In the case of SARS-CoV-2 infection, HLA-A*11, HLA-C*01, and HLA-DQB1*04 are associated with mortality by COVID-19 [203], whereas another HLA, such as HLA-A:02:01, is implicated in the activation of T cells [205]. The gene discussed is HLA-DQB1; the disease is COVID-19.