1487. Variability of Pneumocystis jirovecii Prophylaxis Use Among Pediatric Solid Organ Transplant Providers

BACKGROUND: Pneumocystis jirovecii pneumonia (PJP) prophylaxis after pediatric solid-organ transplant (SOT) is routinely recommended, but practice patterns vary. METHODS: In 2018, an online survey was sent to 707 members of the International Pediatric Transplant Association. RESULTS: 105 responded, representing 47 institutions in 18 countries. Majority were transplant physicians (66%) or transplant surgeons (20%). Remainder were nurse practitioners (6%), infectious disease physicians (5%) or pharmacists (4%). Routine PJP prophylaxis was reported by 87%, while 13% do not routinely administer any prophylaxis. The majority not using PJP prophylaxis performed only renal transplants (67%) and listed low incidence of PJP infection as the primary reason (88%). Trimethoprim/sulfamethoxazole (TMP/SMX) was the preferred first-line agent (97%). Common second-line agents were dapsone (33%), inhaled pentamidine (33%), and atovaquone (12%). Of those that provide PJP prophylaxis following renal transplant (n = 51), the majority (51%) provide 4–6 months (Figure 1). Durations following liver transplant (n = 25) were similar; and heart transplant providers (n = 24) most commonly give 4–6 months (42%) as well. Majority of abdominal multivisceral (MVS) providers (55%) give 10–12 months and most lung transplant responders provide lifelong prophylaxis (81%). Across all organs, at least 20% provide lifetime prophylaxis. After completion of PJP prophylaxis, 36% do not restart for any reason and 54% would restart for treatment of acute graft rejection. Reported PJP infections were uncommon with 80% reporting no PJP cases in the prior 12 months and 15% reporting 1–5 infections. Only 2% reported a case of PJP infection on prophylaxis. CONCLUSION: PJP prophylaxis remains routine for the majority of pediatric SOT patients; albeit with notable practice variations. The most common duration of PJP prophylaxis following renal, liver and heart transplant was 4–6 months; while in abdominal multivisceral and lung transplant recipients, durations of either 10–12 months or lifelong prophylaxis were common. There remains a lack of evidence-based guidelines balancing the utility of PJP prevention against potential treatment side effects and unnecessary medication use. DISCLOSURES: All authors: No reported disclosures.