Atriva - Zapnometinib (INN) Drug
The company’s lead drug candidate zapnometinib targets the intracellular Raf/MEK/ERK signaling pathway. This pathway is central for replication of many RNA viruses, such as the influenza virus, Hantavirus or respiratory syncytial virus (RSV) and also SARS-CoV-2, the virus that causes COVID-19. In influenza virus infected cells, the interaction of zapnometinib with MEK (MAPK/ERK kinase) prevents export of the viral genome protein complexes (ribonucleoprotein, RNP) from the nucleus to the cytoplasm, thus blocking the formation of functional new viral particles. This ultimately reduces the viral load in the body.
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In addition, zapnometinib has the potential to modulate the pro-inflammatory cytokine response of the body, avoiding overshooting cytokine response that can be caused by such viral infections. MEK inhibition can inhibit the gene expression of some of the cytokines involved, like TNF-α, IL-1ß, IP-10, IL-8, MCP-1 and MIP-1a, and thus mitigate the overactive inflammatory response in the lungs of patients who are severely ill with influenza or COVID-19.
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