pci-32765 and Arthralgia

Inhibition of Bruton's tyrosine kinase (BTK) has revolutionized the treatment landscape for patients with chronic lymphocytic leukemia (CLL). By targeting this critical kinase in proximal B-cell receptor signaling, BTK inhibitors (BTKis) impair cell proliferation, migration, and activation of NF-κB. Clinically, because indefinite inhibition is a mainstay of therapy, there is an extended period of exposure in which adverse effects can develop. Given the impressive efficacy and activity of BTKis in the treatment of patients with CLL, appropriate management of treatment-emergent adverse events (AEs) is of paramount importance. Here we review the BTKi landscape and present the available toxicity and safety data for each agent. The long-term toxicity profile of ibrutinib, a first-in-class inhibitor, is well characterized and includes a clinically significant incidence of cardiac arrhythmias, bleeding, infection, diarrhea, arthralgias, and hypertension. Acalabrutinib, the initial second-generation BTKi to earn approval from the US Food and Drug Administration, demonstrates improved kinase selectivity for BTK, with commonly observed adverse reactions including infection, headache, and diarrhea. Mediated by both on-target inhibition of BTK and variable off-target inhibition of other kinases including interleukin-2-inducible T-cell kinase (ITK), tyrosine-protein kinase (TEC), and endothelial growth factor receptor (EGFR), the toxicity profile of BTKis is closely linked to their pattern of kinase binding. Other emerging BTKis include second-generation agents with variable degrees of kinase selectivity and third-generation agents that exhibit reversible noncovalent binding to BTK. We also highlight critical considerations for the prevention and monitoring of AEs and offer practical management strategies for treatment-emergent toxicities.

Topics: Adenine; Agammaglobulinaemia Tyrosine Kinase; Aged; Animals; Arrhythmias, Cardiac; Arthralgia; Benzamides; Diarrhea; Hemorrhage; Humans; Hypertension; Infection Control; Infections; Male; Piperidines; Protein Kinase Inhibitors; Pyrazines

Chronic lymphocytic leukemia (CLL) therapy has changed dramatically with the introduction of several targeted therapeutics. Ibrutinib was the first approved for use in 2014 and now is used for initial and salvage therapy of CLL patients. With its widespread use in clinical practice, ibrutinib's common and uncommon adverse events reported less frequently in earlier clinical trials have been experienced more frequently in real-world practice. In particular, atrial fibrillation, bleeding, infections, and arthralgias have been reported. The management of ibrutinib's adverse events often cannot be generalized but must be individualized to the patient and their long-term risk of additional complications. When ibrutinib was initially developed, there were limited therapeutic alternatives for CLL, which often resulted in treating through the adverse events. At the present time, there are several effective alternative agents available, so transition to an alternative CLL directed therapy may be considered. Given the continued expansion of ibrutinib across many therapeutic areas, investigation of the pathogenesis of adverse events with this agent and also clinical trials examining therapeutic approaches for complications arising during therapy are needed. Herein, we provide strategies we use in real-world CLL clinical practice to address common adverse events associated with ibrutinib.

Topics: Adenine; Aged; Anti-Infective Agents; Anticoagulants; Arthralgia; Atrial Fibrillation; Drug Resistance, Neoplasm; Female; Hemorrhage; Humans; Infections; Leukemia, Lymphocytic, Chronic, B-Cell; Male; Middle Aged; Piperidines; Prognosis; Pyrazoles; Pyrimidines

Ibrutinib is indicated in Europe for the treatment of several B-cell malignancies, including chronic lymphocytic leukaemia (CLL). However, despite the high efficacy and favourable toxicity profile of ibrutinib, recent data suggest that it is not always administered optimally in clinical practice, with an increased tendency for dose reduction and a higher frequency of discontinuation. An expert panel of European haematologists was convened to identify practical issues pertinent to physicians involved in the therapeutic management of ibrutinib-treated CLL patients and here we outline the findings. Practical management recommendations are given for treating patients with ibrutinib and clinical considerations for the management of adverse events (AEs) that can be associated with ibrutinib treatment are addressed. This article highlights that patients should be monitored for treatment emergent adverse events, most of which are mild, transient and generally occur early in therapy and that, even with more challenging AEs, patients can often be maintained on therapy with minimal disruption through careful management. The necessity to use the correct ibrutinib dose, along with increased awareness, vigilance, mitigation and management of AEs, are all recommended to maximise outcomes for CLL patients treated with ibrutinib.

Topics: Adenine; Anticoagulants; Antineoplastic Agents; Arthralgia; Atrial Fibrillation; Diabetes Mellitus, Type 1; Diarrhea; Drug Eruptions; Drug Interactions; Exanthema; Fatigue; Hemorrhage; Humans; Hypertension; Infections; Leukemia, Lymphocytic, Chronic, B-Cell; Lymphocytosis; Medication Adherence; Myalgia; Piperidines; Platelet Aggregation Inhibitors; Pyrazoles; Pyrimidines; Treatment Outcome

Topics: Adenine; Adult; Arthralgia; Humans; Leukemia, Lymphocytic, Chronic, B-Cell; Lymphoma, Mantle-Cell; Musculoskeletal Pain; Myalgia; Piperidines; Protein Kinase Inhibitors; Pyrazoles; Pyrimidines