美纳里尼与英矽智能达成合作，5亿美元获靶向KAT6的临床前候选药物全球独家授权

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– 双方合作总额逾5亿美元，包括首付款、里程碑付款以及销售分成等，美纳里尼将获得英矽智能新型KAT6抑制剂全球独家开发和商业化权益；

– 本次达成合作的新型KAT6抑制剂，有望被用于ER+/HER2-乳腺癌和其他癌症的治疗，这是乳腺癌中最常见的亚型，约占总患者群体的70%；

– 临床前试验中，候选药物ISM5043显示出卓越疗效和初步安全性，英矽智能已在2023年圣安东尼奥乳腺癌研讨会上展示了该项目的最新数据。

1月5日，国际领先的制药和诊断公司美纳里尼集团（”美纳里尼”）与其全资子公司 Stemline Therapeutics，和临床阶段的人工智能（AI）驱动的生物科技公司英矽智能达成一项授权许可协议。美纳里尼将获得ISM5043的全球独家开发和商业化权益，这是由英矽智能人工智能平台辅助设计和开发的一种靶向KAT6的新型小分子抑制剂，有望被用于ER+/HER2-乳腺癌和其他癌症的治疗。

据世界卫生组织国际癌症研究机构（IARC）发布的数据显示，乳腺癌是目前每年确诊患者数量最多的恶性肿瘤之一，也是女性发病率最高的癌症，其中ER+/HER2-亚型约占总体乳腺癌患者群体的70%。内分泌治疗与CDK4/6抑制剂的联合用药是当前ER+/HER2-亚型乳腺癌的临床标准治疗方案。然而，因接受内分泌治疗而产生的获得性突变和治疗耐药性，给控制疾病进展带来了重大的临床挑战。

研究表明KAT6A是一个潜在的驱动性致癌基因，在多种类型的癌症中被发现表达失调或异常。KAT6A过表达与ER+/HER2-乳腺癌患者的临床预后相关。ISM5043由英矽智能在一体化人工智能药物研发平台Pharma.AI的支持下设计而得，可抑制KAT6A并在转录水平阻断ERα表达，使其有潜力克服因ESR1突变带来的内分泌疗法耐药问题。并有望通过与CDK4/6抑制剂或新型口服选择性雌激素受体下调剂（SERD药物）联合以进一步扩大疗效。

美纳里尼集团首席执行官Elcin Barker Ergun表示，“英矽智能是全球人工智能制药领域的领先力量，我们很高兴能与英矽智能达成合作。我们希望通过双方的合作，探索一个前景广阔的方向，并开启变革性的抗肿瘤创新疗法。我们的目标是进一步提高患者的临床治疗效果，而靶向 KAT6的候选药物有望在乳腺癌及其他癌症领域实现这一目标。”

在临床前研究中，ISM5043在多个细胞系移植瘤模型(CDX)和人源异种移植模型(PDX)中均显示出对KAT6A的强效抑制作用，体现了卓越的疗效和良好的安全性。英矽智能在2023年圣安东尼奥乳腺癌研讨会（SABCS）上展示了该创新项目的最新数据。

英矽智能创始人兼首席执行官Alex Zhavoronkov 博士表示，“最新人工智能疗法有望为乳腺癌患者提供新的临床治疗选择，我们对此感到非常兴奋。美纳里尼旗下的Stemline在肿瘤学领域具有前瞻性的视野和对变革性疗法的深刻理解，是将ISM5043带入临床试验并完成临床开发的理想合作伙伴。”

根据协议条款，美纳里尼集团与英矽智能的合作交易总额逾5亿美元，包括 1200 万美元的首付款，以及后续开发、监管和商业里程碑。此外，英矽智能还有望获得潜在可达两位数的特许权使用费率。

关于英矽智能

英矽智能是一家由生成式人工智能驱动的临床阶段生物医药科技公司，通过下一代人工智能系统连接生物学、化学和临床试验分析，利用深度生成模型、强化学习、转换模型等现代机器学习技术，构建强大且高效的人工智能药物研发平台，识别全新靶点并生成具有特定属性分子结构的候选药物。英矽智能聚焦癌症、纤维化、免疫、中枢神经系统疾病、衰老相关疾病等未被满足医疗需求领域，推进并加速创新药物研发。

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关于美纳里尼集团

美纳里尼集团(Menarini Group)是一家领先的国际制药和诊断公司，营业额超过44亿美元，拥有17000多名员工。美纳里尼专注于需求亟待满足的治疗领域，产品包括心脏病学、肿瘤学、肺病学、胃肠病学、传染病学、糖尿病学、炎症和镇痛学。美纳里尼拥有18个生产基地和9个研发中心，产品销往全球140个国家/地区。如需了解更多信息，请访问www.menarini.com。

