What this phase means
Phase 2: researchers already know a roughly safe dose (from phase 1). This stage asks whether the treatment actually helps the condition, and watches side effects more closely.
Phase labels are FDA/ICH categories applied to the registry Phase field. They are not a finding that this study succeeded.
What the registry says happens
If you join, the listed intervention(s) are Zongertinib, Trastuzumab deruxtecan, or Trastuzumab emtansine. The registry lists allocation as randomized. This study is open to adults aged 18 years and older with different types of HER2+ cancer that has spread and cannot be removed by surgery.
They plan to enroll about 910 people at 103 sites. Taking part typically means taking a study drug (or dummy pill) plus check-ins.
Official title (unrewritten)
Beamion BCGC-1: A Phase Ib Dose Escalation and Phase II Dose Optimization, Randomized, Open-label, Multicenter Trial of Oral Zongertinib (BI 1810631) Alone or in Combination With Other Agents for the Treatment of Patients With Advanced HER2+ Metastatic Breast Cancer (mBC), Metastatic Gastric, Gastroesophageal Junction, or Esophageal Adenocarcinoma (mGEAC), or Metastatic Colorectal Cancer (mCRC)
Interventions: Zongertinib, Trastuzumab deruxtecan, Trastuzumab emtansine, Trastuzumab, Capecitabine, mFOLFOX6, zanidatamab, Docetaxel
Primary outcome (registry wording): Dose escalation (Phase Ib): Occurrence of dose-limiting toxicities (DLTs) in the maximum tolerated dose (MTD) evaluation period