Gemini Priming Attenuates Inflammation in Human Peripheral Blood Mononuclear Cells

In This Article:

– Observed response is excellent surrogate of the potential of Gemini in target indications –

– Equivalent response anticipated in Phase 1b study CKD patients –

SAN DIEGO, March 17, 2025--(BUSINESS WIRE)--Revelation Biosciences, Inc. (NASDAQ: REVB) (the "Company" or "Revelation"), a clinical-stage life sciences company that is focused on rebalancing inflammation to optimize health, announced Gemini priming attenuates the inflammatory response in human peripheral blood mononuclear cells (PBMCs) exposed to clinically relevant promoter molecules of inflammation. Revelation anticipates demonstrating the same protective effect in patients treated with Gemini in its Phase 1b clinical study, which will provide evidence of the potential efficacy of Gemini in the Company’s target indications.

In this study, human PBMCs were primed with either Gemini or placebo followed by challenge with clinically relevant promoter molecules of inflammation including high mobility box protein-1 (HMGB-1) and lipopolysaccharide (LPS) in vitro. HMGB-1 is an endogenous damage associated molecular pattern (DAMP) that is generated during tissue injury (e.g. during surgery) which drives the inflammatory response. LPS is an exogenous pathogen associated molecular pattern (PAMP) that is generated from a bacterial infection and drives the inflammatory response associated with infection (e.g. fever).

After exposure of Gemini-primed PMBCs to either HMGB-1 or LPS, levels of multiple proinflammatory and anti-inflammatory cytokines including IL-1 beta, TNF-alpha, IL-6, IL-1 Receptor Antagonist, and IL-10 were measured. Priming with Gemini significantly decreased proinflammatory cytokines and significantly increased anti-inflammatory cytokines, relative to placebo. Figure 1 shows two relevant measures following HMGB-1 and LPS challenge. This fundamental change in responsiveness at the cellular level demonstrates how Gemini will protect against inflammation-mediated damage. Revelation intends to share the full results from this study in a future publication.

As a part of the PRIME (PReconditioning IMmunostimulatory Evaluation) Phase 1b clinical study in patients with Stage 3 and 4 Chronic Kidney Disease (CKD), Revelation is collecting PBMCs from dosed patients and anticipates demonstration of the attenuated response to HMGB-1 and LPS ex vivo relative to placebo subjects. Top-line data comprising safety, tolerability, and this demonstration of protection from relevant promotors of inflammation at a cellular level are expected by mid 2025. Data from the PRIME clinical study will support future development of the GEM-CKD, GEM-AKI and GEM-PSI programs.