AdJane Biosciences

AdJane Details Plan to Add Mucosal Booster to mRNA Vaccine Regimens

Delft – September 15, 2026 -- AdJane Biosciences has published a White Paper outlining a strategy to add a proprietary intranasal booster to existing intramuscular respiratory vaccines, targeting the mucosal immunity gap left by current mRNA shots.

Phase I data show intranasal booster induced significant nasal IgA responses in mRNA-primed subjects

In a post-hoc subset of participants from AdJane's completed Phase I study who had previously received Pfizer and/or Moderna COVID-19 mRNA vaccines, a subsequent intranasal dose of an Nm-nOMV vaccine displaying SARS-CoV-2 Spike was well tolerated and generated significant nasal IgA responses. AdJane says this provides initial human evidence for a heterologous prime-boost approach: systemic priming via existing intramuscular vaccines followed by a mucosal Nm-nOMV booster delivered intranasally.

AdJane Unveils Mucosal Booster Strategy for Respiratory Vaccines

Delft – September 15, 2026 -- AdJane Biosciences has published a white paper outlining a strategy to add mucosal immune stimulation to existing intramuscular respiratory vaccine regimens, using its clinically validated Nm-nOMV platform derived from Neisseria meningitidis outer membrane vesicles.

AdJane targets the mucosal gap left by intramuscular respiratory vaccines

Current intramuscular respiratory vaccines induce strong systemic immunity and protect against severe disease, but generate limited protection at the respiratory mucosa, the point where pathogens first enter the body. The company's white paper, titled 'Boosting mRNA: Mucosal Immunity and a Platform Beyond It,' argues that mucosal IgA responses can reduce transmission at the point of entry, a target public health bodies are pursuing alongside severe-disease prevention.