Background
Cancer patients are thought to have an increased risk of developing severe Coronavirus Disease 2019 (COVID-19) infection and of dying from the disease. In this work, predictive factors for COVID-19 severity and mortality in cancer patients were investigated.
Patients and Methods
In this large nationwide retro-prospective cohort study, we collected data on patients with solid tumours and COVID-19 diagnosed between March 1 and June 11, 2020. The primary endpoint was all-cause mortality and COVID-19 severity, defined as admission to an intensive care unit (ICU) and/or mechanical ventilation and/or death, was one of the secondary endpoints.
Results
From April 4 to June 11, 2020, 1289 patients were analysed. The most frequent cancers were digestive and thoracic. Altogether, 424 (33%) patients had a severe form of COVID-19 and 370 (29%) patients died. In multivariate analysis, independent factors associated with death were male sex (odds ratio 1.73, 95%CI: 1.18-2.52), ECOG PS ≥ 2 (OR 3.23, 95%CI: 2.27-4.61), updated Charlson comorbidity index (OR 1.08, 95%CI: 1.01-1.16) and admission to ICU (OR 3.62, 95%CI 2.14-6.11). The same factors, age along with corticosteroids before COVID-19 diagnosis, and thoracic primary tumour site were independently associated with COVID-19 severity. None of the anticancer treatments administered within the previous 3 months had any effect on mortality or COVID-19 severity, except cytotoxic chemotherapy in the subgroup of patients with detectable SARS-CoV-2 by RT-PCR, which was associated with a slight increase of the risk of death (OR 1.53; 95%CI: 1.00-2.34; p = 0.05). A total of 431 (39%) patients had their systemic anticancer treatment interrupted or stopped following diagnosis of COVID-19.
Conclusions
Mortality and COVID-19 severity in cancer patients are high and are associated with general characteristics of patients. We found no deleterious effects of recent anticancer treatments, except for cytotoxic chemotherapy in the RT-PCR-confirmed subgroup of patients. In almost 40% of patients, the systemic anticancer therapy was interrupted or stopped after COVID-19 diagnosis.
Etretinate (Tigason®, Tegison®) and its active metabolite acitretin (Neotigason®, Soriatane®) are known teratogens. Pregnancy should be avoided during treatment and until 2 years after treatment discontinuation. The question is discussed whether a dose or a blood concentration of the drug below which there is no teratogenic risk can be determined. Animal experimental and human pharmacokinetic data are reviewed. An evaluation of the outcomes of pregnancies which occurred in mothers exposed to etretinate or acitretin was performed. A threshold dose in human therapy below which there is no risk of congenital malformation cannot be determined based on animal experimental data. With regard to pharmacokinetics, there are currently no data suggesting that blood levels of the drug below the detection limit of 2 ng/ml are associated with a teratogenic risk. The most useful information is given by reports in women who were exposed to either retinoid before or during pregnancy. The data indicate that the risk of spontaneous abortion or congenital malformation is high when the drug is administered during the first trimester of pregnancy. After treatment discontinuation, the risk is low since the number of abnormalities seems not to exceed those observed in a general population. There are currently no available data which suggest that the pregnancy warnings are inappropriate in terms of duration of contraception.
Subscribe to PCMR and stay up-to-date with the only journal committed to publishing basic research in melanoma and pigment cell biology As a member of the IFPCS or the SMR you automatically get online access to PCMR. Sign up as a member today at www.ifpcs.org or at www.societymelanomaresarch.org
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.