NCT02229084

Vaccination of High Risk Breast Cancer Patients

A Combined Phase I/II Feasibility-and-Efficacy Study of a Carbohydrate Mimotope-based Vaccine With MONTANIDE™ ISA 51 VG Combined With Neoadjuvant Chemotherapy

• Status: Completed
• Phase: Phase 1 / Phase 2
• Study type: Interventional
• Enrollment: 58 (actual)
• Sponsor: University of Arkansas · Academic / Other
• Sex: Female
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The purpose of this study is to evaluate a new investigational cancer vaccine, P10s-PADRE in combination with standard neoadjuvant chemotherapy and surgery in patients with clinical stage I, II or III estrogen-receptor (ER)-positive, HER2-negative breast cancer.

Detailed description

The purpose of this study is to evaluate an investigational agent, P10s-PADRE, a peptide mimotope-based vaccine, in combination with standard neoadjuvant chemotherapy in patients with clinical stage I, II or III estrogen-receptor (ER)-positive, HER2-negative breast cancer. This is a single-arm, multi-site Phase I/II study designed with the two goals being (1) to evaluate the feasibility of combining vaccination with the P10s-PADRE formulation with neoadjuvant chemotherapy and (2) to determine if the polymerase chain reaction (pCR) rate among ER-positive, HER2-negativebreast-cancer patients treated with the combination is significantly higher than the 8% rate observed among ER-positive breast-cancer subjects in a pooled analysis of seven randomized clinical trials. P10s-PADRE vaccine with MONTANIDE™ ISA 51 VG as adjuvant will be given in combination with neoadjuvant chemotherapy in female patients with clinical stage I, II or III ER-positive, HER2-negative breast cancer. This combined Phase I/II feasibility-and-efficacy study will have three parts. Its first part will be a Phase I evaluation of the safety, tolerability, and feasibility of eliciting adequate IgG response with P10s-PADRE when administered in combination with SoC neoadjuvant chemotherapy. The study's second and third parts will respectively constitute Stages 1 and 2 of the Phase II primary-efficacy evaluation of Chemovax using a Simon optimal two-stage design To evaluate the feasibility of eliciting adequate immune response with P10s-PADRE when it is administered in combination with neoadjuvant chemotherapy, we will sequentially evaluate different schedules of vaccination relative to chemotherapy, and stop evaluating as soon as we have identified a feasible schedule. To this end, we have defined five different Chemovax schedules, and named them A, B, C, D, and E;

Conditions

• Breast Cancer
• Breast Neoplasms

Interventions

Type	Name	Description
BIOLOGICAL	P10s-PADRE/ MONTANIDE™ ISA 51 VG	Eligible subjects will be enrolled and immunized by SC administration of P10s-PADRE vaccine on each of 3 separate occasions concurrent with chemotherapy.
DRUG	Doxorubicin	Doxorubicin (60 mg/m2) and cyclophosphamide (600 mg/m2) (AC) will be administered concurrently every three weeks for four cycles followed by docetaxel (75 mg/m2) every three weeks for four cycles.
DRUG	Cyclophosphamide	Doxorubicin (60 mg/m2) and cyclophosphamide (600 mg/m2) (AC) will be administered concurrently every three weeks for four cycles followed by docetaxel (75 mg/m2) every three weeks for four cycles.
DRUG	Docetaxel	Doxorubicin (60 mg/m2) and cyclophosphamide (600 mg/m2) (AC) will be administered concurrently every three weeks for four cycles followed by docetaxel (75 mg/m2) every three weeks for four cycles. If docetaxel is not tolerated, paclitaxel (175mg/m2) may be used in its place.

Timeline

• Start date: 2015-01-14
• Primary completion: 2023-01-03
• Completion: 2023-01-03
• First posted: 2014-08-29
• Last updated: 2024-11-07
• Results posted: 2024-05-23

Locations

2 sites across 1 country: United States

Regulatory

• FDA-regulated drug study