Merck strengthens oncology pipeline through strategic partnership with Hengrui

Compared with first-generation PARP inhibitors, the selectivity and differentiated safety profile of PARP1-specific inhibitors could offer the opportunity to expand their therapeutic impact in established and new indications. HRS-1167 has shown encouraging signs of clinical activity and patient benefit in Phase I trials as a monotherapy and has higher potential to combine with chemotherapy as well as novel agents, compared with previous attempts with first-generation PARP inhibitors. This aligns with the company’s overarching development approach of DNA damage response (DDR) inhibitors, exploring their synergistic activity and maximizing their potential impact in combination with other anticancer therapies and approaches. Merck is researching the potential to treat cancer through inhibition of multiple targets in the DDR cascade, including ATR, ATM, DNA-PK, and PARP.

Additionally, should the company exercise its option, SHR-A1904 would complement Merck’s internal preclinical and clinical ADC portfolio applying different linker payload technologies. The first ADC developed using Merck’s own technology, M9140, a CEACAM5-targeting ADC, is being evaluated in an ongoing Phase Ia/b study in patients with metastatic colorectal cancer.

"Given the high unmet need in oncology, we are excited to work closely with Merck to bring Hengrui's innovations to cancer patients worldwide,” said Frank Jiang, board member and Chief Strategy Officer of Hengrui Pharma. “Partnering with Merck on our PARP franchise is an important milestone on Hengrui's globalization journey. We look forward to advancing our molecules rapidly through development and reaching patients in need.” 

Under the terms of the agreement, Merck will provide Hengrui with an upfront payment of €160 million. Hengrui will receive payments for the achievement of certain development, regulatory and commercial milestones and tiered royalties on net sales by Merck. Potential payments may total up to €1.4 billion.