LONDON, March 13, 2025 /PRNewswire/ -- Virax Biolabs Group Limited ("Virax" or the "Company") (Nasdaq: VRAX), an innovative biotechnology company focused on the detection of immune responses and diagnosis of viral diseases, today announced it has presented data evaluating the role of T-Cell dysfunction in post-acute infection syndromes (PAIS) at the World Immune Regulation Meeting (WIRM) in Davos, Switzerland.
PAISs are often associated with a dysfunction of the immune system, notably progressive T-Cell exhaustion. Chronic antigen stimulation following a chronic infection can cause upregulation of T-Cell exhaustion markers. Data demonstrated that repeated stimulation of peripheral blood mononuclear cells (PBMCs) with SARS-CoV-2 and CMV peptide pools increases the proportion of CD4⁺ and CD8⁺ T-Cells expressing exhaustion markers PD-1, LAG-3, TIGIT, TIM-3, and CD39 with each stimulation cycle. T-Cell exhaustion is well documented to correlate with reduced cytokine production, particularly of pro-inflammatory cytokines, resulting in impaired immune functionality. Additionally, preliminary data from the ViraxImmune™ PAIS assay showed significant changes in the levels of a number of cytokines investigated in patients with PAIS compared to healthy controls.
"This data highlights the critical role of T-Cell exhaustion in immune dysfunction, particularly in PAIS conditions like long COVID, ME/CFS and chronic Lyme disease," said Nigel McCracken, Chief Operating Officer at Virax Biolabs. "In conjunction, we have initiated a number of clinical validation studies to evaluate the performance our T-Cell-based diagnostic in assessing the link between T-Cell dysfunction and symptoms of chronic fatigue and cognitive impairment."
A link to the poster presentation can be found
here on the Virax Biolabs corporate website.