ELISPOT as a predictor of clinically significant cytomegalovirus infection after hematopoietic cell transplantation in letermovir recipients.

ABSTRACT: We examined cytomegalovirus-specific cell-mediated immunity (CMV-CMI) to pp65 and IE-1 at 100 days after hematopoietic cell transplantation (HCT) following discontinuation of letermovir prophylaxis using ELISPOT (T-SPOT®.CMV, Oxford-Immunotec, Abingdon, UK). We compared ELISPOT results to a laboratory-developed intracellular cytokine staining (ICS) assay and characterized thresholds for the prediction of late clinically significant (cs)CMV infection using receiver operating characteristic analysis. We identified factors associated with high (i.e., at or above threshold) CMV-CMI to both antigens. ELISPOT correlated well with polyfunctional CMV-specific T-cell immunity by ICS. We defined thresholds of 67 and 4 spots per 250,000 cells for pp65 and IE-1, respectively, for predicting late csCMV

SUBMITTER: Zamora D 

PROVIDER: S-EPMC12818887 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature