Language
English
Publication Date
4-8-2025
Journal
Blood Advances
DOI
10.1182/bloodadvances.2024014937
PMID
39908567
PMCID
PMC11995064
PubMedCentral® Posted Date
2-7-2025
PubMedCentral® Full Text Version
Post-print
Abstract
Epstein-Barr virus (EBV) is associated with a diverse range of lymphomas. EBV-specific T-cell (EBVST) infusions have shown promise in safety and clinical effectiveness in treating EBV-associated lymphomas; however, not all patients respond to T-cell immunotherapies. To identify EBV antigen–specific antibody responses associated with clinical outcomes, we comprehensively characterized antibody responses to the complete EBV proteome using a custom protein microarray in 56 patients with EBV-associated lymphoma who received EBVST infusions in phase 1 clinical trials. Responders (nonprogressors) and nonresponders (progressors) had distinct antibody profiles against EBV. Twenty-five immunoglobulin G (IgG) antibodies were significantly elevated in higher levels in nonresponders than in responders at 3 months after EBVST infusion. Ten of these remained significant after adjustment for sex, age, and cancer type, including LMP2A (4 variants), BGRF1/BDRF1 (2 variants), LMP1, BKRF2, BKRF4, and BALF5. Random forest analysis identified these 10 IgG antibodies as key predictors of clinical response. Paired analyses using blood samples collected at both before infusion and 3 months after EBVST infusion indicated an increase in the mean antibody level for 6 other anti-EBV antibodies (IgG [BGLF2, LF1, and BGLF3]; IgA [BGLF3, BALF2, and BBLF2/3) in nonresponders. Overall, our findings suggest that these EBV-directed antibodies as potential serological markers for predicting clinical responses to EBVST infusions and as therapeutic targets for immunotherapy in EBV-positive lymphomas. These trials were registered at www.clinicaltrials.gov as #NCT01555892 (Cytotoxic T-Lymphocytes for EBV-positive Lymphoma [GRALE]), #NCT02973113 (Nivolumab With Epstein Barr Virus Specific T Cells [EBVSTS], Relapsed/Refractory EBV Positive Lymphoma [PREVALE]), and #NCT02287311 (Most Closely Matched 3rd Party Rapidly Generated LMP, BARF1, and EBNA1 Specific CTL, EBV-Positive Lymphoma [MABEL]).
Keywords
Adult, Aged, Female, Humans, Male, Middle Aged, Antibodies, Viral, Epstein-Barr Virus Infections, Herpesvirus 4, Human, Immunoglobulin G, Immunotherapy, Lymphoma, Proteome, T-Lymphocytes
Published Open-Access
yes
Recommended Citation
Sarathkumara, Yomani D; Van Bibber, Nathan W; Liu, Zhiwei; et al., "Differential Antibody Response to Ebv Proteome Following EBVST Immunotherapy in EBV-Associated Lymphomas." (2025). Faculty, Staff and Students Publications. 6316.
https://digitalcommons.library.tmc.edu/baylor_docs/6316
Graphical Abstract