Selinexor

Preliminary efficacy analysis from the elacestrant plus everolimus and ribociclib cohorts of the ELEVATE study, along with updated safety data from additional cohorts of elacestrant plus targeted therapy combination arms, will be presented. These data highlight elacestrant’s potential role as an endocrine therapy backbone in combination with various targeted agents for patients with ER+/HER2- mBC. The robust elacestrant clinical development program across wide-ranging studies further solidifies its potential in monotherapy and combination settings, in mBC and in early breast cancer. FLORENCE, Italy and NEW YORK, May 22, 2025 (GLOBE NEWSWIRE) -- 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, will present updated preliminary efficacy and safety results from the Phase 1b/2 ELEVATE study in patients with estrogen receptor-positive (ER+), HER2-negative (HER2-) locally advanced or metastatic breast cancer (mBC). The ELEVATE study was designed to evaluate the safety and efficacy of oral-oral combination treatment options to overcome different resistance mechanisms observed in ER+/HER2- mBC and improve patient outcomes. Additionally, various other trial-in-progress updates will be presented, investigating elacestrant’s potential to become an endocrine therapy (ET) backbone across the spectrum of breast cancer. These data will be presented at the 2025 American Society of Clinical Oncology (ASCO) Annual Meeting. The ELEVATE study is comprised of six treatment regimens evaluating elacestrant in combination with CDK4/6 inhibitors (palbociclib, abemaciclib and ribociclib) and with inhibitors of the PI3K/AKT/mTOR pathway (everolimus, alpelisib and capivasertib). ELEVATE results reported at ASCO 2025 (abstract 1070/49) include updated efficacy data which demonstrate favorable preliminary progression-free survival (PFS) from the elacestrant plus ribociclib and the elacestrant plus everolimus cohorts. A recommended phase 2 dose (RP2D) was determined to be elacestrant 345 mg plus ribociclib 400 mg. The RP2D of elacestrant 345 mg plus everolimus 7.5 mg was previously reported. “It is encouraging to see the positive preliminary efficacy and safety results when everolimus and ribocilib, respectively, are combined with elacestrant. These findings are consistent with the promising elacestrant plus abemaciclib cohort data from the same study that was presented last December, which also demonstrated favorable preliminary efficacy and safety in this setting,” said Hope S. Rugo, MD, Director, Women's Cancers Program and Division Chief, Breast Medical Oncology, City of Hope Comprehensive Cancer Center. “As the progression-free survival data and safety data continue to mature across the various cohorts of the ELEVATE study, we are encouraged by elacestrant’s potential to become an endocrine therapy backbone in combination regimens for the treatment of metastatic breast cancer.” Additional data reported separately (abstract 1079/58) provided updated Phase 1b/2 safety results from four cohorts of the ELEVATE study, including elacestrant plus ribociclib, everolimus, alpelisib, and capivasertib. These updated preliminary results show that the combinations are consistent with the known safety profiles of each targeted therapy plus standard of care endocrine therapy. “These data continue to underscore the potential value of elacestrant as a combination partner in the ER+/HER2- metastatic breast cancer treatment landscape,” said Elcin Barker Ergun, CEO of the Menarini Group. “We are also exploring the potential of elacestrant in other patient populations, including our currently enrolling ELEGANT study, which is designed to assess its potential benefit in early breast cancer patients with high risk of recurrence.” In addition, the company will be presenting other data at the ASCO Annual Meeting. See below for a complete list of Menarini Stemline abstracts. Menarini Stemline Abstracts: Presentation Title: Elacestrant (Ela) combinations with ribociclib (Ribo) and everolimus (Eve) in patients (pts) with ER+/HER2- locally advanced or metastatic breast cancer (mBC): Update from ELEVATE, a phase (Ph) 1b/2, open-label, umbrella study. Abstract Number: 1070 Presentation Date & Time: Monday, June 2, 9:00 AM – 12:00 PM CT Location: Poster Bd 49 Presenting Author: