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BACKGROUND We conducted a retrospective cohort study using United Network of Organ Sharing (UNOS) data to determine the effect of the calculated panel reactive antibody (cPRA) value on waitlist outcomes for lung transplant candidates. MATERIAL AND METHODS We divided lung transplant candidates into groups based on their cPRA value at the time of waitlist activation (0-25%, 25.1-50%, 50.1-75%, and 75.1-100%) and compared each group's waitlist outcomes to the lowest quartile ("minimally sensitized") group. The primary outcome was lung transplantation and the secondary outcome was waitlist mortality (a composite of death on the waitlist/delisting for clinical deterioration). RESULTS Compared to the minimally sensitized group, candidates with a cPRA value of 25.1-50% did not have a significantly different likelihood of undergoing lung transplant or waitlist mortality, candidates with a cPRA value of 50.1-75% were 25% less likely to undergo lung transplant and 44% more likely to die on the waitlist, and candidates with a cPRA value of 75.1-100% were 52% less likely to undergo lung transplant and 92% more likely to die on the waitlist. CONCLUSIONS CPRA values of greater than 50% are associated with significantly lower rates of transplantation and higher waitlist mortality.

Effect of Calculated Panel Reactive Antibody Value on Waitlist Outcomes for Lung Transplant Candidates