Ph-Like Acute Lymphoblastic Leukemia

SUZHOU, China and ROCKVILLE, Md., June 17, 2024 /PRNewswire/ -- Ascentage Pharma (6855.HK), a global biopharmaceutical company engaged in developing novel therapies for cancer, chronic hepatitis B (CHB), and age-related diseases, announced today that updated results from three studies of olverembatinib (HQP1351), the first China-approved third-generation BCR-ABL1 inhibitor, have been released in posters at the 2024 European Hematology Association Hybrid Congress (EHA 2024), taking place in Madrid, Spain. Building on the data reported at the 2023 American Society of Hematology Annual Meeting, Ascentage Pharma has released the updated median 1-year follow-up data of olverembatinib in patients with chronic myeloid leukemia (CML) and Philadelphia-positive acute lymphoblastic leukemia (Ph+ ALL). In the results, olverembatinib showed excellent durable clinical benefits and favorable long-term tolerability in patients who had been treated with multiple TKIs (including those who were resistant to ponatinib and/or asciminib), regardless of whether they harbored the T315I mutation. Dr. Elias Jabbour, MD, Department of Leukemia, The University of Texas MD Anderson Cancer Center, and the Principal Investigator of the study, commented, "The study on olverembatinib demonstrates significant efficacy and a manageable safety profile in patients with heavily pretreated CML and Ph+ ALL, including those with resistance or intolerance to ponatinib and asciminib. These findings indicate that olverembatinib has the potential to be a valuable treatment option for this challenging patient population, warranting further investigation through long-term studies to confirm its clinical benefits." "Updates released at this year's EHA Hybrid Congress, combined with previously reported data, reaffirmed the enormous potential of olverembatinib in patients who are resistant to ponatinib and asciminib," said Dr. Yifan Zhai, Chief Medical Officer of Ascentage Pharma. "Moving forward, we will expeditiously advance the clinical development of this global best-in-class drug in efforts to bring a new treatment option to patients as soon as possible." Olverembatinib is a global best-in-class drug developed by Ascentage Pharma. As the first China-approved third-generation BCR-ABL1 inhibitor, olverembatinib has been approved for two indications in China, including adult patients with tyrosine kinase inhibitor (TKI)-resistant chronic-phase CML (CML-CP) or accelerated-phase CML (CML-AP) harboring the T315I mutation; and adult patients with CML-CP resistant to and/or intolerant of first-and second-generation TKIs. Olverembatinib is jointly commercialized in China by Ascentage Pharma and Innovent Biologics. A global registrational Phase III trial of olverembatinib in treatment-naïve patients with Ph+ ALL is currently ongoing and could potentially lead olverembatinib to become the first TKI approved in China for first-line treatment of Ph+ ALL. The EHA Hybrid Congress is the largest gathering of the hematology field in Europe. It showcases the most cutting-edge research and state-of-the-art innovative therapies, attracting over 10,000 clinical experts and researchers from more than 100 countries every year. This year, in addition to the latest data on olverembatinib, Ascentage Pharma also released those of its Bcl-2 inhibitor lisaftoclax (APG-2575) and the EED inhibitor APG-5918. Highlights of those data of olverembatinib presented at EHA 2024 are as follows: Olverembatinib Overcomes Ponatinib and Asciminib Resistance in Patients (Pts) with Heavily Pretreated Chronic Myeloid Leukemia (CML) and Philadelphia-Positive Acute Lymphoblastic Leukemia (Ph+ ALL) Abstract#: P722 Presentation Type: Poster presentation Topic: Chronic myeloid leukemia – Clinical Date & Time: Friday June 14, 2024, 18:00 - 19:00 CEST Presenting Author: Dr. Elias Jabbour, Department of Leukemia, The University of Texas MD Anderson Cancer Center Highlights: Background: Existing preclinical and clinical data show that olverembatinib, an investigational, novel, potent BCR:: ABL1 TKI, has strong antitumor activity in CML or Ph+ ALL. Introduction: This multicenter, open-label study was designed to assess the safety, efficacy, and pharmacokinetic (PK) profiles of olverembatinib in patients with heavily TKI (including ponatinib and asciminib) pretreated CML or Ph+ ALL. Patient enrollment and methods: As of January 2, 2024, a total of 80 heavily TKI pretreated patients, including 62 patients with CML-CP and 18 patients with advanced Ph+ leukemia (CML-AP, CML-BP, Ph+ ALL), were enrolled. These patients were randomly assigned to receive orally administered olverembatinib at 30, 40, or 50 mg once every other day (QOD) in 28-day cycles. Efficacy results: 1) In patients with CML-CP: 31/51 (60.8%) patients achieved a complete cytogenetic response (CCyR), and 25/59 (42.4%) achieved a major molecular response (MMR). No differences in the response rates of patients with/without the T315I mutation were observed. In patients who failed prior treatment with ponatinib, 15/26 (57.7%) achieved a CCyR (including 10/19 [52.6%] patients with prior resistance to ponatinib and 3/4 [75.0%] with prior intolerance of ponatinib), and 11/30 (36.7%) patients achieved an MMR (including 9/21 [42.9%] patients with prior resistance to ponatinib and 1/6 [16.7%] with prior intolerance of ponatinib). In patients who were asciminib-resistant, 4/8 (50.0%) achieved a CCyR, and 4/12 (33.3%) achieved an MMR. 2) In patients with advanced Ph+ leukemia: 3/14 (21.4%) patients achieved a CCyR, and 3/17 (17.6%) patients achieved an MMR. Safety results: 72 (90.0%) patients experienced treatment emergent adverse events (TEAEs) during their treatment with olverembatinib. Most of the TEAEs were mild to moderate in severity. Common grade≥3 TEAEs included thrombocytopenia (17.5%), neutropenia (12.5%), and increases in blood creatine phosphokinase (12.5%). Serious adverse events occurring in ≥3 (3.8%) patients included atrial fibrillation, COVID-19 infection, febrile neutropenia, and intestinal obstruction. No treatment-related adverse events (TRAE) led to death. Two (2.5%) patients experienced Grade 1 treatment-related arterial occlusive events, one each with angina pectoris and cardiac