Serious hemorrhagic events, including fatal events, reported; the mechanism for the bleeding events is not well understood; acalabrutinib may further increase hemorrhage risk in patients receiving antiplatelet or anticoagulant therapies, and patients should be monitored for signs of bleeding; consider the benefit-risk of withholding acalabrutinib for 3-7 days presurgery and postsurgery depending on the type of surgery and the risk of bleeding Serious infections (bacterial, viral, or fungal), including fatal events and opportunistic infections, reported; monitor for infection and consider prophylaxis in patients who are at increased risk for opportunistic infections Cytopenias reported, including neutropenia, anemia, and thrombocytopenia; assess complete...