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Novartis Kisqali® shows deepening benefit in new analysis, reducing the risk of recurrence by 28.5% in a broad population of patients with early breast cancer

Source: GlobeNewswire
Novartis Kisqali® shows deepening benefit in new analysis, reducing the risk of recurrence by 28.5% in a broad population of patients with early breast cancer
  • Invasive disease-free survival benefit continued to increase after completion of the three-year treatment period across all patient subgroups, including those with node-negative disease1
  • Results remain consistent across secondary endpoints, including distant disease-free survival, with a trend for improved overall survival*1
  • Safety is in line with previously reported results with generally low-grade symptomatic adverse events, reinforcing well-tolerated profile1
  • People diagnosed with stage II or III HR+/HER2- early breast cancer, including those with node-negative disease, face a significant risk of recurrence despite being treated with adjuvant endocrine therapy2,3
  • Late-breaking results to be presented at ESMO; regulatory reviews underway with FDA action expected in Q3

Basel, September 16, 2024 – In an updated analysis from the pivotal Phase III NATALEE trial, investigational Kisqali® (ribociclib) added to endocrine therapy (ET) shows a deepening benefit beyond the three-year treatment period, reducing the risk of recurrence by 28.5% (HR=0.715; 95% CI 0.609–0.840; P<0.0001), compared to ET alone, in patients with stage II and III hormone receptor-positive/human epidermal growth factor receptor 2-negative (HR+/HER2-) early breast cancer (EBC)1. This invasive disease-free survival (iDFS) benefit was also consistent across all pre-specified patient subgroups, including those with node-negative disease1. Late-breaking data from this four-year post-hoc analysis will be presented today at the European Society for Medical Oncology (ESMO) Congress 20241.

iDFS benefit across pre-specified subgroups1:

Subgroup 4-year iDFS rate, % 4-year iDFS absolute benefit, %
Intention-To-Treat Population Kisqali + ET: 88.5
ET alone: 83.6
(HR=0.715; 95% CI 0.609–0.840) 		4.9
AJCC Tumor Stage II Kisqali + ET: 93.9
ET alone: 89.6
(HR=0.644; 95% CI 0.468–0.887) 		4.3
AJCC Tumor Stage III Kisqali + ET: 84.3
ET alone: 78.4
(HR=0.737; 95% CI 0.611–0.888) 		5.9
Node-negative disease Kisqali + ET: 92.1
ET alone: 87.0
(HR=0.666; 95% CI 0.397–1.118) 		5.1

Results were also consistent across secondary efficacy endpoints, including distant disease-free survival (HR=0.715; 95% CI 0.604–0.847; P<0.0001), with a trend for improvement in overall survival (HR=0.827; 95% CI 0.636–1.074; one-sided P value=0.0766)*1.

“Clinicians are eager to address the substantial risk of cancer coming back as metastatic disease for patients diagnosed with HR+/HER2- early-stage breast cancer,” said Peter A. Fasching, M.D., Professor of Translational Medicine, University Hospital Erlangen and Comprehensive Cancer Center Erlangen-EMN and NATALEE trial investigator. “With longer follow-up, the clinically relevant benefit of adding ribociclib to endocrine therapy continues to improve, even after the end of ribociclib treatment, for both node-positive and node-negative patients. This is important because NATALEE includes a broad population of patients at risk of recurrence, including those diagnosed with high-risk, node-negative disease who deserve access to new treatment options to reduce that risk.” 

Safety remains consistent with previously reported results with no new safety signals identified1. Adverse events (AEs) of special interest (grade 3 or higher) were neutropenia (44.4%), liver-related AEs (e.g., elevated transaminases) (8.6%), and QT interval prolongation (1.0%)1.

“As we anticipate regulatory action from health authorities worldwide, we are highly encouraged by these longer-term results from NATALEE showing a deepening efficacy benefit for Kisqali,” said Shreeram Aradhye, M.D., President, Development and Chief Medical Officer, Novartis. “A large number of people diagnosed with HR+/HER2- early breast cancer remain at risk of recurrence, and these results add to the growing body of evidence supporting the potential of Kisqali to reduce this risk consistently across a broad population, including patients with node-negative disease who have few options beyond ET.”

Novartis submitted NATALEE data to the U.S. Food and Drug Administration (FDA) and European Medicines Agency (EMA) in 2023, and FDA regulatory action is expected in Q3.

*Results based on overall survival analysis at time of 4-year post-hoc analysis; additional follow-up is planned to obtain more mature OS data.

