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AIPAC-003: A randomized, double-blind, placebo-controlled Phase 3 trial testing eftilagimod alpha (soluble LAG-3) in HER2-neg/low metastatic breast cancer patients receiving paclitaxel, following an open-label dose optimization

Status
Active, not recruiting
Phases
Phase 2Phase 3
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2024-511023-34-00
Acronym
IMP321-P016
Enrollment
99
Registered
2024-06-24
Start date
2023-05-05
Completion date
Unknown
Last updated
2025-10-20

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

Conditions

HER2-neg/low metastatic breast cancer

Brief summary

DOSE OPTIMIZATION LEAD-IN • Frequency, severity, and duration of adverse events (AEs). • Clinically relevant abnormalities in vital signs, physical examinations, 12-lead ECGs, and safety laboratory assessments. • Occurrence of dose-limiting toxicities (DLTs). • Determination of the OBD., PHASE 3 • Overall survival (OS) is defined as the time from randomization to death from any cause.

Detailed description

DOSE OPTIMIZATION LEAD-IN • Objective response rate (ORR) according to RECIST 1.1 by investigator assessment defined as the proportion of patients who have best overall response (BOR) of CR or PR., • Progression free survival (PFS) per RECIST 1.1, defined as the timefrom the date of first treatment to documented disease progression or death from any cause as assessed by the investigator assessment based on RECIST 1.1. Censuring rules as per FDA guideline. ., • Overall survival (OS) is defined as the time from the date of first treatment to death from any cause. Patients who are lost to follow-up and those who are alive at the date of data cut-off will be censored at the last date the patient was last known alive, or date of data cut-off, whichever occurs first., • Changes from baseline in quality of life (QOL) as assessed by EORTC QLQ-C30 over the course of the trial., • Plasma concentration time profile and derived PK parameters of efti at 30 and 90 mg (dose optimization lead-in only) dose levels., • Progression free survival (PFS) per RECIST 1.1, defined as the time from randomization to documented disease progression or death from any cause as assessed by the investigator assessment based on RECIST 1.1. Censuring rules as per FDA guideline., • Objective response rate (ORR) according to RECIST 1.1 by investigator assessment defined as the proportion of patients who have best overall response (BOR) of CR or PR., • Frequency, severity, and duration of adverse events (AEs), • Clinically relevant abnormalities in vital signs, physical examinations, 12-lead ECGs, and safety laboratory assessments.

Interventions

DRUGIMP321 Placebo
DRUGIMP321
DRUGPACLITAXEL

Sponsors

Immutep
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
DOSE OPTIMIZATION LEAD-IN • Frequency, severity, and duration of adverse events (AEs). • Clinically relevant abnormalities in vital signs, physical examinations, 12-lead ECGs, and safety laboratory assessments. • Occurrence of dose-limiting toxicities (DLTs). • Determination of the OBD., PHASE 3 • Overall survival (OS) is defined as the time from randomization to death from any cause.

Secondary

MeasureTime frame
DOSE OPTIMIZATION LEAD-IN • Objective response rate (ORR) according to RECIST 1.1 by investigator assessment defined as the proportion of patients who have best overall response (BOR) of CR or PR., • Progression free survival (PFS) per RECIST 1.1, defined as the timefrom the date of first treatment to documented disease progression or death from any cause as assessed by the investigator assessment based on RECIST 1.1. Censuring rules as per FDA guideline. ., • Overall survival (OS) is defined as the time from the date of first treatment to death from any cause. Patients who are lost to follow-up and those who are alive at the date of data cut-off will be censored at the last date the patient was last known alive, or date of data cut-off, whichever occurs first., • Changes from baseline in quality of life (QOL) as assessed by EORTC QLQ-C30 over the course of the trial., • Plasma concentration time profile and derived PK parameters of efti at 30 and 90 mg (dose optimization lead-in only)

Countries

Belgium, Spain

Outcome results

None listed

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