Real-world Evaluation of Patient Outcomes and Experiences With Ribociclib Early Adopters.
REPOWER
1 other identifier
observational
3,000
1 country
1
Brief Summary
This non-interventional study (NIS) aims to evaluate effectiveness, persistence, treatment patterns, adverse events (AEs), and patient-reported experience (including adherence, treatment satisfaction, health-related quality of life \[HRQoL\], work productivity, and etc.), among HR+/HER2- stage II and III eBC patients treated with ribociclib + ET, and to evaluate AEs and patients-reported experience among HR+/HER2- stage II and III eBC patients treated with abemaciclib + ET, as per local label.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started Dec 2025
Longer than P75 for all trials
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
November 13, 2025
CompletedFirst Posted
Study publicly available on registry
November 21, 2025
CompletedStudy Start
First participant enrolled
December 15, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
May 30, 2030
ExpectedStudy Completion
Last participant's last visit for all outcomes
May 30, 2030
April 15, 2026
April 1, 2026
4.5 years
November 13, 2025
April 10, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (2)
Invasive disease-free survival (iDFS)
iDFS is defined as time to first invasive breast cancer recurrence (ipsilateral, contralateral, local/regional, distant), new primary invasive cancer, or death from breast cancer, non-breast cancer or unknown cause.
36 months
Distant disease-free survival (DDFS)
Distant disease-free survival (DDFS) is defined as time to first distant recurrence, second primary invasive cancer, or death from breast cancer, non-breast cancer or unknown cause. This will be assessed based on STEEP criteria version 2.0 (Standardized Definitions for Efficacy End Points in Adjuvant Breast Cancer Trials) and collected retrospectively from patient chart.
36 months
Secondary Outcomes (18)
Adherence to ribociclib + ET assessed using the MARS-5 tool
Up to approximately 36 months
Adherence to ribociclib + ET assessed using bespoke questions.
Up to approximately 36 months
Treatment satisfaction with ribociclib + ET assessed using bespoke questions.
Up to approximately 36 months
Changes in Health Related Quality of Life (HRQoL) with ribociclib + ET assessed using EORTC QLQ-C30.
Up to approximately 36 months
Changes in Health Related Quality of Life (HRQoL) with ribociclib + ET assessed using EORTC QLQ-BR42.
Up to approximately 36 months
- +13 more secondary outcomes
Study Arms (2)
Ribociclib arm
Patient treated with ribociclib and Endocrine Therapy (ET) per standard of care
Abemaciclib arm
Patient treated with abemaciclib and Endocrine Therapy (ET) per standard of care
Eligibility Criteria
Patients with early breast cancer stage II or III, ER+ or PR+ (or both) and HER2-, treated per standard of care with ribociclib plus Endocrine Therapy (N=2650) or abemaciclib plus Endocrine Therapy (N=250).
You may qualify if:
- Males or females.
- Diagnosed with breast cancer, as defined by the International Classification of Diseases (ICD), 9th or 10th Revision, Clinical Modification (ICD-9-CM 174.xx, 175.xx/ICD-10-CMC50.xx).
- Aged ≥18 years (or local legal age of consent) at the date of initial breast cancer diagnosis.
- Patients with anatomic staging II and III as determined using American Joint Committee on Cancer (AJCC) Criteria.
- Have initiated adjuvant therapy with ribociclib or abemaciclib, per the approved local label, in combination with ET (within 14 days prior to enrollment).
- Have HR+ status, as determined by the closest biomarker test on or before the adjuvant therapy initiation date:
- Tested positive for estrogen receptor (ER+), or
- Tested positive for progesterone receptor (PR+), or
- Tested positive for both.
- Tested negative for HER2 (HER2-) using the closest biomarker test on or before the adjuvant therapy initiation date.
You may not qualify if:
- Patients with local or distant breast cancer recurrence before the ribociclib/abemaciclib initiation date.
- Patients enrolled in clinical trials (receiving treatment with clinical study drugs in any setting, i.e., neoadjuvant, adjuvant, local/regional, metastatic) during the 12-month baseline period.
- Patients physically/mentally incapable of understanding the study requirements or fulfilling data collection instruments and require the support of a legally authorized representative.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Novartis Investigative Site
London, SW3 6JJ, United Kingdom
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- STUDY DIRECTOR
Novartis Pharmaceuticals
Novartis Pharmaceuticals
Central Study Contacts
Novartis Pharmaceuticals
CONTACT
Study Design
- Study Type
- observational
- Observational Model
- OTHER
- Time Perspective
- OTHER
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
November 13, 2025
First Posted
November 21, 2025
Study Start
December 15, 2025
Primary Completion (Estimated)
May 30, 2030
Study Completion (Estimated)
May 30, 2030
Last Updated
April 15, 2026
Record last verified: 2026-04
Data Sharing
- IPD Sharing
- Will not share