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Current Affairs

Gene that explains asymptomatic nature of infection

Date: 09 June 2021 Tags: Biotechnology


A new study has discovered that there may be a genetic reason why some people catch Covid but do not show symptoms.



There have been immense efforts made by researchers across the globe to identify the reason why some people become extremely sick whereas others are asymptomatic.



  • The details showed that the HLA-DRB1*04:01 gene was three times more likely to be found in people who are asymptomatic. This is an indication of natural protection.

  • To arrive at the results, researchers compared infected people from same communities who had no underlying health problems such as diabetes or blood pressure.

  • A gene sequencing method was used to identify certain set of genes belonging to the HLA category.

  • The HLA-DRB1*04:01 is extremely dependent on latitudes and longitudes. More number of people in North and West Europe are likely to have this gene.

  • This result showed that people of such European decent are most likely to be asymptomatic but will transmit the infection to other population.

  • One in every five people of European decent in United Kingdom is likely to possess this gene in their body.

  • The research is important because it will help us in identifying gene therapy technique that can be used for treatment.