Hope S. Rugo Presentation Title: Elacestrant combinations in patients (pts) with ER+/HER2- locally advanced or metastatic breast cancer (mBC): Safety update from ELEVATE, a phase (Ph) 1b/2, open-label, umbrella study. Abstract Number: 1079 Presentation Date & Time: Monday, June 2, 9:00 AM – 12:00 PM CT Location: Poster Bd 58 Presenting Author: Nancy Chan Presentation Title: ADELA: a double-blind, placebo-controlled, randomized phase 3 trial of Elacestrant (ELA) + everolimus (EVE) versus ELA + placebo (PBO) in ER+/HER2- advanced breast cancer (aBC) patients with ESR1-mutated tumors progressing on endocrine therapy (ET) + CDK4/6i. Abstract Number: TPS1129 Presentation Date & Time: Monday, June 2, 9:00 AM – 12:00 PM CT Location: Poster Bd 103b Presenting Author: Antonio Llombart-Cussac Presentation Title: ELCIN: Elacestrant in women and men with CDK4/6 Inhibitor (CDK4/6i)-naïve estrogen receptor-positive (ER+), HER2-negative (HER2-) metastatic breast cancer (mBC): an open-label multicenter phase 2 study. Abstract Number: TPS1127 Presentation Date & Time: Monday, June 2, 9:00 AM – 12:00 PM CT Location: Poster Bd 102b Presenting Author: Virginia G. Kaklamani Presentation Title: ELEGANT: Elacestrant versus standard endocrine therapy (ET) in women and men with node-positive, estrogen Receptor-positive (ER+), HER2-negative (HER2-), early breast cancer (eBC) with high risk of recurrence in a global, multicenter, randomized, open-label phase 3 study. Abstract Number: TPS619 Presentation Date & Time: Monday, June 2, 9:00 AM – 12:00 PM CT Location: Poster Bd 210a Presenting Author: Aditya Bardia Presentation Title: EORTC-2129-BCG: Elacestrant for treating ER+/HER2- breast cancer patients with ctDNA relapse (TREAT ctDNA) Abstract Number: TPS620 Presentation Date & Time: Monday, June 2, 9:00 AM – 12:00 PM CT Location: Poster Bd 210b Presenting Author: Michail Ignatiadis About The Elacestrant Clinical Development Program Elacestrant is also being investigated in several company-sponsored clinical trials in metastatic breast cancer disease, alone or in combination with other therapies. ELEVATE ( NCT05563220 ) is a phase 1b/2 clinical trial evaluating the safety and efficacy of elacestrant combined with alpelisib, everolimus, capivasertib, palbociclib, ribociclib or abemaciclib. ELECTRA ( NCT05386108 ) is an open-label phase 1b/2, multicenter study evaluating elacestrant in combination with abemaciclib in patients with ER+, HER2- breast cancer. The phase 2 portion evaluates this treatment regimen in patients with brain metastases. ELCIN ( NCT05596409 ) is a phase 2 trial evaluating the efficacy of elacestrant in patients with ER+, HER2- advanced/metastatic breast cancer who received one or two prior hormonal therapies and no prior CDK4/6 inhibitors in the metastatic setting. ADELA ( NCT06382948 ) is a phase 3 randomized, double-blinded trial evaluating elacestrant in combination with everolimus in patients with ER+, HER2- mBC with ESR1-mut tumors. Elacestrant is also being evaluated in additional investigator-led trials, in trials conducted in collaboration with other companies, in metastatic breast cancer as well as in early disease. About ORSERDU (elacestrant) U.S. Indication: ORSERDU (elacestrant), 345 mg tablets, is indicated for the treatment of postmenopausal women or adult men with estrogen receptor (ER)-positive, human epidermal growth factor receptor 2 (HER2)-negative, ESR1 -mutated advanced or metastatic breast cancer with disease progression following at least one line of endocrine therapy. Full prescribing information for the U.S. can be found at www.orserdu.com . Important Safety Information Warning and Precautions Dyslipidemia : Hypercholesterolemia and hypertriglyceridemia occurred in patients taking ORSERDU at an incidence of 30% and 27%, respectively. The incidence of Grade 3 and 4 hypercholesterolemia and hypertriglyceridemia were 0.9% and 2.2%, respectively. Monitor lipid profile prior to starting and periodically while taking ORSERDU. Embryo-Fetal Toxicity : Based on findings in animals and its mechanism of action, ORSERDU can cause fetal harm when administered to a pregnant woman. Advise pregnant women and females of reproductive potential of the potential risk to a fetus. Advise females of reproductive potential to use effective