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Ascentage Pharma Announces Clinical Trial Collaboration Agreement with MSD to Evaluate APG-115 in Combination With KEYTRUDA® (pembrolizumab) in Advanced Solid Tumors

SUZHOU, China, and ROCKVILLE, Md., July 6, 2020 /PRNewswire/ -- Ascentage Pharma (6855.HK), a global, clinical-stage biotechnology company developing novel therapies for cancers, chronic hepatitis B (CHB), and senesce diseases, today announced a clinical collaboration with MSD to evaluate the combination of APG-115, Ascentage's MDM2-p53 inhibitor, and KEYTRUDA(pembrolizumab), MSD'sA anti-PD-1 therapy, for the treatment of patients with advanced solid tumors.
Ascentage Pharma Announces Clinical Trial Collaboration Agreement with MSD to Evaluate APG-115 in Combination With KEYTRUDA® (pembrolizumab) in Advanced Solid Tumors
Under the agreement, Ascentage will sponsor an open-label, multicenter, phase Ib/II study (NCT03611868) is designed to evaluate the safety and efficacy of APG-115 with KEYTRUDA in multiple cohorts of solid tumors (i,e., NSCLC, melanoma, Urothelial cancer, Liposarcoma, MPNST and ATM mutated/p53 WT tumors resistant or relapsed to PD-1/PD-L1 treatment or without previous PD-1/PD-L1 treatment). The Phase II portion of the study has initiated and is expected to enroll 80 patients at multiple sites in the US. A MSD and Ascentage will use a joint development committee to exchange information about the study. Preclinical studies demonstrated that APG-115 promoted the production of proinflammatory cytokines in T cells, enhanced CD4+ T cell activation, and increased PD-L1 expression on various tumor cells. Enhanced antitumor activity was demonstrated in various tumor models after APG-115 was combined with PD-1 blockade. Results of the phase 1b portion of this trial was recently published at ASCO2020 and demonstrated that APG-115 in combination with pembrolizumab is well-tolerated, with encouraging anti-tumor effects in several tumor types. "We are excited to collaborate with MSD, a pharmaceutical industry leader. APG-115 is a key drug candidate in our development pipeline targeting apoptosis, with great potential in the treatment of advanced solid tumors," said Dr. Dajun Yang, Chairman & CEO of Ascentage Pharma. "Based on the promising Phase Ib data, we are looking forward to working closely with MSD to further study the combination of APG-115 with KEYTRUDA, potentially offering more effective treatment options to patients with advanced solid tumors."
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