About NATALEE
NATALEE is a global Phase III multi-center, randomized, open-label trial to evaluate the efficacy and safety of Kisqali® (ribociclib) with ET as an investigational adjuvant treatment versus ET alone in patients with stage II and III HR+/HER2- EBC, being conducted in collaboration with TRIO4,5. The adjuvant ET in both treatment arms was a non-steroidal aromatase inhibitor (NSAI; anastrozole or letrozole) and goserelin if applicable4,5. The primary endpoint of NATALEE is invasive disease-free survival (iDFS) as defined by the Standardized Definitions for Efficacy End Points (STEEP) criteria4,5. A total of 5,101 adult patients with HR+/HER2- EBC across 20 countries were randomized in the trial4,5.

About Kisqali® (ribociclib)
Kisqali® (ribociclib) is a selective cyclin-dependent kinase inhibitor, a class of drugs that help slow the progression of cancer by inhibiting two proteins called cyclin-dependent kinase 4 and 6 (CDK4/6). These proteins, when over-activated, can enable cancer cells to grow and divide too quickly. Targeting CDK4/6 with enhanced precision may play a role in ensuring that cancer cells do not continue to replicate uncontrollably.

Regulatory reviews for Kisqali as an EBC treatment are ongoing worldwide, including in the U.S., EU and China.

Kisqali has been approved as a treatment for metastatic breast cancer (MBC) patients in 99 countries worldwide, including by the U.S. FDA and the European Commission6,7. In the U.S., Kisqali is indicated for the treatment of adults with HR+/HER2- advanced or MBC in combination with an AI as initial ET or fulvestrant as initial ET or following disease progression on ET in post-menopausal women or in men6. In the EU, Kisqali is approved for the treatment of women with HR+/HER2- advanced or MBC in combination with either an AI or fulvestrant as initial ET or following disease progression7. In pre- or peri-menopausal women, the ET should be combined with a luteinizing hormone-releasing hormone agonist6,7.

In MBC, Kisqali has consistently demonstrated statistically significant overall survival benefit across three Phase III trials8-18. The NCCN Guidelines® for breast cancer recommend ribociclib (Kisqali) as the only Category 1 preferred CDK4/6 inhibitor for first-line treatment of people living with HR+/HER2- when combined with an AI, making Kisqali the preferred first-line treatment of choice for US prescribers in HR+/HER2- MBC19. Additionally, Kisqali has the highest rating of any CDK4/6 inhibitor on the ESMO Magnitude of Clinical Benefit Scale, achieving a score of five out of five for first-line pre-menopausal patients with HR+/HER2- advanced breast cancer20. Further, Kisqali in combination with either letrozole or fulvestrant has uniquely, among other CDK4/6 inhibitors, received a score of four out of five for post-menopausal patients with HR+/HER2- advanced breast cancer treated in the first line21.

Kisqali was developed by Novartis under a research collaboration with Astex Pharmaceuticals.

Please see full Prescribing Information for Kisqali, available at www.Kisqali.com

About Novartis in Breast Cancer
For more than 30 years, Novartis has been at the forefront of driving scientific advancements for people touched by breast cancer and improving clinical practice in collaboration with the global community. With one of the most comprehensive breast cancer portfolios and pipeline, Novartis leads the industry in discovery of new therapies and combinations in HR+/HER2- breast cancer, the most common form of the disease.

Disclaimer
This media update contains forward-looking statements within the meaning of the United States Private Securities Litigation Reform Act of 1995. Forward-looking statements can generally be identified by words such as “potential,” “can,” “will,” “plan,” “may,” “could,” “would,” “expect,” “anticipate,” “look forward,” “believe,” “committed,” “investigational,” “pipeline,” “launch,” or similar terms, or by express or implied discussions regarding potential marketing approvals, new indications or labeling for the investigational or approved products described in this media update, or regarding potential future revenues from such products. You should not place undue reliance on these statements. Such forward-looking statements are based on our current beliefs and expectations regarding future events, and are subject to significant known and unknown risks and uncertainties. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those set forth in the forward-looking statements. There can be no guarantee that the investigational or approved products described in this media update will be submitted or approved for sale or for any additional indications or labeling in any market, or at any particular time. Nor can there be any guarantee that such products will be commercially successful in the future. In particular, our expectations regarding such products could be affected by, among other things, the uncertainties inherent in research and development, including clinical trial results and additional analysis of existing clinical data; regulatory actions or delays or government regulation generally; global trends toward health care cost containment, including government, payor and general public pricing and reimbursement pressures and requirements for increased pricing transparency; our ability to obtain or maintain proprietary intellectual property protection; the particular prescribing preferences of physicians and patients; general political, economic and business conditions, including the effects of and efforts to mitigate pandemic diseases; safety, quality, data integrity or manufacturing issues; potential or actual data security and data privacy breaches, or disruptions of our information technology systems, and other risks and factors referred to in Novartis AG’s current Form 20-F on file with the US Securities and Exchange Commission. Novartis is providing the information in this media update as of this date and does not undertake any obligation to update any forward-looking statements contained in this media update as a result of new information, future events or otherwise.