failure. Conclusions: Olverembatinib was efficacious and well tolerated in patients with heavily TKI pretreated CML-CP and advanced Ph+ leukemias, including ponatinib- or asciminib-resistant/intolerant disease. Combination of Third Generation TKI Olverembatinib and Chemotherapy or Blinatumomab for New Diagnosed Adult Ph+ ALL Patients Abstract#: P427 Presentation Type: Poster presentation Topic: Acute lymphoblastic leukemia – Clinical Date & Time: Friday June 14, 2024, 18:00 - 19:00 CEST Presenting Author: Junjie Chen, Nanfang Hospital, Southern Medical University Highlights: Background: TKIs have improved the long-term outcomes of patients with Ph+ ALL, but resistance to TKIs remains a challenge. Previous reports showed that third-generation TKI ponatinib, combined with chemotherapy, results in a modest rate of complete molecular response (CMR) of 75% in 3 months. Our recent study, a front-line combination of olverembatinib and the PDT-ALL-2016 regimen in Ph+ ALL, had shown a promising outcome, achieving a CMR rate of 84.6% at day 90. Furthermore, the combination of TKI and blinatumomab (BITE) as a chemotherapy-free treatment approach has demonstrated safety and effectiveness. Introduction: This study explored the clinical efficacy of the front-line combination of olverembatinib and chemotherapy (TKI+chemotherapy) or olverembatinib and blinatumomab (TKI+BITE) for the treatment of Ph+ ALL. Patient enrollment and methods: From Jan 2022 to Dec 2023, 31 patients with newly diagnosed Ph+ ALL treated with olverembatinib (40mg once every other day) with pediatric-inspired chemotherapy (n=19; PDT-ALL-2016 protocol) or blinatumomab (n=12; administered for a total of 2 weeks followed by 2 weeks of break) were enrolled. The median age was 40 years old, 15 (48.4%) patients had one comorbid disease, and 8 (25.81%) patients had≥2 comorbid diseases. Efficacy results: With a median follow-up of 16 months, all patients achieved a complete remission (CR) after one cycle of treatment. For the entire cohort, 28 (90.3%) patients achieved a CMR within 3 months. Among them, 16 (84.2%) and 12 (100.0%) patients in the TKI + chemotherapy and TKI + BITE cohorts achieved a CMR within 3 months, respectively. The 1-year overall survival (OS) rate was 93.1% and event-free survival (EFS) rate was 78.4% in the entire cohort. For the TKI + chemotherapy cohort, the 1-year OS rate was 96.2% and the EFS rate was 71.5%. In the TKI + BITE cohort, the 1-year OS rate was 100.0% and the EFS rate was 90.0%. Safety results: Adverse events were observed in 10 (32.3%) patients: 3 patients (9.6%) developed septic shock during treatment, 2 patients (6.4%) experienced mild pancreatitis, 2 patients (6.4%) experienced Pneumocystis jiroveci pneumonia, 2 patients (6.4%) experienced grade 2 cytokine release syndrome (CRS), and 1 patient (3.2%) developed pulmonary embolism. Conclusions: This study showed the combination of olverembatinib and chemotherapy or blinatumomab for treating adult patients with Ph+ ALL. Among the 31 patients enrolled, a notable rate of 1-year survival and CMR was observed, which holds promise for improved long-term survival. Both the TKI + chemotherapy and TKI + BITE cohorts showed good clinical outcomes, although the TKI + BITE cohort exhibited better survival than the TKI + chemotherapy cohort. It is important to note that, although 74.19% of enrolled patients had at least one comorbid disease and the median age was 40 years, the safety profile was acceptable. Patient Reported Outcomes in Adults with TKI-Resistant Chronic Myeloid Leukemia Receiving Olverembatinib-Therapy Abstract#: P1862 Presentation Type: e-Poster presentation Topic: Chronic myeloid leukemia – Clinical Date & Time: 14, 2024, 18:00 - 19:00 CEST Presenting Author: Lu Yu, Peking University People's Hospital Highlights: Background: Third-generation (3G) TKIs have improved the outcomes of patients with TKI-resistant CML. However, there are very limited data on patient reported outcomes in adults receiving 3G TKIs such as olverembatinib. Introduction: The aim of this study was to assess health-related quality of life (HRQoL), anxiety and depression symptoms and identify variables associated with them in patients with TKI-resistant CML receiving olverembatinib-therapy. Patient enrollment and methods: Subjects with TKI-resistance receiving olverembatinib in the multicenter study were invited to complete the European Organization for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire (QLQ-C30), the Self-Rating Anxiety Scale (SAS) and the Self-Rating Depression Scale (SDS) questionnaires at baseline and regularly during the study treatment. The time trends of the patient reported outcomes were estimated by a linear model using the generalized estimating equation based on the independent working correlation matrix. The generalized estimating equation model was utilized to assess the impact of patients' characteristics at baseline and treatment response during olverembatinib therapy on HRQoL, SAS, and SDS. A total of 159 patients in CP or AP CML were included in this study. Median (range) age was 42 (20-74) years. 104 (65%) patients were male. Interval from diagnosis of CML to initiation of olverembatinib therapy was 5 (0.3-23) years. 77 (48%) patients received olverembatinib therapy within 5 years from the diagnosis of CML. All patients completed the QLQ-C30 questionnaire; and 115 completed the SAS and SDS questionnaires. Survey results: Assessed by the EORTC QLQ-C30 questionnaire, the top 3 severe symptom burdens at baseline were financial difficulties, fatigue, and insomnia. Eight scale items including global health, physical functioning, emotional functioning, fatigue, pain, dyspnea, diarrhea and financial difficulties improved significantly during olverembatinib therapy. No scale deteriorated significantly. In multivariate analysis, age < 40 years was associated with better improvement of social functioning (p = 0.021); CP (vs. AP), better improvement of dyspnea (p = 0.028) and diarrhea (p = 0.042); achieving MMR, better improvement of global health (p = 0.005), nausea and vomiting (p = 0.009), and diarrhea (p = 0.001). At baseline, 96 (84%) patients were normal according to the SAS score; and 19 (16%) had mild or moderate anxiety symptoms. 