Selinexor

In addition, the expansive elacestrant clinical development program updates reinforce its potential as a backbone endocrine therapy in combination settings, as well as in both metastatic and early stage breast cancer. FLORENCE, Italy and NEW YORK, Dec. 08, 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 meaningful median progression-free survival (mPFS) efficacy results from two combination regimens of the Phase 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 with the goal of improving patient outcomes. These data will be presented at the 2025 San Antonio Breast Cancer Symposium (SABCS), December 9-12. “The encouraging progression-free survival data increase our confidence in the role elacestrant could play as an endocrine therapy backbone in the combination setting,” said Virginia Kaklamani, MD, DSc, Professor of Medicine in the Division of Hematology/Oncology at UT Health San Antonio, and Leader of the Breast Cancer Program at UT Health San Antonio MD Anderson Cancer Center. “The safety profile of elacestrant in combination with everolimus or abemaciclib is consistent with the known safety profiles of each drug. No new safety signals have been observed.” The ELEVATE data to be presented at SABCS demonstrate that elacestrant in combination with everolimus or with abemaciclib shows a consistent PFS benefit, irrespective of ESR1 mutation status in patients with ER+/HER2- mBC, who experience disease progression on endocrine therapy (ET), with or without prior exposure to CDK4/6 inhibitors. These updated results also show that the safety of the combinations are consistent with the known safety profiles of each targeted therapy plus standard of care endocrine therapy. Phase 2 mPFS in months (95% CI) in all patients and subgroups Patient Population Elacestrant 345 mg QD+ Everolimus 7.5mg QD(n=50)Elacestrant 345 mg QD+ Abemaciclib 150 mg BID(n=60)All patients 8.3 [4.0 – 10.2]14.3 [7.3-16.6]Visceral disease 7.7 [3.8 – 9.4]14.3 [7.4-16.6]No prior fulvestrant 8.3 [4.2 – 12.9]14.8 [8.7-NR]No primary endocrine resistance 8.3 [4.0-12.9]14.3 [7.3-16.6]ESR1mut 8.7 [3.5 – 12.9]*ESR1wt 9.0 [4.2 – 12.7]*PIK3CAmut 8.3 [3.6 - 10.2]*PIK3CAwt 9.6 [5.6 - NR]* *Maturity not reached for PFS (95% CI) for genomic subgroups (ESR1 / PIK3CA) in the elacestrant + abemaciclib cohort. “The extensive evidence for elacestrant spans the monotherapy setting in our pivotal EMERALD study, now backed by two recent real-world data publications1, 2, and in its growing potential in combination regimens, as highlighted by the data presented at SABCS,” said Elcin Barker Ergun, CEO of the Menarini Group. “We remain deeply committed to fully exploring elacestrant’s potential benefit across multiple ongoing trials in both early stage and metastatic breast cancer.” Additionally, other elacestrant updates will be presented at SABCS, investigating its potential across the spectrum of breast cancer: Presentation Title: Elacestrant in combination with everolimus or abemaciclib in patients with ER+/HER2-locally advanced or metastatic breast cancer (mBC): phase 2 results from ELEVATE, an open-label, umbrella studyAbstract Number: 1255Presentation Date & Time: Thursday, December 11, 2025, 1:00 – 2:00 PM Location: Hemisfair1-2Presenting Author: Hope S. Rugo Presentation Title: Elacestrant alone or in combination with triptorelin in premenopausal women with ER+/HER2-early breast cancer: primary analysis from the phase 2 SOLTI-2104-PremiÈRe trialAbstract Number: 1123Presentation Date & Time: Friday, December 12, 2025, 7:30 – 7:33 AMLocation: 301 ABCPresenting Author: Mertixell Bellet 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: 1276Presentation Date & Time: Thursday, December 11, 2025, 12:30 – 2:00 PMLocation: Henry B. Convention CenterPresenting Author: Aditya Bardia Presentation Title: The ADELA study: 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) + CDK4/6iAbstract