contraception during treatment with ORSERDU and for 1 week after the last dose. Advise male patients with female partners of reproductive potential to use effective contraception during treatment with ORSERDU and for 1 week after the final dose. Adverse Reactions Serious adverse reactions occurred in 12% of patients who received ORSERDU. Serious adverse reactions in >1% of patients who received ORSERDU were musculoskeletal pain (1.7%) and nausea (1.3%). Fatal adverse reactions occurred in 1.7% of patients who received ORSERDU, including cardiac arrest, septic shock, diverticulitis, and unknown cause (one patient each). The most common adverse reactions ( > 10%) , including laboratory abnormalities, of ORSERDU were musculoskeletal pain (41%), nausea (35%), increased cholesterol (30%), increased AST (29%), increased triglycerides (27%), fatigue (26%), decreased hemoglobin (26%), vomiting (19%), increased ALT (17%), decreased sodium (16%), increased creatinine (16%), decreased appetite(15%), diarrhea (13%), headache (12%), constipation (12%), abdominal pain (11%), hot flush (11%), and dyspepsia (10%). Drug interactions Concomitant use with CYP3A4 Inducers and/or inhibitors : Avoid concomitant use of strong or moderate CYP3A4 inhibitors with ORSERDU. Avoid concomitant use of strong or moderate CYP3A4 inducers with ORSERDU. Use in specific populations Lactation : Advise lactating women to not breastfeed during treatment with ORSERDU and for 1 week after the last dose. Hepatic Impairment : Avoid use of ORSERDU in patients with severe hepatic impairment (Child-Pugh C). Reduce the dose of ORSERDU in patients with moderate hepatic impairment (Child-Pugh B). The safety and effectiveness of ORSERDU in pediatric patients have not been established. To report SUSPECTED ADVERSE REACTIONS, contact Stemline Therapeutics, Inc. at 1-877-332-7961 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . About The Menarini Group The Menarini Group is a leading international pharmaceutical and diagnostics company, with a turnover of $4.7 billion and over 17,000 employees. Menarini is focused on therapeutic areas with high unmet needs with products for cardiology, oncology, pneumology, gastroenterology, infectious diseases, diabetology, inflammation, and analgesia. With 18 production sites and 9 Research and Development centers, Menarini’s products are available in 140 countries worldwide. For further information, please visit www.menarini.com . About Stemline Therapeutics Inc. Stemline Therapeutics, Inc. (“Stemline”), a wholly-owned subsidiary of the Menarini Group, is a commercial-stage biopharmaceutical company focused on bringing transformational oncology treatments to patients. Stemline commercializes elacestrant, an oral endocrine therapy indicated for the treatment of postmenopausal women or adult men with estrogen receptor (ER)-positive, human epidermal growth factor receptor 2 (HER2)-negative, ESR1 -mutated advanced or metastatic breast cancer with disease progression following at least one line of endocrine therapy, in the U.S., Europe, and other global regions. Stemline also commercializes tagraxofusp-erzs, a novel targeted therapy directed to CD123, for patients with blastic plasmacytoid dendritic cell neoplasm (BPDCN), an aggressive hematologic cancer, in the United States, Europe, and other global regions. In addition, Stemline commercializes selinexor, an XPO1 inhibitor for multiple myeloma, in Europe. The company is also conducting multiple label-expansion studies with elacestrant and tagraxofusp in breast and hematologic cancer indications, respectively, and has an extensive clinical pipeline of additional drug candidates in various stages of development for a host of solid and hematologic cancers. Media Contacts The Menarini Group Valeria Speroni Cardi Email: pressoffice@menarini.com Stemline Therapeutics, Inc. Cheya Pope Email: media@menarinistemline.com Legal Disclaimer: EIN Presswire provides this news content "as is" without warranty of any kind. We do not accept any responsibility or liability for the accuracy, content, images, videos, licenses, completeness, legality, or reliability of the information contained in this article. If you have any complaints or copyright issues related to this article, kindly contact the author above.

