Long-term, relapse-free survival data for high-risk, stage III melanoma patients treated with Tafinlar® + Mekinist® following surgery presented at ASCO20 Français

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Novartis Pharmaceuticals Canada Inc.

Jun 16, 2020, 09:30 ET

  • More than half of patients with BRAF-mutated advanced melanoma treated with Tafinlar + Mekinist were alive and free of a relapse at five years1

  • Study conclusions drawn from the five-year follow-up of a dataset of 870 patients with BRAF-mutated melanoma treated with targeted therapy following the surgical removal of their cancer1,2

DORVAL, QC, June 16, 2020 /CNW Telbec/ - Novartis has announced updated results from the landmark COMBI-AD clinical trial, demonstrating that treatment with Tafinlar® (dabrafenib) and Mekinist® (trametinib) following the surgical removal of melanoma offers a long-term and durable relapse-free survival (RFS) benefit to high-risk patients diagnosed with stage III, BRAF-mutation positive melanoma1. These findings from the longest follow-up, at 60 months, and largest dataset to date of patients with Stage III melanoma receiving targeted therapy for adjuvant treatment, were presented at the ASCO20 Virtual Scientific Program (Abstract #10001)1.

The COMBI-AD study results are drawn from a prospective analysis of 870 patients with BRAF V600-mutated melanoma treated with Tafinlar + Mekinist following surgery1. Researchers reported that more than half (52%;95% CI, 48%-58%) of patients treated with adjuvant Tafinlar + Mekinist were alive and relapse-free at five years1. Among patients in the study's placebo arm 36% (95% CI, 32%-41%) were alive and relapse-free at the time of this analysis, generally consistent with typical melanoma relapse-free survival rates seen among patients with resected stage III disease without treatment1,3-5.

"These results are highly encouraging for stage III melanoma patients. We have evidence that shows treatment with Tafinlar + Mekinist after surgical resection gives melanoma patients the chance for long-term relapse-free survival," said Dr. Elaine McWhirter, Staff Medical Oncologist at the Juravinski Cancer Centre (JCC) in Hamilton and Associate Professor at McMaster University. "The COMBI-AD findings are important for patients and physicians because they give us a window into managing resected BRAF+ melanoma patients, especially as our priority is to prevent the cancer from reaching vital organs."

This study represents the largest collection of data and longest follow-up to date in this patient population treated with targeted therapy2.

"The reason this data is so important is because melanoma patients are still at risk even after surgery. The COMBI-AD data shows a 49% risk reduction in melanoma relapse or death," said Daniel Hébert Country Medical Head, Oncology, Novartis Pharmaceuticals Canada Inc. "When it comes to ongoing research, our goal at Novartis is to continue to reimagine cancer to bring new approaches and treatment options to patients and physicians to help improve and extend people's lives in different disease areas, including melanoma." 

Researchers additionally reported the five-year COMBI-AD analysis showed:

  • Median RFS, or the length of time when 50% of patients are still alive and relapse-free, was not yet reached at the five -year data cut-off for patients on Tafinlar + Mekinist treatment, suggesting long-term benefit of targeted therapy in the adjuvant (post-surgical) setting (NR; 95% CI, 47.9 mo-NR)1.
  • Median RFS was 16.6 months for patients taking a placebo (95% CI, 12.7-22.1 mo)1.
  • Treatment with Tafinlar + Mekinist reduced the risk of relapse or death by 49% compared to placebo (hazard ratio [HR] 0.51; 95% CI 0.42, 0.61)1.

"Research in the adjuvant setting is vital, particularly as cases of melanoma continue to climb in Canada," said Falyn Katz, Executive Director, Melanoma Network of Canada. "A chance at improving long-term survival following surgery is what patients and their loved ones need and truly hope for. The data that we are seeing from ASCO is tremendous!"

About the COMBI-AD Study1,2,6,7
COMBI-AD is a pivotaI Phase III study evaluating Tafinlar (dabrafenib) + Mekinist (trametinib) among patients with stage III, BRAF V600E/K-mutant melanoma without prior anticancer therapy.

