Additional linear regression analysis was carried out with all AAbs analyzed with COVID-19 severity revealed that a group of AAbs such as Collagen V, anti-mitochondrial antibodies (BCOADC-E2/OGDC-E2/PDC-E2), myositis specific antibodies (Mi-2) correlated significantly with COVID-19 severity after controlling for time since transplant and DSA presence before COVID-19 (Table 8). The gene discussed is PDC; the disease is COVID-19.