HONG KONG, CALIFORNIA, Sep.8 -- Akeso (9926. HK) announced that its internally developed PD-1/VEGF bispecific antibody ivonescimab showed clinically significant results from a Phase II study, either as a monotherapy or in combination with chemotherapy, for the perioperative treatment of resectable non-small cell lung cancer (NSCLC) at the 25th World Conference on Lung Cancer (WCLC). This marks ivonescimab’s third oral presentation at an international conference in 2024. Professor Zhao Xiaoliang from Tianjin Medical University Cancer Hospital delivered an oral presentation at WCLC, sharing China’s advancements in innovative cancer immunotherapies with global experts.

As of February 2024, the AK112-205 study enrolled 60 patients, with 78.3% in stage III and 90% in N+ stage (Among N+ stage patients, 70% are in N2 stage). Of these, 49 underwent surgery (all R0 resections). The study results demonstrated that perioperative ivonescimab monotherapy or combined with chemotherapy for resectable NSCLC demonstrated high rates of pathological complete response (pCR) and major pathological response (MPR) in this phase II study.  

Compared with ivonescimab monotherapy, rates of MPR and pCR in ivonescimab combined with chemotherapy were numerically higher, and across tumor stage and PD-L1 expression subgroups.  

• Ivonescimab + chemotherapycohort: pCR rate was 43.6%, MPR rate was 71.8%. 2% of patients are with residual viable tumor (RVT) ＜ 5%.

-As of Aug, 2024, 55 patients in this cohort completed surgery, pCR and MPR rates were improved to 52.7% and 72.7%, respectively.For squamous NSCLC, pCR and MPR rates were 63.6% and 84.1%, respectively.

• Ivonescimab monotherapycohort: pCR rate was 30.0%, MPR rate was 60.0%.

Event-Free Survival (EFS) is not mature yet. Related studies have point to a strong correlation between pCR and EFS.

The safety profile was manageable. There were no TRAEs that led to cancelled or delayed surgery or wound healing complications.

About Ivonescimab

Ivonescimab is a novel global first-in-class PD-1/VEGF bi-specific immunotherapy drug internally developed by Akeso. Ivonescimab has been approved in China for treating EGFR mutated locally advanced or metastatic non-squamous NSCLC patients who have progressed after EGFR TKI treatment. It is the world's first approved bispecific antibody with a "cancer immunotherapy + anti-angiogenesis" synergistic mechanism.Akeso out-licensed Summit Therapeutics exclusive rights to ivonescimab for the development and commercialization in certain territories including United States, Canada, Europe, Japan, Latin America, Africa and the Middle East. Ivonescimab is known as AK112 within Akeso and SMT112 in the territories licensed to Summit.Currently, a Phase III study of ivonescimab monotherapy versus pembrolizumab monotherapy as first-line treatment for PD-L1+ NSCLC has met its primary endpoint of progression-free survival (PFS) in an interim analysis, achieving a decisive positive outcome. Based on this study, a supplemental New Drug Application (sNDA) for ivonescimab monotherapy as first-line treatment for PD-L1+ NSCLC has been submitted and granted priority review. Additionally, a Phase III clinical study of ivonescimab combined with chemotherapy versus tislelizumab combined with chemotherapy as first-line treatment for squamous NSCLC is ongoing. The HARMONi study, an international multicenter Phase III clinical study led by Akeso’s partner Summit, is investigating ivonescimab combined with chemotherapy for EGFR-mutated, locally advanced or metastatic nsq-NSCLC that has progressed after third-generation EGFR-TKI therapy. Another international multicenter Phase III study is comparing ivonescimab combined with chemotherapy to pembrolizumab combined with chemotherapy as first-line treatment for squamous NSCLC.Furthermore, 3 new Phase III clinical studies are either initiated or about to start, including ivonescimab combined with AK117 (CD47) as first-line treatment for PD-L1 positive squamous cell carcinoma of the head and neck (vs. pembrolizumab), ivonescimab combined regimen as first-line treatment for cholangiocarcinoma (vs. durvalumab combined regimen), and ivonescimab combined regimen as first-line treatment for pancreatic cancer. Overall, ivonescimab is engaged in over 25 clinical trials across 17 indications, including lung cancer, pancreatic cancer, breast cancer, hepatocellular carcinoma, and colorectal cancer, through both monotherapy and combination therapy approaches.

About Akeso

Akeso (HKEX: 9926.HK) is a leading biopharmaceutical company committed to the research, development, manufacturing and commercialization of the world's first or best-in-class innovative biological medicines. Founded in 2012, the company has created a unique integrated R&D innovation system with the comprehensive end-to-end drug development platform (ACE Platform) and bi-specific antibody drug development technology (Tetrabody) as the core, a GMP-compliant manufacturing system and a commercialization system with an advanced operation mode, and has gradually developed into a globally competitive biopharmaceutical company focused on innovative solutions.With fully integrated multi-functional platform, Akeso is internally working on a robust pipeline of over 50 innovative assets in the fields of cancer, autoimmune disease, inflammation, metabolic disease and other major diseases. Among them , 22 candidates have entered clinical trials (including 11 bispecific/multispecific antibodies and bispecific antibody-drug conjugates). Additionally, 4 new drugs are commercially available, and 5 new drugs across 7 indications are currently under regulatory review for approval.Through efficient and breakthrough R&D innovation, Akeso always integrates superior global resources, develops the first-in-class and best-in-class new drugs, provides affordable therapeutic antibodies for patients worldwide, and continuously creates more commercial and social values to become a global leading biopharmaceutical enterprise.

Source: Akeso