64 (56%) patients were normal according to the SDS score; 37 (32%) had mild depression symptoms; and 14 (12%), moderate or severe depression symptoms. SAS score was decreased significantly during olverembatinib therapy over time (p < 0.001) while the SDS score did not change significantly. At 36 months on olverembatinib therapy, 78 (95%) and 48 (59%) patients had no anxiety and depression symptoms assessed by SAS and SDS questionnaires, respectively. There was no variable identified that impacted the change of SAS score during olverembatinib therapy. Conclusions: HRQoL and anxiety symptoms significantly improved over time during olverembatinib therapy in patients with TKI-resistant CML. Younger age, CP than AP, and achieving MMR on olverembatinib therapy were associated with better improvements of HRQoL. *Olverembatinib is an investigational drug that has not been approved for any indication outside the Chinese mainland. About Ascentage Pharma Ascentage Pharma (6855.HK) is a globally focused biopharmaceutical 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 9 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 registrational phase III studies, in the US, Australia, Europe, and China. Ascentage Pharma has been designated for multiple Major National R&D Projects, including five Major New Drug Projects, one New Drug Incubator status, four Innovative Drug Programs, and one Major Project for the Prevention and Treatment of Infectious Diseases. Olverembatinib, the company's core drug candidate developed for the treatment of drug-resistant chronic myeloid leukemia (CML) and the company's first approved product in China, has been granted Priority Review Designations and Breakthrough Therapy Designations by the Center for Drug Evaluation (CDE) of China National Medical Products Administration (NMPA). To date, the drug had been included into the China 2022 National Reimbursement Drug List (NRDL). Furthermore, olverembatinib has been granted an Orphan Drug Designation (ODD) and a Fast Track Designation (FTD) by the US FDA, and an Orphan Designation by the EMA of the EU. To date, Ascentage Pharma has obtained a total of 16 ODDs from the US FDA and 1 Orphan Designation from the EMA of the EU for 4 of the company's investigational drug candidates. Leveraging its robust R&D capabilities, Ascentage Pharma has built a portfolio of global intellectual property rights and entered into global partnerships with numerous renowned biotechnology and pharmaceutical companies and research institutes such as UNITY Biotechnology, MD Anderson Cancer Center, Mayo Clinic, Dana-Farber Cancer Institute, MSD, and AstraZeneca. The company has built a talented team with global experience in the discovery and development of innovative drugs and is setting up its world-class commercial manufacturing and Sales & Marketing teams. One pivotal aim of Ascentage Pharma is to continuously strengthen its R&D capabilities and accelerate its clinical development programs, in order to fulfil its mission of addressing unmet clinical needs in China and around the world for the benefit of more patients. Forward-Looking Statements The forward-looking statements made in this article relate only to the events or information as of the date on which the statements are made in this article. Except as required by law, Ascentage Pharma undertakes no obligation to update or revise publicly any forward-looking statements, whether as a result of new information, future events, or otherwise, after the date on which the statements are made or to reflect the occurrence of unanticipated events. You should read this article completely and with the understanding that our actual future results or performance may be materially different from what we expect. In this article, statements of, or references to, our intentions or those of any of our Directors or our Company are made as of the date of this article. Any of these intentions may alter in light of future development. SOURCE Ascentage Pharma

SUZHOU, China, and ROCKVILLE, Md., Dec. 10, 2023 /PRNewswire/ -- Ascentage Pharma (6855.HK), a global biopharmaceutical company engaged in developing novel therapies for cancer, chronic hepatitis B (CHB), and age-related diseases, announced today that it has released updated data from a US study of the company's novel drug candidate, olverembatinib (R&D code: HQP1351), in patients with refractory chronic myeloid leukemia (CML) and Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph+ ALL), in a Poster Presentation at the 65th American Society of Hematology (ASH) Annual Meeting, taking place in San Diego, CA, the United States. The ASH Annual Meeting is one of the largest gatherings of the international hematology community, bringing together the most cutting-edge scientific research and latest data of investigational therapies that representleading scientific and clinical advances in the global hematology field. Garnering growing interest from the global research community, multiple studies of Ascentage Pharma's key drug candidates (olverembatinib and lisaftoclax) have been selected for presentations at this year's ASH Annual Meeting, including two Oral Presentations on olverembatinib. This is the sixth consecutive year in which clinical results on olverembatinib have been selected for Oral Presentations at the ASH Annual Meeting. After releasing preliminary results of the US study in an Oral Report at last year's ASH Annual Meeting, this year Ascentage Pharma presented updated data from a larger patient sample that reaffirmed the favorable clinical benefit and tolerability of olverembatinib, as a monotherapy and in combinations, in heavily pretreated patients with CML and Ph+ ALL, particularly those who have failed prior treatment with the third-generation TKI ponatinib or the allosteric STAMP inhibitor asciminib. Prof. Elias Jabbour, MD, Department of Leukemia, The University of Texas MD Anderson Cancer Center, and the Principal Investigator of the study, commented, "Once again, the follow-up data of study HQP1351CU101 showed olverembatinib' s excellent treatment response, especially in patients who were resistant to ponatinib or asciminib. Olverembatinib will provide an effective new treatment option for CML and Ph+ ALL patients." "Building on the encouraging results