Cytomegalovirus (CMV)-Specific Cell-Mediated Immunity for Prediction of Postprophylaxis CMV Disease in a Phase 3 Trial of Letermovir Versus Valganciclovir Prophylaxis in Donor CMV-Seropositive/Recipient CMV-Seronegative Kidney Transplant Recipients

Positive QFT-CMV results (pooled) were detected: baseline-1.2%, week 12-2.6%, week 28-7.7%, and week 52-28.9%. The distribution of positive results with letermovir and valganciclovir was comparable, except at week 28 (letermovir 2.2% and valganciclovir 12.8%). Among adult CMV high-risk D+R- KTRs who received prophylaxis, CMV-CMI by QFT-CMV increased over time. The result at the end of prophylaxis had limited clinical utility for identifying the risk for subsequent CMV disease.