- At primary analysis, ASCEMBL met its primary endpoint of significant superiority in major molecular response rate at 24 weeks for asciminib (ABL001) vs. bosutinib in patients previously treated with two or more tyrosine-kinase inhibitors (TKIs)1
- Despite advances in chronic myeloid leukemia (CML) care, many patients are at risk of disease progression, and sequential TKI therapy may be associated with increased resistance and intolerance2-7
- By specifically targeting the ABL myristoyl pocket, STAMP inhibition has the potential to help address resistance and intolerance in later treatment lines for CML8-14; additional studies seek to evaluate asciminib in earlier lines of therapy15
- ASCEMBL results will be submitted for presentation at an upcoming medical meeting and shared with regulatory authorities; FDA has granted asciminib Fast Track designation
BASEL, Switzerland I August 26, 2020 I Novartis announced today that, at primary analysis, the Phase III ASCEMBL study met its primary endpoint of statistically significant superiority in major molecular response (MMR) rate at 24 weeks for asciminib (ABL001) vs. bosutinib1. The study evaluates asciminib – a novel investigational treatment specifically targeting the ABL myristoyl pocket (STAMP) – in adult patients with Philadelphia chromosome-positive chronic myeloid leukemia in chronic phase (Ph+ CML-CP) previously treated with two or more tyrosine-kinase inhibitors (TKIs)1. Patients with failure or intolerance to the most recently administered TKI therapy were included in the trial1.
“Our ability to treat patients with TKIs changed CML care forever. However, the risk of disease progression is a reality for many patients – especially those who experience resistance to sequential TKI therapy or those who cannot adhere to treatment due to the daily impact of intolerable side effects16,” said John Tsai, MD, Head of Global Drug Development and Chief Medical Officer, Novartis. “We are incredibly grateful to the patients and investigators around the world who participated in this study. These results with asciminib are a testament to our commitment to further transform CML care – this time through STAMP inhibition, by exploiting a natural regulatory mechanism of the ABL kinase.”
Data from the ASCEMBL trial will be submitted for presentation at an upcoming medical meeting, and results will be shared with regulatory authorities. The U.S. Food and Drug Administration (FDA) has granted Fast Track designation for asciminib.
Findings from earlier studies of asciminib were presented during past annual meetings of the European Hematology Association, and some details can be found here13,14.
About asciminib (ABL001)
Asciminib (ABL001) is an investigational treatment specifically targeting the ABL myristoyl pocket (STAMP). As a STAMP inhibitor, asciminib may help address tyrosine-kinase inhibitor (TKI)-resistance and intolerance in later treatment lines of chronic myeloid leukemia (CML)8-14, and it is being studied in several clinical trials in hopes of helping patients across multiple treatment lines of CML7,10,11,13-15,17.
About ASCEMBL
ASCEMBL is a Phase III, multicenter, open-label, randomized study comparing the oral investigational treatment asciminib (ABL001) versus bosutinib in patients with Philadelphia chromosome-positive chronic myeloid leukemia in chronic phase (Ph+ CML-CP) previously treated with two or more tyrosine-kinase inhibitors (TKIs)1. Patients with failure or intolerance to the most recently administered TKI therapy were included in the trial1.
About Novartis Commitment to CML
Our ongoing research in Philadelphia chromosome-positive chronic myeloid leukemia (Ph+ CML) has helped transform the disease from a fatal leukemia to a chronic condition in most patients. Novartis maintains an unwavering commitment to scientific innovation and access to care for patients worldwide. As an organization committed to patients, Novartis continues to reimagine CML care by pursuing ambitious goals with courage, passion and commitment for the global CML community.
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 nearly 800 million people globally and we are finding innovative ways to expand access to our latest treatments. About 109,000 people of more than 140 nationalities work at Novartis around the world. Find out more at https://www.novartis.com.
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References
1. Novartis Data on File
2. Akard LP, et al. The “Hit Hard and Hit Early” Approach to the Treatment of Chronic Myeloid Leukemia: Implications of the Updated National Comprehensive Cancer Network Clinical Practice Guidelines for Routine Practice. Clin Adv Hematol Oncol. 2013;11(7):421-432
3. Cortes JE, et al. Long-term bosutinib for chronic phase chronic myeloid leukemia after failure of imatinib plus dasatinib and/or nilotinib. Am J Hematol. 2016;91(12):1206-1214
4. Cortes JE, et al. Ponatinib efficacy and safety in Philadelphia chromosome–positive leukemia: Final 5-year results of the phase 2 PACE trial. Blood. 2018;132(4):393-404
5. Garg RJ, et al. The use of nilotinib or dasatinib after failure to 2 prior tyrosine kinase inhibitors: long-term follow-up. Blood. 2009;114(20):4361-4368
6. Busque L, et al. Real-Life Analysis of CML Management Demonstrates that Second-Line Therapy is Frequently Used But is Prematurely Discontinued For Intolerance: Report on Behalf of the CML-MPN Quebec Research Group. Poster presented at: EHA Annual Meeting; June 13, 2015.
7. Hughes TP, et al. Asciminib in Heavily Pretreated Patients With Ph+ CML CP Sensitive to TKI Therapy. Poster presented at: EHA Annual Meeting; June 12, 2020.
8. Wylie AA, et al. The allosteric inhibitor ABL001 enables dual targeting of BCR–ABL1. Nature. 2017;543(7647):733-737
9. Schoepfer J, et al. Discovery of Asciminib (ABL001), an Allosteric Inhibitor of the Tyrosine Kinase Activity of BCR-ABL1. J Med Chem. 2018;61(18):8120-8135
10. Hughes TP, et al. Asciminib in Chronic Myeloid Leukemia after ABL Kinase Inhibitor Failure. N Engl J Med. 2019; 381(24):2315-2326
11. Hughes TP, et al. Expanded Phase 1 Study of ABL001, a Potent, Allosteric Inhibitor of BCR-ABL, Reveals Significant and Durable Responses in Patients with CML-Chronic Phase with Failure of Prior TKI Therapy Blood. Poster presented at: ASH Annual Meeting & Exposition; Dec. 5, 2016.
12. Ottmann OG, et al. ABL001, a Potent, Allosteric Inhibitor of BCR-ABL, Exhibits Safety and Promising Single- Agent Activity in a Phase I Study of Patients with CML with Failure of Prior TKI Therapy. Blood. 2015;126(23):138
13. Mauro MJ, et al. Combination of Asciminib Plus Nilotinib (NIL) or Dasatinib (DAS) in Patients (PTS) with Chronic Myeloid Leukemia (CML): Results from a Phase 1 Study. Poster presented at: EHA Annual Meeting; June 15, 2019.
14. Cortes J, et al. Combination Therapy Using Asciminib Plus Imatinib (IMA) in Patients (PTS) with Chronic Myeloid Leukemia (CML): Results from a Phase 1 Study. Poster presented at: EHA Annual Meeting; June 15, 2019.
15. Saglio G, et al. Poster presented at: 20th Annual John Goldman Conference on Chronic Myeloid Leukemia: Biology and Therapy; September 13-16, 2018; Miami, FL
16. Zaleta KZ et al. Symptom Burden, Palliative Care Needs, and Patient-Provider Communication Among Chronic Myeloid Leukemia Survivors. Blood. 2017;130(1):4704.
17. Mauro M, et al. A multicenter, randomized phase III study of asciminib (ABL001) versus bosutinib in patients (pts) with chronic myeloid leukemia in chronic phase (CML-CP) previously treated with ≥2 tyrosine kinase inhibitors (TKIs). J Clin Oncol. 2019;37(15).
SOURCE: Novartis
