Complexity and clinical significance of drug–drug interactions (DDIs) in oncology: challenging issues in the care of patients regarding cancer-associated thrombosis (CAT)

• Published in: Supportive care in cancer Vol. 30; no. 10; pp. 8559 - 8573
• Main Authors: Tsoukalas, Nikolaos, Brito-Dellan, Norman, Font, Carme, Butler, Taylor, Rojas-Hernandez, Cristhiam M., Butler, Thomas, Escalante, Carmen
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.10.2022; Springer Nature B.V
• Subjects: Anticoagulants; Cancer; Cancer therapies; Clinical significance; Drug interactions; Medicine; Medicine & Public Health; Nursing; Nursing Research; Oncology; Pain Medicine; Rehabilitation Medicine; Special; Special Article; Thrombosis; Direct Oral Anticoagulants (DOACs); Cancer-Associated Thrombosis (CAT); Drug-Drug Interactions (DDIs); Oncology; Anticoagulant; Low Molecular Weight Heparins (LMWHs); Bleeding
• ISSN: 0941-4355; 1433-7339; 1433-7339
• DOI: 10.1007/s00520-022-07235-8

Cancer patients have an increased risk of developing venous thromboembolic events. Anticoagulation management includes prophylactic or therapeutic doses of low molecular weight heparins (LMWHs) or direct oral anticoagulants (DOACs). However, the management of thrombosis in patients with cancer is complex due to various individual and disease-related factors, including drug–drug interactions (DDIs). Furthermore, DDIs may impact both, cancer and venous thrombosis, treatment effectiveness and safety; their relevance is highlighted by the advances in cancer therapeutics. Given that these new oncology drugs are extensively used, more attention should be given to monitoring potential DDIs to minimize risks. Recognition of DDIs is of utmost importance in an era of rapid developments in cancer treatments and introduction of novel treatments and protocols. When managing cancer-associated thrombosis (CAT), the concomitant use of a DOAC and a moderate or strong modulator (inhibitor or inducer) of CYP3A4 or a P-glycoprotein (P-gp) is most likely to be associated with significant DDIs. Therefore, LMWHs remain the first-line option for the long-term management of CAT under these circumstances and physicians must consider utilizing LMWHs as first line. This review describes the risk of DDIs and their potential impact and outcomes in patients with cancer associated thrombosis (CAT) receiving anticoagulation.