presented at last year's ASH Annual Meeting, the data released this year validated olverembatinib's promising therapeutic potential in patients resistant to ponatinib or asciminib. These encouraging results once again underscored the potential of this China-developed global best-in-class drug in addressing the unmet needs of patients with CML and Ph+ ALL worldwide," said Dr. Yifan Zhai, Chief Medical Officer of Ascentage Pharma. "Remaining committed to the mission of the addressing unmet clinical needs in China and around the world, we will expedite our clinical development programs to bring more safe and effective therapies to patients in need." Highlights of the study presented at ASH 2023: Update of Olverembatinib (HQP1351) Overcoming Ponatinib and/or Asciminib Resistance in Patients (Pts) with Heavily Pretreated/Refractory Chronic Myeloid Leukemia (CML) and Philadelphia Chromosome-Positive Acute Lymphoblastic Leukemia (Ph+ ALL) Format: Poster Presentation Abstract: #1798 Session: 632. Chronic Myeloid Leukemia: Clinical and Epidemiological: Poster I Time: December 9, 2023, Saturday, 5:30 PM – 7:30 PM (Pacific Time) / December 10, 2023, Sunday, 9:30 AM – 11:30 AM (Beijing Time) Highlights: Background: Patients with CML who failed on first- and second-generation tyrosine kinase inhibitors (TKIs) have a poor prognosis. Olverembatinib, a novel third-generation TKI, has shown strong antitumor activity in patients with CML and Ph+ ALL. This presentation reports on the safety, efficacy, and pharmacokinetics (PK) of olverembatinib in patients with CML and Ph+ ALL outside of China, particularly in patients previously treated with third-generation TKI ponatinib and/or allosteric STAMP inhibitor asciminib. Methods: Olverembatinib was administered orally once every other day (QOD). In the monotherapy cohort, patients were enrolled after treatment failures on at least 2 prior TKIs (no limit on the number of prior TKIs for patients harboring the T315I mutation) and randomized to receive olverembatinib QOD at 30, 40, or 50 mg, in 28-day cycles. In the combination cohort, patients with Ph+ B-cell precursor ALL (BCP ALL) or lymphoid CML-BP (CML-LBP) resistant to at least 1 second-generation TKI were enrolled and administered olverembatinib (30 or 40 mg) QOD in combination with CD19/CD3 bispecific antibody (bispecific T-cell engager) blinatumomab. Patients: As of June 30, 2023, 76 patients were enrolled, including 57 with CML in chronic phase (CML-CP) and 19 with advanced Ph+ leukemia (CML-AP, CML-LBP, Ph+ ALL). The median (range) age was 54.5 (21-80) years, and 56.6% of patients were male. 11 (14.5%), 23 (30.3%), and 39 (51.3%) patients had received 2, 3, and ≥4 TKIs, respectively. A total of 40 (52.6%) patients were previously treated with ponatinib, of whom 67.5% were resistant, 25.0% were intolerant to the drug, and 7.5% of patients failed for other reasons. A total of 21 (27.6%) patients were previously treated with asciminib, of whom 71.4% were resistant and 19.1% were intolerant to the agent, and 9.5% failed for other reasons. At baseline, 31.6% of patients had T315I mutations, and 38.2% had hypertension. The median (range) duration of treatment was 24.1 (0-134) weeks. PK analysis showed that patients worldwide had a PK profile similar to historical data on Chinese patients. Efficacy results: Among 50 efficacy-evaluable patients with CML-CP, 56.8% (25/44) achieved a complete cytogenetic response (CCyR), and 42.9% (21/49) achieved a major molecular response (MMR). In patients with CML-CP harboring the T315I mutation, CCyR and MMR rates were 60.0% (9/15) and 43.8% (7/16), respectively; In patients without the T315I mutation, CCyR and MMR rates were 55.2% (16/29) and 42.4% (14/33), respectively; In patients who were ponatinib-resistant, CCyR and MMR rates were 53.3% (8/15) and 37.5% (6/16), respectively; In patients who were asciminib-resistant, CCyR and MMR rates were 42.9% (3/7) and 37.5% (3/8), respectively. Among the 13 efficacy-evaluable patients with advanced Ph+ leukemia, 23.1% (3/13) achieved MMR, of whom 1 patient harbored the T315I mutation and 2 were T315I mutation negative and resistant to ponatinib. In the combination cohort, 2 patients with Ph+ BCP ALL received olverembatinib 30 mg QOD in combination with blinatumomab. Both patients achieved CCyR and 1 achieved negative minimal residual disease (MRD) status after 1 treatment cycle. Safety results: A total of 12 patients with CML-CP and 7 with advanced Ph+ leukemia discontinued treatment for reasons including adverse events (AEs n=4), disease progression (n=7), and other reasons (n=8). A total of 54 (83.1%) patients experienced treatment-related AEs (TRAEs) of any grade after receiving olverembatinib. Grade ≥3 TRAEs occurring in ≥3 patients included thrombocytopenia (17.0%), neutropenia (13.8%), elevated blood creatine phosphokinase (13.8%), leukopenia (7.7%), anemia (4.6%), and elevated lipase (4.6%). 10 (15.4%) patients experienced treatment-related serious AEs (SAEs). Conclusions: Olverembatinib monotherapy or combined with blinatumomab was efficacious and well tolerated in heavily pretreated patients with CML or Ph+ ALL and was potent in patients who were resistant or intolerant to ponatinib and/or asciminib, regardless of the T315I mutation status. Olverembatinib may provide an effective treatment option for patients with CML or Ph+ ALL who have failed on two or more TKIs. * Olverembatinib is an investigational drug that has not been approved for any indication outside the Chinese mainland About Ascentage Pharma Ascentage Pharma (6855.HK) is a globally focused biopharmaceutical 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 9 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. Ascentage Pharma has been designated for multiple Major National R&D Projects, including five Major New Drug Projects, one New Drug Incubator status, four Innovative Drug Programs, and one Major Project for the Prevention and Treatment of Infectious Diseases. Olverembatinib, the company's core drug candidate developed for the treatment of drug-resistant chronic myeloid leukemia (CML) and the company's first approved product, has been granted Priority Review Designations and Breakthrough Therapy Designations by the Center for Drug Evaluation (CDE) of