One of the current challenges of immunotherapy is the hunt for good targets, and the Claudins – a family of roughly two dozen transmembrane proteins – would appear to have a lot going for them. “Some Claudins distribute in a tissue-specific manner, and malignant transformation causes their exposition,” Cinta Hierro told the audience at the European Society of Medical Oncology (ESMO) 2024 Congress. “Others are rarely expressed in healthy tissue.”

Drawn to the potential for improved selectivity and safety profiles of PARP-1-specific inhibitors over their first-generation counterparts, Merck KGaA signed an exclusive, worldwide license deal with Jiangsu Hengrui Pharmaceuticals Co. Ltd. worth up to €1.4 billion (US$1.5 billion) to gain access to the latter’s next-generation poly (ADP-ribose) polymerase (PARP)-1 inhibitor, HRS-1167.

Drawn to the potential for improved selectivity and safety profiles of PARP-1-specific inhibitors over their first-generation counterparts, Merck KGaA signed an exclusive, worldwide license deal with Jiangsu Hengrui Pharmaceuticals Co. Ltd. worth up to €1.4 billion (US$1.5 billion) to gain access to the latter’s next-generation poly (ADP-ribose) polymerase (PARP)-1 inhibitor, HRS-1167.