Henlius Anti-PD-1 mAb Serplulimab Combined with Chemotherapy and Concurrent Radiotherapy MRCT Phase 3 Study on First-Line LS-SCLC Patients Received Clinical Trial Approved in Australia-Media

Henlius Anti-PD-1 mAb Serplulimab Combined with Chemotherapy and Concurrent Radiotherapy MRCT Phase 3 Study on First-Line LS-SCLC Patients Received Clinical Trial Approved in Australia

2022-10-25

Shanghai, China, Oct 25th, 2022 - Shanghai Henlius Biotech, Inc. (2696.HK) announced that the international multi-centre phase 3 study of HANSIZHUANG (serplulimab), an innovative anti-PD-1 monoclonal antibody (mAb) independently developed by the company, in combination with chemotherapy and concurrent radiotherapy for the treatment of limited-stage small cell lung cancer (LS-SCLC) has been approved by the relevant Human Research Ethics Committee (HREC), and Clinical Trial Notification (CTN) has been acknowledged by the Therapeutic Goods Administration (TGA), Australia. Previously, the first patient was dosed in China, and more clinical approvals are being sought in many other countries and regions.

According to GLOBOCAN 2020, lung cancer (LC) is the second commonly diagnosed and the first mortality cancer around the world. There were 2.2 million new LC cases and 1.8 million new deaths in 2020 worldwide, and LC is still the leading cause of cancer deaths^[1]. SCLC accounts for 15%–20% of the total number of LC. SCLC is featured by high malignancy, strong invasiveness, early metastasis, and rapid disease progression, with extremely poor prognosis. LC is divided into two stages, including limited stage and extensive stage, and 30%–40% patients are in limited stage at the time of diagnosis. The standard treatment regimens for LS-SCLC is surgery, chemotherapy and concurrent radiotherapy. Traditional chemotherapeutic drugs did not exhibit significant progress in patients with LS-SCLC, and most patients tend to develop drug resistance or rapid relapse^[2–4]. The advent of immune checkpoint inhibitors has been proved to bring hope to patients with ES-SCLC, but has not yet to show benefit in those with LS-SCLC. The company is continuing to explore immuno-oncology therapy for LS-SCLC, with the goal of delivering more effective treatment for patients.

HANSIZHUANG is the first innovative mAb developed by Henlius. It has been approved by the NMPA for the treatment of MSI-H solid tumours. With HANSIZHUANG as the backbone, Henlius conducts and accelerates various clinical trials with immuno-oncology combination therapies worldwide and covers the full range of first-line treatments of LC. In addition to LS-SCLC, two global multi-centre phase 3 clinical trials regarding squamous non-small cell lung cancer (sqNSCLC) and ES-SCLC have been conducted in China, Turkey, Poland, Georgia, and other countries and regions, with over 30% of the total enrolled subjects being White, providing more diverse cases for clinical research. The NDAs have been accpted by the National Medical Products Administration (NMPA) based on the studies results of sqNSCLC and ES-SCLC. What’s more, ASTRUM-005, the international multi-centre study in patients with ES-SCLC, has been published in The Journal of the American Medical Association (JAMA, impact factor of 157.3), one of the top four medical journals in the world, demonstrating the high level of academic acclaim on a global scale. HANSIZHUANG is expected to become the world's first anti-PD-1 mAb for the first-line treatment of SCLC and to fill the clinical gap in the next five years.

In the future, the company will continue emphasizing unmet clinical needs and actively promote the combination immunotherapy of serplulimab and international regulatory registration to benefit more patients around the world.

About HANSIZHUANG

HANSIZHUANG (recombinant humanised anti-PD-1 monoclonal antibody injection, generic name: serplulimab injection) is the first innovative monoclonal antibody developed by Henlius. Up to date, 1 indication is approved for marketing in China, 3 NDAs have been accepted by the NMPA, and 11 clinical trials are ongoing across the world.

HANSIZHUANG was approved by the NMPA for the treatment of MSI-H solid tumours in March 2022 and its synergy with in-house products of the company and innovative therapies are being actively promoted. It has successively obtained clinical trial licenses in China, the United States, the European Union and other countries and regions to initiate 11 clinical trials on immuno-oncology combination therapies in a wide variety of indications, such as lung cancer, esophageal carcinoma, head and neck squamous cell carcinoma and gastric cancer, etc., and covering the full range of first-line treatments of lung cancers. As of now, the company has enrolled more than 3,100 subjects in China, Turkey, Poland, Georgia and other countries and regions, and the proportion of White is over 30% in two MRCTs, making HANSIZHUANG an anti-PD-1 mAb with one of the largest global clinical data pools. The NDAs of the first-line treatment for squamous non-small cell lung cancer (sqNSCLC), extensive-stage small cell lung cancer (ES-SCLC), and esophageal squamous cell carcinoma (ESCC) have been accepted by the NMPA, which makes HANSIZHUANG potentially the world’s first anti-PD-1 mAb for the first-line treatment of SCLC. Furthermore, HANSIZHUANG was recommended by the 2022 CSCO Guidelines for Diagnosis and Treatment of Small Cell Lung Cancer (SCLC) for the treatment of ES-SCLC, and the related clinical trial has also become the first study published in JAMA on SCLC immunotherapy. Serplulimab was also granted orphan drug designation by the FDA for treatment of SCLC.

Reference

[1] Sung H, Ferlay J, Siegel RL, Laversanne M, Soerjomataram I, Jemal A, Bray F. Global Cancer Statistics 2020: GLOBOCAN Estimates of Incidence and Mortality Worldwide for 36 Cancers in 185 Countries. CA Cancer J Clin. 2021 May;71(3):209-249.

[2] Faivre-Finn C, Snee M, Ashcroft L, Appel W, Barlesi F, Bhatnagar A, Bezjak A, Cardenal F, Fournel P, Harden S, Le Pechoux C, McMenemin R, Mohammed N, O'Brien M, Pantarotto J, Surmont V, Van Meerbeeck JP, Woll PJ, Lorigan P, Blackhall F; CONVERT Study Team. Concurrent once-daily versus twice-daily chemoradiotherapy in patients with limited-stage small-cell lung cancer (CONVERT): an open-label, phase 3, randomised, superiority trial. Lancet Oncol. 2017 Aug;18(8):1116-1125.

[3] Wang Z, Wan J, Liu C, Li L, Dong X, Geng H. Sequential Versus Concurrent Thoracic Radiotherapy in Combination With Cisplatin and Etoposide for N3 Limited-Stage Small-Cell Lung Cancer. Cancer Control. 2020 Jan-Dec;27(1):1073274820956619.

[4] Ha IB, Jeong BK, Jeong H, Choi HS, Chai GY, Kang MH, Kim HG, Lee GW, Na JB, Kang KM. Effect of early chemoradiotherapy in patients with limited stage small cell lung cancer. Radiat Oncol J. 2013 Dec;31(4):185-90.