Safety
~3.5-YEAR MEDIAN FOLLOW-UP
Safety and tolerability at 41-month median follow-up were
consistent with the established profile of CALQUENCE1
Most common AEs (all grades, ≥15% in either arm)1
Events of clinical interest at 41-month median follow-up1
Most common AEs (all grades, ≥15% in either arm)1
- Any grade cardiac arrhythmias of unspecified origin were reported including tachycardia (2.6%), arrhythmia (0.8%), and extrasystoles (0.8%) for CALQUENCE; tachycardia (2.7%), arrhythmia (0.8%), and extrasystoles (0.4%) for ibrutinib1
- Incidence of Richter's transformation (a secondary endpoint) was 3.8% (n=10) with CALQUENCE and 4.9% (n=13) with ibrutinib1
Low rates of atrial fibrillation/flutter, hypertension, and Grade ≥3 bleeding events at 41-month median follow-up1
In a pooled analysis of 1029 patients with CALQUENCE, Grade 3 or higher ventricular arrhythmia events were reported in 0.9% of patients.
Steady rates of atrial fibrillation, hypertension, and bleeding events over time2
At 41-month median follow-up:
- Median duration of exposure was 38.3 months (range: 0.3-55.9) with CALQUENCE and 35.5 months
(range: 0.2-57.7) with ibrutinib1
*Defined as preferred terms of atrial fibrillation and atrial flutter.1
†Select secondary endpoint.¹
‡Includes events with preferred terms: ventricular arrhythmia, ventricular extrasystoles, and ventricular fibrillation.1
§Defined as any hemorrhagic event that was serious, Grade ≥3 in severity, or a central nervous system hemorrhage (any-severity grade).1
||Defined as the preferred terms of hypertension, blood pressure increased, and blood pressure systolic increased.1
¶Most common Grade ≥3 infections were pneumonia (CALQUENCE, 10.5%; ibrutinib, 8.7%), sepsis (1.5%; 2.7%), and urinary tract infection (1.1%; 2.3%).1
#In patients without a history of atrial fibrillation/flutter.1
**Investigator-selected cumulative incidences of events of clinical interest and common AEs were assessed using Kaplan-Meier methods and a Cox proportional-hazards model.1,2
††Includes multiple adverse drug reaction terms including major bleeding, which was defined as any hemorrhagic event that was serious, Grade ≥3 in severity, or that was a central nervous system hemorrhage (any grade).2
‡‡Bleeding events occurring in ≥10% of patients in either treatment arm include contusion and epistaxis.2
AEs=adverse events.
- Byrd JC, Hillmen P, Ghia P, et al. Acalabrutinib versus ibrutinib in previously treated chronic lymphocytic leukemia: results of the first randomized phase III trial. J Clin Oncol. 2021;39(31):3441-3452 and supplementary appendix.
- Seymour JF, Byrd JC, Hillmen P, et al. Characterization of bruton tyrosine kinase inhibitor (BTKi)-related adverse events in a head-to-head trial of acalabrutinib versus ibrutinib in previously treated chronic lymphocytic leukemia (CLL). Poster presented at the American Society of Hematology (ASH) Annual Meeting; December 11-14, 2021. Abs 3721.