2024年12月24日,复宏汉霖(2696.HK)宣布,HLX78(lasofoxifene,拉索昔芬片)联合阿贝西利(CDK4/6 抑制剂)用于治疗既往接受过芳香化酶抑制剂(AI)治疗、雌激素受体α基因(ESR1)突变的雌激素受体阳性(ER+)、人表皮生长因子受体2阴性(HER2-)局部晚期或转移性乳腺癌患者的国际多中心III期临床研究(ELAINE-3研究,NCT05696626)完成中国首例患者给药。目前,该研究正同步于美国、加拿大、欧盟等国家和地区招募受试者。 乳腺癌是全球发病率第二高的癌症,据GLOBOCAN数据显示,2022年全球乳腺癌新发病例约230万,中国乳腺癌新发病例逾35.7万[1]。雌激素受体(Estrogen receptor,ER)阳性乳腺癌占乳腺癌总数的60%-70%[2]。内分泌治疗是ER+乳腺癌的主要治疗手段,其中最常使用的芳香化酶抑制剂(aromatase inhibitor,AI)已被美国国立综合癌症网络(NCCN)和中国临床肿瘤学会(CSCO)等指南推荐成为ER+/HER2-乳腺癌患者的辅助及一线标准治疗方法[3,4],然而几乎所有经AI治疗的患者会产生原发性或获得性耐药[5],其中ESR1获得性突变最为常见,高达40%,被认为是内分泌治疗重要耐药机制[6],目前针对ESR1突变的ER+/HER2-乳腺癌治疗方案有限,存在较大治疗需求。 HLX78是公司自Sermonix Pharmaceuticals, Inc. 许可引进的一款临床在研口服选择性雌激素受体调节剂 (selective estrogen receptor modulator,SERM) ,在ESR1突变的ER+/HER2-转移性乳腺癌的治疗中具有强大的靶向治疗作用。在已完成的两项II期临床研究(ELAINE-1和ELAINE-2研究)中,针对ESR1突变肿瘤,lasofoxifene作为单药或联合CDK4/6抑制剂使用均展现出抗肿瘤活性[7-8]。从lasofoxifene对雌激素受体突变的生物利用度和药物活性来看,该候选药物有望为内分泌治疗后产生获得性耐药ESR1突变的患者群体带来希望,并有望在晚期ER+乳腺癌的精准医学治疗中发挥关键作用。 未来,公司也将继续以患者为中心,聚焦未满足的临床需求,垂直深耕乳腺癌领域领域,加快推进该项国际多中心临床试验进展,并以不断的创新与突破为更多病患带来更多质高价优的治疗方案。 关于ELAINE-3研究 关于复宏汉霖 First Chinese Patient Dosed for Phase 3 MRCT on ER+/HER2- Breast Cancer of HLX78 Shanghai, China, December 24, 2024 - Shanghai Henlius Biotech, Inc. (2696.HK) announced that the first patient in China has been dosed in the international multi-centre Phase 3 clinical trial (ELAINE-3, NCT05696626) of HLX78 (oral lasofoxifene) in combination with abemaciclib (a CDK4/6 inhibitor) in patients with locally advanced or metastatic estrogen receptor-positive (ER+)/Human epidermal growth factor receptor 2-negative (HER2-) breast cancer who have disease progression on an aromatase inhibitor (AI) in combination with CDK4/6 inhibitor and have an estrogen receptor α gene (ESR1) mutation. ELAINE-3 is currently recruiting subjects in the United States, Canada, the European Union, in addition to other countries and regions. Breast cancer is the second most diagnosed cancer in the world, according to GLOBOCAN 2022. There were around 2.3 million new cases of breast cancer in 2022 globally, including more than 357,000 in China.[1] ER+ breast cancer comprises 60-70% of all breast cancers.[2] Endocrine therapy remains the mainstay treatment for ER+ breast cancer and the most widely used class of aromatase inhibitor (AI) has been recommended by the National Comprehensive Cancer Network (NCCN) and Chinese Society of Clinical Oncology (CSCO) guidelines to be the adjuvant and first-line standard of care for patients with ER+/HER2- breast cancer.[3,4] However, almost all patients treated with AIs in the advanced setting develop resistance[5], with ESR1 mutations being one of the most prevalent alterations, present in up to 40% of patients and a significant mechanism of resistance to endocrine therapy[6]. Currently, there are limited treatment options for ER+/HER2- breast cancer with ESR1 mutations, and thus a large clinical need exists. HLX78 (lasofoxifene) is an oral selective estrogen receptor modulator (SERM) licensed by Henlius for Asia from Sermonix Pharmaceuticals, Inc. It has demonstrated robust target engagement in ER+/HER2- metastatic breast cancer, particularly in the presence of ESR1 mutations. In two completed Phase 2 clinal studies (ELAINE-1 and ELAINE-2), lasofoxifene has demonstrated anti-tumour activity against tumours with ESR1 mutations as monotherapy and in combination with a CDK4/6 inhibitor.[7,8] Lasofoxifene’s bioavailability and activity in mutations of the estrogen receptor could potentially hold promise for patients who have acquired endocrine resistance due to ESR1 mutations, and, if approved, play a critical role in the precision medicine treatment of advanced ER+ breast cancer. In the future, Henlius will continue to adopt a patient-centric approach, focusing on unmet clinical needs. The company will delve deeply into the breast cancer field and expedite the development of the international multi-center clinical trial ELAINE-3, aiming to bring more high-quality, affordable, and innovative treatments to patients worldwide. About ELAINE-3 About Henlius 联系方式 媒体:PR@Henlius.com 投资者:IR@Henlius.com 喜欢本文内容 点击下方按钮·分享 ·收藏 ·点赞 ·在看







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