5. CONCLUSIONS
We conclude that the prevalence distribution of the risky alleles of the gene defect that causes A1AT insufficiency, which is one of the most important protective factors of lung tissue, is related to the prevalence of COVID-19 pandemic data. More detailed studies are needed on the relationship between A1AT and COVID-19 in order to confirm this argument, which we think can contribute significantly to combating the COVID-19 pandemic.
Limitations: Restriction of the source articles concerning A1AT data should be considered as our limitations.