About Novartis
Novartis is an innovative medicines company. Every day, we work to reimagine medicine to improve and extend people’s lives so that patients, healthcare professionals and societies are empowered in the face of serious disease. Our medicines reach more than 250 million people worldwide.

Reimagine medicine with us: Visit us at https://www.novartis.com and connect with us on LinkedIn, Facebook, X/Twitter and Instagram.

References

  1. Fasching PA. Adjuvant Ribociclib (RIB) Plus Nonsteroidal Aromatase Inhibitor (NSAI) in Patients (Pts) With HR+/HER2− Early Breast Cancer (EBC): 4-Year Outcomes From the NATALEE Trial. LBA13. Proffered Paper presented at the European Society for Medical Oncology Congress, September 16, 2024. Barcelona, Spain.
  2. Pan H, Gray R, Braybrooke J, et al. 20-Year Risks of Breast-Cancer Recurrence after Stopping Endocrine Therapy at 5 Years. N Engl J Med. 2017;377(19):1836-1846.
  3. Yardley D et al. Baseline (BL) characteristics and efficacy endpoints for patients (pts) with node-negative (N0) HR+/HER2− early breast cancer (EBC) in NATALEE. Presented at the American Society of Clinical Oncology Annual Meeting, May 31, 2024. Chicago, USA.
  4. Slamon D, Lipatov O, Nowecki Z, et al. Ribociclib plus Endocrine Therapy in Early Breast Cancer. N Engl J Med. 2024;390(12):1080-1091. doi:10.1056/NEJMoa2305488
  5. Clinicaltrials.gov. NCT03701334. A Trial to Evaluate Efficacy and Safety of Ribociclib With Endocrine Therapy as Adjuvant Treatment in Patients With HR+/ HER2- Early Breast Cancer (NATALEE). Available from: https://clinicaltrials.gov/study/NCT03701334. Accessed August 2024.
  6. Kisqali. Prescribing Information (US FDA). Novartis Pharmaceuticals Corporation; 2017. Accessed July 2024. https://www.novartis.com/us-en/sites/novartis_us/files/kisqali.pdf 
  7. Kisqali. Summary of product characteristics (SmPC). Novartis Europharm Limited; 2017. Accessed August 2024. https://www.ema.europa.eu/en/documents/product-information/kisqali-epar-product-information_en.pdf 
  8. Yardley DA 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. Poster presented at the European Society of Medical Oncology Congress. September 9-13, 2022. Paris, France.
  9. Neven P 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). Mini oral presented at the European Society for Medical Oncology Breast Cancer Congress. May 4, 2022. Paris, France.
  10. Hortobagyi GN, Stemmer SM, Burris HA, et al. Overall Survival with Ribociclib plus Letrozole in Advanced Breast Cancer. N Engl J Med. 2022;386(10):942-950. doi:10.1056/NEJMoa2114663
  11. Hortobagyi GN 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. LBA 17. Proffered paper presented at the European Society of Medical Oncology Congress, September 16-21, 2021. Lugano, Switzerland.
  12. Im SA, Lu YS, Bardia A, et al. Overall survival with ribociclib plus endocrine therapy in breast cancer. N Engl J Med. 2019;381(4):307-316. doi:10.1056/NEJMoa1903765
  13. Slamon DJ, Neven P, Chia S, et al. Overall Survival with Ribociclib plus Fulvestrant in Advanced Breast Cancer. N Engl J Med. 2020;382(6):514-524. doi:10.1056/NEJMoa1911149
  14. 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). LBA7_PR. Presented at the European Society of Medical Oncology Congress, September 29, 2019. Barcelona, Spain.
  15. Slamon DJ 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 Annual Meeting, June 5, 2021. Chicago, USA.
  16. Tripathy D 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. Texas, USA.
  17. Yardley D 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 Annual Meeting, June 2020. Chicago, USA.
  18. 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. Texas, USA.
  19. NCCN Guidelines. NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines®) - Breast Cancer. Accessed July 2024.
  20. European Society for Medical Oncology. Magnitude of Clinical Benefit Scale Scorecard. Accessed July 2024. https://www.esmo.org/guidelines/esmo-mcbs/esmo-mcbs-scorecards/scorecard-158-1 
  21. European Society for Medical Oncology. Magnitude of Clinical Benefit Scale Scorecard. Accessed July 2024. https://www.esmo.org/guidelines/esmo-mcbs/esmo-mcbs-scorecards/scorecard-9-1 

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