Abstract
Background: Recombinant monoclonal antibody therapies have been utilized under emergency use authorization (EUA) for the prevention of clinical decompensation in high-risk COVID-19 positive patients for up to 10 days from symptom onset. The purpose of this study was to determine the impact of the timing of the monoclonal antibody, bamlanivimab, on clinical outcomes in high-risk COVID-19 positive patients.
Methods: This was an IRB-approved, retrospective evaluation of adult patients who received bamlanivimab per EUA criteria in the emergency department (ED). Patients were dichotomized into two groups- 3 days of symptoms or less (early) versus 4 to 10 days (late). The primary outcome was hospitalization for COVID-related illness at 28 days (or treatment failure). Secondary outcomes were COVID-related ED visits at 28 days, hospital and intensive care unit (ICU) length of stay (LOS), and in-hospital mortality at 28 days.
Results: A total of 839 patients were included in the analysis. There was no difference observed in COVID-related hospitalization rates within 28 days between the early and late bamlanivimab administration groups (7.5% vs. 8.2%, p = 0.71). There was no difference in COVID-related ED visits within 28 days with 13% of patients returning to the ED.
Conclusions: In conclusion, there were no differences in the rates of hospitalization at 28 days when bamlanivimab was administered in the first 3 days of illness versus days 4 to 10. Future prospective studies are warranted to expand upon the characteristics of patients that may or may not benefit from monoclonal antibody therapy.
Keywords: Bamlanivimab; COVID-19; High-risk COVID-19; Monoclonal antibody therapy.
【저자키워드】 COVID-19, bamlanivimab, High-risk COVID-19, Monoclonal antibody therapy., 【초록키워드】 Treatment, therapy, intensive care, Hospitalization, hospital, Prospective Study, monoclonal antibody, intensive care unit, Symptom, outcome, Emergency use authorization, clinical outcomes, bamlanivimab, monoclonal antibody therapy, EUA, ICU, emergency department, Clinical outcome, Patient, group, in-hospital mortality, retrospective, administration, Analysis, recombinant, criteria, treatment failure, monoclonal antibody therapies, symptom onset, LOS, Primary outcome, two groups, Secondary outcomes, Adult patients, no difference, no differences, decompensation, COVID-19 positive patients, Administered, Future, benefit, secondary, clinical decompensation, less, determine, expand, characteristics of patient, COVID-19 positive patient, dichotomized, the timing, 【제목키워드】 Impact, Patient, readmission, administration,