ISM5043 / Insilico Medicine, Menarini - LARVOL DELTA

Menarini Group and Insilico Medicine Enter Global Exclusive License Agreement for Novel KAT6 Inhibitor for Potential Breast Cancer Treatment and Other Oncology Indications (Businesswire) - "The Menarini Group...and Stemline Therapeutics, Inc...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....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."

Licensing / partnership • Breast Cancer • Oncology

ISM5043, a novel, selective KAT6 inhibitor for the treatment of advanced and refractory ER+ breast cancer (SABCS 2023) - "ISM5043 (0.3 mg/kg, QD), in combination with tamoxifen (20 mg/kg, QD) exhibited synergistic effect against tumor growth, with a Q value of 1.25 based on Jin's equation. Notably, ISM5043 displayed a strong anti-tumor effect (TGI of 67.7% and 83.6% at 3 and 10 mg/kg QD, respectively) as monotherapy, in a patient-derived ER+/HER2- breast cancer xenograft model representing disease progression following multiple prior lines of treatment (including palbociclib in combination with letrozole). ISM5043 also showed favorable ADME properties as well as good pharmacokinetic and safety profiles. Taken together, these data support the clinical evaluation of ISM5043 as a targeted therapy in patients with advanced and refractory ER+ breast cancer."

Metastases • Breast Cancer • HER2 Breast Cancer • HER2 Negative Breast Cancer • Hormone Receptor Breast Cancer • Hormone Receptor Positive Breast Cancer • Oncology • Solid Tumor • ER • HER-2 • KAT6A • KAT6B