//  ▶ATG-022是德琪医药的一款CLDN18.2抗体偶联药物（ADC）；KEYTRUDA®（帕博利珠单抗）是默沙东的一款PD-1抑制剂。中国上海和香港，2025年5月20日–致力于研发，生产和销售同类首款及/或同类最优血液及实体肿瘤疗法的商业化阶段领先创新生物制药公司–德琪医药有限公司（简称“德琪医药”，香港交易所股票代码：6996.HK）今日宣布公司已与默沙东（默沙东是美国新泽西州罗威市默克公司的公司商号）达成一项全球临床合作，将共同开展一项旨在评估ATG-022 （CLDN18.2抗体偶联药物[ADC]）联合默沙东的PD-1抑制剂KEYTRUDA®（帕博利珠单抗）用于治疗晚期实体瘤患者的临床研究。在2025年美国临床肿瘤学会胃肠道肿瘤学术会议（ASCO GI 2025）上，德琪医药公布了其I/II期CLINCH研究的最新数据。结果显示，在CLDN18.2中高表达（IHC 2+ ≥ 20%）患者中，客观缓解率（ORR）为42.9%，疾病控制率（DCR）为95.2%；在CLDN18.2低表达（IHC 2+ < 20%）患者中，ORR为30.0%，DCR为50.0%。研究还显示，ATG-022具有良好的安全性和较长的治疗持续时间，未观察到眼部或神经毒性，以及间质性肺病等不良反应。ATG-022在全球研发格局中具备独特优势，已有数据支持其在胃癌中对Claudin 18.2高表达、低表达及超低表达患者均展现出有意义的疗效。这一广谱抗肿瘤活性使ATG-022相比其他CLDN18.2靶向疗法，有望为更广泛的患者群体带来治疗新选择。KEYTRUDA®为已注册商标，商标权利人为美国新泽西州罗威市Merck & Co., Inc.的子公司 Merck Sharp & Dohme LLC。关于ATG-022  ATG-022是一款被作用于CLDN18.2这一紧密连接蛋白的抗体偶联药物（ADC），而紧密连接蛋白属于一种细胞黏附分子。在正常情况下，细胞间的紧密连接蛋白会形成调节细胞渗透性的屏障。但在肿瘤中，细胞极性变化可导致紧密连接蛋白在细胞表面异常表达。CLDN18.2的过度表达常见于胃癌、食道癌、胆管癌、胰腺癌和其他多种原发恶性肿瘤。美国食品药品监督管理局 (FDA) 授予了 ATG-022两项孤儿药资格认定，分别用于治疗胃癌和胰腺癌。来自正在开展的CLINCH研究的数据显示，ATG-022在不同CLDN18.2表达水平的胃癌患者中，包括高表达、低表达及极低表达患者均显示出良好的临床疗效。这一广谱活性显示出ATG-022在CLDN18.2阳性肿瘤患者中具备覆盖更大治疗人群的潜力。此外，在CLDN18.2低表达患者中观察到的疗效也为治疗其他具有类似CLDN18.2表达特征的肿瘤类型带来了新的治疗前景。关于德琪医药  德琪医药有限公司（简称“德琪医药”，香港交易所股票代码：6996.HK）是一家以研发为驱动，并已进入商业化阶段的生物制药领先企业，以“医者无疆，创新永续”为愿景，德琪医药专注于血液及实体肿瘤领域的同类首款和同类最优疗法的早期研发、临床研究、药物生产及商业化，致力于通过提供突破性疗法，改善全球患者生活质量。 德琪医药现已建立起一条拥有9款从临床延展至商业化阶段的肿瘤药物资产研发管线，其中，6款产品具有全球权益，3款产品具有亚太权益。公司已在美国及多个亚太市场获得31个临床批件（IND），并在11个亚太市场递交了新药上市申请（NDA）。目前，希维奥®（塞利尼索片）已获得中国大陆、中国台湾、中国香港、中国澳门、韩国、新加坡、马来西亚、泰国、印度尼西亚和澳大利亚的新药上市批准。前瞻性陈述   本文所作出的前瞻性陈述仅与本文作出该陈述当日的事件或资料有关。除法律规定外，于作出前瞻性陈述当日之后，无论是否出现新资料、未来事件或其他情况，我们并无责任更新或公开修改任何前瞻性陈述及预料之外的事件。请细阅本文，并理解我们的实际未来业绩或表现可能与预期有重大差异。本文内有关任何董事或本公司意向的陈述或提述乃于本文刊发日期作出。任何该等意向均可能因未来发展而出现变动。有关这些因素和其他可能导致未来业绩与任何前瞻性声明存在重大差异的因素的进一步讨论，请参阅我们截至2024年12月31日的公司年报中描述的其他风险和不确定性，以及之后向香港证券交易所提交的文件。Antengene Enters into a Global Clinical Collaboration with MSD to Evaluate ATG-022 (CLDN18.2 ADC) In Combination with KEYTRUDA® (pembrolizumab)- ATG-022 is Antengene’s CLDN18.2 antibody-drug conjugate; KEYTRUDA® (pembrolizumab) is MSD’s anti-PD-1 therapy.Shanghai and Hong Kong, PRC, May 20, 2025 — Antengene Corporation Limited (“Antengene”, SEHK: 6996.HK), a leading innovative, commercial-stage global biopharmaceutical company dedicated to discovering, developing and commercializing first-in-class and/or best-in-class medicines for cancer, today announced it has entered into a global clinical collaboration with MSD (Merck & Co., Inc., Rahway, NJ, USA) to evaluate the combination of ATG-022, a CLDN18.2-targeting antibody-drug conjugate (ADC), and MSD’s anti-PD-1 therapy, KEYTRUDA® (pembrolizumab) in patients with advanced solid tumors.At the 2025 American Society of Clinical Oncology Gastrointestinal Cancers Symposium (ASCO GI 2025), Antengene presented the latest data from its Phase I/II CLINCH study. Results showed anobjective response rate (ORR) of 42.9%and a disease control rate (DCR) of 95.2% in patients withmoderate to high CLDN18.2 expression (IHC 2+ ≥ 20%). Additionally, the study demonstrated anORR of 30.0% and a DCR of 50.0% in patients with low CLDN18.2 expression (IHC 2+ < 20%). ATG-022 also exhibited a favorable safety profile and extended treatment