BENITIONSClinical Trial Intelligence

Hormone Therapy With or Without Combination Chemotherapy in Treating Women Who Have Undergone Surgery for Node-Negative Breast Cancer (The TAILORx Trial)

Phase 3 Active, not recruiting NCT00310180

ConditionBreast Adenocarcinoma, Hormone Receptor Positive, Stage IA Breast Cancer AJCC v7, Stage IB Breast Cancer AJCC v7
PhasePhase 3
SponsorNational Cancer Institute (NCI)
StatusActive, not recruiting
Enrollment10,273 participants
InterventionsAnastrozole, Exemestane, Laboratory Biomarker Analysis, Letrozole, Quality-of-Life Assessment
Start dateApr 7, 2006
Completion dateMar 2, 2018
Results postedMar 12, 2019

Summary

This randomized phase III trial studies the best individual therapy for women who have node-negative, estrogen-receptor positive breast cancer by using a special test (Oncotype DX), and whether hormone therapy alone or hormone therapy together with combination chemotherapy is better for women who have an Oncotype DX recurrence score of 11-25. Estrogen can cause the growth of breast cancer cells. Hormone therapy may fight breast cancer by blocking the use of estrogen by the tumor cells or by lowering the amount of estrogen the body makes. Drugs used in chemotherapy work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving hormone therapy together with more than one chemotherapy drug (combination chemotherapy) has been shown to reduce the chance of breast cancer recurrence, but the benefit of adding chemotherapy to hormone therapy for women with node-negative, estrogen-receptor positive breast cancer is small. New tests may provide information about which patients are more likely to benefit from chemotherapy.

5-year Disease-free Survival

Assessed every 6 months within 5 years from registration and then annually up to 20 years, DFS rate estimated at 5 years · percentage of participants

Arm A94.0 percentage of participants
Arm B92.8 percentage of participants
Arm C93.1 percentage of participants
Arm D87.6 percentage of participants
p-value0.13
Hazard Ratio (HR)1.08 (95% CI 0.94–1.24)

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