ETH47

Respiratory virus infections remain a major threat to vulnerable populations, causing millions of hospitalizations annually and significant healthcare burden.

ETH47 is a clinical-stage novel mRNA-based therapeutic that activates the body's innate immune defense against respiratory viruses. 

Chronic respiratory diseases

In chronic inflammatory lung diseases such as asthma and COPD, respiratory virus infections frequently trigger acute exacerbations. In asthma, viruses are implicated in 80% of these events, which can result in reduced lung function, hospitalizations, and accelerated disease progression.​
ETH47 represents a first-in-class therapy that addresses deficient interferon lambda production in asthmatic patients, restoring innate antiviral defenses to prevent virus-induced asthma attacks.

Pandemic preparedness

Current antivirals and vaccines are highly specific to particular virus strains, offering strong protection when the targeted virus remains unchanged. However, viruses frequently mutate, altering key proteins and reducing the effectiveness of these therapies. In contrast to these virus-targeting therapies, ETH47 is designed to be effective against virus variants including potential newly emerging pandemic viruses. This unique mode of action makes ETH47 particularly valuable for pandemic preparedness.

How ETH47 works

Delivery

ETH47 is administered as intranasal spray enabling direct delivery to the mucosal surfaces of the airway - the entry portal of respiratory viruses.


Translation

Cells translate mRNA instructions to produce interferon lambda (IFNλ), a natural signalling molecule and key antiviral protein.


Immune activation

IFNλ signals neighboring cells to activate hundreds of protective genes, each contributing different antiviral functions, from blocking viral replication to degrading viral genetic material. 


Protection

Activated cells establish a coordinated defense that blocks viral replication and spread, thereby preventing exacerbations in chronic respiratory conditions and virus transmission.


Unlike traditional antivirals that target specific viral proteins, ETH47 activates the body's natural innate immune response. Delivered as an intranasal spray, ETH47's lipid nanoparticle-formulated mRNA provides genetic instructions to respiratory cells for the production of interferon lambda (IFNλ), a protein crucial for antiviral immunity at mucosal surfaces.

This innovative approach enables ETH47 to exhibit broader antiviral activity against a multitude of viral families while reducing the risk of viral resistance. 
Building on its proven local efficacy, ETH47 holds strong potential for indication expansion to other delivery routes. This adaptability positions ETH47 as a versatile platform candidate capable of addressing a broad range of viral diseases beyond respiratory infections.


Advisory Board


A distinguished Scientific Advisory Board of world-leading experts in respiratory diseases, viral immunology, and translational research supports the clinical development of ETH47.
Their guidance ensures robust scientific validation and accelerated progress toward clinical milestones.

Prof. Sebastian Johnston

Imperial College London

Prof. Chris Brightling

University of Leicester

Prof. William Busse

University of Wisconsin

Professor Dave Singh

University of Manchester

Thomas Langenickel

Gubra

Impact and Recognition


The NoVir project is a EU4Health initiative to advance ETH47 for future pandemic prevention.

The European Comission recognized ETH47 with the STEP seal award, certifying that ETH47 is a critical high-quality technology with significant economic potential.

The Gates Foundation is supporting ETH47 to advance clinical studies and confirm transmission blocking.

Co-Funded by the European Union. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or HaDEA. Neither the European Union nor the granting authority can be held responsible for them. 

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