Number: 1141Presentation Date & Time: Wednesday, December 10, 2025, 12:30 – 2:00 PMLocation: Henry B. Convention CenterPresenting Author: Antonio Llombart-Cussac Presentation Title: ERADICATE: A phase Ib/II study of elacestrant plus trastuzumab deruxtecan in patients with CDK4/6 inhibitor and endocrine-resistant HR+/HER2-low or HER2-ultralow metastatic breast cancerAbstract Number: 2119Presentation Date & Time: Friday, December 12, 2025, 12:30 – 2:00 PMLocation: Henry B. Convention CenterPresenting Author: Sara L. Sammons Presentation Title: Hormonal receptor (HR)-positive HER2 negative breast cancer patients treated with preoperative Elacestrant and PULSAR adaptive radiotherapy: a phase II study (HELP Trial)Abstract Number: 1071Presentation Date & Time: Friday, December 12, 2025, 12:30 – 2:00 PMLocation: Henry B. Convention CenterPresenting Author: Luca Visani About The Elacestrant Clinical Development ProgramElacestrant 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 InformationWarning 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 GroupThe Menarini Group is a leading international pharmaceutical and diagnostics company, with a turnover of $5 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 ContactsThe Menarini GroupValeria Speroni CardiEmail: pressoffice@menarini.com Stemline Therapeutics, Inc.Cheya PopeEmail: media@menarinistemline.com 1 Lloyd et al. Clinical and genomic factors associated with elacestrant outcomes in ESR1-mutant metastatic breast cancer. Clin Cancer Res (2025). https://aacrjournals.org/clincancerres/article/doi/10.1158/1078-0432.CCR-25-3033/768341/Clinical-and-Genomic-Factors-Associated-with 2 Rugo et al. Real-World Outcomes of Elacestrant in ER+, HER2-, ESR1-mutant Metastatic Breast Cancer. Clin Cancer Res, 2025. CCR-25-3040R1. https://aacrjournals.org/clincancerres/article/doi/10.1158/1078-0432.CCR-25-3040/768340/Real-World-Outcomes-of-Elacestrant-in-ER-HER2-ESR1

SHANGHAI and HONG KONG, Dec. 2, 2025 /PRNewswire/ -- Antengene Corporation Limited (" Antengene", SEHK: 6996.HK), a leading innovative, commercial-stage global biotech company dedicated to discovering, developing and commercializing first-in-class and/or best-in-class medicines for autoimmune disease, solid tumors and hematological malignancies indications, today announced that the China National Medical Products Administration (NMPA) has approved the investigational new drug (IND) application for the Phase Ib/II CLINCH-2 study evaluating ATG-022 (CLDN18.2 antibody-drug conjugate [ADC]) in combination with MSD's (Merck & Co., Inc., Rahway, NJ, USA) anti-PD-1 therapy, KEYTRUDA® (pembrolizumab), as well as ATG-022 in combination with pembrolizumab and chemotherapy. CLINCH-2 is a Phase Ib/II study that will be led by its principal investigator Prof. Lin Shen at Beijing Cancer Hospital, the lead trial center. The study is designed to evaluate two combination regimens in patients with CLDN18.2-positive, HER2-negative, and PD-L1-positive (CPS≥1) unresectable or metastatic gastric cancer or gastroesophageal junction adenocarcinoma (GC/GEJC): ATG-022 in combination with pembrolizumab (A+P); and ATG-022 in combination with pembrolizumab plus the CAPOX chemotherapy regimen (A+P+C). The primary objective of the study is to assess the safety and tolerability of the two combination regimens, while the secondary objectives include evaluating the regimens' preliminary antitumor activity, assessing ATG-022's immunogenicity, and characterizing its pharmacokinetic (PK) profile. Antengene released updated clinical data from the Phase I/II CLINCH study of ATG-022 monotherapy in patients with advanced GC/GEJC at the European Society for Medical Oncology Congress 2025 (ESMO 2025). For details of the dataset, please refer to the press release published on October 20, 2025 (). The results demonstrated clear differentiation