RIGHT Choice Phase II trial is the first randomized study in patients with aggressive HR+/HER2− metastatic breast cancer (MBC), including visceral crisis, comparing a CDK4/6 inhibitor (CDK4/6i) plus endocrine therapy (ET) versus combination chemotherapy (CT)1
Kisqali plus ET demonstrated a statistically significant progression-free survival (PFS) benefit of one year compared to combination CT; data to be presented at SABCS 20221
Kisqali is a unique CDK4/6i that has consistently shown statistically significant overall survival benefit while preserving or improving quality of life across three Phase III trials in MBC, including in patients with aggressive disease1,2-13
Basel, December 6, 2022 — Novartis today announced results from the RIGHT Choice Phase II trial evaluating Kisqali® (ribociclib) plus endocrine therapy (ET) against combination chemotherapy (CT) in the first-line setting for pre- and perimenopausal patients with aggressive forms of hormone receptor-positive, human epidermal growth factor receptor-2 negative (HR+/HER2−) metastatic breast cancer (MBC), including patients with visceral crisis. CT has remained the preferred option for patients with rapidly progressing disease and visceral crisis, despite the widespread adoption of CDK4/6 inhibitors (CDK4/6i) plus ET as first-line treatment for HR+/HER2- MBC. Kisqali demonstrated a nearly one-year progression-free survival (PFS) benefit in the study, supporting the superiority of Kisqali plus ET for this hard-to-treat patient population. RIGHT Choice is the first randomized study comparing a CDK4/6i plus ET vs. combination CT in aggressive HR+/HER2− MBC; data from this open-label, multi-national trial will be presented as a late-breaker oral presentation at the 2022 San Antonio Breast Cancer Symposium (SABCS) and included in the SABCS press program.
“Younger patients with aggressive disease often show resistance to treatment, resulting in worse prognoses – so it is encouraging to see RIGHT Choice data demonstrating a significant one-year benefit for this patient population when using ribociclib plus endocrine therapy compared to combination chemotherapy. Patients on the ribociclib arm had also lower rates of adverse events, such as diarrhea and fatigue, compared to chemotherapy, which could potentially impact quality of life,” said Dr. Yen-Shen Lu, Division Chief of Medical Oncology at Department of Oncology, National Taiwan University Hospital. “With these improvements in outcomes and tolerability, oncologists should consider ribociclib plus ET as a treatment option for patients with aggressive forms of HR+/HER2− MBC, including patients with visceral crisis.”
The study enrolled 222 patients with aggressive forms of HR+/HER2− MBC (i.e., with symptomatic visceral metastases, rapid disease progression or markedly symptomatic non-visceral metastases), including more than 50% of patients with visceral crisis as determined by investigators; Kisqali plus ET doubled the median PFS vs. combination CT at 24.0 months compared to 12.3 months (HR=0.54; 95% CI: 0.36-0.79; p=.0007) in the first-line setting. Median time to treatment failure with Kisqali plus ET was 18.6 months compared to 8.5 months with combination CT (HR=0.45; 95% CI: 0.32-0.63). Furthermore, patients in the Kisqali plus ET arm of the trial reported lower rates of treatment-related serious adverse events (AEs) and lower rates of discontinuation due to treatment-related AEs, compared to patients in the combination CT trial arm. Overall, the Kisqali safety profile was consistent with previously reported data1.
“Kisqali is a unique CDK4/6 inhibitor with the most robust evidence demonstrating overall survival and quality of life benefits for a wide spectrum of patients, including those with aggressive disease,” said Jeff Legos, Executive Vice President, Global Head of Oncology and Hematology at Novartis. “RIGHT Choice adds to the breadth of data that supports Kisqali as the first-line treatment of choice for patients with MBC, including those with visceral crisis.”
About Kisqali® (ribociclib)
Kisqali is the only CDK4/6 inhibitor with proven overall survival benefit across all three pivotal Phase III advanced breast cancer trials2-13 and is recognized by the National Comprehensive Cancer Network (NCCN) guidelines as the only CDK4/6i with overall survival benefit in first-line HR+/HER2- advanced breast cancer14. Additionally, Kisqali has the highest rating of any CDK4/6i on the ESMO Magnitude of Clinical Benefit Scale, achieving a score of five out of five for first-line premenopausal patients with HR+/HER2- advanced breast cancer15. Further, Kisqali in combination with either letrozole or fulvestrant has uniquely, among other CDK4/6i, received a score of four out of five for postmenopausal patients with HR+/HER2- advanced breast cancer treated in the first line16.
