Under the terms of the agreement, Gilead will make a $85 million upfront payment to, and a $35 million equity investment at a premium in, Jounce upon closing. In addition, Jounce may receive up to an additional $685 million in future clinical, regulatory and commercial milestone payments. Jounce will also be eligible to receive royalties ranging from high single digit to mid-teens based upon worldwide sales, subject to certain adjustments.
Jounce will lead development of JTX-1811 through IND clearance, and thereafter, Gilead will have the sole right to develop JTX-1811. JTX-1811 is not approved anywhere globally. Its efficacy and safety have not been established.
This transaction, which is expected to close in the second half of 2020, is subject to applicable antitrust clearance under the Hart-Scott Rodino Antitrust Improvements Act and other customary closing conditions.
JTX-1811 is a monoclonal antibody designed to selectively deplete immunosuppressive tumor-infiltrating T regulatory (TITR) cells. The target of JTX-1811 is CCR8, a chemokine receptor enriched on TITR cells. When JTX-1811 binds to CCR8, it targets TITR cells for depletion by enhanced antibody-dependent cellular cytotoxicity mechanism. The antibody remains on track for filing an Investigational New Drug (IND) application in the first half of 2021.