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Master Protocol: A Phase 1b / 2, Multicenter, Multi Arm Study of Evorpacept in Combination with Anti-cancer Therapies in Advanced / Metastatic Malignancies (ASPEN-09) Substudy Protocol: A Single-arm Phase 2 Multicenter Study of Evorpacept in Combination with Trastuzumab and Chemotherapy in Participants with Metastatic HER2-Positive Breast Cancer (ASPEN-09-03)

Status
Not yet recruiting
Phases
Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2025-522012-16-00
Acronym
AT148009
Enrollment
36
Registered
2026-01-23
Start date
Unknown
Completion date
Unknown
Last updated
2026-01-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Cancer

Brief summary

Overall response rate (ORR) using Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST v1.1) based on Blinded Independent Central Review (BICR) assessment.

Detailed description

• ORR based on Investigator assessment., • Clinical Benefit Rate (CBR), Duration of Response (DoR), and Progression Free Survival (PFS), using RECIST v1.1 based on BICR and Investigator assessment, and Overall Survival (OS)., • Adverse Events (AEs) as characterized by type, frequency, severity (as graded by National Cancer Institute Common Terminology Criteria for Adverse Events version 5.0 [NCI CTCAE v5.0]), timing, seriousness, and relationship to study drug., • Laboratory abnormalities as characterized by type, frequency, severity (as graded by NCI CTCAE v5.0) and timing., • PK parameters of evorpacept such as maximum concentration (Cmax), time at maximum concentration (Tmax), area under the concentration-time curve (AUC), clearance (CL), and terminal elimination half-life (t1/2) as data permit., • Presence of human serum anti-drug antibodies (ADAs) (anti-evorpacept antibodies).

Interventions

Sponsors

Alx Oncology Holdings Inc.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Overall response rate (ORR) using Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST v1.1) based on Blinded Independent Central Review (BICR) assessment.

Secondary

MeasureTime frame
• ORR based on Investigator assessment., • Clinical Benefit Rate (CBR), Duration of Response (DoR), and Progression Free Survival (PFS), using RECIST v1.1 based on BICR and Investigator assessment, and Overall Survival (OS)., • Adverse Events (AEs) as characterized by type, frequency, severity (as graded by National Cancer Institute Common Terminology Criteria for Adverse Events version 5.0 [NCI CTCAE v5.0]), timing, seriousness, and relationship to study drug., • Laboratory abnormalities as characterized by type, frequency, severity (as graded by NCI CTCAE v5.0) and timing., • PK parameters of evorpacept such as maximum concentration (Cmax), time at maximum concentration (Tmax), area under the concentration-time curve (AUC), clearance (CL), and terminal elimination half-life (t1/2) as data permit., • Presence of human serum anti-drug antibodies (ADAs) (anti-evorpacept antibodies).

Countries

France, Italy, Spain

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026