NCT06849947

Fulvestrant With Ribociclib Versus Physician's Choice Treatments Recurred After Completion of Adjuvant Cyclin-Dependent Kinase 4/6 Inhibitors in HR+, HER2- Metastatic Breast Cancer

Randomized Phase II Trial of Fulvestrant With Ribociclib Versus Physician's Choice Treatments for the Patients Who Recurred After Completion of Adjuvant Cyclin-Dependent Kinase 4/6 Inhibitors in HR+, HER2- Metastatic Breast Cancer as First Line Treatment (CLEE011AKR06R)

• Status: Not Yet Recruiting
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 272 (estimated)
• Sponsor: Yeon Hee Park · Academic / Other
• Sex: All
• Age: 19 Years
• Healthy volunteers: Not accepted

Summary

▪ Fulvestrant With Ribociclib versus Physician's choice treatments for the patients who recurred after completion of Adjuvant Cyclin-Dependent Kinase 4/6 Inhibitors in HR+, HER2- Metastatic Breast Cancer as first line treatment

Detailed description

1. Treatment Arm : Ribociclib (600 mg orally once daily on days 1 to 21 in a 28 day cycle) + Fulvestrant (500mg intramuscular injection on day 1 in a 28 day cycle and day 15 of Cycle 1) ± Leuprorelin (3.75 mg subcutaneously every 28 days in premenopausal or perimenopausal women) OR, 2. Control Arm (Physician's choice treatments) 1. Fulvestrant (500mg intramuscular injection on day 1 in a 28 day cycle and day15 of Cycle 1) ± Leuprorelin (3.75 mg subcutaneously every 28 days in premenopausal or periomenopausal women) OR, 2. Exemestane (25 mg orally once daily on day 1 to 28 in a 28 day cycle) + Everolimus (10 mg orally once daily on day 1 to 28 in a 28 day cycle) ± Leuprorelin (3.75 mg subcutaneously every 28 days in premenopausal or perimenopausal women)

Conditions

• Breast Cancer Metastatic

Interventions

Type	Name	Description
DRUG	Ribociclib with fulvestrant	▪ Ribociclib group \- Ribociclib (600 mg orally once daily on days 1 to 21 in a 28 day cycle) + Fulvestrant (500mg intramuscular injection on day 1 in a 28 day cycle and day 15 of Cycle 1) ± Leuprorelin (3.75 mg subcutaneously every 28 days in premenopausal or perimenopausal women)
DRUG	Physician's choice treatments group	▪Fulvestrant or exemestane group 1. Fulvestrant (500mg intramuscular injection on day 1 in a 28 day cycle and day15 of Cycle 1) ± Leuprorelin (3.75 mg subcutaneously every 28 days in premenopausal or periomenopausal women) OR, 2. Exemestane (25 mg orally once daily on day 1 to 28 in a 28 day cycle) + Everolimus (10 mg orally once daily on day 1 to 28 in a 28 day cycle) ± Leuprorelin (3.75 mg subcutaneously every 28 days in premenopausal or perimenopausal women)

Timeline

• Start date: 2026-02-01
• Primary completion: 2031-06-30
• Completion: 2031-12-31
• First posted: 2025-02-27
• Last updated: 2025-12-24