SUZHOU, China, and ROCKVILLE, MD, US, June 7, 2021 — Ascentage Pharma (6855.HK), a globally focused, clinical-stage biotechnology company engaged in developing novel therapies for cancers, chronic hepatitis B (CHB), and age-related diseases, today presented in an oral presentation at the 57th American Society of Clinical Oncology (ASCO) Annual Meeting, updated results from a Phase II study of the MDM2-p53 inhibitor alrizomadlin (APG-115) in combination with pembrolizumab in patients with unresectable or metastatic melanoma or advanced solid tumors that have progressed on prior immuno-oncologic (IO) drugs.
As a leading Chinese biotechnology company with progressive visibility at international scientific congresses in recent years, Ascentage Pharma’s clinical study results have been selected for presentations at the ASCO Annual Meeting for the fourth year. This year, results from four of its studies clinical studies were selected for presentations at the meeting, including two oral presentations. The clinical study data from the on-going Phase II study of alrizomadlin have demonstrated a manageable safety profile and meaningful clinical antitumor activity, including one patient with a complete response (CR), an objective response rate (ORR) of 24.1% and a disease control rate (DCR) of 55.2% in the PD-1/PD-L1 inhibitor-resistant melanoma cohort. In addition, partial responses (PRs) were reported in enrolled patients with other tumor types.
“The clinical data of alrizomadlin presented in our oral presentation are encouraging, as they suggest clinical activity in hard-to-treat tumor types across multiple indications, including several without currently available standard of care, such as relapsed or refractory melanoma subtypes,” said Dr. Anthony W. Tolcher, Founder and CEO of NEXT Oncology, Director of Clinical Research at Texas Oncology, and the Global Principal Investigator of the study. “Our data provide a clinical validation of the recently published paper in Nature Immunology demonstrating that alrizomadlin synergizes with immunotherapy by sustaining STAT5 stability and controlling T-cell-mediated antitumor immunity via the novel pathway of MDM2 inhibition. This seminal publication elucidates why patients who previously failed to respond to IO therapy may derive clinical benefit from the addition of alrizomadlin to the IO agent pembrolizumab.”
“This study of alrizomadlin in combination with pembrolizumab offers a clinical validation of the therapeutic synergy between MDM2-p53 inhibitors and existing immuno-oncologic drugs and shows the potential as a new treatment option that could bring renewed hope for patients with solid tumors,” said Dr. Yifan Zhai, Chief Medical Officer of Ascentage Pharma. “At this year’s ASCO Annual Meeting, we have announced results from multiple studies, including that of Alrizomadlin, in two oral presentations and two poster presentations. I am very proud of these advances, which attest to Ascentage Pharma’s robust capabilities in global innovation. Moving forward, we will remain committed to our mission of addressing unmet clinical needs in China and around the world, and strive to accelerate our clinical programs in the hope of soon benefitting patients.”
An overview of the four abstracts presented at the 2021 ASCO Annual Meeting:
|Drug Candidate||Abstract Title||Abstract #||Format|
|First-in-human study of lisaftoclax (APG-2575), a novel Bcl-2 inhibitor (Bcl-2i), in patients (pts) with relapsed/refractory (R/R) CLL and other hematologic malignancies (HMs)||7502||Oral
|Preliminary results of a phase II study of alrizomadlin (APG-115), a novel, small-molecule MDM2 inhibitor, in combination with pembrolizumab in patients (pts) with unresectable or metastatic melanoma or advanced solid tumors that have failed immuno-oncologic (I-O) drugs||2506||Oral
|Trial in progress: A phase I/II trial of novel MDM2 inhibitor alrizomadlin (APG-115), with or without platinum chemotherapy, in patients with p53 wild-type salivary gland carcinoma||TPS6094||Poster
|Trial in progress: A multicenter phase Ib/II study of pelcitoclax (APG-1252) in combination with paclitaxel in patients with relapsed/refractory small-cell lung cancer (R/R SCLC)||TPS8589||Poster
Highlights of the oral presentation on alrizomadlin at this year’s ASCO Annual Meeting:
Preliminary results of a phase II study of alrizomadlin (APG-115), a novel, small-molecule MDM2 inhibitor, in combination with pembrolizumab in patients (pts) with unresectable or metastatic melanoma or advanced solid tumors that have failed immuno-oncologic (I-O) drugs
About Ascentage Pharma
Ascentage Pharma (6855.HK) is a globally focused, clinical-stage biotechnology company engaged in developing novel therapies for cancers, chronic hepatitis B, and age-related diseases. On October 28, 2019, Ascentage Pharma was listed on the Main Board of the Stock Exchange of Hong Kong Limited with the stock code: 6855.HK.
Ascentage Pharma focuses on developing therapeutics that inhibit protein-protein interactions to restore apoptosis, or programmed cell death. The company has built a pipeline of eight clinical drug candidates, including novel, highly potent Bcl-2, and dual Bcl-2/Bcl-xL inhibitors, as well as candidates aimed at IAP and MDM2-p53 pathways, and next-generation tyrosine kinase inhibitors (TKIs). Ascentage Pharma is also the only company in the world with active clinical programs targeting all three known classes of key apoptosis regulators. The company is conducting more than 40 Phase I/II clinical trials in the US, Australia, Europe, and China. Olverembatinib (HQP1351), the company’s core drug candidate developed for the treatment of drug-resistant chronic myeloid leukemia (CML), has been granted an Orphan Drug Designation (ODD) and a Fast Track Designation (FTD) by the US FDA. A New Drug Application (NDA) for olverembatinib has been submitted and subsequently granted Priority Review status and a Breakthrough Therapy Designation (BTD) by the Center for Drug Evaluation (CDE) in China. To date, Ascentage Pharma has obtained a total of 11 ODDs from the US FDA for 4 of the company’s investigational drug candidates.
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