Unveiling common markers in COVID-19: ADAMTS2, PCSK9, and OLAH emerged as key differential gene expression profiles in PBMCs across diverse disease conditions

Diverse COVID-19 severity levels and a spectrum of clinical manifestations underscore the need to comprehend the underlying genetic mechanisms. Such knowledge is essential for improving disease management and therapeutic approaches. This study aims to explore and uncover pivotal genes and pathways linked to distinct COVID-19 conditions, providing insights into potential therapeutic avenues. Gene expression data from COVID-19 patients across different conditions were analyzed using differential gene expression analysis. Significant genes were subjected to pathway analysis and protein–protein interaction network analysis. Gene ontology was used to identify the functions of these genes. The genes ADAMTS2, PCSK9, and OLAH were upregulated across all disease conditions including SARS-CoV-2 bacterial coinfection, potentially serving as therapeutic targets. The proteins, including RPL and CEACAM, could serve as a potential therapeutic target. The deregulated genes were majorly involved in inflammation, lipid metabolism, and immune regulation. The study's findings reveal significant gene expression differences among COVID-19 disease conditions. These insights guide future research toward targeted therapies and an improved understanding of disease progression and long-term consequences.