Breast Cancer Clinical Trial
Official title:
A Phase II, Multicenter, Randomized, Open-label Study to Evaluate the Safety and Efficacy of 400 mg of Ribociclib in Combination With Non-steroidal Aromatase Inhibitors for the Treatment of Pre- and Postmenopausal Women With Hormone Receptor-positive, HER2-negative Advanced Breast Cancer Who Received no Prior Therapy for Advanced Disease
QT interval prolongation and neutropenia are considered to be important identified risks for ribociclib. The approved dosing regimen of ribociclib is 600 mg daily (QD) on a 3 weeks on/1 week off schedule. The purpose of the study is to explore whether a reduced dosing regimen of 400 mg ribociclib orally QD 3 weeks on/1 week off may decrease the risk of QTc prolongation without compromising the efficacy of ribociclib in combination with a non-steroidal aromatase inhibitor (NSAI) in pre- and postmenopausal women with hormone receptor-positive (HR-positive), HER2-negative advanced breast cancer (aBC) who have not received prior therapy for advanced disease.
This is a phase II, multicenter, randomized, open-label study to evaluate the safety and efficacy of a reduced ribociclib dose of 400 mg in combination with an NSAI (letrozole or anastrozole) for the treatment of pre- and postmenopausal women with HR-positive, HER2-negative aBC who have received no prior therapy for advanced disease. Patients will be randomly assigned to one of the below treatment arms in a 1:1 ratio: - Experimental arm - Ribociclib 400 mg QD 3 weeks on/1 week off + NSAI (+ goserelin in premenopausal women) - Control arm - Ribociclib 600 mg QD 3 weeks on/1 week off + NSAI (+ goserelin in premenopausal women). Participants will receive study treatment until disease progression (radiologically documented according to RECIST 1.1 criteria), unacceptable toxicity, death, or discontinuation from the study treatment for any other reason. Continuation of study treatment beyond initial disease progression (RECIST 1.1) will not be allowed. For participants who discontinue treatment for reasons other than documented disease progression, death, lost to follow-up, or withdrawal of consent, tumor assessments must continue to be performed until disease progression, death, lost to follow-up, or withdrawal of consent (post-treatment efficacy follow-up). ;
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