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Novartis Announces FDA Filing Acceptance and Priority Review of Brolucizumab (RTH258) for Patients with Wet AMD

Novartis Announces FDA Filing Acceptance and Priority Review of Brolucizumab (RTH258) for Patients with Wet AMD

brolucizumab

Treatment for Macular Degeneration

Novartis Announces FDA Filing Acceptance and Priority Review of Brolucizumab (RTH258) for Patients with Wet AMD

Basel, April 15, 2019 – Novartis announced that the US Food and Drug Administration (FDA) accepted the company’s Biologics License Application (BLA) for brolucizumab (RTH258) for the treatment of wet age-related macular degeneration (AMD), also known as neovascular AMD, or nAMD. Seeking to make brolucizumab available as quickly as possible, Novartis used a priority review voucher to expedite FDA review. If approved by the FDA, Novartis anticipates launching brolucizumab by the end of 2019.

Estimates suggest that by 2020, 1.5 to 1.75 million people in the US will be living with wet AMD, a leading cause of blindness worldwide and a rapidly growing public health concern[1]. As the disease progresses, patients may experience loss of central vision, resulting in an inability to complete daily tasks. Without treatment, vision can rapidly deteriorate and may lead to blindness[2].

“Reaching this milestone is an important step in our efforts to reimagine the treatment journey for people with wet AMD and their caregivers,” said Fabrice Chouraqui, President, Novartis Pharmaceuticals Corporation. “We are looking forward to the potential of a new option for patients with wet AMD, who often have to navigate considerable physical and emotional difficulties caused by deteriorating vision.”

The regulatory application is primarily based on Phase III data from the HAWK and HARRIER trials – prospective, randomized, double-masked multi-center studies[3],[4]. The primary endpoint of these studies was non-inferiority to aflibercept in mean change in best-corrected visual acuity (BCVA) from baseline to week 48 (mean change in BCVA of 6.6 letters for brolucizumab 6 mg versus 6.8 letters for aflibercept in HAWK and 6.9 letters versus 7.6 letters, respectively, in HARRIER). HAWK and HARRIER are the first and only global head-to-head trials in patients with wet AMD that prospectively demonstrated efficacy at week 48 starting with a 12-week dosing regimen.

Additionally, at week 48 in the studies, key secondary endpoint assessments showed significantly fewer brolucizumab patients with disease activity (23.5% of brolucizumab 6 mg patients versus 33.5% of aflibercept patients in HAWK, and 21.9% versus 31.4%, respectively, in HARRIER (P=0.0022 for both) as well as retinal fluid – key markers used by physicians to help guide management of the disease in clinical practice (31% fewer patients on brolucizumab 6 mg had intra-retinal fluid (IRF) and/or sub-retinal fluid (SRF) in HAWK, and 26% fewer in HARRIER, versus aflibercept (P<0.0001 for both)[5],[6].

“Wet AMD robs people of their precious sight and takes a major toll on the lives of millions of people who face not only vision loss, but also the burden of frequent injections into their eyes,” said Dawn Prall George, executive director, The Support Sight Foundation. “We are always excited about potential new treatment options and hopeful they may help people manage this devastating disease.”

About Brolucizumab (RTH258)

Brolucizumab (RTH258) is a humanized single-chain antibody fragment (scFv) and the most clinically advanced, humanized single-chain antibody fragment to reach this stage of development. Single-chain antibody fragments are highly sought after in drug development due to their small size, enhanced tissue penetration, rapid clearance from systemic circulation and drug delivery characteristics[7-9].

The proprietary innovative structure results in a small molecule (26 kDa) with potent inhibition of, and high affinity to, all VEGF-A isoforms[7],[10]. In preclinical studies, brolucizumab inhibited activation of VEGF receptors through prevention of the ligand-receptor interaction[7],[9],[10]. Increased signaling through the VEGF pathway is associated with pathologic ocular angiogenesis and retinal edema[11]. Inhibition of the VEGF pathway has been shown to inhibit the growth of neovascular lesions, resolve retinal edema and improve vision in patients with chorioretinal vascular diseases[12].

