Significantly more IFN-gamma- and TNF-alpha-producing SARS-CoV-2-specific T-cells were found in the blood of patients who got infected with SARS-CoV-2 and had been diagnosed with PASC compared to those who recovered from COVID-19 without PASC (Littlefield et al., 2022). The gene discussed is IFNG; the disease is long COVID-19.