Abstract
PurposeTo evaluate the 2-year efficacy, durability, and safety of dual angiopoietin-2/vascular endothelial growth factor (VEGF)-A pathway inhibition with intravitreal faricimab according to a personalized treat-and-extend–based regimen (T&E) with up to every-16-week (Q16W) dosing in the YOSEMITE/RHINE (NCT03622580/NCT03622593) phase 3 trials of diabetic macular edema (DME). DesignRandomized, double-masked, noninferiority phase 3 trials. ParticipantsAdults with visual acuity loss due to center-involving DME. MethodsPatients were randomized 1:1:1 to faricimab 6.0 mg Q8W, faricimab 6.0 mg T&E (previously referred to as personalized treatment interval), or aflibercept 2.0 mg Q8W. The T&E up to Q16W dosing regimen was based on central subfield thickness (CST) and best-corrected visual acuity (BCVA) change. Main Outcome MeasuresIncluded changes from baseline in BCVA and CST, number of injections, durability, absence of fluid, and safety through week 100. ResultsIn YOSEMITE/RHINE (N=940/951), noninferior year 1 visual acuity gains were maintained through year 2; mean BCVA change from baseline at 2 years (weeks 92/96/100 average) with faricimab Q8W (YOSEMITE/RHINE, +10.7/+10.9 letters) or T&E (+10.7/+10.1 letters) were comparable with aflibercept Q8W (+11.4/+9.4 letters). The median number of study drug injections was lower with faricimab T&E (YOSEMITE/RHINE, 10/11 injections) versus faricimab Q8W (15 injections) and aflibercept Q8W (14 injections) across both trials during the entire study. In the faricimab T&E arms, durability was further improved during year 2, with >60% of patients on Q16W dosing and ∼80% on ≥Q12W dosing at week 96. Almost 80% of patients who achieved Q16W dosing at week 52 maintained Q16W dosing without an interval reduction through week 96. Mean CST reductions were greater, and more patients achieved absence of DME (CST <325μm) and absence of intraretinal fluid with faricimab Q8W or T&E versus aflibercept Q8W through year 2. Overall, faricimab was well tolerated, with a safety profile comparable to aflibercept. ConclusionsClinically meaningful visual acuity gains from baseline, anatomic improvements, and extended durability with intravitreal faricimab up to Q16W were maintained through year 2. Faricimab given as a personalized T&E–based dosing regimen supports the role of dual angiopoietin-2/VEGF-A inhibition to promote vascular stability and provide durable efficacy for patients with DME.
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