2795. Clinical and Economic Impact of a Ribavirin Intervention Program in Hematopoietic Cell and Solid-organ Transplant Recipients with Respiratory Syncytial Virus Infection

BACKGROUND: While data are limited, oral ribavirin (RBV) has been shown to be a cost-effective alternative to aerosolized RBV for the treatment of respiratory syncytial virus (RSV) in immunocompromised patients with significant reductions in acquisition and administration costs. We evaluated the clinical and economic impact of an RBV intervention program at a large, academic medical center. METHODS: This single-center, retrospective cohort study evaluated hematopoietic cell and solid-organ transplant patients admitted to Duke University Hospital (DUH) with documented or suspected RSV receiving aerosolized and/or oral RBV from July 2013 to April 2018. The ID consult service approval requirement was initiated for aerosolized RBV beginning in October 2015. Education was done at this time to promote oral RBV as the preferred therapy for immunocompromised, RSV-infected adults and children. No restrictions or treatment protocols were in place prior to that time for either formulation. Clinical outcomes, adverse effects, and drug acquisition cost were collected. A cost-avoidance analysis was performed using DUH acquisition cost for actual and alternate RBV therapy. RESULTS: A total of 118 treatments (115 unique adult and pediatric patients) were included. Demographics were comparable between groups with and median age was 52 years in the Oral RBV and 61 years in the Aerosol RBV group. The predominant transplant type was lung (62.5% in Oral RBV and 55.6% in Aerosol RBV) followed by hematopoietic (16.7% in Oral RBV and 27% in Aerosol RBV). The median (range) duration of therapy was 4 (1–16) days for oral RBV and 5 (1–23) days for aerosolized RBV. The total cost avoidance was $2,522,915 with oral RBV. Clinical outcomes are summarized in Table 1. CONCLUSION: In our large tertiary care center, the use of oral RBV led to substantial cost avoidance with clinical outcomes comparable to aerosolized RBV in immunocompromised patients. Larger prospective trials evaluating oral RBV for RSV treatment are warranted. [Image: see text] DISCLOSURES: All authors: No reported disclosures.