IMP321 Plus First-line Paclitaxel in Metastatic Breast Carcinoma

Metastatic Breast Cancer Clinical Trial

Official title: IMP321 Phase I Study in Metastatic Breast Carcinoma Patients Receiving First-line Paclitaxel

Status Completed

Clinical Trial Summary

Open label, non-randomized, fixed dose-escalation phase I study, performed in ambulatory setting in patients receiving as a first line chemotherapy for metastatic breast carcinoma the standard 6 cycles of weekly paclitaxel (80 mg/m² at D1, D8 and D15 of a 4-week cycle). Three IMP321 doses (0.25, 1.25 and 6.25 mg) will be tested and given at D2 and D16 of this 4-week cycle, for 6 courses.

Clinical Trial Description

This study is an open label, non-randomized, fixed dose-escalation phase I study, performed in ambulatory setting with patients receiving as a first line chemotherapy for metastatic breast carcinoma the standard 6 cycles of paclitaxel (80 mg/m² at D1, D8 and D15 of every 4-week cycle). Twenty mg i.v. dexamethasone will be given in the first cycle before each paclitaxel infusion. Corticosteroids will not be administered after the first chemotherapy cycle if the first 3 i.v. infusions of paclitaxel have been well tolerated.

Three IMP321 dose levels (0.25, 1.25 and 6.25 mg) will be evaluated in three cohorts of at lesat 8 patients. At any given dose level the patients will be administered one dose every two weeks for a total of 24 weeks (12 injections in total), separated by 13-day intervals free of IMP321 administration.

The study drug will be given by subcutaneous injection:

• Cohort A: 0.25 mg s.c.

• Cohort B: 1.25 mg s.c.

• Cohort C: 6.25 mg s.c.

The repeated single doses will be administered on D2 and D16 of the 4-week cycles, on the day which follows chemotherapy.

After a screening performed between Week -2 and Day 1, patients will enter the main study period. Upon having completed the 6 cycles of IMP321 treatment at Week 23, they will have an ambulatory 'post-study' examination (at Week 25).

Cohort B will be undertaken once the safety and tolerability results of Cohort A have been satisfactory; the investigator will take his decision for involving the last 8 patients of the study after the 6th administration (Week 13 assessment) of the fifth patient of Cohort A. All cohorts will follow the same schedule

Standard clinical and laboratory safety examinations, CT scan and pharmacodynamic (PD) blood tests will be performed. A complete examination will be carried out at Week 13 (after the 6th drug dosing) and Week 25. ;

Study Design

Allocation: Non-Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

• Breast Neoplasms
• Metastatic Breast Cancer

• NCT number: NCT00349934
• Study type: Interventional
• Source: Immutep S.A.
• Status: Completed
• Phase: Phase 1
• Start date: July 2006
• Completion date: January 2010