Background: The outbreak of the coronavirus disease 2019 pandemic has brought uncertainty to the world due to lack of knowledge about the virus causing this disease. It is crucial that we get to know severe acute respiratory syndrome coronavirus as much as possible, discover risk groups and criteria that make them more endangered and try to limit the crisis with as much information as possible.
Objective: The aim of our study is to make a systematic review of published studies in selected databases and seek information on the possible link between genetic factors of the host and susceptibility to the disease and its severity.
Methods: PubMed and ScienceDirect databases were searched using predefined search sets for articles about the influence of host genetics factors on the possibility of infection and the course of the coronavirus disease 2019. Research articles published in English up to and including January 2022 were included, in which the study population were humans.
Results: With defined search sets, 20 relevant studies that examined different groups of genes were identified, namely those that affect the entry of the virus into the cell, those that affect the immune response of the host, genes that do not belong to any of these categories, and one article in which they also used an all-genomic approach. They identified 8 genes relevant to the new coronavirus disease. The selected studies were then assigned the proposed quality assessment of the research using the tool for assessing the quality of genetic studies. A review of the literature revealed 3 genes and their polymorphisms that increase susceptibility to new coronavirus infection (ACE2, ACE and HLA), 17 genes and their polymorphisms that have an impact on the worse course of the disease (ACE2, ACE, IFITM3, GSTM1, HLA, VDR, GC, NADSYN1, LZTFL1, VWA8, PDE8B, CTSC, THSD7B, STK39, FBX034, RPL6P27 and METTL21C) and 3 genes with their polymorphisms that play a protective role in infection with the new coronavirus (HLA, AR and VDR). Current studies indicate the importance of genetic factors but they need to be investigated in more detail in the future on larger groups of subjects.
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