Genes May Leave Some People More Vulnerable to Severe Covid-19
By Carl Zimmer,
The New York Times
| 06. 03. 2020
Geneticists have turned up intriguing links between DNA and the disease. Patients with Type A blood, for example, seem to be at greater risk.
Why do some people infected with the coronavirus suffer only mild symptoms, while others become deathly ill?
Geneticists have been scouring our DNA for clues. Now, a study by European scientists is the first to document a strong statistical link between genetic variations and Covid-19, the illness caused by the coronavirus.
Variations at two spots in the human genome are associated with an increased risk of respiratory failure in patients with Covid-19, the researchers found. One of these spots includes the gene that determines blood types.
Having Type A blood was linked to a 50 percent increase in the likelihood that a patient would need to get oxygen or to go on a ventilator, according to the new study.
The study was equally striking for the genes that failed to turn up. The coronavirus attaches to a protein called ACE2 on the surface of human cells in order to enter them, for example. But genetic variants in ACE2 did not appear to make a difference in the risk of severe Covid-19.
The findings suggest that relatively unexplored factors...
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