for ATG-022 in both safety and efficacy. In the 1.8 mg/kg dose cohort, the incidence of grade 3 or higher treatment-related adverse events was only 18.2%. Moreover, the study did not observe any ocular toxicity or interstitial lung disease, and the incidence of peripheral neuropathy reported in the study was relatively low. The efficacious doses (1.8mg/kg and 2.4mg/kg) have both demonstrated an objective response rate (ORR) of 40%. This is a strong validation of ATG-022's potential in combination with pembrolizumab and chemotherapy in the frontline setting. In addition, antitumor activity was observed across high, medium, and low CLDN18.2 expression levels, supporting the use of IHC 1+ ≥1% as the enrollment threshold for frontline combination therapy, indicating potential applicability to a much broader patient population compared to other CLDN18.2-targeting therapies. Furthermore, in the basket cohort of other CLDN18.2+ tumor types, efficacy was observed in a gynecologic tumor subtype, providing early proof of concept for potential expansion into tumor types beyond gastric cancer. Antengene will continue to advance both the ongoing CLINCH study and the newly approved CLINCH-2 study, with plans to share updated results at upcoming medical conferences to further demonstrate the clinical potential of ATG-022. 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 a CLDN18.2-targeted antibody-drug conjugate (ADC) with sub-nM affinity and fast internalization. Using a VC-MMAE linker-payload (DAR 4), ATG-022 has demonstrated potent activity across tumors with high, low, and ultra-low CLDN18.2 expression. ATG-022 has been granted two Orphan Drug designations (ODDs) by the U.S. Food and Drug Administration (FDA) for the treatment of gastric cancer and pancreatic cancer, and obtained Breakthrough Therapy Designation from China's National Medical Products Administration (NMPA) for treating CLDN18.2-positive, HER-2 negative unresectable or metastatic gastric or gastroesophageal junction adenocarcinoma (GC/GEJC) who have received at least two prior lines of therapy. About Antengene Antengene Corporation Limited ( "Antengene", SEHK: 6996.HK) is a global, R&D-driven, commercial-stage biotech company focused on developing first-in-class/best-in-class therapeutics for diseases with significant unmet medical needs. Its pipeline spans from preclinical to commercial stages and includes several in-house discovered programs, including ATG-022 (CLDN18.2 ADC), ATG-037 (oral CD73 inhibitor), ATG-101 (PD-L1 × 4-1BB bispecific antibody), ATG-031 (CD24-targeting macrophage activator), and ATG-042 (oral PRMT5-MTA inhibitor). Antengene has also developed AnTenGager™, a proprietary T cell engager 2.0 platform featuring "2+1" bivalent binding for low-expressing targets, steric hindrance masking, and proprietary CD3 sequences with fast on/off kinetics to minimize cytokine release syndrome (CRS) and enhance efficacy. These characteristics support the platform's broad applicability across autoimmune disease, solid tumors and hematological malignancies indications. To date, Antengene has obtained 32 investigational new drug (IND) approvals in the U.S. and Asia, and submitted new drug applications (NDAs) in 11 Asia Pacific markets. Its lead commercial asset, XPOVIO® (selinexor), is approved in Mainland of China, Taiwan China, Hong Kong China, Macau China, South Korea, Singapore, Malaysia, Thailand, Indonesia and Australia, and has been included in the national insurance schemes in five of these markets (Mainland of China, Taiwan China, Australia, South Korea and Singapore). 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. For more information, please contact: Investor Contacts: Donald Lung E-mail: [email protected] BD Contacts: Ariel Guo E-mail: [email protected] SOURCE Antengene Corporation Limited 21% more press release views with Request a Demo