About HAWK and HARRIER Study Design

With more than 1,800 patients across nearly 400 sites worldwide, HAWK (NCT02307682) and HARRIER (NCT02434328) are the first and only global head-to-head trials in patients with nAMD that prospectively demonstrated efficacy at week 48 using an innovative q12w/q8w regimen, with a majority of patients on q12w immediately following the loading phase[3-5]. Both studies are 96-week prospective, randomized, double-masked multi-center studies and part of the Phase III clinical development of brolucizumab[3],[4],[6].

The studies were designed to compare the efficacy and safety of intravitreal injections of brolucizumab 6 mg (HAWK and HARRIER) and 3 mg (HAWK only) versus aflibercept 2 mg in patients with nAMD[3],[4]. In both trials, patients were randomized to either brolucizumab or aflibercept[3],[4]. Immediately following the 3-month loading phase, patients in the brolucizumab arms received a q12w dosing interval with an option to adjust to a q8w dosing interval based on masked disease activity assessments at defined visits[3],[4]. Aflibercept was dosed bi-monthly according to its label at the time of study initiation[3-6].

Brolucizumab met the primary efficacy objective of non-inferiority versus aflibercept in mean change in best-corrected visual acuity (BCVA) from baseline to week 48 with high statistical significance[5]. Additionally, brolucizumab demonstrated superiority in three secondary endpoints considered key parameters of nAMD: central subfield retinal thickness, retinal fluid (intraretinal fluid and/or subretinal fluid) and disease activity[5].

At year two, the most frequent ocular adverse events (=>5% of patients in any treatment arm) for brolucizumab 3 mg, 6 mg and aflibercept, respectively, in HAWK were conjunctival hemorrhage (10.9%, 8.1% and 8.9%), reduced visual acuity (9.5%, 6.1% and 8.1%), vitreous floaters (7.3%, 6.1% and 4.4%), eye pain (7.8%, 5.0% and 5.8%), retinal hemorrhage (3.9%, 5.8% and 5.6%), cataract (5.0%, 5.6% and 3.6%), vitreous detachment (6.7%, 5.3% and 5.3%) and dry eye (5.6%, 5.3% and 7.2%)[5]. The incidences of these events for brolucizumab 6 mg and aflibercept, respectively, in HARRIER were conjunctival hemorrhage (4.6% and 5.1%), reduced visual acuity (8.6% and 7.0%), vitreous floaters (4.1% and 1.4%), eye pain (3.5% and 5.1%), retinal hemorrhage (3.2% and 1.1%), cataract (3.0% and 11.7%), vitreous detachment (2.7% and 2.2%) and dry eye (2.7% and 3.0%)[6].

About Neovascular Age-Related Macular Degeneration (nAMD or wet AMD)

nAMD is the leading cause of severe vision loss and legal blindness in people over the age of 65 in North America, Europe, Australia and Asia, impacting an estimated 20 to 25 million people worldwide[2],[13]. nAMD occurs when abnormal blood vessels form underneath the macula, the area of the retina responsible for sharp, central vision. These blood vessels are fragile and leak fluid, disrupting the normal retinal architecture and ultimately causing damage to the macula[1],[14],[15].

Early symptoms of nAMD include distorted vision or metamorphopsia and difficulties seeing objects clearly[16]. Prompt diagnosis and intervention are essential. As the disease progresses, cell damage increases, further reducing vision quality. This progression can lead to a complete loss of central vision, leaving the patient unable to read, drive or recognize familiar faces[14]. Without treatment, vision can rapidly deteriorate[2].

About Novartis in Ophthalmology

Novartis Ophthalmology is reimagining the treatment and prevention of visual impairment and blindness. By pushing the boundaries of medicine and technology we’re developing life-changing gene therapies, next-generation pharmaceuticals, and transformative technologies for diseases and conditions spanning every area of eye disease, from the front to the back of the eye.

