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TMPRSS2: Potential Biomarker for COVID‐19 Outcomes

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Coronavirus disease 2019 (COVID-19) clinical data has so far shown that the mortality rate for men is higher than for women. This disparity is observed worldwide and across different ethnic/racial… Click to show full abstract

Coronavirus disease 2019 (COVID-19) clinical data has so far shown that the mortality rate for men is higher than for women. This disparity is observed worldwide and across different ethnic/racial groups (Table 1). Early reports from Italy and Germany show that while infection rates are similar between sexes, nearly 70% and 65%, respectively, of deaths aremales. InNewYork City, an epicenter of the US outbreak, 54% of those infected are men, yet men account for 63% of deaths. Epidemiologic data from the previous coronavirus infections, severe acute respiratory syndrome (SARS) and the Middle East respiratory syndrome (MERS), also indicated sex-based differences in disease susceptibility and outcomes. This discrepancy was attributed tomany factors, including smoking, immune differences, and other comorbidities. An initial report released by the Centers for Disease Control and Prevention (CDC) on population-based surveillance sampled across 14 states, representing 10% of the US population, has indicated that age and comorbidities are associated with increased hospitalization rates of patients with COVID19.1 The data on sex also suggest sexual dimorphism consistent with reports from other countries (Table 1). The preliminary data on race suggest that minority populations may be disproportionately impacted by the coronavirus, where blacks contributed to 33% of the hospitalizations despite representing only 18% of the sampled population. As more data become available, correlations between race and disease severity can be interrogated more thoroughly, including the role of socioeconomic factors on influencing this disparity. Investigations into the genetic and molecular differences between women and men are warranted to identify relevant biomarkers for disease susceptibility and outcomes. Based on data from literature, we propose a novel mechanism of the observed sex differences in clinical outcomes in patients and identify a role for the transmembrane protease serine 2 (TMPRSS2) as a contributing factor to the more severe outcomes noted for COVID-19.

Keywords: covid outcomes; biomarker covid; tmprss2 potential; covid; coronavirus; potential biomarker

Journal Title: Journal of Clinical Pharmacology
Year Published: 2020

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