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 Evorpacept (ALX148), Trastuzumab, or Paclitaxel. The registry lists allocation as na. The Substudy Protocol ASPEN-09-03 is a Phase 2, single-arm, multicenter study evaluating the how well it works, safety, and tolerability of evorpacept in combination with trastuzumab and chemotherapy in participants with HER2-positive metastatic breast cancer who have previously received trastuzumab-deruxtecan.
They plan to enroll about 120 people at 61 sites. Taking part typically means taking a study drug (or dummy pill) plus check-ins.
Official title (unrewritten)
Protocol ASPEN-09-03: A Single-arm Phase 2 Multicenter Study of Evorpacept in Combination With Trastuzumab and Chemotherapy in Participants With Metastatic HER2-Positive Breast Cancer, a Substudy Under Master Protocol ASPEN-09: A Phase 1b/2, Multicenter, Multi Arm Study of Evorpacept in Combination With Anti-cancer Therapies in Advanced / Metastatic Malignancies
Interventions: Evorpacept (ALX148), Trastuzumab, Paclitaxel, Capecitabine, Eribulin, Gemcitabine, Vinorelbine
Primary outcome (registry wording): Overall Response Rate (ORR) using RECIST v1.1 based on BICR assessment