A randomized trial (MA.17R) of extending adjuvant letrozole for 5 years after completing an initial 5 years of aromatase inhibitor therapy alone or preceded by tamoxifen in postmenopausal women with early-stage breast cancer.
Goss P, Ingle J, Pritchard K, Robert N, Muss H, Gralow J, Gelmon K, Whelan T, Strasser-Weippl K, Rubin S, Sturtz K, Wolff A, Winer E, Hudis C, Stopeck A, Beck J, Kaur J, Whelan K, Tu D, Parulekar W. A randomized trial (MA.17R) of extending adjuvant letrozole for 5 years after completing an initial 5 years of aromatase inhibitor therapy alone or preceded by tamoxifen in postmenopausal women with early-stage breast cancer. Journal Of Clinical Oncology 2016, 34: lba1-lba1. DOI: 10.1200/jco.2016.34.18_suppl.lba1.Peer-Reviewed Original ResearchEarly-stage breast cancerYears of tamoxifenAromatase inhibitor therapyDisease-free survivalBreast cancerAI treatmentPostmenopausal womenInhibitor therapyHormone receptor-positive early breast cancerReceptor-positive early breast cancerTwo-sided log-rank testDisease-free survival eventsPositive early breast cancerPrior adjuvant chemotherapyPlacebo-controlled trialYear overall survivalContralateral breast cancerEarly breast cancerAnnual incidence rateStage breast cancerLog-rank testStandard of careBreast cancer recurrenceAdjuvant chemotherapyAdjuvant letrozoleExtending Aromatase-Inhibitor Adjuvant Therapy to 10 Years
Goss PE, Ingle JN, Pritchard KI, Robert NJ, Muss H, Gralow J, Gelmon K, Whelan T, Strasser-Weippl K, Rubin S, Sturtz K, Wolff AC, Winer E, Hudis C, Stopeck A, Beck JT, Kaur JS, Whelan K, Tu D, Parulekar WR. Extending Aromatase-Inhibitor Adjuvant Therapy to 10 Years. New England Journal Of Medicine 2016, 375: 209-219. PMID: 27264120, PMCID: PMC5024713, DOI: 10.1056/nejmoa1604700.Peer-Reviewed Original ResearchConceptsContralateral breast cancerDisease-free survivalAromatase inhibitorsBreast cancerOverall survivalDisease-free survival ratesPositive early breast cancerAdjuvant aromatase inhibitorsNew-onset osteoporosisPlacebo-controlled trialPrimary end pointEarly breast cancerAnnual incidence rateTreatment of choiceBreast cancer recurrenceExtension of treatmentQuality of lifeBone painLetrozole groupAdjuvant therapyPlacebo groupPostmenopausal womenDisease recurrenceIncidence rateLower incidence