- A Clinical Study to Find the Optimal Dose of an Investigational Treatment Called BNT323 When Used in Combination With Another Investigational Treatment, BNT327, and to Test if That Combination Treatment is Safe and Beneficial for Patients With Advanced Breast Cancer — Recruiting….
- Treatment being tested: BNT323 combined with BNT327 (both investigational agents) to determine optimal dosing, safety profile, and clinical efficacy in advanced breast cancer across hormone receptor-positive and hormone receptor-negative subtypes.
- Patient eligibility overview: Advanced breast cancer patients with HR+ or HR- status and HER2 expression; typical Phase I/II trials require adequate organ function, performance status, and prior treatment history requirements (specific details in full protocol).
- Quick orientation before opening the registry record.
- Checking recruitment status, phase and sponsor at a glance.
- Connecting this trial to nearby guidelines, Drug Science and education.
This is a Phase I/II, multi-site, open-label, two-part study designed to evaluate the efficacy, safety, optimized dose and contribution of components of BNT323 in combination with BNT327 in participants with hormone receptor-positive (HR+) or hormone receptor-negative (HR-), Human epidermal growth factor receptor (HER)2-positive, HER2-low (immunohistochemistry [IHC] 1+ or IHC 2+/in situ hybridization -), HER2-ultralow (IHC 0, with membrane staining) or HER2-null breast cancer (BC), or triple-negative breast cancer (TNBC).
- Key Inclusion Criteria (applicable to all participants and all parts unless otherwise specified): * Have pathologically documented BC that: * Is locally advanced, unresectable or metastatic. * Has a confirmed HER2 status as determined by the local laboratory (Part 1, Part 2 Cohorts 2 and 4) or the central laboratory (Part 2, Cohorts 1 and 3) from the most recently collected pre-randomization tumor sample. * Has a documented history of HER2 expression consistent with the subgroup definitions (i.e., HER2-low, HER2-ultralow, HER2-null, HER2-positive, or TNBC) as per current American Society of Clinical Oncology/College of American Pathologists guidelines. * Have measurable disease defined by RECIST v1.1. * Has left ventricular ejection fraction ≥55% by either echocardiography or multi-gated acquisition (scanning) within 28 days before randomization/enrollment. Key
Use the source registry for the full inclusion and exclusion criteria before discussing referral or enrolment.