durations, with no observed cases of ophthalmological or neurological toxicities, nor interstitial lung disease.ATG-022 is uniquely positioned in the global landscape, with data supporting meaningful efficacy across all levels of Claudin 18.2 expression in gastric cancer, including high, low, and ultra-low expressors. This broad-spectrum activity positions ATG-022 as a promising treatment for a wider patient population compared to other CLDN18.2-targeting therapies.KEYTRUDA® is a registered trademark of Merck Sharp & Dohme LLC, a subsidiary of Merck & Co., Inc., Rahway, NJ, USA.About ATG-022 ATG-022 is an antibody-drug conjugate (ADC) designed to target CLDN18.2, a member of the Claudin family of cell adhesion molecules. Under normal conditions, Claudins are located within tight junctions between cells, forming a barrier to regulate cell permeability. However, in cancer, Claudins are aberrantly expressed on the cell surface due to changes in cell polarity. CLDN18.2 is frequently overexpressed in a range of primary malignant tumors, including gastric, esophageal, cholangiocarcinoma, and pancreatic cancers. The U.S. Food and Drug Administration (FDA) has awarded Orphan Drug Designations to ATG-022, for gastric and pancreatic cancers.Data from the ongoing CLINCH study demonstrated that ATG-022 delivers robust efficacy across all levels of CLDN18.2 expression in gastric cancer patients, including those with high, low, and ultra-low expression. This broad activity positions ATG-022 as a potential market leader, capable of addressing the largest patient population with CLDN18.2-positive tumors. Furthermore, the strong efficacy observed in patients with low CLDN18.2 expression suggests promise for treating other tumor types with similar expression profiles.About Antengene   Antengene Corporation Limited (“Antengene”, SEHK: 6996.HK) is a leading commercial-stage R&D-driven global biopharmaceutical company focused on the discovery, development, manufacturing and commercialization of innovative first-in-class/best-in-class therapeutics for the treatment of hematologic malignancies and solid tumors, in realizing its vision of “Treating Patients Beyond Borders”. Antengene has built a pipeline of 9 oncology assets at various stages going from clinical to commercial, including 6 with global rights, and 3 with rights for the APAC region. To date, Antengene has obtained 31 investigational new drug (IND) approvals in the U.S. and Asia, and submitted new drug applications (NDAs) in 11 Asia Pacific markets, with the NDA for XPOVIO® (selinexor) already approved in Mainland of China, Taiwan China, Hong Kong China, Macau China, South Korea, Singapore, Malaysia, Thailand, Indonesia and Australia.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, we undertake 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. For a further discussion of these and other factors that could cause future results to differ materially from any forward-looking statement, please see the other risks and uncertainties described in the Company’s Annual Report for the year ended December 31, 2024, and the documents subsequently submitted to the Hong Kong Stock Exchange.