Basel, August 17, 2021 — Novartis today announced positive results from two Phase III clinical trials assessing Beovu® (brolucizumab) 6 mg versus aflibercept 2 mg in patients with diabetic macular edema (DME). Year two of the pivotal KITE* trial evaluated Beovu on up to 16-week dosing intervals, and the one-year KINGFISHER study evaluated Beovu dosed every four weeks1,3. Both trials demonstrated an overall well-tolerated safety profile.
Results from year two (week 100) of KITE demonstrated that a majority of patients who successfully completed an initial 12-week cycle following the loading phase were maintained on a 12- or 16-week dosing interval through the end of the study1. As previously reported, KITE met its primary endpoint of non-inferiority to aflibercept in best-corrected visual acuity (BCVA) from baseline at year one (week 52). At year one, Beovu showed greater reductions versus aflibercept in central subfield thickness (CSFT) and in number of eyes with intraretinal fluid and/or subretinal fluid (IRF/SRF), which were key fluid-related secondary endpoints. Year two results were consistent with those seen at year one, including maintenance of BCVA and greater reductions in CSFT and in number of eyes with IRF/SRF treated with Beovu versus aflibercept1,2. CSFT is a key indicator of fluid in the retina, and fluid is a key marker of disease activity4,5. Year two findings from KESTREL, another pivotal Phase III trial of Beovu in DME, are due to read out in Q4 of this year.
“Patients with DME often struggle to adhere to burdensome treatment schedules as they manage various comorbidities related to diabetes,” said Prof. Dr. Justus Garweg, Clinic Director, Berne Eye Clinic at Lindenhof Hospital, Switzerland. “The extended dosing and fluid resolution observed in the KITE clinical trial suggest Beovu has the potential to manage the disease in appropriate patients with a relaxed loading phase every six weeks, and dosing intervals as infrequent as every twelve or sixteen weeks.”
Another Phase III trial, KINGFISHER, met its primary endpoint of non-inferiority to aflibercept in change in BCVA from baseline at year one (week 52) when dosed every four weeks3. Beovu also demonstrated superiority versus aflibercept in key fluid-related secondary endpoints at year one, including reductions in CSFT and in number of eyes with IRF/SRF3.
In KITE, the most common (≥5%) overall adverse events were cataract and dry eye. Rates of intraocular inflammation (IOI) in KITE were 2.2% for Beovu and 1.7% for aflibercept, and no retinal vasculitis (RV) was reported in either arm. Rates of retinal vascular occlusion (RO) were 0.6% for Beovu versus 0.6% for aflibercept. In KITE, the majority of IOI events were manageable and resolved without any clinical complications. No RO events were associated with inflammation or vasculitis.
In KINGFISHER, the most common (≥5%) overall adverse events were COVID-19 and hypertension3. Rates of IOI were 4.0% for Beovu (including 0.9% RV) and 2.9% for aflibercept (including 0.6% RV)3. RO rates were 0.3% for Beovu versus 0.6% for aflibercept3. The majority of IOI events were manageable and resolved without any clinical complications3. No RO events were associated with inflammation or vasculitis.
“The year two KITE results reaffirm that Beovu may meet an important need to extend dosing intervals for patients with diabetic macular edema, who are often overburdened with medical appointments,” said Jill Hopkins, Global Development Unit Head, Ophthalmology, Novartis Pharmaceuticals. “Along with the top-line results from KINGFISHER, the KITE findings add to the growing body of data supporting our understanding of where Beovu may potentially fit into the DME treatment landscape. We look forward to continuing discussions with global health authorities about the findings from the KESTREL and KITE clinical trials, and we will continue to assess the clinical relevance of the positive KINGFISHER findings.”
Further details of KITE and KINGFISHER will be presented at upcoming medical meetings.
About the KESTREL, KITE and KINGFISHER clinical trials
KESTREL, KITE and KINGFISHER are global, randomized, double-masked, Phase III, two-year studies comparing the safety and efficacy of Beovu and aflibercept in the treatment of DME6-8.
KESTREL and KITE involved 926 patients in 36 countries6,7. In the loading phase of both trials, patients in the Beovu arms were treated every six weeks for a total of five doses; patients in the aflibercept arms were treated every four weeks for a total of five doses, in line with its label6,7. Following the loading phase, patients in the Beovu arms were subsequently treated every 12 weeks, with those demonstrating disease activity moved to dosing every eight weeks for the remainder of the study6,7.
At week 72 of KITE, Beovu patients dosed every 12 weeks could be extended to dosing every 16 weeks, and patients dosed every eight weeks could be extended to every 12 weeks7. As in year one, those demonstrating disease activity were moved to dosing every eight weeks for the remainder of the study7. Through the entirety of both two-year trials, patients in the aflibercept arms were treated every eight weeks6,7.
KINGFISHER evaluated 517 patients at 115 centers over the course of one year8. Patients were treated with Beovu or aflibercept every four weeks through week 48, with a four-week follow-up period, for a total of 13 visits8.
About diabetic macular edema (DME)
DME is a common microvascular complication in patients with diabetes that may have a debilitating impact on visual acuity, eventually leading to blindness9. DME is the leading cause of blindness in adults in developed countries, affecting 12% of patients with type 1 diabetes and 28% of those with type 2 diabetes9.
Consistently high blood sugar levels associated with diabetes can damage small blood vessels in the eye, causing them to leak fluid10. This damage leads to an excess of vascular endothelial growth factor (VEGF)9,10. VEGF is a protein that stimulates the growth of blood vessels9,10. At elevated levels in DME, VEGF stimulates the growth of abnormal, leaky blood vessels9,10. The resulting accumulation of fluid (known as edema) in the macula can lead to vision loss9,10. The macula is the area of the retina responsible for sharp, central vision10. Early symptoms of DME include blurry or wavy central vision and distorted color perception, although the disease can also progress without symptoms at early stages10,11.
About Beovu (brolucizumab) 6 mg
Beovu (brolucizumab, also known as RTH258) 6 mg is approved for the treatment of wet age-related macular degeneration (AMD) in 70 countries, including in the US, EU, UK, Japan, Canada and Australia12-16. Additional trials, which study the effects of brolucizumab in patients with wet AMD, diabetic macular edema (DME), and proliferative diabetic retinopathy (PDR), are currently ongoing.
About Novartis in Ophthalmology
At Novartis, our mission is to discover new ways to improve and extend people’s lives. In ophthalmology, we develop and deliver life-changing medicines and therapies for diseases and conditions from front to back of the eye, enabled by data and transformative technologies. Our ophthalmic solutions reach more than 150M people per year, from premature infants to the elderly.
*Kite Pharma, Inc. is neither a sponsor of nor associated with Novartis’ KITE trial.
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