China National Medical Products Administration (NMPA). To date, the drug had been included into the China 2022 National Reimbursement Drug List (NRDL). Furthermore, olverembatinib has been granted an Orphan Drug Designation (ODD) and a Fast Track Designation (FTD) by the US FDA, and an Orphan Designation by the EMA of the EU. To date, Ascentage Pharma has obtained a total of 16 ODDs, 2 FTDs, and 2 Rare Pediatric Disease (RPD) Designations from the US FDA and 1 Orphan Designation from the EMA of the EU for 4 of the company's investigational drug candidates. Leveraging its robust R&D capabilities, Ascentage Pharma has built a portfolio of global intellectual property rights and entered into global partnerships with numerous renowned biotechnology and pharmaceutical companies and research institutes such as UNITY Biotechnology, MD Anderson Cancer Center, Mayo Clinic, Dana-Farber Cancer Institute, MSD, and AstraZeneca. The company has built a talented team with global experience in the discovery and development of innovative drugs and is setting up its world-class commercial manufacturing and Sales & Marketing teams. One pivotal aim of Ascentage Pharma is to continuously strengthen its R&D capabilities and accelerate its clinical development programs, in order to fulfil its mission of addressing unmet clinical needs in China and around the world for the benefit of more patients. Forward-Looking Statements The forward-looking statements made in this article relate only to the events or information as of the date on which the statements are made in this article. Except as required by law, Ascentage Pharma undertakes no obligation to update or revise publicly any forward-looking statements, whether as a result of new information, future events, or otherwise, after the date on which the statements are made or to reflect the occurrence of unanticipated events. You should read this article completely and with the understanding that our actual future results or performance may be materially different from what we expect. In this article, statements of, or references to, our intentions or those of any of our Directors or our Company are made as of the date of this article. Any of these intentions may alter in light of future development. SOURCE Ascentage Pharma

SUZHOU, China, and ROCKVILLE, Md., Nov. 2, 2023 /PRNewswire/ -- Ascentage Pharma (6855.HK), a global biopharmaceutical company engaged in developing novel therapies for cancer, chronic hepatitis B (CHB), and age-related diseases, announced today that results from multiple clinical studies of the company's novel drug candidate, olverembatinib, have been selected for presentations, including two Oral Reports, at the 65th American Society of Hematology (ASH) Annual Meeting. Being selected for Oral Reports at the ASH Annual Meeting for the sixth consecutive year underscores the significant interest in the drug by the global hematology community. This year, results from multiple clinical studies on two of Ascentage Pharma's lead drug candidates (olverembatinib and lisaftoclax) have been selected for presentations at the ASH Annual Meeting. As a potential best-in-class drug, olverembatinib has broad therapeutic potential for the treatment of multiple solid tumors and hematologic malignancies. Currently, olverembatinib is being jointly commercialized by Ascentage Pharma and Innovent Biologics. Through an Oral Report at this year's ASH Annual Meeting, Ascentage Pharma will present the latest results from a randomized, controlled registrational Phase II study in patients with first- and second-generation tyrosine kinase inhibitor (TKI)-resistant chronic myeloid leukemia in the chronic-phase (CML-CP), led by Prof. Xiaojun Huang and Prof. Qian Jiang, from the Institute of Hematology of the Peking University People's Hospital. These data show that, in patients with CML-CP who were resistant/intolerant to TKIs, olverembatinib demonstrated statistically significant and clinically meaningful improvement in event-free survival (EFS), compared with the best available therapy (BAT), meeting the primary endpoint of the study. The other Oral Report featuring early results from a Phase II study of olverembatinib combined with venetoclax and reduced-intensity chemotherapy in treatment-naïve patients with Ph+ ALL, led by Prof. Xiaoyuan Gong of the Institute of Hematology and Blood Diseases Hospital, the Chinese Academy of Medical Sciences Also at this year's ASH Annual Meeting, Ascentage Pharma will release updated results from a US study of olverembatinib in a Poster Presentation. These data demonstrate the favorable potential clinical benefit of olverembatinib monotherapy and combination regimens in patients with heavily pretreated CML or Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph+ ALL) and show the drug's therapeutic effect in patients who had failed prior treatment with ponatinib or asciminib, further demonstrating the drug's potential as a new treatment option to patients with CML or Ph+ ALL worldwide. In addition, multiple studies of olverembatinib were also selected for Poster Presentations, including one featuring a case series study of liposome mitoxantrone combined with venetoclax, homoharringtonine, and olverembatinib (the MVHO regimen) in pediatric patients with refractory or recurrent acute myeloid leukemia (AML), carried out by a team of investigators including Wenting Hu and Prof. Shuhong Shen of the Department of Hematology & Oncology, Shanghai Children's Medical Center of Shanghai Jiao Tong University School of Medicine (see the table below for details). The ASH Annual Meeting is one of the largest gatherings of the international hematology community, bringing together the latest and most cutting-edge scientific research in the pathogenesis and clinical treatment of hematologic diseases. The 65th ASH Annual Meeting will take place on December 9-12, 2023, local time, both online and in-person in San Diego, CA (United States). "This is the sixth consecutive year for the updated clinical data of olverembatinib to be accepted for presentation at the ASH Annual Meeting, a new record for the drug," said Dr. Yifan Zhai, Chief Medical Officer of Ascentage Pharma. "This year, results from multiple studies of olverembatinib have been selected for