Coronavirus disease 2019 (COVID-19) is an epidemic disease caused by SARS-CoV-2, which is a sizable enveloped RNA virus, exhibiting approximately 80% sequence similarity with SARS-CoV, and predominantly impacts the respiratory system owing to its main attachment to angiotensin converting enzyme-2 (ACE-2) receptors (1, 2). The gene discussed is ACE2; the disease is COVID-19.