Kisqali has been approved in more than 95 countries worldwide, including by the United States Food and Drug Administration (FDA) and the European Commission, for the treatment of women with HR+/HER2- advanced or metastatic breast cancer in combination either with an aromatase inhibitor or with fulvestrant as initial endocrine-based therapy or following disease progression on endocrine therapy. Kisqali in combination with fulvestrant is approved as initial endocrine-based therapy or following disease progression on endocrine therapy in men by the FDA17.
Novartis is committed to continuing to study Kisqali in breast cancer. NATALEE is a large Phase III clinical trial of Kisqali plus endocrine therapy in the adjuvant treatment of HR+/HER2- early breast cancer being conducted in collaboration with Translational Research In Oncology (TRIO)18. Additionally, Novartis is collaborating with SOLTI, who is leading HARMONIA, to test whether Kisqali changes tumor biology to enable a better response to endocrine-based therapy compared to Ibrance®* for patients with advanced HR+/HER2-, HER2-enriched subtype19, and with the Akershus University Hospital in Norway on the NEOLETRIB trial, a neoadjuvant Phase II trial studying the effects of Kisqali in HR+/HER2- early breast cancer to discover the potentially unique underlying mechanism of action20.
Kisqali was developed by the Novartis Institutes for BioMedical Research (NIBR) under a research collaboration with Astex Pharmaceuticals.
Please see full Prescribing Information for Kisqali, available at www.Kisqali.com.
About Novartis in Advanced Breast Cancer
Novartis tackles breast cancer with superior science, collaboration and a passion for transforming patient care. We've taken a bold approach to our research by including patient populations often neglected in clinical trials, identifying new pathways or mutations that may play a role in disease progression and developing therapies that not only maintain, but also improve, quality of life for patients. Our priority over the past 30 years and today is to deliver treatments proven to improve and extend lives for those diagnosed with metastatic breast cancer.
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Lu YS, Mahidin EIBM, et al. Primary results from the randomized Phase II RIGHT Choice trial of premenopausal patients with aggressive HR+/HER2− advanced breast cancer treated with ribociclib + endocrine therapy vs physician’s choice combination chemotherapy. Presented at the 2022 San Antonio Breast Cancer Symposium (SABCS). December 6-10, 2022. Abstract # GS1-10.
Yardley DA, Yap YS, et al. Pooled exploratory analysis of survival in patients (pts) with HR+/HER2- advanced breast cancer (ABC) and visceral metastases (mets) treated with ribociclib (RIB) + endocrine therapy (ET) in the MONALEESA (ML) trials. Presented at the European Society of Medical Oncology (ESMO) Congress. September 9-13, 2022. Abstract #205P.
Neven P, Fasching PA, et al. Updated overall survival (OS) results from the first-line (1L) population in the Phase III MONALEESA-3 trial of postmenopausal patients with HR+/HER2- advanced breast cancer (ABC) treated with ribociclib (RIB) + fulvestrant (FUL). Presented at the European Society for Medical Oncology (ESMO) Breast Cancer Congress. May 4, 2022. Abstract #LBA4, May 4, 2022.
Hortobagyi, et al. Overall Survival With Ribociclib Plus Letrozole in Advanced Breast Cancer. N Engl J Med 2022; 386:942-50.
Hortobagyi, et al. Overall survival (OS) results from the phase III MONALEESA (ML)-2 trial of postmenopausal patients with hormone receptor positive/human epidermal growth factor receptor 2 negative (HR+/HER2−) advanced breast cancer (ABC) treated with endocrine therapy (ET) ± ribociclib. Presented at the European Society of Medical Oncology (ESMO) Congress, September 16-21, 2021. Abstract #LBA17.
Im, SA. et al. Overall Survival with Ribociclib plus Endocrine Therapy in Breast Cancer. N Engl J Med 2019; 381:307-316.