presentations, including two Oral Reports, at the meeting. This indicates the global hematology community's strong recognition of olverembatinib, a global best-in-class drug. The large body of clinical data we are bringing to this year's ASH Annual Meeting underscores our broad progress in new drug discovery and clinical development. Moving forward, we will continue to expeditiously advance our clinical development programs globally for the benefit of patients in China and around the world." Studies of Ascentage Pharma's Drug Candidates to be presented at ASH 2023 Abtracts on olverembatinib presented at the 2023 ASH Annual Meeting are as follows (for details on the abstracts featuring lisaftoclax, please refer to a separate press release published at the same time): Olverembatinib (HQP1351) Demonstrates Efficacy Vs. Best Available Therapy (BAT) in Patients (Pts) with Tyrosine Kinase Inhibitor (TKI)-Resistant Chronic Myeloid Leukemia Chronic-Phase (CML-CP) in a Registrational Randomized Phase 2 Study Format: Oral Report Abstract: #869 Session: 632. Chronic Myeloid Leukemia: Clinical and Epidemiological: Novel Therapeutic Approaches Time: December 11, 2023, Monday, 3:45 PM (Pacific Time) / December 12, 2023, Tuesday, 7:45 AM (Beijing Time) Highlights: This is a multicenter, randomized, registrational Phase II study designed to assess the efficacy and safety of olverembatinib compared with the BAT in patients with CML-CP. As of April 30, 2023, a total of 144 patients were enrolled, of whom 69.4% were male and 30.6% were female. The median (range) age of these patients was 49.0 (18-77) years. A total of 96 patients were treated with olverembatinib, and 48 patients were treated with BAT. The median (range) duration of follow-up for the olverembatinib and BAT arms were 12.67 (0.0-40.9) months and 2.94 (0.0-40.4) months, respectively. 66 (45.8%) patients had ≥1 BCR::ABL1 mutations, and 39 (27.1%) had the "gatekeeper" BCR::ABL1T315I mutation, which confers resistance against all first- and second-generation tyrosine kinase inhibitors (TKIs). A total of 97 patients discontinued therapies (56 [58.3%] from the olverembatinib arm, 41 [85.4%] from the BAT arm) due to disease progression, treatment failure, adverse events (AEs), consent withdrawal, poor compliance, or death. Safety results: 82/96 (85.4%) patients receiving olverembatinib and 31/46 (67.4%) patients receiving BAT experienced grade≥3 AEs. AEs with an incidence >20% included thrombocytopenia; leukopenia; anemia; neutropenia; elevated creatine phosphokinase (CPK), alanine aminotransferase (ALT), and aspartate aminotransferase (AST); and hypertriglyceridemia. Serious AEs (SAEs) with an incidence >5% included thrombocytopenia. Common AEs (≥10%) that led to discontinuation, dose reduction, or treatment withdrawal were thrombocytopenia, neutropenia, and leukopenia. Efficacy results: Data showed that, in patients with CML-CP resistant/intolerant to prior treatment with TKIs, the olverembatinib arm, compared with the BAT arm, achieved statistically significant improvement in event-free survival (EFS), therefore meeting the primary endpoint of the study. The median (range) EFS was 21.22 (95% CI: 10.15 to not reached) months in the olverembatinib arm compared to 2.86 (95% CI 2.53-4.73) months in the BAT arm. Compared with the BAT control arm, olverembatinib reduced the risk of events by 65%. In the olverembatinib arm, the estimated EFS at 6, 12, and 24 months was 73% (95% CI, 62.5-81.0), 58.7% (95% CI, 47.5-68.2), and 46.9% (95% CI, 35.9-57.2), respectively. In the BAT group, it was 32.6% (95% CI,19.7-46.2), 26.1% (95% CI, 14.5-39.3), and 16.9% (95% CI, 7.7-29.2) at 6, 12 and 24 months, respectively. Neither the olverembatinib nor the BAT arm reached the median overall survival (OS). As of the data cutoff date, 34 (71%) patients in the BAT control arm were crossed-over to be treated with olverembatinib after reaching the EFS endpoint. The olverembatinib arm showed significantly better efficacy and higher response rates than the BAT control arm. Conclusions: Olverembatinib was observed to be better tolerated and more effective than BAT in patients with CML-CP resistant or intolerant to first- and second-generation TKIs. Update of Olverembatinib (HQP1351) Overcoming Ponatinib and/or Asciminib Resistance in Patients (Pts) with Heavily Pretreated/Refractory Chronic Myeloid Leukemia (CML) and Philadelphia Chromosome-Positive Acute Lymphoblastic Leukemia (Ph+ ALL) Format: Poster Presentation Abstract: #1798 Session: 632. Chronic Myeloid Leukemia: Clinical and Epidemiological: Poster I Time: December 9, 2023, Saturday, 5:30 PM - 7:30 PM (Pacific Time) / December 10, 2023, Sunday, 9:30 AM – 11:30 AM (Beijing Time) Highlights Olverembatinib, a novel, potent BCR::ABL1 tyrosine kinase inhibitor (TKI), has shown strong antitumor activity in patients with CML and Ph+ ALL. This abstract reports on the safety, efficacy, and pharmacokinetics (PK) of olverembatinib in patients with CML and Ph+ ALL outside China, particularly in patients previously treated with third-generation TKI ponatinib and/or allosteric STAMP inhibitor asciminib. Methods: Olverembatinib was administered orally once every other day (QOD) in 28-day cycles. In the monotherapy cohort, patients were enrolled after treatment failures on at least 2 prior TKIs and randomized to receive olverembatinib QOD at 30, 40, or 50 mg. In the combination cohort, patients with Ph+ B-cell precursor ALL (BCP ALL) or lymphoid CML-BP (CML-LBP) resistant to at least 1 TKI were enrolled and administered olverembatinib (30 or 40 mg) QOD in combination with blinatumomab. As of June 30, 2023, 76 patients were enrolled, including 57 with CML-CP and 19 with advanced Ph+ leukemia. The median (range) age was 54.5 (21-80) years and 56.6% of patients were male.11 (14.5%), 23 (30.3%) and 39 (51.3%) patients had received 2, 3, and ≥4 TKIs, respectively. A total of 52.6% of patients were previously treated with ponatinib, of whom 67.5% were resistant and 25.0% were intolerant to the drug, and 7.5% of patients failed for other reasons. A total of 27.6% of patients were previously treated with asciminib, of whom 71.4% were resistant and 19.1% were intolerant to the agent, and 9.5% failed for other reasons. At baseline, 32% of patients had T315I mutations, 38% had hypertension, and 17.1% had other cardiovascular comorbidities. The median (range) duration of treatment was 24.1 (0-134) weeks. PK analysis showed that western patients had a PK profile similar to historical data on Chinese patients. Safety results: 12 patients with CML-CP and 7 with advanced Ph+ leukemia discontinued treatment for reasons including AEs (n=4), disease progression (n=7), and other reasons (n=8). A total of 54 (83.1%) patients experienced treatment-related AEs (TRAEs) of any grade after receiving olverembatinib. Grade ≥3 AEs occurring in ≥3 patients (≥ 4.6% incidence) included thrombocytopenia (17%), neutropenia (13.8%), elevated blood creatine phosphokinase (13.8%), leukopenia (7.7%), anemia (4.6%), and elevated lipase (4.6%). 