Epstein Barr Virus

The main objective of this trial is to evaluate the safety and immunogenicity of mRNA-1189 after intradermal and intramuscular delivery.

RACSMEI addresses the high burden of infectious diseases in low- and middle-income countries, including Cambodia, where limited surveillance and laboratory capacity often obscure etiologies and transmission dynamics. This knowledge gap hinders the design of effective prevention and control strategies. RACSMEI will improve understanding across multiple pathogens using a multidisciplinary One Health approach. We will answer key questions on burden, ecology, transmission and population immune status to inform targeted and culturally appropriate interventions. The project combines a nationally representative One Health survey, social-science methods, and multiplex, diverse diagnostics to efficiently test for 57 priority pathogens, including zoonotic and vector-borne agents, vaccine-preventable and elimination-targeted diseases, enteric, respiratory, and environmentally transmitted pathogens and selected neglected tropical diseases and parasites relevant to Cambodia. Mathematical modelling will reconstruct and forecast transmission dynamics and assess the potential impact of future public-health strategies. By integrating intersectoral data and innovative methods, RACSMEI will generate actionable evidence for public-health authorities, support precision One Health interventions, and help reduce disease burden in affected communities. The project also aims to ensure the transferability of methods and insights to other countries facing similar challenges.

The primary objective is to determine the safety and feasibility of administering R-MVST cells to patients with refractory viral reactivation and/or symptomatic disease caused by Epstein Barr Virus (EBV), cytomegalovirus (CMV), adenovirus (ADV) or BK virus. R-MVST cells will be generated on-demand from the closest partially human leukocyte antigen (HLA)-matched (minimum haploidentical) healthy donors or from the original allo-transplant donor if available. The investigator will closely monitor the recipients for potential toxicities including graft-versus-host disease (GVHD) post-infusion. Secondary objectives are to determine the effect of R-MVST infusion on viral load, possible recovery of antiviral immunity post-infusion and for evidence of clinical responses and overall survival. Recipients will be monitored for secondary graft failure at day 28 post R-MVST infusion.

This study is a prospective, self-controlled, multicenter clinical trial. All participants will be tested for Epstein-Barr virus (EBV) associated biomarkers, including the two-antibody method (VCA-IgA and EBNA1-IgA), BNLF2b total antibodies (P85-Ab), and plasma EBV DNA. Furthermore, novel screening biomarkers, such as next-generation sequencing for EBV and castoff cells using nasopharyngeal swabs, will be explored. First, it aims to investigate whether plasma EBV DNA testing or the P85-Ab testing can achieve higher sensitivity than the current standard two-antibody method testing while maintaining specificity in NPC screening, thereby identifying the optimal initial NPC screening strategy. Based on the determined optimal initial screening strategy, the study will validate the proposed two-step method (subjects first undergo two-antibody method testing and P85-Ab testing; those positive for either one biomarker above proceed to plasma EBV DNA testing; subjects positive in both steps are defined as high-risk and receive endoscopic examinations with or without biopsy) compared with the single-step method (subjects simultaneously undergo two-antibody method testing, P85-Ab testing, and plasma EBV DNA testing; subjects with any positive biomarker undergo endoscopic examinations with or without biopsy) and each single screening testing. The aim is to determine whether two-step method can further improve the positive predictive value (PPV) while maintaining non-inferior sensitivity, thereby enhancing screening efficiency, reducing the rate of invasive procedures (such as endoscopic biopsies), and lowering medical costs and insurance burdens.

How does plasma Epstein-Barr Virus (EBV) DNA level change during definitive radiation therapy for nasopharyngeal carcinoma (NPC) in the teenage and young adult cohort and does it correlate with outcomes?

Previous studies have proved that the lytic reactivation of latent Epstein-Barr virus (EBV) was significantly associated with the onset of Graves'disease (GD), however, the morbidity of GD and recurrence rate of hyperthyroidism after antithyroid drugs treatment due to lytic reactivation of EBV is not understood. We will recruit patients with newly diagnosed GD and recurrence of hyperthyroidism after antithyroid drugs treatment. In order to confirm lytic reactivation of EBV, the number of EBV DNA copies，mRNA and protein expression of immediate-early, early and late lytic EBV genes，EBV +TRAb+cells will be tested. The proportion of lytic reactivation of EBV in newly diagnosed GD and recurrence of hyperthyroidism was evaluated.

EBV-HLH is a rare disease with high mortality, especially for those with intestinal involvement. In order to reduce disease burden and improve survival of these patients, we conduct a prospective observational study to explore the efficacy and safety of segmental resection combined with the DEP regimen.

The efficacy and safety of L-DEP (PEG-aspargase, liposomal doxorubicin, etoposide, and methylprednisolone) regimen combined with PD-1 Antibody an induction therapy for Epstein-Barr virus (EBV)-positive lymphoma-associated hemophagocytic lymphohistiocytosis.