Tesetaxel Plus 3 Different PD-(L)1 Inhibitors in Patients With Triple-Negative MBC and Tesetaxel Monotherapy in Patients With HER2-Negative MBC

Stopped early · Phase 2

Conditions studied: Breast Cancer

In brief

CONTESSA TRIO is a multi-cohort, multicenter, Phase 2 study of tesetaxel, an investigational, orally administered taxane, in patients with metastatic breast cancer (MBC). In Cohort 1, approximately 200 patients with triple-negative MBC who have not received prior chemotherapy for advanced disease will be randomized 1:1:1 to receive tesetaxel plus either: (1) nivolumab; (2) pembrolizumab; or (3) atezolizumab. The primary efficacy endpoints for Cohort 1 are objective response rate (ORR) and progression free survival (PFS) in patients with programmed death-ligand 1 (PD-L1) positive status. In Cohort 2, approximately 60 elderly patients with human epidermal growth factor receptor 2 (HER2) negative MBC who have not received prior chemotherapy for advanced disease will receive tesetaxel monotherapy. The primary efficacy endpoints for Cohort 2 are ORR and PFS in patients with hormone receptor (HR)-positive, HER2-negative disease. In Cohort 3, approximately 60 non-elderly adult patients with HER2-negative MBC who have not received prior chemotherapy for advanced disease will receive tesetaxel monotherapy. The primary efficacy endpoints for Cohort 3 are ORR and PFS in patients with HR positive, HER2-negative disease.

Key facts

Study ID

NCT03952325

Run by

Odonate Therapeutics, Inc.

People needed

294

Starts

2019-07-09

Expected to finish

2021-06-23

Last updated by the study team

2021-07-30

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Female or male patients aged:
• Cohort 1: ≥ 18 years old
• Cohort 2: ≥ 65 years old
• Cohort 3: ≥ 18 to < 65 years old
• Histologically or cytologically confirmed breast cancer
• Most recent biopsy must be HER2-negative
• Cohort 1 only: Most recent biopsy must be hormone receptor (HR) (estrogen receptor and progesterone receptor) negative
• Measurable disease per RECIST 1.1.
• Patients with bone-only metastatic cancer must have a measurable lytic or mixed lytic-blastic lesion
• Known metastases to the CNS are permitted but not required
• Documented (including de novo): (a) locally advanced breast cancer that is not considered curable by surgery and/or radiation; or (b) metastatic breast cancer
• Disease-free interval of at least 12 months after the completion of systemic neoadjuvant or adjuvant chemotherapy for patients previously treated with systemic chemotherapy for a tumor surgically resected with curative intent
• Cohorts 2 and 3 only: Prior endocrine therapy with or without a cyclin-dependent kinase (CDK) 4/6 inhibitor unless endocrine therapy is not indicated. Any prior targeted therapies are permitted. There is no limit to the number of prior endocrine therapies.
• Cohort 1 only: At Screening, patients must have documented evidence of positive PD-L1 expression as assessed via immunohistochemistry (IHC) scoring by local, regional, or central laboratory testing
• Eastern Cooperative Oncology Group (ECOG) performance status 0, 1 or 2
• Adequate bone marrow, hepatic and renal function

You may not qualify if…

• Prior chemotherapy for locally advanced or metastatic disease
• Cohort 1 only: prior treatment with pembrolizumab, nivolumab, atezolizumab, any other PD-(L)1/PD-L2 inhibitor or a cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) inhibitor
• Current evidence or history of leptomeningeal disease
• Known human immunodeficiency virus infection, unless well controlled
• Known active hepatitis B or known active hepatitis C infection
• Other severe acute or chronic medical or psychiatric condition or laboratory abnormality that may increase the risk associated with Study participation or investigational product administration or may interfere with the interpretation of Study results
• Presence of neuropathy Grade > 1
• History of hypersensitivity to any of the Study drugs or any of their ingredients, as applicable
• Cohort 1 only:
• Chronic autoimmune disease
• Evidence of active, non-infectious pneumonia (eg, pneumonia due to autoimmune or connective tissue disease)
• Treatment with a live vaccine within 30 days prior to the first dose of nivolumab, pembrolizumab or atezolizumab
• History of active tuberculosis
• Prior organ transplantation including allogeneic stem cell transplantation
• Active infection requiring systemic therapy
• Current or prior use of immunosuppressive medication within 7 days prior to Cycle 1, Day 1
• Active autoimmune disease that might deteriorate when receiving an immunostimulatory agent
• Anticancer treatment, including endocrine therapy, radiotherapy (except stereotactic brain radiosurgery), chemotherapy or biologic therapy, ≤ 14 days prior to Enrollment
• Major surgery ≤ 28 days prior to Enrollment
• Less than 2 weeks or 5 plasma half-lives (whichever is greater) since last use of a medication or ingestion of an agent, beverage or food that is a known clinically relevant strong inhibitor or known clinically relevant inducer of the cytochrome P450 (CYP) 3A pathway

Where it is running

• Sarah Cannon Research Institute - Florida Cancer Specialists — Fort Myers, Florida, United States
• Florida Cancer Specialists and Research Institute — St. Petersburg, Florida, United States
• Florida Cancer Specialists and Research Institute - Panhandle Region — Tallahassee, Florida, United States
• Florida Cancer Specialists and Research Institute — West Palm Beach, Florida, United States
• Dana-Farber Cancer Institute — Boston, Massachusetts, United States
• New York Cancer and Blood Specialists — East Setauket, New York, United States
• West Cancer Center — Germantown, Tennessee, United States
• Texas Oncology - Baylor Charles A. Sammons Cancer Center — Dallas, Texas, United States
• Virginia Oncology Associates — Norfolk, Virginia, United States
• John Hopkins Singapore International Medical Centre — Singapore, Singapore
• National Cancer Centre Singapore — Singapore, Singapore
• Asan Medical Center — Seoul, South Korea

Full record on ClinicalTrials.gov

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