Tharimmune, Inc. announced the execution of an exclusive worldwide licensing agreement with Avior Inc. d/b/a Avior Bio, LLC ("Avior") to develop, market and commercialize a clinical-stage asset, AV104 (to be renamed TH104 and hereinafter referred to as TH104). TH104 has a dual mechanism of action affecting receptors known to suppress chronic, debilitating pruritis or "uncontrollable itching". The Company intends to first seek approval in an orphan disease for the treatment of moderate-to-severe cholestatic pruritis in patients with primary biliary cholangitis ("PBC"), an orphan liver disease with no known cure in which more than 70% of patients suffer from debilitating symptoms. TH104 is embedded with the active pharmaceutical ingredient onto a proprietary transdermal buccal film which easily adheres to the inside of the mouth.

This endows TH104 with key features making it an ideal product candidate for multiple liver-related and other pruritogenic inflammatory conditions. The active molecule has a dual mechanism of action affecting both the µ -opioid receptor and the kappa opioid receptor as well as inhibiting IL-17 inflammatory cytokine expression. These opioid receptors when stimulated and/or inhibited by the body's natural ligands have been known to be involved in the body's itch circuitry.

When the itch circuitry is imbalanced in diseased conditions, pharmacological intervention can help suppress this phenomenon which occurs in patients suffering from chronic pruritis. TH104's active compound crosses into the circulation via a proprietary buccal delivery by adhering the drug-coated film inside the cheek, biodegrading in minutes and allowing the active compound to be absorbed. Buccal delivery bypasses the liver's first-pass metabolism creating higher drug concentrations in the skin, an added benefit for treating conditions such as PBC in which the liver is impaired.

Tharimmune expects to complete a phase 1 pharmacokinetic trial and a phase 2 proof-of-concept efficacy study in PBC patients suffering from chronic pruritis over approximately 12 months after aligning with FDA on trial design. Tharimmune believes TH104 may also be used for treating chronic pruritogenic conditions associated with cholestatic liver disease as well as other liver-related and non liver-related conditions including fatty and alcoholic diseases, non-alcoholic liver diseases and certain types of hepatitis. Chronic pruritis is significant in liver diseases as well as chronic kidney diseases, hemodialysis as well as atopic dermatitis.