Nurse and nurse practitioner-lead monoclonal antibody initiative for solid organ transplant (SOT) recipients with COVID-19

ABSTRACT

Purpose: Monoclonal antibody (mAB) infusion (bamlanivimab or casirivimab/ imdevimab) for symptomatic, non-hypoxemic, high-risk outpatients with COVID-19 infection, is an available early intervention for COVID-19+ SOT recipients. We aimed to assess efficiency in time from diagnosis to treatment, and outcomes in a retrospective cohort of SOT recipients with COVID-19 who received mAB. Methods: We developed a Nurse Coordinator-led initiative to screen, refer, and facilitate mAB infusion for COVID-19+ SOT recipients within 10 days of symptom onset. SOT recipients received electronic messaging to promptly report potential COVID-19 symptoms to the transplant team. Data were collected on time from symptom onset to diagnosis, mAB infusion, and follow-up > 21 days, and hospital admissions, disease severity, mortality, and rejection. Results: 34 out of 36 referred SOT recipients with symptomatic COVID-19 disease without hypoxia received mAB therapy (3 heart, 8 lung, 16 kidney, 2 Liver-Kidney, 2 Pancreas-Kidney, 3 Kidney-Heart). Median time from symptom onset to diagnosis was 2 days and from date of diagnosis to mAB infusion was 4 days. Of those 34, 88% did not require hospitalization and recovered uneventfully. 12% required hospitalization for COVID disease progression, two on the same day as mAB infusion, and the other 2, more than 26 days post infusion. Of these, 2 patients had mild-moderate hypoxia, and 2 had critical disease. Only 1 patient died from COVID-19 complications and no episodes of rejection or graft loss were observed. Conclusions: The Nurse Coordinator-led initiative efficiently facilitated mAB therapy for COVID-19+ SOT recipients and was associated with excellent outcomes. Compared to prior published COVID-19 outcomes in SOT recipients, patients who received mAB may have reduce hospitalization and low mortality. As mAB therapy may be underutilized in the general population, these results support efforts to educate transplant centers to implement efficient interventions for the screening and referral of COVID+ SOT recipients for mAB therapy.