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Novartis Announces New Crizanlizumab (SEG101) Data Analysis in Sickle Cell Disease, and Investment in SENTRY Clinical Program

Basel, December 1, 2018 - New data from a post hoc analysis of the Phase II SUSTAIN study of crizanlizumab -- a once-a-month, humanized anti-P-selectin monoclonal antibody infusion being investigated for the treatment of sickle cell disease (SCD) -- shows greater reductions of vaso-occlusive crises (VOCs) in patients who were adherent to the treatment protocol. The data were presented during the 60th Annual Meeting of the American Society of Hematology (ASH) in San Diego.

Sickle cell VOCs are painful complications of the disease and the main reason why patients seek medical care in hospitals[1],[2]. These crises are triggered by multi-cell adhesion, or clusters of cells that block blood flow, and are associated with increased morbidity and mortality[3],[4]. Currently, treatment options to prevent VOCs are limited. By targeting P-selectin, crizanlizumab reduces multicellular adhesion[2],[5].

"Patients with sickle cell disease experience recurrent and severe episodes of debilitating pain that often require medical attention and emergency medical care," said Kenneth Ataga, MD, Director of the Center for Sickle Cell Disease at the University of Tennessee Health Science Center at Memphis, and Principal Investigator of the SUSTAIN analysis. "It is encouraging that these data show treatment per protocol not only reduced the frequency of painful crises, but also increased the number patients with no crises at all. These findings underscore the potential of crizanlizumab and the importance of proactive management of sickle cell disease."

In the analysis of the per protocol population of the 52-week SUSTAIN study, which compared the P-selectin inhibitor crizanlizumab with placebo in patients with sickle cell disease, crizanlizumab (5.0 mg/kg) significantly:

  • Increased the percentage of patients who did not experience any VOCs vs placebo (37.5% vs. 12.2%, p=0.008) during treatment
  • More than doubled the median time to first on-treatment VOC (6.55 vs 1.58 months, p < 0.001) and
  • Decreased the annual rate of VOCs (1.04 vs 2.18, p=0.02).

SUSTAIN is part of the SENTRY clinical trial program including seven active or planned clinical studies designed to generate an array of additional data on the role crizanlizumab plays in the management of sickle cell disease. More studies may be added as plans are finalized.

Major active trials in the SENTRY program include:

  • SOLACE-adults (A2202) Phase II study investigating the pharmacological properties and safety of crizanlizumab in patients with sickle cell disease aged 16 and above
  • SOLACE-kids (B2201) Phase II study investigating the safety and efficacy of crizanlizumab in pediatric patients with sickle cell disease
  • STAND (A2301) Phase III study investigating the efficacy and safety of crizanlizumab in sickle cell disease patients aged 12 and above
  • SUCCESSOR retrospective cohort study among adult sickle cell disease patients in the US

"The SENTRY program emphasizes our long-term commitment to reimagining sickle cell disease treatment for as many people as possible," said Samit Hirawat, MD, Head, Novartis Oncology Global Drug Development. "The outcomes of these trials, alongside our analyses of SUSTAIN, will increase our understanding of the disease and, we hope, take us a step forward in our aspiration to reduce the burden of sickle cell pain crises."

About the SUSTAIN trial

The Phase II SUSTAIN trial was a multicenter, multinational, randomized, placebo-controlled, double-blind,12-month study to assess safety and efficacy of the anti-P-selectin antibody crizanlizumab with or without concomitant use of hydroxyurea therapy in sickle cell disease patients with sickle cell-related pain crises. Primary results were published in The New England Journal of Medicine and showed that crizanlizumab reduced the median annual rate of sickle cell pain crises (SCPCs) by 45.3% compared to placebo (1.63 vs 2.98, p=0.010) in patients with or without hydroxyurea therapy[6].

Adverse events that occurred in 10% or more of the patients in either active-treatment group (2.5 mg/kg; 5 mg/kg) and at a frequency that was at least twice as high as that in the placebo group were arthralgia, diarrhea, pruritus, vomiting, and chest pain. There were no apparent increases in infections with crizanlizumab treatment[6].

About crizanlizumab (SEG101)

Crizanlizumab (SEG101) is a humanized anti-P-selectin monoclonal antibody being investigated for the prevention of vaso-occlusive crises (VOCs) in patients with sickle cell disease (SCD)[6]. Crizanlizumab binds a molecule called P-selectin on the surface of endothelial cells and platelets in the blood vessels, causing a blockade of P-selectin[6]. P-selectin is one of the major drivers of the vaso-occlusive process[6]. Results from the Phase II SUSTAIN study demonstrated that crizanlizumab reduced the median annual rate of VOCs that lead to a healthcare visit compared to placebo in patients with SCD regardless of whether or not they were taking hydroxyurea[6].

Disclaimer
This press release 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," "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 press release, 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 press release 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; our ability to obtain or maintain proprietary intellectual property protection; the particular prescribing preferences of physicians and patients; general political and economic conditions; safety, quality 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 press release as of this date and does not undertake any obligation to update any forward-looking statements contained in this press release as a result of new information, future events or otherwise.

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 1 billion people globally and we are finding innovative ways to expand access to our latest treatments. About 125 000 people of more than 140 nationalities work at Novartis around the world. Find out more at www.novartis.com.

References
[1]    Puri L, Nottage KA, Hankins JS, et al. State of the art management of acute vaso-occlusive pain in sickle cell disease. Paediatr Drugs. 2018;(1)20:29-42.
[2]    Gutsaeva D, Parkerson J, Yerigenahally S, et al. Inhibition of cell adhesion by anti-P-selectin aptamer: a new potential therapeutic agent for sickle cell disease. Blood. 2011;117(2):727-735.
[3]    Ballas SK, Gupta K, Adams-Graves P. Sickle cell pain: a critical reappraisal. Blood. 2012:120(18):3647-3656
[4]    Piel F, Steinberg M, Rees D. Sickle cell disease. N Engl J Med. 2017;376(16):1561-1573.
[5]    Ballas SK, Lusardi M. Hospital readmission for acute adult sickle cell painful episodes: frequency, etiology, and prognostic significance. Am J Hematol. 2005;79(1):17-25.
[6]    Ataga KI, Kutlar A, Kanter J et al. Crizanlizumab for the Prevention of Pain Crises in Sickle Cell Disease. N Engl J Med. 2017 Feb 2;376(5):429-439.

Source: Novartis

Posted: December 2018

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