Admission to an inpatient or day hospital with intensified laboratory monitoring

  1. ALC absolute lymphocyte count, CrCl creatinine clearance, d days, h hours, TLS tumor lysis syndrome.