It is a two-arm, randomized, double-blind Phase III study of dabrafenib in combination with trametinib versus two placebos in the adjuvant treatment of melanoma after surgical resection. Patients with completely resected, histologically confirmed, BRAF V600E/K mutation-positive, high-risk [stage IIIa (lymph node metastasis >1 mm), IIIb or IIIc] cutaneous melanoma were screened for eligibility. Subjects were randomized to receive either dabrafenib (150 mg twice daily) and trametinib (2 mg once daily) combination therapy or two placebos for up to one year. The primary end point is recurrence-free survival, and secondary endpoints include overall survival, distant metastasis-free survival, freedom from relapse analysis and safety. 

The combination of Tafinlar + Mekinist is approved in Canada to treat patients with unresectable or metastatic melanoma who have a BRAF V600 mutation and for the adjuvant treatment of patients with BRAF V600 mutation melanoma and involvement of lymph nodes, following complete surgical removal of the tumours8. 

Tafinlar® (dabrafenib) + Mekinist® (trametinib) Important Safety Information
The full prescribing information for Tafinlar® and Mekinist® can be found at: www.novartis.ca.

About Novartis Pharmaceuticals Canada
Novartis Pharmaceuticals Canada Inc., a leader in the healthcare field, is committed to the discovery, development and marketing of innovative products to improve the well-being of all Canadians. In 2019, the company invested $51.8 million in research and development in Canada. Located in Dorval, Quebec, Novartis Pharmaceuticals Canada Inc. employs approximately 1,000 people in Canada and is an affiliate of Novartis AG, which provides innovative healthcare solutions that address the evolving needs of patients and societies. For further information, please consult www.novartis.ca.   

About Novartis
Novartis is reimagining medicine to improve and extend people's lives. As a leading global medicines company, we use innovative science and digital technologies to create transformative treatments in areas of great medical need. In our quest to find new medicines, we consistently rank among the world's top companies investing in research and development. Novartis products reach more than 750 million people globally and we are finding innovative ways to expand access to our latest treatments. About 109,000 people of more than 145 nationalities work at Novartis around the world. Find out more at www.novartis.com.

References

  1. Hauschild A, et al. Long-term benefit of adjuvant dabrafenib + trametinib (D+T) in patients (pts) with resected stage III BRAF V600–mutant melanoma: 5-year analysis of COMBI-AD. Abstract #10001. 2020 American Society of Clinical Oncology Annual Meeting, May 29-June 2, Chicago, IL.
  2. Maio M, et al. Adjuvant vemurafenib in resected, BRAFV600 mutation-positive melanoma (BRIM8): a randomised, double-blind, placebo-controlled, multicentre, phase 3 trial. Lancet Oncol. 2018;19(4):510-520.
  3. Eggermont A, et al. Long-term results of the randomized phase III trial EORTC 18991 of adjuvant therapy with pegylated interferon alfa-2b versus observation in resected stage III melanoma. J Clin Oncol. 2012;30(31):3810–3818.
  4. Garbe C, et al. Adjuvant low-dose interferon {α}2a with or without dacarbazine compared with surgery alone: a prospective-randomized phase III DeCOG trial in melanoma patients with regional lymph node metastasis. Ann Oncol. 2008;19(6):1195–1201.
  5. Ascierto PA, Borgognoni L, Botti G et al. New paradigm for stage III melanoma: from surgery to adjuvant treatment. J Transl Med. 2019; 17:266. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6693227/.
  6. Balch C, et.al. Final version of 2009 AJCC melanoma staging and classification. Journal of Clinical Oncology. 2009; vol. 27, no. 36, pp. 6199–6206.
  7. ClinicalTrials.gov. Dabrafenib With Trametinib in the Adjuvant Treatment of High-risk BRAF V600 Mutation-positive Melanoma (COMBI-AD). (COMBI-AD), Available at: https://clinicaltrials.gov/ct2/show/NCT01682083?term=COMBI-AD&draw=2&rank=1. Accessed April 23, 2020.
  8. Novartis Pharmaceuticals Canada Inc., Tafinlar® and Mekinist® Product Monographs. December, 2019 & December 6, 2019.

SOURCE Novartis Pharmaceuticals Canada Inc.

Novartis Media Relations, Daphne Weatherby, Novartis Corporate Communications, +1 514 633 7873, E-mail: [email protected]

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