Hormone Therapy + Immunotherapy for Advanced Breast Cancer

Recruiting at 595 trial locations

Overseen by Hope S Rugo

Age: 18+

Sex: Female

Travel: May Be Covered

Time Reimbursement: Varies

Trial Phase: Phase 3

Waitlist Available

Sponsor: National Cancer Institute (NCI)

No Placebo Group

Pivotal Trial (Near Approval)

Prior Safety Data

Breakthrough Therapy

Trial Summary

What is the purpose of this trial?

This randomized phase III trial studies tamoxifen citrate or letrozole together with bevacizumab to see how well it works compared with tamoxifen citrate or letrozole alone in treating women with stage IIIB or stage IV breast cancer. Estrogen can cause the growth of breast cancer cells. Hormone therapy using tamoxifen citrate or letrozole may fight breast cancer by blocking the use of estrogen by the tumor cells. Immunotherapy with monoclonal antibodies, such as bevacizumab, may induce changes in the body's immune system and may interfere with the ability of tumor cells to grow and spread. It is not yet known whether giving hormone therapy is more effective with or without bevacizumab in treating advanced breast cancer.

Research Team

Hope S Rugo

Principal Investigator

Alliance for Clinical Trials in Oncology

Eligibility Criteria

This trial is for postmenopausal women or premenopausal women on ovarian suppression with stage IIIB or IV breast cancer that responds to hormones. Participants should not have had major surgery recently, no history of significant bleeding, fistulas, or abdominal abscesses, and no severe cardiovascular issues. They must have a life expectancy of at least 12 weeks and be in good physical condition (ECOG <=1).

Inclusion Criteria

My kidney function test shows less than 1g of protein in my urine over 24 hours.

My breast cancer has been confirmed by tissue analysis.

The amount of protein in your urine is low.

Exclusion Criteria

Your platelet count is less than 100,000 per microliter.

Your creatinine level is higher than 2.0 mg/dL.

I have another active cancer besides non-melanoma skin cancer.

Treatment Details

Interventions

• Bevacizumab (Monoclonal Antibodies)
• Letrozole (Hormone Therapy)
• Tamoxifen Citrate (Hormone Therapy)

Trial Overview The study is testing the effectiveness of hormone therapies tamoxifen citrate or letrozole alone versus combined with the monoclonal antibody bevacizumab in advanced breast cancer. The goal is to see if adding bevacizumab improves outcomes by altering the immune system's response to tumor cells.

Participant Groups

Group I: Arm I (endocrine therapy with monoclonal antibody) Experimental Treatment 5 Interventions

Patients receive endocrine therapy\* (tamoxifen citrate\* or letrozole) PO QD on days 1-21 and bevacizumab 15 mg/kg IV over 30-90 minutes on day 1. Treatment repeats every 21 days in the absence of disease progression or unacceptable toxicity.

Group II: Arm II (endocrine therapy) Active Control 4 Interventions

Patients receive endocrine therapy\* (tamoxifen citrate\* or letrozole) PO QD on days 1-21. Treatment repeats every 21 days in the absence of disease progression or unacceptable toxicity.

Letrozole is already approved in Canada for the following indications:

Approved in Canada as Letrozole for:

• Adjuvant treatment of postmenopausal women with hormone receptor-positive early breast cancer
• First-line treatment of postmenopausal women with hormone receptor-positive advanced breast cancer

Who Is Running the Clinical Trial?

National Cancer Institute (NCI)

Lead Sponsor

Trials

14,080

Recruited

41,180,000+

Dr. Douglas R. Lowy

National Cancer Institute (NCI)

Chief Executive Officer since 2023

MD from New York University School of Medicine

Dr. Monica Bertagnolli

National Cancer Institute (NCI)

Chief Medical Officer since 2022

MD from Harvard Medical School