In addition to this,glycan sequons of SARS-CoV-2 are reported to be conserved in the courseof the COVID-19 pandemic between December 2019 to April 2020.34 This phenomenon is correlated with another reportwhich showed that SARS-CoV-2 mutants without glycans especially atN165 and N234 sequons have decreased affinity to ACE2 protein. The gene discussed is ACE2; the disease is COVID-19.