关于Stemline

Stemline 是美纳里尼集团的全资子公司，是一家商业阶段的生物制药公司，专注于创新肿瘤疗法的开发和商业化。在美国和欧盟，Stemline实现了ORSERDU®（elacestrant，艾拉司群）的商业化，这是一种口服内分泌疗法，获批用于治疗局部晚期或转移性乳腺癌的绝经后女性或者成年男性，患者具有ER+/HER2-和ESR1突变，并且接受了至少一种内分泌治疗后病情出现进展。Stemline同时推进了ELZONRIS®（tagraxofusp-erzs）商业化，这是一种靶向CD123的新型治疗药物，获批用于一种侵袭性癌症母细胞浆细胞样树突状细胞肿瘤（BPDCN）患者治疗，这也是迄今为止美国和欧盟唯一批准的治疗BPDCN的疗法。在欧洲Stemline还实现了NEXPOVIO®的商业化，这是一种治疗多发性骨髓瘤的XPO1抑制剂。此外，Stemline拥有广泛的处于不同临床阶段的小分子和生物制剂管线，用于治疗多种实体肿瘤和血液肿瘤。

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• KAT6 is an emerging target in hormone sensitive breast tumors and other cancers. Overexpression of KAT6A/B correlates with poor clinical outcomes in patients with ER+/HER2-breast cancer – the most common subtype. 

• The molecule has demonstrated strong preclinical activity. InSilico presented data on the novel molecule at the San Antonio Breast Cancer Symposium in early December. 

• This agreement includes upfront and milestone payments with a combined potential value ofover $500m and sales royalties.

The Menarini Group (“Menarini”), a leading international pharmaceutical and diagnostics company, and Stemline Therapeutics, Inc. (“Stemline”), a wholly-owned subsidiary of the Menarini Group focused on bringing transformational oncology treatments to cancer patients, along with clinical stage generative artificial intelligence (AI)-driven biotechnology company InSilico Medicine (“InSilico”), today announced that they have entered into an exclusive licensing agreement granting Stemline the global rights to develop and commercialize a novel, small molecule KAT6A inhibitor designed using InSilico’s AI platform, as a potential treatment for hormone sensitive cancers and other oncology indications.

Breast cancer is the most commonly diagnosed tumor type and the leading cause of cancer death among women, globally. Approximately 70% of breast cancers are estrogen receptor positive (ER+), and endocrine therapy remains the backbone of therapy for patients with ER+ breast cancer. However, tumors can develop a resistance to endocrine therapy, which in turn can lead to disease progression. This is a significant clinical challenge and highlights the urgent need for novel therapies to help overcome treatment resistance.

KAT6A is known to play an important role in several cancers. Overexpression of KAT6A correlates with poor clinical outcomes in patients with ER+/HER2- breast cancer, the most common subtype of breast cancer. In preclinical studies, the molecule has demonstrated potent inhibition against KAT6A in multiple CDX and PDX models with good efficacy and safety. InSilico presented data on the molecule at the San Antonio Breast Cancer Symposium in early December.

“We are delighted to enter a collaboration with InSilico that harnesses the power of generative AI as a leader in the field, to explore a promising new treatment approach and potentially unlock transformative new cancer therapies,” said Elcin Barker Ergun, CEO of the Menarini Group. “Having brought the first innovation in endocrine therapy after almost 20 years to the U.S. and Europe with elacestrant for ER+, HER2- breast cancer patients, our aim is to further augment patient outcomes, and targeting KAT6A can potentially serve that in breast cancer and beyond.”

The novel molecule was designed by InSilico’s R&D team with the help of its end-to-end Pharma Generative AI platform to inhibit KAT6A and block endocrine receptor (ER) at the transcriptional level, giving it the potential to overcome resistance to endocrine therapies due to mutation or ligandindependent constitutive activation of ER. Currently, endocrine therapy in combination with CDK4/6 inhibitors is the standard treatment for ER+/HER2- breast cancer patients with advanced or metastatic disease. Novel combinations with CDK4/6 inhibitors and/or new oral SERDs are needed to further extend outcomes.

“We are excited by the promise of our latest generative AI-designed therapy to provide a new potential treatment option for breast cancer patients,” said Alex Zhavoronkov, PhD, founder and co-CEO of InSilico Medicine. “With their innovative vision and deep focus in bringing transformational therapeutics in oncology, Stemline is the ideal partner to lead this molecule into development and through clinical trials.”

Under the terms of the agreement, Stemline will provide a $12 million upfront payment to InSilico. The combined value of the deal, including all development, regulatory, and commercial milestones, is over $500 million, followed by royalties up to double digits.

About Insilico Medicine

Insilico Medicine, a global clinical stage biotechnology company powered by generative AI, is connecting biology, chemistry, and clinical trials analysis using next-generation AI systems. The company has developed AI platforms that utilize deep generative models, reinforcement learning, transformers, and other modern machine learning techniques for novel target discovery and the generation of novel molecular structures with desired properties. Insilico Medicine is developing breakthrough solutions to discover and develop innovative drugs for cancer, fibrosis, immunity, central nervous system diseases, infectious diseases, autoimmune diseases, and aging-related diseases. www.insilico.com