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 more than 750 million people globally and we are finding innovative ways to expand access to our latest treatments. About 105 000 people of more than 140 nationalities work at Novartis around the world. Find out more at www.novartis.com.

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References

  1. [1]   American Academy of Ophthalmology. Age-related macular degeneration preferred practice patterns. Available at: https://www.aao.org/preferred-practice-pattern/age-related-macular-degeneration-ppp-2015. Accessed March 2019.
  2. [2]   van Lookeren Campagne M, et al. Mechanisms of age-related macular degeneration and therapeutic opportunities. J Pathol. 2014; 232(2):151-64. doi: 10.1002/path.4266.
  3. [3]   ClinicalTrials.gov. Identifier NCT02307682. Available at https://clinicaltrials.gov/ct2/show/NCT02307682 (link is external). Accessed January 2019.
  4. [4]   ClinicalTrials.gov. Identifier NCT02434328. Available at https://clinicaltrials.gov/ct2/show/NCT02434328 (link is external). Accessed January 2019.
  5. [5]   Dugel P, et al. HAWK & HARRIER: 48-week results of 2 multi-centered, randomized, double-masked trials of brolucizumab versus aflibercept for neovascular AMD. Presented at: The American Academy of Ophthalmology 2017 Annual Meeting on November 10, 2017, New Orleans.
  6. [6]   Dugel P, et al. Phase 3, randomized, double-masked, multi-center trials of brolucizumab versus aflibercept for neovascular AMD: 96-week results from the HAWK and HARRIER studies. Presented at: The American Academy of Ophthalmology on October 27, 2018, Chicago.
  7. [7]   Escher D, et al. Single-chain antibody fragments in ophthalmology. Oral presentation at EURETINA congress. 2015. Abstract.
  8. [8]   Nimz EL, et al. Intraocular and systemic pharmacokinetics of brolucizumab (RTH258) in nonhuman primates. The Association for Research in Vision and Ophthalmology (ARVO) annual meeting. 2016. Abstract 4996.
  9. [9]   Gaudreault J, et al. Preclinical pharmacology and safety of ESBA1008, a single-chain antibody fragment, investigated as potential treatment for age related macular degeneration. ARVO Annual Meeting abstract. Invest Ophthalmol Vis Sci 2012;53:3025. http://iovs.arvojournals.org/article.aspx?articleid=2354604 (link is external). Accessed January 2019.
  10. [10]   Tietz J, et al. Affinity and Potency of RTH258 (ESBA1008), a Novel Inhibitor of Vascular Endothelial Growth Factor A for the Treatment of Retinal Disorders. IOVS. 2015; 56(7):1501.
  11. [11]   Qazi Y, et al. Mediators of ocular angiogenesis. J. Genet. 2009;88(4):495-515.
  12. [12]   Kim R. Introduction, mechanism of action and rationale for anti-vascular endothelial growth factor drugs in age-related macular degeneration. Indian J Ophthalmol. 2007;55(6):413-415.
  13. [13]   Wong, W.L. et al. Global prevalence of age-related macular degeneration and disease burden projection for 2020 and 2040: a systematic review and met analysis. Lancet Glob Health. 2014 Feb;2 (2):e106-16.
  14. [14]   World Health Organization. Priority eye diseases: Age-related macular degeneration. Available at http://www.who.int/blindness/causes/priority/en/index7.html (link is external). Accessed January 2019.
  15. [15]   NHS Choices. Macular Degeneration. Available at http://www.nhs.uk/Conditions/Macular-degeneration/Pages/Introduction.aspx (link is external). Accessed January 2019.
  16. [16]   NHS Choices. Macular Degeneration – Symptoms. Available at http://www.nhs.uk/Conditions/Macular-degeneration/Pages/Symptoms.aspx (link is external). Accessed January 2019.

Source: Novartis

Posted: April 2019

brolucizumab FDA Approval History

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