For example, Ng reported that SARS-CoV infection was associated with HLA-B*0703 and HLA-DRB1*0301 in HongKong population [9], however, Lin's results showed that HLA-B*4601 and HLA-B*5401 were closely related to SARS-CoV infection [10]. The gene discussed is HLA-B; the disease is severe acute respiratory syndrome.