Cytarabine is a pyrimidine nucleoside analog, commonly used in multiagent chemotherapy regimens for the treatment of leukemia and lymphoma, as well as for neoplastic meningitis. Ara-C-based chemotherapy regimens can induce a suboptimal clinical outcome in a fraction of patients. Several studies suggest that the individual variability in clinical response to Leukemia & Lymphoma treatments among patients, underlying either Ara-C mechanism resistance or toxicity, appears to be associated with the intracellular accumulation and retention of Ara-CTP due to genetic variants related to metabolic enzymes. Herein, we reported (a) the latest Pharmacogenomics biomarkers associated with the response to cytarabine and (b) the new drug formulations with optimized pharmacokinetics. The purpose of this review is to provide readers with detailed and comprehensive information on the effects of Ara-C-based therapies, from biological to clinical practice, maintaining high the interest of both researcher and clinical hematologist. This review could help clinicians in predicting the response to cytarabine-based treatments.

Objective: The recent outbreak of COVID-19 limited the resources of the National Health System necessitating the formulation of novel practice recommendations for oncological care. To date, management guidelines for cancer patients in case of pandemic are not available. Each center tried to manage its own needs and requests independently, often reducing access to treatment and diagnostic exams to patients. Here, we have described the management of cancer patients during COVID-19 infection with suggestions of some practical approaches applied by our Regional Center for Oncological Orientation (COrO) in S.G. Moscati Hospital (Taranto, Italy). Subjects and Methods: Our strategy was to minimize any interruption of cancer treatment through the extension of Taranto’s Health Regional (COrO). The extension of the oncological network, assisted by the General Management of Taranto ASL through agreements with private structures in Taranto’s area, allowed cancer patients to receive up to 11 different types of services, according to their needs (first investigation or follow-up), and represents an exclusive organization on the entire Italian territory. Results: Thanks to the organization of the COrO in 2020, 1,406 first oncological visits and 566 preparatory treatments were carried out, 372 of exemption for oncological pathology (free health care) were activated, and 1,742 instrumental investigations and 7 cases of civil invalidity were performed (certificate of disability). Conclusions: We have overcome barriers to care of oncology patients leading to a reduction of waiting lists representing a practical application model that can be extended to other healthcare settings.