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Safety and Efficacy of Risuteganib in Intermediate Non-exudative Age-Related Macular Degeneration

Maturi, Raj and Jaffe, Glenn J. and Ehlers, Justis P. and Kaiser, Peter K. and Boyer, David S. and Heier, Jeffrey S. and Kornfield, Julia A. and Kuppermann, Baruch D. and Quiroz-Mercado, Hugo and Aubel, Janine and Karageozian, Lisa and Karageozian, Vicken H. and Sarayba, Melvin (2020) Safety and Efficacy of Risuteganib in Intermediate Non-exudative Age-Related Macular Degeneration. Investigative Ophthalmology and Visual Science, 61 (7). Art. No. 1944. ISSN 0146-0404.

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Purpose : Risuteganib is a small synthetic peptide that regulates select integrin functions involved in the pathogenesis of dry age-related macular degeneration (AMD). This study evaluated the safety and efficay of risuteganib for the treatment of dry AMD. Methods : Randomized, double-masked, placebo-controlled Phase 2 study in eyes with intermediate dry AMD presenting with best-corrected visual acuity (BCVA) between 20/40-20/200 was conducted across multiple centers in the United States. Patients were randomized to receive either intravitreal 1.0mg risuteganib or sham injection at baseline. At week 16, patients in the risuteganib group received a second dose and the sham group crossed over and receive a single dose of 1.0mg risuteganib. The primary endpoint was the percentage of population with ≥ 8 letters BCVA gain from baseline to week 28 in 1.0mg risuteganib vs baseline to week 12 for sham. Results : Forty-five patients were enrolled in the study. At baseline, mean patient age was 78.8 and 75.9 years and mean baseline BCVA was 67.1 and 64.4 letters in the sham and risuteganib groups, respectively. The primary endpoint was met; 48% of patients in the risuteganib group at week 28 and 7% of patients in the sham group at week 12 gained > 8 letters from baseline (p=0.013). Of the risuteganib treated patients, 20% gained > 15 letters at week 28; no patients in the sham group at week 12 had this gain. On a post-hoc masked analysis by 2 independent reading centers, greater outer retinal and photoreceptor thickness and volume and smaller ellipsoid zone defect area in the central 1 mm zone at baseline were associated with increased BCVA response to risuteganib. Risuteganib demonstrated a good safety profile in this study. Conclusions : Risuteganib showed significant benefit over sham in patients with dry AMD with respect to proportion of patients gaining > 8 letters of BCVA from baseline. Furthermore, post hoc analysis provides preliminary insights into baseline anatomic features that may help to determine likelihood of BCVA response to risuteganib. These findings will be confirmed in an upcoming larger trial.

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Kornfield, Julia A.0000-0001-6746-8634
Additional Information:© 2020 Association for Research in Vision and Ophthalmology. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Issue or Number:7
Record Number:CaltechAUTHORS:20200921-142348069
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:105460
Deposited By: Tony Diaz
Deposited On:21 Sep 2020 22:57
Last Modified:21 Sep 2020 22:57

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