Abstract
Objective Coronavirus disease (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has spread globally. Although the relationship between anti-SARS-CoV-2 immunoglobulin G (IgG) antibodies and COVID-19 severity has been reported, information is lacking regarding the seropositivity of patients with particular types of diseases, including hematological diseases. Methods In this single-center, retrospective study, we compared SARS-CoV-2 IgG positivity between patients with hematological diseases and those with non-hematological diseases. Results In total, 77 adult COVID-19 patients were enrolled. Of these, 30 had hematological disorders, and 47 had non-hematological disorders. The IgG antibody against the receptor-binding domain of the spike protein was detected less frequently in patients with hematological diseases (60.0%) than in those with non-hematological diseases (91.5%; p=0.029). Rituximab use was significantly associated with seronegativity (p=0.010). Conclusion Patients with hematological diseases are less likely to develop anti-SARS-CoV-2 antibodies than those with non-hematological diseases, which may explain the poor outcomes of COVID-19 patients in this high-risk group.
Keywords: COVID-19; SARS-CoV-2; SARS-CoV-2 IgG antibodies.
【저자키워드】 COVID-19, SARS-CoV-2, SARS-CoV-2 IgG antibodies, 【초록키워드】 coronavirus disease, IgG, coronavirus, Diseases, antibody, COVID-19 severity, outcome, severe acute respiratory syndrome Coronavirus, anti-SARS-CoV-2, rituximab, Spike protein, Spread, Retrospective study, anti-SARS-CoV-2 antibodies, Immunoglobulin G, IgG antibody, Receptor-binding domain, Immunoglobulin, anti-SARS-CoV-2 antibody, IgG antibodies, Patient, Seropositivity, respiratory, information, disease, SARS-CoV-2 IgG, COVID-19 patients, COVID-19 patient, Seronegativity, acute respiratory syndrome, acute respiratory syndrome coronavirus, acute respiratory syndrome coronavirus 2, disorders, SARS-CoV-2 IgG antibodies, single-center, hematological, objective, Result, enrolled, develop, caused, significantly, reported, less, the spike protein, the receptor-binding domain, explain, adult COVID-19 patient, 【제목키워드】 IgG, Japan,