EHA 2025 | Multiple Studies Report Encouraging Data of Olverembatinib in Ph+ ALL

ROCKVILLE, Md. and SUZHOU, China, June 15, 2025 (GLOBE NEWSWIRE) -- Ascentage Pharma (NASDAQ: AAPG; HKEX: 6855), a global biopharmaceutical company dedicated to addressing unmet medical needs in cancers, announced that results from 13 studies of its core assets, including the novel drug olverembatinib (HQP1351) and the investigational EED inhibitor APG-5918, have been reported at the 2025 European Hematology Association (EHA) Annual Congress.

Notably, in multiple studies presented at this year’s EHA Annual Congress, the third-generation tyrosine kinase inhibitor (TKI) olverembatinib showed broad therapeutic potential and demonstrated particular clinical benefit in the treatment of Philadelphia chromosome-positive (Ph+) acute lymphoblastic leukemia (ALL). According to the results, olverembatinib demonstrated high complete remission (CR) and complete molecular response (CMR) rates, as well as favorable tolerability in the first-line treatment of newly diagnosed and relapsed/refractory Ph+ ALL, and specific subtypes of some hematologic malignancies (e.g., myeloid/lymphoid neoplasm with FGFR1 rearrangement). Furthermore, studies on various combinations of olverembatinib (with venetoclax plus azacitidine, the VP regimen, blinatumomab, or inotuzumab ozogamicin) have shown encouraging results that revealed olverembatinib’s potential in offering more treatment options and improved long-term prognoses to patients with Ph+ ALL.

In addition, a preclinical study of the investigational EED inhibitor APG-5918, another key asset in Ascentage Pharma’s pipeline, was featured in a poster presentation at the Congress. These data showed the potent antitumor activity of APG-5918 in T-cell lymphoma and support further clinical development of the agent.

Highlights of select abstracts presented at EHA 2025 are as follows (for detailed results from all 13 studies of the company's assets, please visit the official EHA website):

Efficacy and Safety of Regimen with Olverembatinib and Blinatumomab for the Frontline Treatment of Ph-Positive or Ph-Like Acute Lymphoblastic Leukemia

• Abstract#: PS1367
• Format: Poster Presentation
• Principal Authors: Prof. Hongsheng Zhou, Nanfang Hospital, Southern Medical University; Xiuli Xu, Nanfang Hospital, Southern Medical University
  
  
• Highlights:
  
  
  • This is a single-arm, single-center, prospective study that assessed the clinical experience with olverembatinib in combination with blinatumomab as a first-line treatment for patients with Ph+ or Ph-like ALL.
  • Results from this study show that with a median follow-up duration of 17 months, all patients achieved CR following one cycle of treatment. At 18 months, the overall survival (OS) rate was 100% and the event-free survival (EFS) rate was 91.6%. The regimen was well tolerated and no patient experienced cardiovascular events. Notably, administration of olverembatinib and blinatumomab was not interrupted throughout the treatment course with no dose reduction required.
  • These findings suggest that the combination of olverembatinib and blinatumomab offers promising clinical benefits and an optimal safety profile in patients with Ph+ or Ph-like ALL, thus representing a promising chemotherapy-free treatment option for patients with Ph+ ALL.

Combination of Olverembatinib and VP Regimen as First-Line Therapy for Adult Patients with Philadelphia Chromosome-Positive Acute Lymphoblastic Leukemia: A Single-Arm, Multicentre, Phase 2 Trial