https://www.selleckchem.com/products/abbv-744.html Although the canonical methods of comparing FCs (e.g., correlation, Euclidean) are adequate, geodesic distance provides a more principled and accurate way of comparing FCs by utilizing the underlying non-Euclidean geometry of correlation matrices. We demonstrate that by combining geodesic distance with an optimal amount of regularization, we can get substantially more reliable estimates of relative distances between FCs and thus uncover individual-level differences.Cancer patients under active chemotherapy are more vulnerable to coronavirus disease 19 (COVID-19). There are still some controversies regarding routine polymerase chain reaction testing of asymptomatic cancer patients before chemotherapy cycles. Despite a lack of data, Al-Shamsi et al. showed higher COVID-19 positivity rate among asymptomatic cancer patients. Furthermore, mortality rate was higher in this group of patients. There is no high evidence-based recommendation from the cancer societies for testing asymptomatic patients before each chemotherapy cycle. In this commentary, we assessed the current publications and guidelines regarding this issue. Capecitabine is an oral anticancer drug which can cause some adverse reactions and the great challenge for its use is to ensure the medication adherence. The aim of this study was to analyze adverse reactions and adherence to capecitabine in patients with gastrointestinal cancer. A prospective study was performed in a tertiary teaching hospital in Brazil. Outpatients undergoing capecitabine treatment for colorectal or gastric cancer were followed for three cycles of treatment. Patient demographic and clinical characteristics data were collected. Adverse reactions were analyzed using Common Terminology Criteria for Adverse Events (CTCAE) v.4. Adherence to capecitabine were evaluated using Morisky-Green and MedTake tests. Statistical analysis was conducted using Chi-square, Fisher's exact and McNemer tests.