Slamon DJ, Neven P, Chia S, Fasching PA, De Laurentiis M, Im S-A, et al. Overall survival with ribociclib plus fulvestrant in advanced breast cancer. N Engl J Med. 2020;382(6):514–24.
Slamon, DJ, et al. Overall survival (OS) results of the Phase III MONALEESA-3 trial of postmenopausal patients (pts) with hormone receptor–positive (HR+), human epidermal growth factor 2–negative (HER2−) advanced breast cancer (ABC) treated with fulvestrant (FUL) ± ribociclib (RIB). Presented at the European Society of Medical Oncology (ESMO) Congress, September 29, 2019, Barcelona, Spain. Abstract #LBA7.
Slamon D, Neven P, Chia S, et al. Updated overall survival (OS) results from the Phase III MONALEESA-3 trial of postmenopausal patients (pts) with HR+/HER2− advanced breast cancer (ABC) treated with fulvestrant (FUL) ± ribociclib (RIB. Presented at the American Society of Clinical Oncology (ASCO) Annual Meeting, June 5, 2021. Abstract #1001.
Tripathy D, Im S-A, Colleoni M, et al, Updated overall survival (OS) results from the phase III MONALEESA-7 trial of pre- or perimenopausal patients with HR+/HER2− advanced breast cancer (ABC) treated with endocrine therapy (ET) ± ribociclib. Presented at the San Antonio Breast Cancer Symposium, December 9, 2020. Abstract #PD2-04.
Yardley, Denise, A. et. al. Overall survival (OS) in patients (pts) with advanced breast cancer (ABC) with visceral metastases (mets), including those with liver mets, treated with ribociclib (RIB) plus endocrine therapy (ET) in the MONALEESA (ML) -3 and -7 trials. Presented at the American Society of Clinical Oncology (ASCO) Annual Meeting. Abstract #1054.
O’Shaughnessy J et al. Overall survival subgroup analysis by metastatic site from the Phase III MONALEESA-2 study of first-line ribociclib + letrozole in postmenopausal patients with HR+/HER2− advanced breast cancer. Presented at the San Antonio Breast Cancer Symposium, December 7-10, 2021. Abstract #GS2-01.
Novartis Data on File. Novartis Pharmaceuticals Corp: 2021.
National Comprehensive Cancer Network. NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines®) – Breast Cancer. Version 1.2022.
European Society for Medical Oncology – Magnitude of Clinical Benefit Scale Scorecard. https://www.esmo.org/guidelines/esmo-mcbs/esmo-mcbs-scorecards/scorecard-158-1. Published April 20, 2020. Updated August 21, 2020. Accessed September 9, 2020.
European Society for Medical Oncology – Magnitude of Clinical Benefit Scale Scorecard. https://www.esmo.org/guidelines/esmo-mcbs/esmo-mcbs-scorecards/scorecard-9-1. Published March 29, 2022. Accessed April 1, 2022.
Kisqali (ribociclib) Prescribing Information. East Hanover, New Jersey, USA: Novartis Pharmaceuticals Corporation.
Novartis Pharmaceuticals and Translational Research in Oncology (2018, December 7 – 2026, May 29). A Trial to Evaluate Efficacy and Safety of Ribociclib With Endocrine Therapy as Adjuvant Treatment in Patients With HR+/HER2- Early Breast Cancer (NATALEE). Identifier NCT03701334. https://clinicaltrials.gov/ct2/show/NCT03701334.
Pascual T, Stover D, et al. HARMONIA SOLTI-2101/AFT-58: A head-to-head phase III study comparing ribociclib (RIB) and Palbociclib (PAL) in patients with hormone receptor-positive/HER2-negative/HER-Enriched (HR+/HER2-/HER2-E) advanced breast cancer (ABC). Presented at the European Society of Medical Oncology (ESMO) Congress. September 9-13, 2022. Abstract #272TiP.
Novartis and Vestre Viken Hospital Trust (2022, April 1 – 2024, December 1). Neoadjuvant Treatment of Locally-advanced Breast Cancer Patients With Ribociclib and Letrozole (NEOLETRIB). Identifier NCT05163106. https://clinicaltrials.gov/ct2/show/NCT05163106.
*Ibrance® is a registered trademark of Pfizer Inc.
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