10 (15.4%) patients experienced olverembatinib treatment-related serious AEs (SAEs). 2 (3.1%) patients discontinued the study due to TRAEs, and no TRAE-related deaths were reported. Efficacy results: Among 50 efficacy-evaluable patients with CML-CP, 57% (25/44) achieved a complete cytogenetic response (CCyR), 43% (21/49) achieved a major molecular response (MMR), and efficacy continued to improve over time. The rate of MMR in patients with CML-CP treated for 6 months and 12 months was 66% and 88%, respectively. At 24 months, the rate of progression-free survival (PFS) was 75% (95% CI: 56.1-86.7) and the OS was 97.6% (95% CI: 90.8-99.4). Among patients whose disease failed ≥4 prior TKIs, CCyR and MMR rates were 57% (13/23) and 42% (11/26), respectively; In patients with CML-CP harboring the T315I mutation, CCyR and MMR rates were 60% (9/15) and 44% (7/16), respectively; In patients without the T315I mutation, CCyR and MMR rates were 55% (16/29) and 42% (14/33), respectively; In patients who had failed treatment with ponatinib, CCyR and MMR rates were 53% (8/15) and 38% (6/16), respectively; In patients who had failed treatment with asciminib, CCyR and MMR rates were 43% (3/7) and 38% (3/8), respectively. Among the 8 patients who were resistant/intolerant to both ponatinib and asciminib, 2 achieved MMR. Among the 13 efficacy-evaluable patients with advanced Ph+ leukemia, 3 (23%) achieved MMR, of whom 1 patient harbored the T315I mutation and 2 were T315I mutation negative and resistant to ponatinib. In the combination cohort, 2 patients with Ph+ BCP ALL received olverembatinib 30 mg QOD in combination with blinatumomab. Both patients achieved CCyR and 1 achieved negative minimal residual disease (MRD) status after 1 treatment cycle. Conclusions: Olverembatinib alone or combined with blinatumomab was efficacious and well tolerated in heavily pretreated patients with CML or Ph+ ALL. The efficacy of olverembatinib was not affected by prior exposure to ponatinib or asciminib, and the status of the T315I mutation. Olverembatinib may provide an effective treatment option for patients with CML or Ph+ ALL who have failed 2 or more TKIs. Olverembatinib Combined with Venetoclax and Reduced-Intensity Chemotherapy for Patients with Newly Diagnosed Philadelphia Chromosome-Positive Acute Lymphoblastic Leukemia: Early results from a phase II study Format: Oral Report Abstract: #827 Session: 614. Acute Lymphoblastic Leukemia: Therapies, Excluding Transplantation and Cellular Immunotherapies: Optimal Frontline Treatment for ALL Time: December 11, 2023, Monday; 3:45 PM (Pacific Time) / December 12, 2023, Tuesday; 7:45 AM (Beijing Time) Highlights : Background: The combination of olverembatinib (HQP1351), a novel third-generation tyrosine kinase inhibitors (TKIs), with venetoclax generated high response rates in patients with relapsed/refractory Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph ALL). However, the efficacy and safety of these two agents-based regimens as frontline treatment remains unknown. Methods: This is a single-arm phase II study (NCT05594784) that enrolled patients (pts) ≥ 14 years (yrs) of age with newly diagnosed Ph+ ALL. Pts were treated with a combination of venetoclax (100 mg d1, 200 mg d2, 400 mg d3-28), olverembatinib 40 mg once every continuously other day, vincristine 1.4 mg/m2 (maximum dose 2 mg) on day 1, 8, 15, 22, and prednisone 60 mg/m2 on day 1-14; 40 mg/m2 on day 15-28 in cycle 1. In cycle 2-3, oral treatment with venetoclax 400 mg × 7 days, olverembatinib once every other day continuously and prednisone 60 mg/m × 7 days were administrated. Cycles were repeated every 28 days. During cycle 1, The dose of olverembatinib was reduced to 30 mg once every other day for pts achieving a complete molecular response (CMR). The primary endpoint of this study was the CMR rate at 3 months. CMR was defined as undetectable BCR:ABL1 transcripts by using the RT-PCR method with sensitivity of 0.001%. MMR was defined as more than 3-log reduction of BCR:ABL1 transcripts. From August 2022 to April 2023, a total of 31 pts were enrolled. All pts completed 3 cycles of treatment and could be assessed for the primary endpoint. The data cutoff date was July 25, 2023 with a median follow-up time of 5.8 months. The median age was 40 years (range, 20-66 years) and males accounted for 58.1%. Twenty-three pts (74.2%) expressed the p190 transcript and 8 pts (25.8%) expressed the p210 transcript. The median expression level of BCR:ABL1 was 96.33% (range, 70.79%-175.39%). Efficacy results: All patients achieved CR at the end of cycle 1 and no TLS or treatment-related deaths occurred. Molecular response at the end of cycle 1 was CMR in 17 patients (54.8%), and MMR in 8 (25.8%). Molecular response at 3 months was CMR in 19 patients (61.3%) and MMR in 10 (32.3%). No patients developed relapses or deaths at the last follow-up. Safety results: The regimen was well-tolerated and safe. Most side effects were grade 1-2. The demand for transfusion and the incidence of infections significantly decreased compared to our historic data. No patient discontinued olverembatinib or venetoclax due to toxicity. Conclusions: The combination of olverembatinib and venetoclax with reduced-intensity chemotherapy is a safe and effective regimen in patients with newly diagnosed Ph ALL. The regimen results in high rates of CMR in the absence of intensive chemotherapy or immunotherapy. Combination of Liposome Mitoxantrone, Venetoclax, Homoharringtonine, and