Transforming Growth Factor-β1 C (+869) T Codon 10 Gene Polymorphism Significantly Associated with Rates of SARS-CoV-2 in Kidney Transplant Recipients in Kuwait.

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OBJECTIVES: COVID-19, which began in Wuhan, China, in December 2019, has caused a large global pandemic and poses a serious threat to public health. As of March 20, 2023, over 13 billion COVID-19 vaccine doses had been administered worldwide, with the United States accounting for almost 672 million of total administered vaccine doses. Some COVID-19 patients experience sudden and rapid deterioration with onset of fatal cytokine storm syndrome, which increased interest in the mechanisms, diagnosis, and therapy of cytokine storm syndrome. Although the prototypic concept of cytokine storm syndrome was first proposed 116 years ago, we have only begun to study and understand it over the past 30 years. Clinical data suggest that Th1, Th2, and Th3 and macrophage origin cytokines have effects on cytokine storm syndrome. We aimed to study the effects of cytokine gene polymorphisms in cytokine storm syndrome mechanisms and progression of COVID-19 among kidney transplant recipients. MATERIALS AND METHODS: We screened 309 patients who had undergone kidney transplant at the Hamad Al Essa organ transplant center. From February 2020 through February 2022, 64 patients (20.7%) developed COVID-19 infection. Patient blood samples were screened for the key Th1, Th2, Th3, and macrophage cytokines gene polymorphisms. RESULTS: We observed that only transforming growth factor-β C (+869) T codon 10, but not interferon-γ T (+874) A, interleukin 6 G (-174) C, and interleukin 4C (-490) T, was significantly associated with progression of COVID-19 and cytokine storm syndrome mechanisms (P < 0.001). CONCLUSIONS: Our finding can be a profoundly important factor in the initiation of cytokine storm syndrome and progress of COVID-19.

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