Genetic Variant Associated with Increased Risk of Long COVID Symptoms
A new study uncovers a genetic variant near FOXP4 linked to a 60% increased risk of developing long COVID, highlighting the role of lung function in post-COVID symptoms.
Recent research conducted by an international team has identified a genetic factor that may predispose individuals to developing long COVID, a condition characterized by persistent symptoms following COVID-19 infection. The study, published in Nature Genetics, highlights a specific gene variant situated near the FOXP4 gene, which plays a crucial role in lung development and function. This discovery sheds light on the biological mechanisms underlying long COVID and emphasizes the importance of genetic factors in the disease's manifestation.
Long COVID, also known as post-COVID syndrome, affects many who recover from the initial infection but continue to experience symptoms such as fatigue, cognitive impairments, and breathing difficulties. Despite ongoing research, the precise causes of these lingering symptoms remain largely unclear. To address this, researchers from the Karolinska Institutet in Sweden and the Institute for Molecular Medicine in Finland collaborated within the framework of the Long COVID Host Genetics Initiative.
They analyzed genetic data from over 6,450 long COVID patients and more than a million controls across 24 studies in 16 countries. Their analyses revealed that carriers of the identified gene variant have approximately a 60% increased risk of developing long COVID. The findings were corroborated by an independent study involving an additional 9,500 cases.
The gene variant's proximity to FOXP4, essential for lung development, suggests that impaired lung function may be a key contributor to persistent long COVID symptoms. According to Dr. Hugo Zeberg from Karolinska Institutet, this indicates that compromised lung health could be a significant factor in the syndrome's development. However, he emphasizes that this gene variant is just one piece of a much larger puzzle that includes multiple biological and environmental factors.
Experts in the field note that genetic studies like this are vital for understanding disease mechanisms, especially in conditions like long COVID where the causes are complex and multifaceted. Hanna Ollila from the Institute for Molecular Medicine Finland adds that these insights could pave the way for targeted interventions and personalized management strategies for those vulnerable to long COVID.
This breakthrough underscores the importance of considering genetic predispositions in the ongoing fight against COVID-19 and its long-term impacts.
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