Olverembatinib (HQP1351) (MVHO) in Pediatric Patients with Refractory or Recurrent Acute Myeloid Leukemia (AML): Case Series Format: Poster Presentation Abstract: #2840 Session: 613. Acute Myeloid Leukemias: Clinical and Epidemiological: Poster II Time: December 10, 2023, Sunday, 6:00 PM - 8:00 PM (Pacific Time) / December 11, 2023, Monday, 10:00 AM – 12:00 PM (Beijing Time) Highlights: Background: AML accounts for up to 25% of all pediatric acute leukemia cases. Although the OS in pediatric AML has increased to approximately 70% in recent years because of enhanced risk stratification and therapeutics, approximately 30% of patients experience relapse, and 5% to 10% die because of disease complications or untoward medication effects. Hence, pediatric AML continues to represent an unmet medical need. This study investigated the safety and efficacy of the MVHO therapy in pediatric patients with refractory or relapsed AML. Methods: The study enrolled patients with recurrent or newly diagnosed AML with poor prognosis secondary to related molecular abnormalities, including NUP98 rearrangements, FUS-ERG, CBFA2T3-GLIS2, and del(7/7q), who did not achieve complete remission (CR) after first-line induction therapy (i.e., DA, DAE, DAH, MAG, and CLAG). Patients were administered the MVHO regimen, which included 1 dose of liposome mitoxantrone at 8 mg/m2; venetoclax at 300 to 350 mg/m2 once daily on days (D) 1 through 7 (with dose escalation if high tumor burden); homoharringtonine at 2 mg/m2 once daily on D1 through 7; and olverembatinib at 20-30 mg/m2 every other day on D1, 3, 5, and 7. The remission rate after 1 cycle (28-35 days, depending on hematopoietic recovery), overall response rate, recurrence rate, EFS, hematologic toxicity, and infection rate of the MVHO protocol were evaluated. A total of 18 patients were enrolled (9 boys and 9 girls), with a median (range) age of 7.3 (4 months-13 years) years, and underwent a total of 27 cycles of the MVHO therapy. Half of the patients underwent 1 cycle and the other half underwent 2 cycles. Per French-American-British (FAB) classification criteria, patients had myelodysplastic syndrome (n = 2); mixed-phenotype acute leukemia (n = 2); and AML subtypes M7 (n = 4), M2 (n = 4), M5 (n = 4), M4 (n = 1), and M0 (n = 1). Efficacy results: The median (range) follow-up time was 131 (26-256) days. The objective response rate (CR + complete remission with incomplete hematological recovery [Cri] + partial response) was 83.3%, and the remission rate (CR + Cri) after 1 cycle was 72.2%. A total of 8 patients were minimum residual disease negative. For the 6 patients with relapsed AML, the remission rate after 1 cycle was 66.7%. A total of 3 patients discontinued because of no response or disease progression, and 12 patients underwent hematopoietic stem cell transplantation, after which 1 patient relapsed. The rate of recurrence was 6.7% (1/15). The 8-month mean (± SD) EFS was 60.1% (± 19%) and the OS was 100%. Safety results: Among the 26 cycles of treatment evaluated for toxicity, there were no associated fatal infections or bleeding events. Prophylactic levofloxacin and posaconazole were administered orally (or intravenously administered anti-infection treatment in the case of infection) during myelosuppression in each cycle. No breakthrough infection was observed in 5 of 26 cycles of MVHO. There was 1 case of septic shock, and the incidence of grade ≥ 3 infection was 80.7%, which included pneumonia and bloodstream infections. Common grade 4 TRAEs were neutropenia, which was experienced by 100% of patients, and grade 4 thrombocytopenia, which was experienced by 46.1% of patients. Platelets did not decrease to below 100,000/μL after 5 of 26 cycles of MVHO treatment. Conclusions: MVHO therapy was effective and reasonably well tolerated in pediatric patients with refractory or recurrent AML, suggesting that it may comprise a suitable first-line treatment option for pediatric patients with AML. * Olverembatinib is an investigational drug that has not been approved for any indication outside the Chinese mainland About Ascentage Pharma Ascentage Pharma (6855.HK) is a globally focused biopharmaceutical 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 9 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. Ascentage Pharma has been designated for multiple Major National R&D Projects, including five Major New Drug Projects, one New Drug Incubator status, four Innovative Drug Programs, and one Major Project for the Prevention and Treatment of Infectious Diseases. Olverembatinib, the company's core drug candidate developed for the treatment of drug-resistant chronic myeloid leukemia (CML) and the company's first approved product, has been granted Priority Review Designations and Breakthrough Therapy Designations by the Center for Drug Evaluation (CDE) of China National Medical Products Administration (NMPA). To date, the drug had been included into the China 2022 National Reimbursement Drug List (NRDL). Furthermore, olverembatinib has been granted an Orphan Drug Designation (ODD) and a Fast Track Designation (FTD) by the US FDA, and an Orphan Designation by the EMA of the EU. To date, Ascentage Pharma has obtained a total of 16 ODDs, 2 FTDs, and 2 Rare Pediatric Disease (RPD) Designations from the US FDA and 1 Orphan Designation from the EMA of the EU for 4 of the company's investigational drug candidates. Leveraging its robust R&D capabilities, Ascentage Pharma has built a portfolio of global intellectual property rights and entered into global partnerships with numerous renowned biotechnology and pharmaceutical companies and research institutes such as UNITY Biotechnology, MD Anderson Cancer Center, Mayo Clinic, Dana-Farber Cancer Institute, MSD, and AstraZeneca. The company has built a talented team with global experience in the discovery and development of innovative drugs and is setting up its world-class commercial manufacturing and Sales & Marketing teams. One pivotal aim of Ascentage Pharma is to continuously strengthen its R&D capabilities and accelerate its clinical development programs, in order to fulfil its mission of addressing unmet clinical needs in China and around the world for the benefit of more patients. 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